Commit Graph

1234893 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
0e42b5fee8 Merge 6.7-rc5 into char-misc-next
We need the char/misc fixes in here as well for testing and to build off
of.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-11 08:39:35 +01:00
Linus Torvalds
a39b6ac378 Linux 6.7-rc5 2023-12-10 14:33:40 -08:00
Linus Torvalds
3a87498869 - Make sure tasks are thawed exactly and only once to avoid their state
getting corrupted
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Merge tag 'sched_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Borislav Petkov:

 - Make sure tasks are thawed exactly and only once to avoid their state
   getting corrupted

* tag 'sched_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  freezer,sched: Do not restore saved_state of a thawed task
2023-12-10 11:09:16 -08:00
Linus Torvalds
537ccb5d28 - Make sure perf event size validation is done on every event in the
group
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Merge tag 'perf_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf event fix from Borislav Petkov:

 - Make sure perf event size validation is done on every event in the
   group

* tag 'perf_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix perf_event_validate_size()
2023-12-10 11:03:15 -08:00
Linus Torvalds
5412fed784 - Add a forgotten CPU vendor check in the AMD microcode post-loading
callback so that the callback runs only on AMD
 
 - Make sure SEV-ES protocol negotiation happens only once and on the BSP
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Merge tag 'x86_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Add a forgotten CPU vendor check in the AMD microcode post-loading
   callback so that the callback runs only on AMD

 - Make sure SEV-ES protocol negotiation happens only once and on the
   BSP

* tag 'x86_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/CPU/AMD: Check vendor in the AMD microcode callback
  x86/sev: Fix kernel crash due to late update to read-only ghcb_version
2023-12-10 10:53:55 -08:00
Linus Torvalds
0aea22c7ab Generic:
* Set .owner for various KVM file_operations so that files refcount the
   KVM module until KVM is done executing _all_ code, including the last
   few instructions of kvm_put_kvm().  And then revert the misguided
   attempt to rely on "struct kvm" refcounts to pin KVM-the-module.
 
 ARM:
 
 * Do not redo the mapping of vLPIs, if they have already been mapped
 
 s390:
 
 * Do not leave bits behind in PTEs
 
 * Properly catch page invalidations that affect the prefix of a nested
   guest
 
 x86:
 
 * When checking if a _running_ vCPU is "in-kernel", i.e. running at CPL0,
   get the CPL directly instead of relying on preempted_in_kernel (which
   is valid if and only if the vCPU was preempted, i.e. NOT running).
 
 * Fix a benign "return void" that was recently introduced.
 
 Selftests:
 
 * Makefile tweak for dependency generation
 
 * -Wformat fix
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Generic:

   - Set .owner for various KVM file_operations so that files refcount
     the KVM module until KVM is done executing _all_ code, including
     the last few instructions of kvm_put_kvm(). And then revert the
     misguided attempt to rely on "struct kvm" refcounts to pin
     KVM-the-module.

  ARM:

   - Do not redo the mapping of vLPIs, if they have already been mapped

  s390:

   - Do not leave bits behind in PTEs

   - Properly catch page invalidations that affect the prefix of a
     nested guest

  x86:

   - When checking if a _running_ vCPU is "in-kernel", i.e. running at
     CPL0, get the CPL directly instead of relying on
     preempted_in_kernel (which is valid if and only if the vCPU was
     preempted, i.e. NOT running).

   - Fix a benign "return void" that was recently introduced.

  Selftests:

   - Makefile tweak for dependency generation

   - '-Wformat' fix"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: SVM: Update EFER software model on CR0 trap for SEV-ES
  KVM: selftests: add -MP to CFLAGS
  KVM: selftests: Actually print out magic token in NX hugepages skip message
  KVM: x86: Remove 'return void' expression for 'void function'
  Revert "KVM: Prevent module exit until all VMs are freed"
  KVM: Set file_operations.owner appropriately for all such structures
  KVM: x86: Get CPL directly when checking if loaded vCPU is in kernel mode
  KVM: arm64: GICv4: Do not perform a map to a mapped vLPI
  KVM: s390/mm: Properly reset no-dat
  KVM: s390: vsie: fix wrong VIR 37 when MSO is used
2023-12-10 10:46:46 -08:00
Linus Torvalds
c527f5606a powerpc fixes for 6.7 #4
- Fix stack teardown in ftrace_no_trace, seen as crashes doing CPU hotplug
    while ftrace is active.
 
 Thanks to: Naveen N Rao
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Merge tag 'powerpc-6.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - Fix stack teardown in ftrace_no_trace, seen as crashes doing CPU
   hotplug while ftrace is active.

   Thanks to Naveen N Rao.

* tag 'powerpc-6.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/ftrace: Fix stack teardown in ftrace_no_trace
2023-12-09 19:32:35 -08:00
Linus Torvalds
99d4cf7659 gpio fixes for v6.7-rc5
- fix an error path after a failed export in sysfs code
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Merge tag 'gpio-fixes-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fix from Bartosz Golaszewski:

 - fix an error path after a failed export in sysfs code

* tag 'gpio-fixes-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpiolib: sysfs: Fix error handling on failed export
2023-12-09 19:21:44 -08:00
Linus Torvalds
21b73ffcc6 USB fixes for 6.7-rc5
Here are some small USB fixes for 6.7-rc5 to resolve some reported
 issues.  Included in here are:
   - usb gadget f_hid, and uevent fix
   - xhci driver revert to resolve a much-reported issue
   - typec driver fix
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for 6.7-rc5 to resolve some reported
  issues. Included in here are:

   - usb gadget f_hid, and uevent fix

   - xhci driver revert to resolve a much-reported issue

   - typec driver fix

  All of these have been in linux-next with no reported issues"

* tag 'usb-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: gadget: f_hid: fix report descriptor allocation
  Revert "xhci: Loosen RPM as default policy to cover for AMD xHC 1.1"
  usb: typec: class: fix typec_altmode_put_partner to put plugs
  USB: gadget: core: adjust uevent timing on gadget unbind
2023-12-09 12:54:58 -08:00
Linus Torvalds
0b5260904b Serial driver fixes for 6.7-rc4
Here are some small serial driver fixes for 6.7-rc4 to resolve some
 reported issues.  Included in here are:
   - pl011 dma support fix
   - sc16is7xx driver fix
   - ma35d1 console index fix
   - 8250 driver fixes for small issues
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull serial driver fixes from Greg KH:
 "Here are some small serial driver fixes for 6.7-rc4 to resolve some
  reported issues. Included in here are:

   - pl011 dma support fix

   - sc16is7xx driver fix

   - ma35d1 console index fix

   - 8250 driver fixes for small issues

  All of these have been in linux-next with no reported issues"

* tag 'tty-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: 8250_dw: Add ACPI ID for Granite Rapids-D UART
  serial: ma35d1: Validate console index before assignment
  ARM: PL011: Fix DMA support
  serial: sc16is7xx: address RX timeout interrupt errata
  serial: 8250: 8250_omap: Clear UART_HAS_RHR_IT_DIS bit
  serial: 8250_omap: Add earlycon support for the AM654 UART controller
  serial: 8250: 8250_omap: Do not start RX DMA on THRI interrupt
2023-12-09 12:49:22 -08:00
Linus Torvalds
ca20f1622b Char/Misc driver fixes for 6.7-rc5
Here are some small fixes for 6.7-rc5 for a variety of small driver
 subsystems.  Included in here are:
   - debugfs revert for reported issue
   - greybus revert for reported issue
   - greybus fixup for endian build warning
   - coresight driver fixes
   - nvmem driver fixes
   - devcoredump fix
   - parport new device id
   - ndtest build fix
 
 All of these have ben in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver fixes from Greg KH:
 "Here are some small fixes for 6.7-rc5 for a variety of small driver
  subsystems. Included in here are:

   - debugfs revert for reported issue

   - greybus revert for reported issue

   - greybus fixup for endian build warning

   - coresight driver fixes

   - nvmem driver fixes

   - devcoredump fix

   - parport new device id

   - ndtest build fix

  All of these have ben in linux-next with no reported issues"

* tag 'char-misc-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  nvmem: Do not expect fixed layouts to grab a layout driver
  parport: Add support for Brainboxes IX/UC/PX parallel cards
  Revert "greybus: gb-beagleplay: Ensure le for values in transport"
  greybus: gb-beagleplay: Ensure le for values in transport
  greybus: BeaglePlay driver needs CRC_CCITT
  Revert "debugfs: annotate debugfs handlers vs. removal with lockdep"
  devcoredump: Send uevent once devcd is ready
  ndtest: fix typo class_regster -> class_register
  misc: mei: client.c: fix problem of return '-EOVERFLOW' in mei_cl_write
  misc: mei: client.c: return negative error code in mei_cl_write
  mei: pxp: fix mei_pxp_send_message return value
  coresight: ultrasoc-smb: Fix uninitialized before use buf_hw_base
  coresight: ultrasoc-smb: Config SMB buffer before register sink
  coresight: ultrasoc-smb: Fix sleep while close preempt in enable_smb
  Documentation: coresight: fix `make refcheckdocs` warning
  hwtracing: hisi_ptt: Don't try to attach a task
  hwtracing: hisi_ptt: Handle the interrupt in hardirq context
  hwtracing: hisi_ptt: Add dummy callback pmu::read()
  coresight: Fix crash when Perf and sysfs modes are used concurrently
  coresight: etm4x: Remove bogous __exit annotation for some functions
2023-12-09 12:44:10 -08:00
Linus Torvalds
b10a3ccaf6 LoongArch fixes for v6.7-rc5
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Merge tag 'loongarch-fixes-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
 "Preserve syscall nr across execve(), slightly clean up drdtime(), fix
  the Clang built zboot kernel, fix a stack unwinder bug and several bpf
  jit bugs"

* tag 'loongarch-fixes-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: BPF: Fix unconditional bswap instructions
  LoongArch: BPF: Fix sign-extension mov instructions
  LoongArch: BPF: Don't sign extend function return value
  LoongArch: BPF: Don't sign extend memory load operand
  LoongArch: Preserve syscall nr across execve()
  LoongArch: Set unwind stack type to unknown rather than set error flag
  LoongArch: Slightly clean up drdtime()
  LoongArch: Apply dynamic relocations for LLD
2023-12-09 12:25:56 -08:00
Linus Torvalds
b8503b2157 - Fixes for broken Loongson firmware
- Fix lockdep splat
 - Fix FPU states when creating kernel threads
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Merge tag 'mips-fixes_6.7_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer:

 - Fixes for broken Loongson firmware

 - Fix lockdep splat

 - Fix FPU states when creating kernel threads

* tag 'mips-fixes_6.7_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: kernel: Clear FPU states when setting up kernel threads
  MIPS: Loongson64: Handle more memory types passed from firmware
  MIPS: Loongson64: Enable DMA noncoherent support
  MIPS: Loongson64: Reserve vgabios memory on boot
  mips/smp: Call rcutree_report_cpu_starting() earlier
2023-12-09 12:22:20 -08:00
Linus Torvalds
9d3bc457a2 perf tools fixes for v6.7: 2nd batch
A random set of small bug fixes including:
 
  * Fix segfault on AmpereOne due to missing default metricgroup name.
  * Fix segfault on `perf list --json` due to NULL pointer.
 
 Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'perf-tools-fixes-for-v6.7-2-2023-12-08' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tools fixes from Namhyung Kim:
 "A random set of small bug fixes including:

   - Fix segfault on AmpereOne due to missing default metricgroup name

   - Fix segfault on `perf list --json` due to NULL pointer"

* tag 'perf-tools-fixes-for-v6.7-2-2023-12-08' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
  perf list: Fix JSON segfault by setting the used skip_duplicate_pmus callback
  perf vendor events arm64: AmpereOne: Add missing DefaultMetricgroupName fields
  perf metrics: Avoid segv if default metricgroup isn't set
2023-12-09 12:16:50 -08:00
Linus Torvalds
2099306c4e Six smb3 client fixes
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Merge tag '6.7-rc4-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:
 "Six smb3 client fixes:

   - Fixes for copy_file_range and clone (cache invalidation and file
     size), also addresses an xfstest failure

   - Fix to return proper error if REMAP_FILE_DEDUP set (also fixes
     xfstest generic/304)

   - Fix potential null pointer reference with DFS

   - Multichannel fix addressing (reverting an earlier patch) some of
     the problems with enabling/disabling channels dynamically

  Still working on a followon multichannel fix to address another issue
  found in reconnect testing that will send next week"

* tag '6.7-rc4-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: reconnect worker should take reference on server struct unconditionally
  Revert "cifs: reconnect work should have reference on server struct"
  cifs: Fix non-availability of dedup breaking generic/304
  smb: client: fix potential NULL deref in parse_dfs_referrals()
  cifs: Fix flushing, invalidation and file size with FICLONE
  cifs: Fix flushing, invalidation and file size with copy_file_range()
2023-12-09 12:10:56 -08:00
Tiezhu Yang
e2f7b3d8b4 LoongArch: BPF: Fix unconditional bswap instructions
We can see that "bswap32: Takes an unsigned 32-bit number in either big-
or little-endian format and returns the equivalent number with the same
bit width but opposite endianness" in BPF Instruction Set Specification,
so it should clear the upper 32 bits in "case 32:" for both BPF_ALU and
BPF_ALU64.

[root@linux fedora]# echo 1 > /proc/sys/net/core/bpf_jit_enable
[root@linux fedora]# modprobe test_bpf

Before:
test_bpf: #313 BSWAP 32: 0x0123456789abcdef -> 0xefcdab89 jited:1 ret 1460850314 != -271733879 (0x5712ce8a != 0xefcdab89)FAIL (1 times)
test_bpf: #317 BSWAP 32: 0xfedcba9876543210 -> 0x10325476 jited:1 ret -1460850316 != 271733878 (0xa8ed3174 != 0x10325476)FAIL (1 times)

After:
test_bpf: #313 BSWAP 32: 0x0123456789abcdef -> 0xefcdab89 jited:1 4 PASS
test_bpf: #317 BSWAP 32: 0xfedcba9876543210 -> 0x10325476 jited:1 4 PASS

Fixes: 4ebf9216e7 ("LoongArch: BPF: Support unconditional bswap instructions")
Acked-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-12-09 15:49:16 +08:00
Tiezhu Yang
772cbe948f LoongArch: BPF: Fix sign-extension mov instructions
We can see that "Short form of movsx, dst_reg = (s8,s16,s32)src_reg" in
include/linux/filter.h, additionally, for BPF_ALU64 the value of the
destination register is unchanged whereas for BPF_ALU the upper 32 bits
of the destination register are zeroed, so it should clear the upper 32
bits for BPF_ALU.

[root@linux fedora]# echo 1 > /proc/sys/net/core/bpf_jit_enable
[root@linux fedora]# modprobe test_bpf

Before:
test_bpf: #81 ALU_MOVSX | BPF_B jited:1 ret 2 != 1 (0x2 != 0x1)FAIL (1 times)
test_bpf: #82 ALU_MOVSX | BPF_H jited:1 ret 2 != 1 (0x2 != 0x1)FAIL (1 times)

After:
test_bpf: #81 ALU_MOVSX | BPF_B jited:1 6 PASS
test_bpf: #82 ALU_MOVSX | BPF_H jited:1 6 PASS

By the way, the bpf selftest case "./test_progs -t verifier_movsx" can
also be fixed with this patch.

Fixes: f48012f161 ("LoongArch: BPF: Support sign-extension mov instructions")
Acked-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-12-09 15:49:16 +08:00
Hengqi Chen
5d47ec2e6f LoongArch: BPF: Don't sign extend function return value
The `cls_redirect` test triggers a kernel panic like:

  # ./test_progs -t cls_redirect
  Can't find bpf_testmod.ko kernel module: -2
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  [   30.938489] CPU 3 Unable to handle kernel paging request at virtual address fffffffffd814de0, era == ffff800002009fb8, ra == ffff800002009f9c
  [   30.939331] Oops[#1]:
  [   30.939513] CPU: 3 PID: 1260 Comm: test_progs Not tainted 6.7.0-rc2-loong-devel-g2f56bb0d2327 #35 a896aca3f4164f09cc346f89f2e09832e07be5f6
  [   30.939732] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 2/2/2022
  [   30.939901] pc ffff800002009fb8 ra ffff800002009f9c tp 9000000104da4000 sp 9000000104da7ab0
  [   30.940038] a0 fffffffffd814de0 a1 9000000104da7a68 a2 0000000000000000 a3 9000000104da7c10
  [   30.940183] a4 9000000104da7c14 a5 0000000000000002 a6 0000000000000021 a7 00005555904d7f90
  [   30.940321] t0 0000000000000110 t1 0000000000000000 t2 fffffffffd814de0 t3 0004c4b400000000
  [   30.940456] t4 ffffffffffffffff t5 00000000c3f63600 t6 0000000000000000 t7 0000000000000000
  [   30.940590] t8 000000000006d803 u0 0000000000000020 s9 9000000104da7b10 s0 900000010504c200
  [   30.940727] s1 fffffffffd814de0 s2 900000010504c200 s3 9000000104da7c10 s4 9000000104da7ad0
  [   30.940866] s5 0000000000000000 s6 90000000030e65bc s7 9000000104da7b44 s8 90000000044f6fc0
  [   30.941015]    ra: ffff800002009f9c bpf_prog_846803e5ae81417f_cls_redirect+0xa0/0x590
  [   30.941535]   ERA: ffff800002009fb8 bpf_prog_846803e5ae81417f_cls_redirect+0xbc/0x590
  [   30.941696]  CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
  [   30.942224]  PRMD: 00000004 (PPLV0 +PIE -PWE)
  [   30.942330]  EUEN: 00000003 (+FPE +SXE -ASXE -BTE)
  [   30.942453]  ECFG: 00071c1c (LIE=2-4,10-12 VS=7)
  [   30.942612] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0)
  [   30.942764]  BADV: fffffffffd814de0
  [   30.942854]  PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)
  [   30.942974] Modules linked in:
  [   30.943078] Process test_progs (pid: 1260, threadinfo=00000000ce303226, task=000000007d10bb76)
  [   30.943306] Stack : 900000010a064000 90000000044f6fc0 9000000104da7b48 0000000000000000
  [   30.943495]         0000000000000000 9000000104da7c14 9000000104da7c10 900000010504c200
  [   30.943626]         0000000000000001 ffff80001b88c000 9000000104da7b70 90000000030e6668
  [   30.943785]         0000000000000000 9000000104da7b58 ffff80001b88c048 9000000003d05000
  [   30.943936]         900000000303ac88 0000000000000000 0000000000000000 9000000104da7b70
  [   30.944091]         0000000000000000 0000000000000001 0000000731eeab00 0000000000000000
  [   30.944245]         ffff80001b88c000 0000000000000000 0000000000000000 54b99959429f83b8
  [   30.944402]         ffff80001b88c000 90000000044f6fc0 9000000101d70000 ffff80001b88c000
  [   30.944538]         000000000000005a 900000010504c200 900000010a064000 900000010a067000
  [   30.944697]         9000000104da7d88 0000000000000000 9000000003d05000 90000000030e794c
  [   30.944852]         ...
  [   30.944924] Call Trace:
  [   30.945120] [<ffff800002009fb8>] bpf_prog_846803e5ae81417f_cls_redirect+0xbc/0x590
  [   30.945650] [<90000000030e6668>] bpf_test_run+0x1ec/0x2f8
  [   30.945958] [<90000000030e794c>] bpf_prog_test_run_skb+0x31c/0x684
  [   30.946065] [<90000000026d4f68>] __sys_bpf+0x678/0x2724
  [   30.946159] [<90000000026d7288>] sys_bpf+0x20/0x2c
  [   30.946253] [<90000000032dd224>] do_syscall+0x7c/0x94
  [   30.946343] [<9000000002541c5c>] handle_syscall+0xbc/0x158
  [   30.946492]
  [   30.946549] Code: 0015030e  5c0009c0  5001d000 <28c00304> 02c00484  29c00304  00150009  2a42d2e4  0280200d
  [   30.946793]
  [   30.946971] ---[ end trace 0000000000000000 ]---
  [   32.093225] Kernel panic - not syncing: Fatal exception in interrupt
  [   32.093526] Kernel relocated by 0x2320000
  [   32.093630]  .text @ 0x9000000002520000
  [   32.093725]  .data @ 0x9000000003400000
  [   32.093792]  .bss  @ 0x9000000004413200
  [   34.971998] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---

This is because we signed-extend function return values. When subprog
mode is enabled, we have:

  cls_redirect()
    -> get_global_metrics() returns pcpu ptr 0xfffffefffc00b480

The pointer returned is later signed-extended to 0xfffffffffc00b480 at
`BPF_JMP | BPF_EXIT`. During BPF prog run, this triggers unhandled page
fault and a kernel panic.

