Commit Graph

1075555 Commits

Author SHA1 Message Date
Jisheng Zhang
6449520391 net: stmmac: properly handle with runtime pm in stmmac_dvr_remove()
There are two issues with runtime pm handling in stmmac_dvr_remove():

1. the mac is runtime suspended before stopping dma and rx/tx. We
need to ensure the device is properly resumed back.

2. the stmmaceth clk enable/disable isn't balanced in both exit and
error handling code path. Take the exit code path for example, when we
unbind the driver or rmmod the driver module, the mac is runtime
suspended as said above, so the stmmaceth clk is disabled, but
	stmmac_dvr_remove()
	  stmmac_remove_config_dt()
	    clk_disable_unprepare()
CCF will complain this time. The error handling code path suffers
from the similar situtaion.

Here are kernel warnings in error handling code path on Allwinner D1
platform:

[    1.604695] ------------[ cut here ]------------
[    1.609328] bus-emac already disabled
[    1.613015] WARNING: CPU: 0 PID: 38 at drivers/clk/clk.c:952 clk_core_disable+0xcc/0xec
[    1.621039] CPU: 0 PID: 38 Comm: kworker/u2:1 Not tainted 5.14.0-rc4#1
[    1.627653] Hardware name: Allwinner D1 NeZha (DT)
[    1.632443] Workqueue: events_unbound deferred_probe_work_func
[    1.638286] epc : clk_core_disable+0xcc/0xec
[    1.642561]  ra : clk_core_disable+0xcc/0xec
[    1.646835] epc : ffffffff8023c2ec ra : ffffffff8023c2ec sp : ffffffd00411bb10
[    1.654054]  gp : ffffffff80ec9988 tp : ffffffe00143a800 t0 : ffffffff80ed6a6f
[    1.661272]  t1 : ffffffff80ed6a60 t2 : 0000000000000000 s0 : ffffffe001509e00
[    1.668489]  s1 : 0000000000000001 a0 : 0000000000000019 a1 : ffffffff80e80bd8
[    1.675707]  a2 : 00000000ffffefff a3 : 00000000000000f4 a4 : 0000000000000002
[    1.682924]  a5 : 0000000000000001 a6 : 0000000000000030 a7 : 00000000028f5c29
[    1.690141]  s2 : 0000000000000800 s3 : ffffffe001375000 s4 : ffffffe01fdf7a80
[    1.697358]  s5 : ffffffe001375010 s6 : ffffffff8001fc10 s7 : ffffffffffffffff
[    1.704577]  s8 : 0000000000000001 s9 : ffffffff80ecb248 s10: ffffffe001b80000
[    1.711794]  s11: ffffffe001b80760 t3 : 0000000000000062 t4 : ffffffffffffffff
[    1.719012]  t5 : ffffffff80e0f6d8 t6 : ffffffd00411b8f0
[    1.724321] status: 8000000201800100 badaddr: 0000000000000000 cause: 0000000000000003
[    1.732233] [<ffffffff8023c2ec>] clk_core_disable+0xcc/0xec
[    1.737810] [<ffffffff80240430>] clk_disable+0x38/0x78
[    1.742956] [<ffffffff8001fc0c>] worker_thread+0x1a8/0x4d8
[    1.748451] [<ffffffff8031a500>] stmmac_remove_config_dt+0x1c/0x4c
[    1.754646] [<ffffffff8031c8ec>] sun8i_dwmac_probe+0x378/0x82c
[    1.760484] [<ffffffff8001fc0c>] worker_thread+0x1a8/0x4d8
[    1.765975] [<ffffffff8029a6c8>] platform_probe+0x64/0xf0
[    1.771382] [<ffffffff8029833c>] really_probe.part.0+0x8c/0x30c
[    1.777305] [<ffffffff8029865c>] __driver_probe_device+0xa0/0x148
[    1.783402] [<ffffffff8029873c>] driver_probe_device+0x38/0x138
[    1.789324] [<ffffffff802989cc>] __device_attach_driver+0xd0/0x170
[    1.795508] [<ffffffff802988f8>] __driver_attach_async_helper+0xbc/0xc0
[    1.802125] [<ffffffff802965ac>] bus_for_each_drv+0x68/0xb4
[    1.807701] [<ffffffff80298d1c>] __device_attach+0xd8/0x184
[    1.813277] [<ffffffff802967b0>] bus_probe_device+0x98/0xbc
[    1.818852] [<ffffffff80297904>] deferred_probe_work_func+0x90/0xd4
[    1.825122] [<ffffffff8001f8b8>] process_one_work+0x1e4/0x390
[    1.830872] [<ffffffff8001fd80>] worker_thread+0x31c/0x4d8
[    1.836362] [<ffffffff80026bf4>] kthreadd+0x94/0x188
[    1.841335] [<ffffffff80026bf4>] kthreadd+0x94/0x188
[    1.846304] [<ffffffff8001fa60>] process_one_work+0x38c/0x390
[    1.852054] [<ffffffff80026564>] kthread+0x124/0x160
[    1.857021] [<ffffffff8002643c>] set_kthread_struct+0x5c/0x60
[    1.862770] [<ffffffff80001f08>] ret_from_syscall_rejected+0x8/0xc
[    1.868956] ---[ end trace 8d5c6046255f84a0 ]---
[    1.873675] ------------[ cut here ]------------
[    1.878366] bus-emac already unprepared
[    1.882378] WARNING: CPU: 0 PID: 38 at drivers/clk/clk.c:810 clk_core_unprepare+0xe4/0x168
[    1.890673] CPU: 0 PID: 38 Comm: kworker/u2:1 Tainted: G        W	5.14.0-rc4 #1
[    1.898674] Hardware name: Allwinner D1 NeZha (DT)
[    1.903464] Workqueue: events_unbound deferred_probe_work_func
[    1.909305] epc : clk_core_unprepare+0xe4/0x168
[    1.913840]  ra : clk_core_unprepare+0xe4/0x168
[    1.918375] epc : ffffffff8023d6cc ra : ffffffff8023d6cc sp : ffffffd00411bb10
[    1.925593]  gp : ffffffff80ec9988 tp : ffffffe00143a800 t0 : 0000000000000002
[    1.932811]  t1 : ffffffe01f743be0 t2 : 0000000000000040 s0 : ffffffe001509e00
[    1.940029]  s1 : 0000000000000001 a0 : 000000000000001b a1 : ffffffe00143a800
[    1.947246]  a2 : 0000000000000000 a3 : 00000000000000f4 a4 : 0000000000000001
[    1.954463]  a5 : 0000000000000000 a6 : 0000000005fce2a5 a7 : 0000000000000001
[    1.961680]  s2 : 0000000000000800 s3 : ffffffff80afeb90 s4 : ffffffe01fdf7a80
[    1.968898]  s5 : ffffffe001375010 s6 : ffffffff8001fc10 s7 : ffffffffffffffff
[    1.976115]  s8 : 0000000000000001 s9 : ffffffff80ecb248 s10: ffffffe001b80000
[    1.983333]  s11: ffffffe001b80760 t3 : ffffffff80b39120 t4 : 0000000000000001
[    1.990550]  t5 : 0000000000000000 t6 : ffffffe001600002
[    1.995859] status: 8000000201800120 badaddr: 0000000000000000 cause: 0000000000000003
[    2.003771] [<ffffffff8023d6cc>] clk_core_unprepare+0xe4/0x168
[    2.009609] [<ffffffff802403a0>] clk_unprepare+0x24/0x3c
[    2.014929] [<ffffffff8031a508>] stmmac_remove_config_dt+0x24/0x4c
[    2.021125] [<ffffffff8031c8ec>] sun8i_dwmac_probe+0x378/0x82c
[    2.026965] [<ffffffff8001fc0c>] worker_thread+0x1a8/0x4d8
[    2.032463] [<ffffffff8029a6c8>] platform_probe+0x64/0xf0
[    2.037871] [<ffffffff8029833c>] really_probe.part.0+0x8c/0x30c
[    2.043795] [<ffffffff8029865c>] __driver_probe_device+0xa0/0x148
[    2.049892] [<ffffffff8029873c>] driver_probe_device+0x38/0x138
[    2.055815] [<ffffffff802989cc>] __device_attach_driver+0xd0/0x170
[    2.061999] [<ffffffff802988f8>] __driver_attach_async_helper+0xbc/0xc0
[    2.068616] [<ffffffff802965ac>] bus_for_each_drv+0x68/0xb4
[    2.074193] [<ffffffff80298d1c>] __device_attach+0xd8/0x184
[    2.079769] [<ffffffff802967b0>] bus_probe_device+0x98/0xbc
[    2.085345] [<ffffffff80297904>] deferred_probe_work_func+0x90/0xd4
[    2.091616] [<ffffffff8001f8b8>] process_one_work+0x1e4/0x390
[    2.097367] [<ffffffff8001fd80>] worker_thread+0x31c/0x4d8
[    2.102858] [<ffffffff80026bf4>] kthreadd+0x94/0x188
[    2.107830] [<ffffffff80026bf4>] kthreadd+0x94/0x188
[    2.112800] [<ffffffff8001fa60>] process_one_work+0x38c/0x390
[    2.118551] [<ffffffff80026564>] kthread+0x124/0x160
[    2.123520] [<ffffffff8002643c>] set_kthread_struct+0x5c/0x60
[    2.129268] [<ffffffff80001f08>] ret_from_syscall_rejected+0x8/0xc
[    2.135455] ---[ end trace 8d5c6046255f84a1 ]---