Drop the unnecessary signed-extension on return values like other
architectures do.

With this change, we have:

  # ./test_progs -t cls_redirect
  Can't find bpf_testmod.ko kernel module: -2
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  #51/1    cls_redirect/cls_redirect_inlined:OK
  #51/2    cls_redirect/IPv4 TCP accept unknown (no hops, flags: SYN):OK
  #51/3    cls_redirect/IPv6 TCP accept unknown (no hops, flags: SYN):OK
  #51/4    cls_redirect/IPv4 TCP accept unknown (no hops, flags: ACK):OK
  #51/5    cls_redirect/IPv6 TCP accept unknown (no hops, flags: ACK):OK
  #51/6    cls_redirect/IPv4 TCP forward unknown (one hop, flags: ACK):OK
  #51/7    cls_redirect/IPv6 TCP forward unknown (one hop, flags: ACK):OK
  #51/8    cls_redirect/IPv4 TCP accept known (one hop, flags: ACK):OK
  #51/9    cls_redirect/IPv6 TCP accept known (one hop, flags: ACK):OK
  #51/10   cls_redirect/IPv4 UDP accept unknown (no hops, flags: none):OK
  #51/11   cls_redirect/IPv6 UDP accept unknown (no hops, flags: none):OK
  #51/12   cls_redirect/IPv4 UDP forward unknown (one hop, flags: none):OK
  #51/13   cls_redirect/IPv6 UDP forward unknown (one hop, flags: none):OK
  #51/14   cls_redirect/IPv4 UDP accept known (one hop, flags: none):OK
  #51/15   cls_redirect/IPv6 UDP accept known (one hop, flags: none):OK
  #51/16   cls_redirect/cls_redirect_subprogs:OK
  #51/17   cls_redirect/IPv4 TCP accept unknown (no hops, flags: SYN):OK
  #51/18   cls_redirect/IPv6 TCP accept unknown (no hops, flags: SYN):OK
  #51/19   cls_redirect/IPv4 TCP accept unknown (no hops, flags: ACK):OK
  #51/20   cls_redirect/IPv6 TCP accept unknown (no hops, flags: ACK):OK
  #51/21   cls_redirect/IPv4 TCP forward unknown (one hop, flags: ACK):OK
  #51/22   cls_redirect/IPv6 TCP forward unknown (one hop, flags: ACK):OK
  #51/23   cls_redirect/IPv4 TCP accept known (one hop, flags: ACK):OK
  #51/24   cls_redirect/IPv6 TCP accept known (one hop, flags: ACK):OK
  #51/25   cls_redirect/IPv4 UDP accept unknown (no hops, flags: none):OK
  #51/26   cls_redirect/IPv6 UDP accept unknown (no hops, flags: none):OK
  #51/27   cls_redirect/IPv4 UDP forward unknown (one hop, flags: none):OK
  #51/28   cls_redirect/IPv6 UDP forward unknown (one hop, flags: none):OK
  #51/29   cls_redirect/IPv4 UDP accept known (one hop, flags: none):OK
  #51/30   cls_redirect/IPv6 UDP accept known (one hop, flags: none):OK
  #51/31   cls_redirect/cls_redirect_dynptr:OK
  #51/32   cls_redirect/IPv4 TCP accept unknown (no hops, flags: SYN):OK
  #51/33   cls_redirect/IPv6 TCP accept unknown (no hops, flags: SYN):OK
  #51/34   cls_redirect/IPv4 TCP accept unknown (no hops, flags: ACK):OK
  #51/35   cls_redirect/IPv6 TCP accept unknown (no hops, flags: ACK):OK
  #51/36   cls_redirect/IPv4 TCP forward unknown (one hop, flags: ACK):OK
  #51/37   cls_redirect/IPv6 TCP forward unknown (one hop, flags: ACK):OK
  #51/38   cls_redirect/IPv4 TCP accept known (one hop, flags: ACK):OK
  #51/39   cls_redirect/IPv6 TCP accept known (one hop, flags: ACK):OK
  #51/40   cls_redirect/IPv4 UDP accept unknown (no hops, flags: none):OK
  #51/41   cls_redirect/IPv6 UDP accept unknown (no hops, flags: none):OK
  #51/42   cls_redirect/IPv4 UDP forward unknown (one hop, flags: none):OK
  #51/43   cls_redirect/IPv6 UDP forward unknown (one hop, flags: none):OK
  #51/44   cls_redirect/IPv4 UDP accept known (one hop, flags: none):OK
  #51/45   cls_redirect/IPv6 UDP accept known (one hop, flags: none):OK
  #51      cls_redirect:OK
  Summary: 1/45 PASSED, 0 SKIPPED, 0 FAILED

Fixes: 5dc615520c ("LoongArch: Add BPF JIT support")
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-12-09 15:49:16 +08:00
Hengqi Chen
fe5757553b LoongArch: BPF: Don't sign extend memory load operand
The `cgrp_local_storage` test triggers a kernel panic like:

  # ./test_progs -t cgrp_local_storage
  Can't find bpf_testmod.ko kernel module: -2
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  [  550.930632] CPU 1 Unable to handle kernel paging request at virtual address 0000000000000080, era == ffff80000200be34, ra == ffff80000200be00
  [  550.931781] Oops[#1]:
  [  550.931966] CPU: 1 PID: 1303 Comm: test_progs Not tainted 6.7.0-rc2-loong-devel-g2f56bb0d2327 #35 a896aca3f4164f09cc346f89f2e09832e07be5f6
  [  550.932215] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 2/2/2022
  [  550.932403] pc ffff80000200be34 ra ffff80000200be00 tp 9000000108350000 sp 9000000108353dc0
  [  550.932545] a0 0000000000000000 a1 0000000000000517 a2 0000000000000118 a3 00007ffffbb15558
  [  550.932682] a4 00007ffffbb15620 a5 90000001004e7700 a6 0000000000000021 a7 0000000000000118
  [  550.932824] t0 ffff80000200bdc0 t1 0000000000000517 t2 0000000000000517 t3 00007ffff1c06ee0
  [  550.932961] t4 0000555578ae04d0 t5 fffffffffffffff8 t6 0000000000000004 t7 0000000000000020
  [  550.933097] t8 0000000000000040 u0 00000000000007b8 s9 9000000108353e00 s0 90000001004e7700
  [  550.933241] s1 9000000004005000 s2 0000000000000001 s3 0000000000000000 s4 0000555555eb2ec8
  [  550.933379] s5 00007ffffbb15bb8 s6 00007ffff1dafd60 s7 000055555663f610 s8 00007ffff1db0050
  [  550.933520]    ra: ffff80000200be00 bpf_prog_98f1b9e767be2a84_on_enter+0x40/0x200
  [  550.933911]   ERA: ffff80000200be34 bpf_prog_98f1b9e767be2a84_on_enter+0x74/0x200
  [  550.934105]  CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
  [  550.934596]  PRMD: 00000004 (PPLV0 +PIE -PWE)
  [  550.934712]  EUEN: 00000003 (+FPE +SXE -ASXE -BTE)
  [  550.934836]  ECFG: 00071c1c (LIE=2-4,10-12 VS=7)
  [  550.934976] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0)
  [  550.935097]  BADV: 0000000000000080
  [  550.935181]  PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)
  [  550.935291] Modules linked in:
  [  550.935391] Process test_progs (pid: 1303, threadinfo=000000006c3b1c41, task=0000000061f84a55)
  [  550.935643] Stack : 00007ffffbb15bb8 0000555555eb2ec8 0000000000000000 0000000000000001
  [  550.935844]         9000000004005000 ffff80001b864000 00007ffffbb15450 90000000029aa034
  [  550.935990]         0000000000000000 9000000108353ec0 0000000000000118 d07d9dfb09721a09
  [  550.936175]         0000000000000001 0000000000000000 9000000108353ec0 0000000000000118
  [  550.936314]         9000000101d46ad0 900000000290abf0 000055555663f610 0000000000000000
  [  550.936479]         0000000000000003 9000000108353ec0 00007ffffbb15450 90000000029d7288
  [  550.936635]         00007ffff1dafd60 000055555663f610 0000000000000000 0000000000000003
  [  550.936779]         9000000108353ec0 90000000035dd1f0 00007ffff1dafd58 9000000002841c5c
  [  550.936939]         0000000000000119 0000555555eea5a8 00007ffff1d78780 00007ffffbb153e0
  [  550.937083]         ffffffffffffffda 00007ffffbb15518 0000000000000040 00007ffffbb15558
  [  550.937224]         ...
  [  550.937299] Call Trace:
  [  550.937521] [<ffff80000200be34>] bpf_prog_98f1b9e767be2a84_on_enter+0x74/0x200
  [  550.937910] [<90000000029aa034>] bpf_trace_run2+0x90/0x154
  [  550.938105] [<900000000290abf0>] syscall_trace_enter.isra.0+0x1cc/0x200
  [  550.938224] [<90000000035dd1f0>] do_syscall+0x48/0x94
  [  550.938319] [<9000000002841c5c>] handle_syscall+0xbc/0x158
  [  550.938477]
  [  550.938607] Code: 580009ae  50016000  262402e4 <28c20085> 14092084  03a00084  16000024  03240084  00150006
  [  550.938851]
  [  550.939021] ---[ end trace 0000000000000000 ]---

Further investigation shows that this panic is triggered by memory
load operations:

  ptr = bpf_cgrp_storage_get(&map_a, task->cgroups->dfl_cgrp, 0,
                             BPF_LOCAL_STORAGE_GET_F_CREATE);

The expression `task->cgroups->dfl_cgrp` involves two memory load.
Since the field offset fits in imm12 or imm14, we use ldd or ldptrd
instructions. But both instructions have the side effect that it will
signed-extended the imm operand. Finally, we got the wrong addresses
and panics is inevitable.

Use a generic ldxd instruction to avoid this kind of issues.

With this change, we have:

  # ./test_progs -t cgrp_local_storage
  Can't find bpf_testmod.ko kernel module: -2
  WARNING! Selftests relying on bpf_testmod.ko will be skipped.
  test_cgrp_local_storage:PASS:join_cgroup /cgrp_local_storage 0 nsec
  #48/1    cgrp_local_storage/tp_btf:OK
  test_attach_cgroup:PASS:skel_open 0 nsec
  test_attach_cgroup:PASS:prog_attach 0 nsec
  test_attach_cgroup:PASS:prog_attach 0 nsec
  libbpf: prog 'update_cookie_tracing': failed to attach: ERROR: strerror_r(-524)=22
  test_attach_cgroup:FAIL:prog_attach unexpected error: -524
  #48/2    cgrp_local_storage/attach_cgroup:FAIL
  test_recursion:PASS:skel_open_and_load 0 nsec
  libbpf: prog 'on_lookup': failed to attach: ERROR: strerror_r(-524)=22
  libbpf: prog 'on_lookup': failed to auto-attach: -524
  test_recursion:FAIL:skel_attach unexpected error: -524 (errno 524)
  #48/3    cgrp_local_storage/recursion:FAIL
  #48/4    cgrp_local_storage/negative:OK
  #48/5    cgrp_local_storage/cgroup_iter_sleepable:OK
  test_yes_rcu_lock:PASS:skel_open 0 nsec
  test_yes_rcu_lock:PASS:skel_load 0 nsec
  libbpf: prog 'yes_rcu_lock': failed to attach: ERROR: strerror_r(-524)=22
  libbpf: prog 'yes_rcu_lock': failed to auto-attach: -524
  test_yes_rcu_lock:FAIL:skel_attach unexpected error: -524 (errno 524)
  #48/6    cgrp_local_storage/yes_rcu_lock:FAIL
  #48/7    cgrp_local_storage/no_rcu_lock:OK
  #48      cgrp_local_storage:FAIL

  All error logs:
  test_cgrp_local_storage:PASS:join_cgroup /cgrp_local_storage 0 nsec
  test_attach_cgroup:PASS:skel_open 0 nsec
  test_attach_cgroup:PASS:prog_attach 0 nsec
  test_attach_cgroup:PASS:prog_attach 0 nsec
  libbpf: prog 'update_cookie_tracing': failed to attach: ERROR: strerror_r(-524)=22
  test_attach_cgroup:FAIL:prog_attach unexpected error: -524
  #48/2    cgrp_local_storage/attach_cgroup:FAIL
  test_recursion:PASS:skel_open_and_load 0 nsec
  libbpf: prog 'on_lookup': failed to attach: ERROR: strerror_r(-524)=22
  libbpf: prog 'on_lookup': failed to auto-attach: -524
  test_recursion:FAIL:skel_attach unexpected error: -524 (errno 524)
  #48/3    cgrp_local_storage/recursion:FAIL
  test_yes_rcu_lock:PASS:skel_open 0 nsec
  test_yes_rcu_lock:PASS:skel_load 0 nsec
  libbpf: prog 'yes_rcu_lock': failed to attach: ERROR: strerror_r(-524)=22
  libbpf: prog 'yes_rcu_lock': failed to auto-attach: -524
  test_yes_rcu_lock:FAIL:skel_attach unexpected error: -524 (errno 524)
  #48/6    cgrp_local_storage/yes_rcu_lock:FAIL
  #48      cgrp_local_storage:FAIL
  Summary: 0/4 PASSED, 0 SKIPPED, 1 FAILED

No panics any more (The test still failed because lack of BPF trampoline
which I am actively working on).

Fixes: 5dc615520c ("LoongArch: Add BPF JIT support")
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-12-09 15:49:16 +08:00
Hengqi Chen
d6c5f06e46 LoongArch: Preserve syscall nr across execve()
Currently, we store syscall nr in pt_regs::regs[11] and syscall execve()
accidentally overrides it during its execution:

    sys_execve()
      -> do_execve()
        -> do_execveat_common()
          -> bprm_execve()
            -> exec_binprm()
              -> search_binary_handler()
                -> load_elf_binary()
                  -> ELF_PLAT_INIT()

ELF_PLAT_INIT() reset regs[11] to 0, so in syscall_exit_to_user_mode()
we later get a wrong syscall nr. This breaks tools like execsnoop since
it relies on execve() tracepoints.

Skip pt_regs::regs[11] reset in ELF_PLAT_INIT() to fix the issue.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-12-09 15:49:15 +08:00
Jinyang He
97ceddbc94 LoongArch: Set unwind stack type to unknown rather than set error flag
During unwinding, unwind_done() is used as an end condition. Normally it
unwind to the user stack and then set the stack type to unknown, which
is a normal exit. When something unexpected happens in unwind process
and we cannot unwind anymore, we should set the error flag, and also set
the stack type to unknown to indicate that the unwind process can not
continue. The error flag emphasizes that the unwind process produce an
unexpected error. There is no unexpected things when we unwind the PT_REGS
in the top of IRQ stack and find out that is an user mode PT_REGS. Thus,
we should not set error flag and just set stack type to unknown.

Reported-by: Hengqi Chen <hengqi.chen@gmail.com>
Acked-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-12-09 15:49:15 +08:00
Xi Ruoyao
8146c5b349 LoongArch: Slightly clean up drdtime()
As we are just discarding the stable clock ID, simply write it into
$zero instead of allocating a temporary register.

Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-12-09 15:49:15 +08:00
WANG Rui
eea673e9d5 LoongArch: Apply dynamic relocations for LLD
For the following assembly code:

     .text
     .global func
 func:
     nop

     .data
 var:
     .dword func

When linked with `-pie`, GNU LD populates the `var` variable with the
pre-relocated value of `func`. However, LLVM LLD does not exhibit the
same behavior. This issue also arises with the `kernel_entry` in arch/
loongarch/kernel/head.S:

 _head:
     .word   MZ_MAGIC                /* "MZ", MS-DOS header */
     .org    0x8
     .dword  kernel_entry            /* Kernel entry point */

The correct kernel entry from the MS-DOS header is crucial for jumping
to vmlinux from zboot. This necessity is why the compressed relocatable
kernel compiled by Clang encounters difficulties in booting.

To address this problem, it is proposed to apply dynamic relocations to
place with `--apply-dynamic-relocs`.

Link: https://github.com/ClangBuiltLinux/linux/issues/1962
Signed-off-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-12-09 15:49:15 +08:00
Linus Torvalds
f2e8a57ee9 SCSI fixes on 20231208
One tiny fix to the be2iscsi driver fixing a memory leak in an error leg.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "One tiny fix to the be2iscsi driver fixing a memory leak in an error
  leg"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: be2iscsi: Fix a memleak in beiscsi_init_wrb_handle()
2023-12-08 12:40:38 -08:00
Linus Torvalds
d71369dbe0 block-6.7-2023-12-08
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Merge tag 'block-6.7-2023-12-08' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:
 "Nothing major in here, just miscellanous fixes for MD and NVMe:

   - NVMe pull request via Keith:
      - Proper nvme ctrl state setting (Keith)
      - Passthrough command optimization (Keith)
      - Spectre fix (Nitesh)
      - Kconfig clarifications (Shin'ichiro)
      - Frozen state deadlock fix (Bitao)
      - Power setting quirk (Georg)

   - MD pull requests via Song:
      - 6.7 regresisons with recovery/sync (Yu)
      - Reshape fix (David)"

* tag 'block-6.7-2023-12-08' of git://git.kernel.dk/linux:
  md: split MD_RECOVERY_NEEDED out of mddev_resume
  nvme-pci: Add sleep quirk for Kingston drives
  md: fix stopping sync thread
  md: don't leave 'MD_RECOVERY_FROZEN' in error path of md_set_readonly()
  md: fix missing flush of sync_work
  nvme: fix deadlock between reset and scan
  nvme: prevent potential spectre v1 gadget
  nvme: improve NVME_HOST_AUTH and NVME_TARGET_AUTH config descriptions
  nvme-ioctl: move capable() admin check to the end
  nvme: ensure reset state check ordering
  nvme: introduce helper function to get ctrl state
  md/raid6: use valid sector values to determine if an I/O should wait on the reshape
2023-12-08 12:36:45 -08:00
Linus Torvalds
689659c988 io_uring-6.7-2023-12-08
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Merge tag 'io_uring-6.7-2023-12-08' of git://git.kernel.dk/linux

Pull io_uring fixes from Jens Axboe:
 "Two minor fixes for issues introduced in this release cycle, and two
  fixes for issues or potential issues that are heading to stable.