Fixes: 5ec5582343 ("net: stmmac: add clocks management for gmac driver")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-28 15:13:22 +00:00
Mike Marciniszyn
e5cce44aff IB/hfi1: Fix tstats alloc and dealloc
The tstats allocation is done in the accelerated ndo_init function but the
allocation is not tested to succeed.

The deallocation is not done in the accelerated ndo_uninit function.

Resolve issues by testing for an allocation failure and adding the
free_percpu in the uninit function.

Fixes: aa0616a9bd ("IB/hfi1: switch to core handling of rx/tx byte/packet counters")
Link: https://lore.kernel.org/r/1642287756-182313-5-git-send-email-mike.marciniszyn@cornelisnetworks.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-01-28 11:12:15 -04:00
Mike Marciniszyn
5f8f55b92e IB/hfi1: Fix AIP early init panic
An early failure in hfi1_ipoib_setup_rn() can lead to the following panic:

  BUG: unable to handle kernel NULL pointer dereference at 00000000000001b0
  PGD 0 P4D 0
  Oops: 0002 [#1] SMP NOPTI
  Workqueue: events work_for_cpu_fn
  RIP: 0010:try_to_grab_pending+0x2b/0x140
  Code: 1f 44 00 00 41 55 41 54 55 48 89 d5 53 48 89 fb 9c 58 0f 1f 44 00 00 48 89 c2 fa 66 0f 1f 44 00 00 48 89 55 00 40 84 f6 75 77 <f0> 48 0f ba 2b 00 72 09 31 c0 5b 5d 41 5c 41 5d c3 48 89 df e8 6c
  RSP: 0018:ffffb6b3cf7cfa48 EFLAGS: 00010046
  RAX: 0000000000000246 RBX: 00000000000001b0 RCX: 0000000000000000
  RDX: 0000000000000246 RSI: 0000000000000000 RDI: 00000000000001b0
  RBP: ffffb6b3cf7cfa70 R08: 0000000000000f09 R09: 0000000000000001
  R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
  R13: ffffb6b3cf7cfa90 R14: ffffffff9b2fbfc0 R15: ffff8a4fdf244690
  FS:  0000000000000000(0000) GS:ffff8a527f400000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00000000000001b0 CR3: 00000017e2410003 CR4: 00000000007706f0
  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  PKRU: 55555554
  Call Trace:
   __cancel_work_timer+0x42/0x190
   ? dev_printk_emit+0x4e/0x70
   iowait_cancel_work+0x15/0x30 [hfi1]
   hfi1_ipoib_txreq_deinit+0x5a/0x220 [hfi1]
   ? dev_err+0x6c/0x90
   hfi1_ipoib_netdev_dtor+0x15/0x30 [hfi1]
   hfi1_ipoib_setup_rn+0x10e/0x150 [hfi1]
   rdma_init_netdev+0x5a/0x80 [ib_core]
   ? hfi1_ipoib_free_rdma_netdev+0x20/0x20 [hfi1]
   ipoib_intf_init+0x6c/0x350 [ib_ipoib]
   ipoib_intf_alloc+0x5c/0xc0 [ib_ipoib]
   ipoib_add_one+0xbe/0x300 [ib_ipoib]
   add_client_context+0x12c/0x1a0 [ib_core]
   enable_device_and_get+0xdc/0x1d0 [ib_core]
   ib_register_device+0x572/0x6b0 [ib_core]
   rvt_register_device+0x11b/0x220 [rdmavt]
   hfi1_register_ib_device+0x6b4/0x770 [hfi1]
   do_init_one.isra.20+0x3e3/0x680 [hfi1]
   local_pci_probe+0x41/0x90
   work_for_cpu_fn+0x16/0x20
   process_one_work+0x1a7/0x360
   ? create_worker+0x1a0/0x1a0
   worker_thread+0x1cf/0x390
   ? create_worker+0x1a0/0x1a0
   kthread+0x116/0x130
   ? kthread_flush_work_fn+0x10/0x10
   ret_from_fork+0x1f/0x40

The panic happens in hfi1_ipoib_txreq_deinit() because there is a NULL
deref when hfi1_ipoib_netdev_dtor() is called in this error case.

hfi1_ipoib_txreq_init() and hfi1_ipoib_rxq_init() are self unwinding so
fix by adjusting the error paths accordingly.