  One of these ends up disabling passing io_uring file descriptors via
  SCM_RIGHTS. There really shouldn't be an overlap between that kind of
  historic use case and modern usage of io_uring, which is why this was
  deemed appropriate"

* tag 'io_uring-6.7-2023-12-08' of git://git.kernel.dk/linux:
  io_uring/af_unix: disable sending io_uring over sockets
  io_uring/kbuf: check for buffer list readiness after NULL check
  io_uring/kbuf: Fix an NULL vs IS_ERR() bug in io_alloc_pbuf_ring()
  io_uring: fix mutex_unlock with unreferenced ctx
2023-12-08 12:32:38 -08:00
Linus Torvalds
8aa74869d2 RDMA first rc pull for v6.7
Primarily rtrs and irdma fixes:
 
 - Fix uninitialized value in ib_get_eth_speed()
 
 - Fix hns refusing to work if userspace doesn't select the correct
   congestion control algorithm
 
 - Several irdma fixes - unreliable Send Queue Drain, use after free, 64k
   page size bugs, device removal races
 
 - Several rtrs bug fixes - crashes, memory leaks, use after free, bad
   credit accounting, bogus WARN_ON
 
 - Typos and a MAINTAINER update
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Primarily rtrs and irdma fixes:

   - Fix uninitialized value in ib_get_eth_speed()

   - Fix hns refusing to work if userspace doesn't select the correct
     congestion control algorithm

   - Several irdma fixes - unreliable Send Queue Drain, use after free,
     64k page size bugs, device removal races

   - Several rtrs bug fixes - crashes, memory leaks, use after free, bad
     credit accounting, bogus WARN_ON

   - Typos and a MAINTAINER update"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/irdma: Avoid free the non-cqp_request scratch
  RDMA/irdma: Fix support for 64k pages
  RDMA/irdma: Ensure iWarp QP queue memory is OS paged aligned
  RDMA/core: Fix umem iterator when PAGE_SIZE is greater then HCA pgsz
  RDMA/irdma: Fix UAF in irdma_sc_ccq_get_cqe_info()
  RDMA/bnxt_re: Correct module description string
  RDMA/rtrs-clt: Remove the warnings for req in_use check
  RDMA/rtrs-clt: Fix the max_send_wr setting
  RDMA/rtrs-srv: Destroy path files after making sure no IOs in-flight
  RDMA/rtrs-srv: Free srv_mr iu only when always_invalidate is true
  RDMA/rtrs-srv: Check return values while processing info request
  RDMA/rtrs-clt: Start hb after path_up
  RDMA/rtrs-srv: Do not unconditionally enable irq
  MAINTAINERS: Add Chengchang Tang as Hisilicon RoCE maintainer
  RDMA/irdma: Add wait for suspend on SQD
  RDMA/irdma: Do not modify to SQD on error
  RDMA/hns: Fix unnecessary err return when using invalid congest control algorithm
  RDMA/core: Fix uninit-value access in ib_get_eth_speed()
2023-12-08 12:27:11 -08:00
Linus Torvalds
081ed90a8c Power management fix for 6.7-rc5
Fix cpufreq reference counting in the DTPM (dynamic thermal and
 power management) power capping framework (Lukasz Luba).
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Merge tag 'pm-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "Fix cpufreq reference counting in the DTPM (dynamic thermal and power
  management) power capping framework (Lukasz Luba)"

* tag 'pm-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  powercap: DTPM: Fix missing cpufreq_cpu_put() calls
2023-12-08 11:57:55 -08:00
Linus Torvalds
c3e2f9bda2 ACPI fix for 6.7-rc5
Fix a possible crash on an attempt to free unallocated memory in the
 error path of acpi_evaluate_reference() that has been introduced by one
 of the recent changes (Rafael Wysocki).
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Merge tag 'acpi-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix a possible crash on an attempt to free unallocated memory in the
  error path of acpi_evaluate_reference() that has been introduced by
  one of the recent changes (Rafael Wysocki)"

* tag 'acpi-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: utils: Fix error path in acpi_evaluate_reference()
2023-12-08 11:54:07 -08:00
Linus Torvalds
0dfe14fca9 hwmon fixes for v6.7-rc5
- acpi_power_meter: Fix 4.29 MW output sen if acpi reports bad data
 
 - corsair-psu: Fix ability to probe if the driver is built into the kernel
 
 - ltc2991: Fix spelling mistake "contiuous" -> "continuous"
 
 - max31827: Add missing regulator header file include
 
 - nzxt-kraken2: Fix error handling path in probe function
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Merge tag 'hwmon-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - acpi_power_meter: Fix 4.29 MW output seen if acpi reports bad data

 - corsair-psu: Fix ability to probe if the driver is built into the kernel

 - ltc2991: Fix spelling mistake "contiuous" -> "continuous"

 - max31827: Add missing regulator header file include

 - nzxt-kraken2: Fix error handling path in probe function

* tag 'hwmon-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (corsair-psu) Fix probe when built-in
  hwmon: (nzxt-kraken2) Fix error handling path in kraken2_probe()
  hwmon: (acpi_power_meter) Fix 4.29 MW bug
  hwmon: max31827: include regulator header
  hwmon: ltc2991: Fix spelling mistake "contiuous" -> "continuous"
2023-12-08 11:46:41 -08:00
Linus Torvalds
d650b3beff pwm fixes for v6.7-rc5
This fixes a null pointer exception in the bcm2835 pwm driver. The
 problem was introduced by a combination of two commits merged for
 v6.7-rc1 where each change alone would have been fine.
 
 Thanks to Florian Fainelli for noticing and fixing the issue.
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Merge tag 'pwm/for-6.7-rc5-fixes' of https://git.pengutronix.de/git/ukl/linux

Pull pwm fix from Uwe Kleine-König:
 "This fixes a null pointer exception in the bcm2835 pwm driver.

  The problem was introduced by a combination of two commits merged for
  v6.7-rc1 where each change alone would have been fine.

  Thanks to Florian Fainelli for noticing and fixing the issue"

* tag 'pwm/for-6.7-rc5-fixes' of https://git.pengutronix.de/git/ukl/linux:
  pwm: bcm2835: Fix NPD in suspend/resume
2023-12-08 11:41:56 -08:00
Linus Torvalds
b8b68d2fd4 sound fixes for 6.7-rc5
This is a typical bump in the middle of its way; we've gathered lots
 of fixes (mostly for ASoC) at this time.
 
 - PCM array out-of-bound access fix
 - Correction of SOC PCM merge error
 - Lots of ASoC SOF Intel updates
 - A few ASoC AMD quirks
 - More proper timer handling in PCM test module
 - HD-audio and USB-audio quirks as usual
 - Other device-specific fixes for various ASoC codecs
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Merge tag 'sound-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This is a typical bump in the middle of its way; we've gathered lots
  of fixes (mostly for ASoC) at this time:

   - PCM array out-of-bound access fix

   - Correction of SOC PCM merge error

   - Lots of ASoC SOF Intel updates

   - A few ASoC AMD quirks

   - More proper timer handling in PCM test module

   - HD-audio and USB-audio quirks as usual

   - Other device-specific fixes for various ASoC codecs"

* tag 'sound-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (39 commits)
  ALSA: hda/realtek: Add quirk for Lenovo Yoga Pro 7
  ALSA: pcmtest: stop timer before buffer is released
  ALSA: hda/realtek: Add Framework laptop 16 to quirks
  ALSA: hda/realtek: add new Framework laptop to quirks
  ALSA: pcm: fix out-of-bounds in snd_pcm_state_names
  ASoC: qcom: sc8280xp: Limit speaker digital volumes
  ASoC: ops: add correct range check for limiting volume
  ALSA: hda/realtek: Enable headset on Lenovo M90 Gen5
  ALSA: hda/realtek: fix speakers on XPS 9530 (2023)
  ALSA: usb-audio: Add Pioneer DJM-450 mixer controls
  ASoC: wm_adsp: fix memleak in wm_adsp_buffer_populate
  ASoC: da7219: Support low DC impedance headset
  ASoC: amd: acp: Add support for a new Huawei Matebook laptop
  ALSA: hda/realtek: Apply quirk for ASUS UM3504DA
  ASoC: SOF: ipc4-topology: Correct data structures for the GAIN module
  ASoC: SOF: ipc4-topology: Correct data structures for the SRC module
  ASoC: hdac_hda: Conditionally register dais for HDMI and Analog
  ASoC: codecs: lpass-tx-macro: set active_decimator correct default value
  ASoC: amd: yc: Fix non-functional mic on ASUS E1504FA
  ASoC: amd: yc: Add DMI entry to support System76 Pangolin 13
  ...
2023-12-08 11:29:45 -08:00
Linus Torvalds
38bafa65b1 drm fixes for v6.7-rc5
atomic-helpers:
 - invoke end_fb_access while owning plane state
 
 i915:
 - fix a missing dep for a previous fix
 - Relax BXT/GLK DSI transcoder hblank limits
 - Fix DP MST .mode_valid_ctx() return values
 - Reject DP MST modes that require bigjoiner (as it's not yet supported on DP MST)
 - Fix _intel_dsb_commit() variable type to allow negative values
 
 nouveau:
 - document some bits of gsp rm
 - flush vmm more on tu102 to avoid hangs
 
 panfrost:
 - fix imported dma-buf objects residency
 - fix device freq update
 
 bridge:
 - tc358768 - fix Kconfig
 
 amdgpu:
 - Disable MCBP on gfx9
 - DC vbios fix
 - eDP fix
 - dml2 UBSAN fix
 - SMU 14 fix
 - RAS fixes
 - dml KASAN/KCSAN fix
 - PSP 13 fix
 - Clockgating fixes
 - Suspend fix
 
 exynos:
 - fix pointer dereference
 - fix wrong error check
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Merge tag 'drm-fixes-2023-12-08' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Regular weekly fixes, mostly amdgpu and i915 as usual. A couple of
  nouveau, panfrost, one core and one bridge Kconfig.

  Seems about normal for rc5.

  atomic-helpers:
   - invoke end_fb_access while owning plane state

  i915:
   - fix a missing dep for a previous fix
   - Relax BXT/GLK DSI transcoder hblank limits
   - Fix DP MST .mode_valid_ctx() return values
   - Reject DP MST modes that require bigjoiner (as it's not yet
     supported on DP MST)
   - Fix _intel_dsb_commit() variable type to allow negative values

  nouveau:
   - document some bits of gsp rm
   - flush vmm more on tu102 to avoid hangs

  panfrost:
   - fix imported dma-buf objects residency
   - fix device freq update

  bridge:
   - tc358768 - fix Kconfig

  amdgpu:
   - Disable MCBP on gfx9
   - DC vbios fix
   - eDP fix
   - dml2 UBSAN fix
   - SMU 14 fix
   - RAS fixes
   - dml KASAN/KCSAN fix
   - PSP 13 fix
   - Clockgating fixes
   - Suspend fix

  exynos:
   - fix pointer dereference
   - fix wrong error check"

* tag 'drm-fixes-2023-12-08' of git://anongit.freedesktop.org/drm/drm: (27 commits)
  drm/exynos: fix a wrong error checking
  drm/exynos: fix a potential error pointer dereference
  drm/amdgpu: fix buffer funcs setting order on suspend
  drm/amdgpu: Avoid querying DRM MGCG status
  drm/amdgpu: Update HDP 4.4.2 clock gating flags
  drm/amdgpu: Add NULL checks for function pointers
  drm/amdgpu: Restrict extended wait to PSP v13.0.6
  drm/amd/display: Increase frame warning limit with KASAN or KCSAN in dml
  drm/amdgpu: optimize the printing order of error data
  drm/amdgpu: Update fw version for boot time error query
  drm/amd/pm: support new mca smu error code decoding
  drm/amd/swsmu: update smu v14_0_0 driver if version and metrics table
  drm/amd/display: Fix array-index-out-of-bounds in dml2
  drm/amd/display: Add monitor patch for specific eDP
  drm/amd/display: Use channel_width = 2 for vram table 3.0
  drm/amdgpu: disable MCBP by default
  drm/atomic-helpers: Invoke end_fb_access while owning plane state
  drm/i915: correct the input parameter on _intel_dsb_commit()
  drm/i915/mst: Reject modes that require the bigjoiner
  drm/i915/mst: Fix .mode_valid_ctx() return values
  ...
2023-12-08 11:17:44 -08:00
Sean Christopherson
4cdf351d36 KVM: SVM: Update EFER software model on CR0 trap for SEV-ES
In general, activating long mode involves setting the EFER_LME bit in
the EFER register and then enabling the X86_CR0_PG bit in the CR0
register. At this point, the EFER_LMA bit will be set automatically by
hardware.

In the case of SVM/SEV guests where writes to CR0 are intercepted, it's
necessary for the host to set EFER_LMA on behalf of the guest since
hardware does not see the actual CR0 write.

In the case of SEV-ES guests where writes to CR0 are trapped instead of
intercepted, the hardware *does* see/record the write to CR0 before
exiting and passing the value on to the host, so as part of enabling
SEV-ES support commit f1c6366e30 ("KVM: SVM: Add required changes to
support intercepts under SEV-ES") dropped special handling of the
EFER_LMA bit with the understanding that it would be set automatically.

However, since the guest never explicitly sets the EFER_LMA bit, the
host never becomes aware that it has been set. This becomes problematic
when userspace tries to get/set the EFER values via
KVM_GET_SREGS/KVM_SET_SREGS, since the EFER contents tracked by the host
will be missing the EFER_LMA bit, and when userspace attempts to pass
the EFER value back via KVM_SET_SREGS it will fail a sanity check that
asserts that EFER_LMA should always be set when X86_CR0_PG and EFER_LME
are set.

Fix this by always inferring the value of EFER_LMA based on X86_CR0_PG
and EFER_LME, regardless of whether or not SEV-ES is enabled.

Fixes: f1c6366e30 ("KVM: SVM: Add required changes to support intercepts under SEV-ES")
Reported-by: Peter Gonda <pgonda@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210507165947.2502412-2-seanjc@google.com>
[A two year old patch that was revived after we noticed the failure in
 KVM_SET_SREGS and a similar patch was posted by Michael Roth.  This is
 Sean's patch, but with Michael's more complete commit message. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-12-08 13:37:05 -05:00
Armin Wolf
307004e8b2 hwmon: (corsair-psu) Fix probe when built-in
It seems that when the driver is built-in, the HID bus is
initialized after the driver is loaded, which whould cause
module_hid_driver() to fail.
Fix this by registering the driver after the HID bus using
late_initcall() in accordance with other hwmon HID drivers.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231207210723.222552-1-W_Armin@gmx.de
[groeck: Dropped "compile tested" comment; the patch has been tested
 but the tester did not provide a Tested-by: tag]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-12-08 10:36:02 -08:00
David Woodhouse
96f124015f KVM: selftests: add -MP to CFLAGS
Using -MD without -MP causes build failures when a header file is deleted
or moved. With -MP, the compiler will emit phony targets for the header
files it lists as dependencies, and the Makefiles won't refuse to attempt
to rebuild a C unit which no longer includes the deleted header.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lore.kernel.org/r/9fc8b5395321abbfcaf5d78477a9a7cd350b08e4.camel@infradead.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-12-08 13:18:50 -05:00
angquan yu
4a073e8134 KVM: selftests: Actually print out magic token in NX hugepages skip message
Pass MAGIC_TOKEN to __TEST_REQUIRE() when printing the help message about
needing to pass a magic value to manually run the NX hugepages test,
otherwise the help message will contain garbage.

  In file included from x86_64/nx_huge_pages_test.c:15:
  x86_64/nx_huge_pages_test.c: In function ‘main’:
  include/test_util.h:40:32: error: format ‘%d’ expects a matching ‘int’ argument [-Werror=format=]
     40 |                 ksft_exit_skip("- " fmt "\n", ##__VA_ARGS__);   \
        |                                ^~~~
  x86_64/nx_huge_pages_test.c:259:9: note: in expansion of macro ‘__TEST_REQUIRE’
    259 |         __TEST_REQUIRE(token == MAGIC_TOKEN,
        |         ^~~~~~~~~~~~~~

Signed-off-by: angquan yu <angquan21@gmail.com>
Link: https://lore.kernel.org/r/20231128221105.63093-1-angquan21@gmail.com
[sean: rewrite shortlog+changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-12-08 13:18:45 -05:00
Paolo Bonzini
6254eebad4 KVM fixes for 6.7-rcN:
- When checking if a _running_ vCPU is "in-kernel", i.e. running at CPL0,
    get the CPL directly instead of relying on preempted_in_kernel, which
    is valid if and only if the vCPU was preempted, i.e. NOT running.
 
  - Set .owner for various KVM file_operations so that files refcount the
    KVM module until KVM is done executing _all_ code, including the last
    few instructions of kvm_put_kvm().  And then revert the misguided
    attempt to rely on "struct kvm" refcounts to pin KVM-the-module.
 
  - Fix a benign "return void" that was recently introduced.
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Merge tag 'kvm-x86-fixes-6.7-rcN' of https://github.com/kvm-x86/linux into kvm-master

KVM fixes for 6.7-rcN:

 - When checking if a _running_ vCPU is "in-kernel", i.e. running at CPL0,
   get the CPL directly instead of relying on preempted_in_kernel, which
   is valid if and only if the vCPU was preempted, i.e. NOT running.

 - Set .owner for various KVM file_operations so that files refcount the
   KVM module until KVM is done executing _all_ code, including the last
   few instructions of kvm_put_kvm().  And then revert the misguided
   attempt to rely on "struct kvm" refcounts to pin KVM-the-module.

 - Fix a benign "return void" that was recently introduced.
2023-12-08 13:13:45 -05:00
Paolo Bonzini
aa0ae3df80 Two small but important bugfixes.
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Merge tag 'kvm-s390-master-6.7-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-master

Two small but important bugfixes.
2023-12-08 13:13:12 -05:00
Paolo Bonzini
c8a11a938c KVM/arm64 fixes for 6.7, take #1
- Avoid mapping vLPIs that have already been mapped
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Merge tag 'kvmarm-fixes-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master

KVM/arm64 fixes for 6.7, take #1

 - Avoid mapping vLPIs that have already been mapped
2023-12-08 13:11:42 -05:00
Linus Torvalds
4df7c5fde3 RISC-V Fixes for 6.7-rc5
* A pair of fixes to the new module load-time relocation code.
 * A fix for hwprobe overflowing on rv32.
 * A fix for to correctly decode C.SWSP and C.SDSP, which manifests in
   misaligned access handling.
 * A fix for a boot-time shadow call stack initialization ordering issue.
 * A fix for Andes' errata probing, which was calling
   riscv_noncoherent_supported() too late in the boot process and
   triggering an oops.
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Merge tag 'riscv-for-linus-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A pair of fixes to the new module load-time relocation code

 - A fix for hwprobe overflowing on rv32

 - A fix for to correctly decode C.SWSP and C.SDSP, which manifests in
   misaligned access handling

 - A fix for a boot-time shadow call stack initialization ordering issue

 - A fix for Andes' errata probing, which was calling
   riscv_noncoherent_supported() too late in the boot process and
   triggering an oops

* tag 'riscv-for-linus-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: errata: andes: Probe for IOCP only once in boot stage
  riscv: Fix SMP when shadow call stacks are enabled
  dt-bindings: perf: riscv,pmu: drop unneeded quotes
  riscv: fix misaligned access handling of C.SWSP and C.SDSP
  RISC-V: hwprobe: Always use u64 for extension bits
  Support rv32 ULEB128 test
  riscv: Correct type casting in module loading
  riscv: Safely remove entries from relocation list
2023-12-08 09:03:54 -08:00
Linus Torvalds
a6adef8987 ARM: SoC fixes for v6.7
Most of the changes are devicetree fixes for NXP, Mediatek, Rockchips
 Arm machines as well as Microchip RISC-V, and most of these address
 build-time warnings for spec violations and other minor issues. One of
 the Mediatek warnings was enabled by default and prevented a clean build.
 The ones that address serious runtime issues are all on the i.MX platform:
 
  - a boot time panic on imx8qm
  - USB hanging under load on imx8
  - regressions on the imx93 ethernet phy
 
 Code fixes include a minor error handling for the i.MX PMU driver, and
 a number of firmware driver fixes:
 
  - OP-TEE fix for supplicant based device enumeration, and a new
    sysfs attribute to needed to fix a race against userspace
 
  - Arm SCMI fix for possible truncation/overflow in the frequency
    computations
 
  - Multiple FF-A fixes for the newly added notification support.
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Merge tag 'soc-fixes-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Most of the changes are devicetree fixes for NXP, Mediatek, Rockchips
  Arm machines as well as Microchip RISC-V, and most of these address
  build-time warnings for spec violations and other minor issues. One of
  the Mediatek warnings was enabled by default and prevented a clean
  build.

  The ones that address serious runtime issues are all on the i.MX
  platform:

   - a boot time panic on imx8qm

   - USB hanging under load on imx8

   - regressions on the imx93 ethernet phy

  Code fixes include a minor error handling for the i.MX PMU driver, and
  a number of firmware driver fixes:

   - OP-TEE fix for supplicant based device enumeration, and a new sysfs
     attribute to needed to fix a race against userspace

   - Arm SCMI fix for possible truncation/overflow in the frequency
     computations

   - Multiple FF-A fixes for the newly added notification support"

* tag 'soc-fixes-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (55 commits)
  MAINTAINERS: change the S32G2 maintainer's email address.
  arm64: dts: rockchip: Fix eMMC Data Strobe PD on rk3588
  ARM: dts: imx28-xea: Pass the 'model' property
  ARM: dts: imx7: Declare timers compatible with fsl,imx6dl-gpt
  MAINTAINERS: reinstate freescale ARM64 DT directory in i.MX entry
  arm64: dts: imx8-apalis: set wifi regulator to always-on
  ARM: imx: Check return value of devm_kasprintf in imx_mmdc_perf_init
  arm64: dts: imx8ulp: update gpio node name to align with register address
  arm64: dts: imx93: update gpio node name to align with register address
  arm64: dts: imx93: correct mediamix power
  arm64: dts: imx8qm: Add imx8qm's own pm to avoid panic during startup
  arm64: dts: freescale: imx8-ss-dma: Fix #pwm-cells
  arm64: dts: freescale: imx8-ss-lsio: Fix #pwm-cells
  dt-bindings: pwm: imx-pwm: Unify #pwm-cells for all compatibles
  ARM: dts: imx6ul-pico: Describe the Ethernet PHY clock
  arm64: dts: imx8mp: imx8mq: Add parkmode-disable-ss-quirk on DWC3
  arm64: dts: rockchip: Fix PCI node addresses on rk3399-gru
  arm64: dts: rockchip: drop interrupt-names property from rk3588s dfi
  firmware: arm_scmi: Fix possible frequency truncation when using level indexing mode
  firmware: arm_scmi: Fix frequency truncation by promoting multiplier type
  ...
2023-12-08 08:58:39 -08:00
Linus Torvalds
17894c2a7a tracing fixes for v6.7-rc4:
- Snapshot buffer issues
 
   1. When instances started allowing latency tracers, it uses
      a snapshot buffer (another buffer that is not written to
      but swapped with the main buffer that is). The snapshot buffer
      needs to be the same size as the main buffer. But when the
      snapshot buffers were added to instances, the code to make
      the snapshot equal to the main buffer still was only doing it
      for the main buffer and not the instances.
 
   2. Need to stop the current tracer when resizing the buffers.
      Otherwise there can be a race if the tracer decides to make
      a snapshot between resizing the main buffer and the snapshot
      buffer.
 
   3. When a tracer is "stopped" in disables both the main buffer
      and the snapshot buffer. This needs to be done for instances
      and not only the main buffer, now that instances also have
      a snapshot buffer.
 
 - Buffered event for filtering issues
 
   When filtering is enabled, because events can be dropped often,
   it is quicker to copy the event into a temp buffer and write that
   into the main buffer if it is not filtered or just drop the event
   if it is, than to write the event into the ring buffer and then
   try to discard it. This temp buffer is allocated and needs special
   synchronization to do so. But there were some issues with that:
 
   1. When disabling the filter and freeing the buffer, a call to all
      CPUs is required to stop each per_cpu usage. But the code
      called smp_call_function_many() which does not include the
      current CPU. If the task is migrated to another CPU when it
      enables the CPUs via smp_call_function_many(), it will not enable
      the one it is currently on and this causes issues later on.
      Use on_each_cpu_mask() instead, which includes the current CPU.
 
    2. When the allocation of the buffered event fails, it can give
       a warning. But the buffered event is just an optimization
       (it's still OK to write to the ring buffer and free it).
       Do not WARN in this case.
 
    3. The freeing of the buffer event requires synchronization.
       First a counter is decremented to zero so that no new uses
       of it will happen. Then it sets the buffered event to NULL,
       and finally it frees the buffered event. There's a synchronize_rcu()
       between the counter decrement and the setting the variable to
       NULL, but only a smp_wmb() between that and the freeing of the
       buffer. It is theoretically possible that a user missed seeing
       the decrement, but will use the buffer after it is free. Another
       synchronize_rcu() is needed in place of that smp_wmb().
 
 - ring buffer timestamps on 32 bit machines
 
   The ring buffer timestamp on 32 bit machines has to break the 64 bit
   number into multiple values as cmpxchg is required on it, and a
   64 bit cmpxchg on 32 bit architectures is very slow. The code use
   to just use two 32 bit values and make it a 60 bit timestamp where
   the other 4 bits were used as counters for synchronization. It later
   came known that the timestamp on 32 bit still need all 64 bits in
   some cases. So 3 words were created to handle the 64 bits. But issues
   arised with this:
 
    1. The synchronization logic still only compared the counter
       with the first two, but not with the third number, so the
       synchronization could fail unknowingly.
 
    2. A check on discard of an event could race if an event happened
       between the discard and updating one of the counters. The
       counter needs to be updated (forcing an absolute timestamp
       and not to use a delta) before the actual discard happens.
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Merge tag 'trace-v6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Snapshot buffer issues:

   1. When instances started allowing latency tracers, it uses a
      snapshot buffer (another buffer that is not written to but swapped
      with the main buffer that is). The snapshot buffer needs to be the
      same size as the main buffer. But when the snapshot buffers were
      added to instances, the code to make the snapshot equal to the
      main buffer still was only doing it for the main buffer and not
      the instances.

   2. Need to stop the current tracer when resizing the buffers.
      Otherwise there can be a race if the tracer decides to make a
      snapshot between resizing the main buffer and the snapshot buffer.

   3. When a tracer is "stopped" in disables both the main buffer and
      the snapshot buffer. This needs to be done for instances and not
      only the main buffer, now that instances also have a snapshot
      buffer.

 - Buffered event for filtering issues:

   When filtering is enabled, because events can be dropped often, it is
   quicker to copy the event into a temp buffer and write that into the
   main buffer if it is not filtered or just drop the event if it is,
   than to write the event into the ring buffer and then try to discard
   it. This temp buffer is allocated and needs special synchronization
   to do so. But there were some issues with that:

   1. When disabling the filter and freeing the buffer, a call to all
      CPUs is required to stop each per_cpu usage. But the code called
      smp_call_function_many() which does not include the current CPU.
      If the task is migrated to another CPU when it enables the CPUs
      via smp_call_function_many(), it will not enable the one it is
      currently on and this causes issues later on. Use
      on_each_cpu_mask() instead, which includes the current CPU.

    2.When the allocation of the buffered event fails, it can give a
      warning. But the buffered event is just an optimization (it's
      still OK to write to the ring buffer and free it). Do not WARN in
      this case.

    3.The freeing of the buffer event requires synchronization. First a
      counter is decremented to zero so that no new uses of it will
      happen. Then it sets the buffered event to NULL, and finally it
      frees the buffered event. There's a synchronize_rcu() between the
      counter decrement and the setting the variable to NULL, but only a
      smp_wmb() between that and the freeing of the buffer. It is
      theoretically possible that a user missed seeing the decrement,
      but will use the buffer after it is free. Another
      synchronize_rcu() is needed in place of that smp_wmb().

 - ring buffer timestamps on 32 bit machines

   The ring buffer timestamp on 32 bit machines has to break the 64 bit
   number into multiple values as cmpxchg is required on it, and a 64
   bit cmpxchg on 32 bit architectures is very slow. The code use to
   just use two 32 bit values and make it a 60 bit timestamp where the
   other 4 bits were used as counters for synchronization. It later came
   known that the timestamp on 32 bit still need all 64 bits in some
   cases. So 3 words were created to handle the 64 bits. But issues
   arised with this:

    1. The synchronization logic still only compared the counter with
       the first two, but not with the third number, so the
       synchronization could fail unknowingly.

    2. A check on discard of an event could race if an event happened
       between the discard and updating one of the counters. The counter
       needs to be updated (forcing an absolute timestamp and not to use
       a delta) before the actual discard happens.

* tag 'trace-v6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Test last update in 32bit version of __rb_time_read()
  ring-buffer: Force absolute timestamp on discard of event
  tracing: Fix a possible race when disabling buffered events
  tracing: Fix a warning when allocating buffered events fails
  tracing: Fix incomplete locking when disabling buffered events
  tracing: Disable snapshot buffer when stopping instance tracers
  tracing: Stop current tracer when resizing buffer
  tracing: Always update snapshot buffer size
2023-12-08 08:44:43 -08:00
Linus Torvalds
8e819a7623 31 hotfixes. 10 of these address pre-6.6 issues and are marked cc:stable.
The remainder address post-6.6 issues or aren't considered serious enough
 to justify backporting.
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Merge tag 'mm-hotfixes-stable-2023-12-07-18-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "31 hotfixes. Ten of these address pre-6.6 issues and are marked
  cc:stable. The remainder address post-6.6 issues or aren't considered
  serious enough to justify backporting"

* tag 'mm-hotfixes-stable-2023-12-07-18-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits)
  mm/madvise: add cond_resched() in madvise_cold_or_pageout_pte_range()
  nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage()
  mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI
  scripts/gdb: fix lx-device-list-bus and lx-device-list-class
  MAINTAINERS: drop Antti Palosaari
  highmem: fix a memory copy problem in memcpy_from_folio
  nilfs2: fix missing error check for sb_set_blocksize call
  kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP
  units: add missing header
  drivers/base/cpu: crash data showing should depends on KEXEC_CORE
  mm/damon/sysfs-schemes: add timeout for update_schemes_tried_regions
  scripts/gdb/tasks: fix lx-ps command error
  mm/Kconfig: make userfaultfd a menuconfig
  selftests/mm: prevent duplicate runs caused by TEST_GEN_PROGS
  mm/damon/core: copy nr_accesses when splitting region
  lib/group_cpus.c: avoid acquiring cpu hotplug lock in group_cpus_evenly
  checkstack: fix printed address
  mm/memory_hotplug: fix error handling in add_memory_resource()
  mm/memory_hotplug: add missing mem_hotplug_lock
  .mailmap: add a new address mapping for Chester Lin
  ...
2023-12-08 08:36:23 -08:00
Arnd Bergmann
fd1e5745f8 Devicetree fixes for the 6.7-cycle.
All over the place this time. From adapting the size of the vdec nodes
 on rk3328 and rk3399, fixing some wrong pinctrl settings on rk3128 and
 the Turing RK1 board, emmc-settings fixes on rk3588 and interrupt-name
 mishaps, down to some dt-cleanups.
 
 Also this adds the missing rockchip,rk3588-pmugrf compatible to the soc
 grf binding, that I somehow messed up during the pull requests for the
 -rc1 . At least with it included the dt-checker is happier.
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Merge tag 'v6.7-rockchip-dtsfixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into arm/fixes

Devicetree fixes for the 6.7-cycle.

All over the place this time. From adapting the size of the vdec nodes
on rk3328 and rk3399, fixing some wrong pinctrl settings on rk3128 and
the Turing RK1 board, emmc-settings fixes on rk3588 and interrupt-name
mishaps, down to some dt-cleanups.

Also this adds the missing rockchip,rk3588-pmugrf compatible to the soc
grf binding, that I somehow messed up during the pull requests for the
-rc1 . At least with it included the dt-checker is happier.

* tag 'v6.7-rockchip-dtsfixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  arm64: dts: rockchip: Fix eMMC Data Strobe PD on rk3588
  arm64: dts: rockchip: Fix PCI node addresses on rk3399-gru
  arm64: dts: rockchip: drop interrupt-names property from rk3588s dfi
  arm64: dts: rockchip: Fix Turing RK1 interrupt pinctrls
  ARM: dts: rockchip: Fix sdmmc_pwren's pinmux setting for RK3128
  arm64: dts: rockchip: minor whitespace cleanup around '='
  ARM: dts: rockchip: minor whitespace cleanup around '='
  dt-bindings: soc: rockchip: grf: add rockchip,rk3588-pmugrf
  arm64: dts: rockchip: fix rk356x pcie msg interrupt name
  arm64: dts: rockchip: Expand reg size of vdec node for RK3399
  arm64: dts: rockchip: Expand reg size of vdec node for RK3328

Link: https://lore.kernel.org/r/2709704.mvXUDI8C0e@phil
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-12-08 08:36:25 +01:00
Dave Airlie
b7b5a56ace Two fixups
- Fix a potential error pointer dereference by checking the return value
   of exynos_drm_crtc_get_by_type() function before accessing to crtc
   object.
 - Fix a wrong error checking in exynos_drm_dma.c modules, which was reported
   by Dan[1]
 
 [1] https://lore.kernel.org/all/33e52277-1349-472b-a55b-ab5c3462bfcf@moroto.mountain/
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Merge tag 'exynos-drm-next-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes

Two fixups
- Fix a potential error pointer dereference by checking the return value
  of exynos_drm_crtc_get_by_type() function before accessing to crtc
  object.
- Fix a wrong error checking in exynos_drm_dma.c modules, which was reported
  by Dan[1]

[1] https://lore.kernel.org/all/33e52277-1349-472b-a55b-ab5c3462bfcf@moroto.mountain/

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231207042223.2473706-1-inki.dae@samsung.com
2023-12-08 13:55:32 +10:00
Dave Airlie
9f3e1c5919 amd-drm-fixes-6.7-2023-12-06:
amdgpu:
 - Disable MCBP on gfx9
 - DC vbios fix
 - eDP fix
 - dml2 UBSAN fix
 - SMU 14 fix
 - RAS fixes
 - dml KASAN/KCSAN fix
 - PSP 13 fix
 - Clockgating fixes
 - Suspend fix
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Merge tag 'amd-drm-fixes-6.7-2023-12-06' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-6.7-2023-12-06:

amdgpu:
- Disable MCBP on gfx9
- DC vbios fix
- eDP fix
- dml2 UBSAN fix
- SMU 14 fix
- RAS fixes
- dml KASAN/KCSAN fix
- PSP 13 fix
- Clockgating fixes
- Suspend fix

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231206221102.4995-1-alexander.deucher@amd.com
2023-12-08 13:15:25 +10:00
Dave Airlie
9ac4883d24 Merge tag 'drm-misc-fixes-2023-12-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes for v6.7-rc5:
- Document nouveau's GSP-RM.
- Flush vmm harder on nouveau tu102.
- Panfrost fix for imported dma-buf objects, and device frequency.
- Kconfig Build fix for tc358768.
- Call end_fb_access after atomic commit.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/05a26dc0-8cf1-4b1f-abb6-3bf471fbfc99@linux.intel.com
2023-12-08 12:16:11 +10:00
Linus Torvalds
5e3f5b81de Including fixes from bpf and netfilter.
Current release - regressions:
 
  - veth: fix packet segmentation in veth_convert_skb_to_xdp_buff
 
 Current release - new code bugs:
 
  - tcp: assorted fixes to the new Auth Option support
 
 Older releases - regressions:
 
  - tcp: fix mid stream window clamp
 
  - tls: fix incorrect splice handling
 
  - ipv4: ip_gre: handle skb_pull() failure in ipgre_xmit()
 
  - dsa: mv88e6xxx: restore USXGMII support for 6393X
 
  - arcnet: restore support for multiple Sohard Arcnet cards
 
 Older releases - always broken:
 
  - tcp: do not accept ACK of bytes we never sent
 
  - require admin privileges to receive packet traces via netlink
 
  - packet: move reference count in packet_sock to atomic_long_t
 
  - bpf:
    - fix incorrect branch offset comparison with cpu=v4
    - fix prog_array_map_poke_run map poke update
 
  - netfilter:
    - 3 fixes for crashes on bad admin commands
    - xt_owner: fix race accessing sk->sk_socket, TOCTOU null-deref
    - nf_tables: fix 'exist' matching on bigendian arches
 
  - leds: netdev: fix RTNL handling to prevent potential deadlock
 
  - eth: tg3: prevent races in error/reset handling
 
  - eth: r8169: fix rtl8125b PAUSE storm when suspended
 
  - eth: r8152: improve reset and surprise removal handling
 
  - eth: hns: fix race between changing features and sending
 
  - eth: nfp: fix sleep in atomic for bonding offload
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bpf and netfilter.

  Current release - regressions:

   - veth: fix packet segmentation in veth_convert_skb_to_xdp_buff

  Current release - new code bugs:

   - tcp: assorted fixes to the new Auth Option support

  Older releases - regressions:

   - tcp: fix mid stream window clamp

   - tls: fix incorrect splice handling

   - ipv4: ip_gre: handle skb_pull() failure in ipgre_xmit()

   - dsa: mv88e6xxx: restore USXGMII support for 6393X

   - arcnet: restore support for multiple Sohard Arcnet cards

  Older releases - always broken:

   - tcp: do not accept ACK of bytes we never sent

   - require admin privileges to receive packet traces via netlink

   - packet: move reference count in packet_sock to atomic_long_t

   - bpf:
      - fix incorrect branch offset comparison with cpu=v4
      - fix prog_array_map_poke_run map poke update

   - netfilter:
      - three fixes for crashes on bad admin commands
      - xt_owner: fix race accessing sk->sk_socket, TOCTOU null-deref
      - nf_tables: fix 'exist' matching on bigendian arches

   - leds: netdev: fix RTNL handling to prevent potential deadlock

   - eth: tg3: prevent races in error/reset handling

   - eth: r8169: fix rtl8125b PAUSE storm when suspended

   - eth: r8152: improve reset and surprise removal handling

   - eth: hns: fix race between changing features and sending

   - eth: nfp: fix sleep in atomic for bonding offload"

* tag 'net-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (62 commits)
  vsock/virtio: fix "comparison of distinct pointer types lacks a cast" warning
  net/smc: fix missing byte order conversion in CLC handshake
  net: dsa: microchip: provide a list of valid protocols for xmit handler
  drop_monitor: Require 'CAP_SYS_ADMIN' when joining "events" group
  psample: Require 'CAP_NET_ADMIN' when joining "packets" group
  bpf: sockmap, updating the sg structure should also update curr
  net: tls, update curr on splice as well
  nfp: flower: fix for take a mutex lock in soft irq context and rcu lock
  net: dsa: mv88e6xxx: Restore USXGMII support for 6393X
  tcp: do not accept ACK of bytes we never sent
  selftests/bpf: Add test for early update in prog_array_map_poke_run
  bpf: Fix prog_array_map_poke_run map poke update
  netfilter: xt_owner: Fix for unsafe access of sk->sk_socket
  netfilter: nf_tables: validate family when identifying table via handle
  netfilter: nf_tables: bail out on mismatching dynset and set expressions
  netfilter: nf_tables: fix 'exist' matching on bigendian arches
  netfilter: nft_set_pipapo: skip inactive elements during set walk
  netfilter: bpf: fix bad registration on nf_defrag
  leds: trigger: netdev: fix RTNL handling to prevent potential deadlock
  octeontx2-af: Update Tx link register range
  ...
2023-12-07 17:04:13 -08:00
Dave Airlie
abd0211880 Merge tag 'drm-intel-fixes-2023-12-07' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
drm/i915 fixes for v6.7-rc5:
- d21a3962d3 ("drm/i915: Call intel_pre_plane_updates() also for pipes
  getting enabled") in the previous fixes pull depends on a change that
  wasn't included. Pick it up.
- Relax BXT/GLK DSI transcoder hblank limits
- Fix DP MST .mode_valid_ctx() return values
- Reject DP MST modes that require bigjoiner (as it's not yet supported on DP MST)
- Fix _intel_dsb_commit() variable type to allow negative values

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87msum1hv8.fsf@intel.com
2023-12-08 11:00:59 +10:00