Other changes:
- hfi1_ipoib_free_rdma_netdev() is deleted including the free_netdev()
  since the netdev core code deletes calls free_netdev()
- The switch to the accelerated entrances is moved to the success path.

Cc: stable@vger.kernel.org
Fixes: d99dc602e2 ("IB/hfi1: Add functions to transmit datagram ipoib packets")
Link: https://lore.kernel.org/r/1642287756-182313-4-git-send-email-mike.marciniszyn@cornelisnetworks.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-01-28 11:12:15 -04:00
Mike Marciniszyn
b1151b74ff IB/hfi1: Fix alloc failure with larger txqueuelen
The following allocation with large txqueuelen will result in the
following warning:

  Call Trace:
   __alloc_pages_nodemask+0x283/0x2c0
   kmalloc_large_node+0x3c/0xa0
   __kmalloc_node+0x22a/0x2f0
   hfi1_ipoib_txreq_init+0x19f/0x330 [hfi1]
   hfi1_ipoib_setup_rn+0xd3/0x1a0 [hfi1]
   rdma_init_netdev+0x5a/0x80 [ib_core]
   ipoib_intf_init+0x6c/0x350 [ib_ipoib]
   ipoib_intf_alloc+0x5c/0xc0 [ib_ipoib]
   ipoib_add_one+0xbe/0x300 [ib_ipoib]
   add_client_context+0x12c/0x1a0 [ib_core]
   ib_register_client+0x147/0x190 [ib_core]
   ipoib_init_module+0xdd/0x132 [ib_ipoib]
   do_one_initcall+0x46/0x1c3
   do_init_module+0x5a/0x220
   load_module+0x14c5/0x17f0
   __do_sys_init_module+0x13b/0x180
   do_syscall_64+0x5b/0x1a0
   entry_SYSCALL_64_after_hwframe+0x65/0xca

For ipoib, the txqueuelen is modified with the module parameter
send_queue_size.

Fix by changing to use kv versions of the same allocator to handle the
large allocations.  The allocation embeds a hdr struct that is dma mapped.
Change that struct to a pointer to a kzalloced struct.

Cc: stable@vger.kernel.org
Fixes: d99dc602e2 ("IB/hfi1: Add functions to transmit datagram ipoib packets")
Link: https://lore.kernel.org/r/1642287756-182313-3-git-send-email-mike.marciniszyn@cornelisnetworks.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-01-28 11:12:15 -04:00
David S. Miller
010a2a6623 Merge tag 'ieee802154-for-net-2022-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan
Stefan Schmidt says:

====================
pull-request: ieee802154 for net 2022-01-28

An update from ieee802154 for your *net* tree.

A bunch of fixes in drivers, all from Miquel Raynal.
Clarifying the default channel in hwsim, leak fixes in at86rf230 and ca8210 as
well as a symbol duration fix for mcr20a. Topping up the driver fixes with
better error codes in nl802154 and a cleanup in MAINTAINERS for an orphaned
driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-28 15:10:45 +00:00
Haiyue Wang
1f84a9450d gve: fix the wrong AdminQ buffer queue index check
The 'tail' and 'head' are 'unsigned int' type free-running count, when
'head' is overflow, the 'int i (= tail) < u32 head' will be false:

Only '- loop 0: idx = 63' result is shown, so it needs to use 'int' type
to compare, it can handle the overflow correctly.

typedef uint32_t u32;

int main()
{
        u32 tail, head;
        int stail, shead;
        int i, loop;

        tail = 0xffffffff;
        head = 0x00000000;

        for (i = tail, loop = 0; i < head; i++) {
                unsigned int idx = i & 63;

                printf("+ loop %d: idx = %u\n", loop++, idx);
        }

        stail = tail;
        shead = head;
        for (i = stail, loop = 0; i < shead; i++) {
                unsigned int idx = i & 63;

                printf("- loop %d: idx = %u\n", loop++, idx);
        }

        return 0;
}

Fixes: 5cdad90de6 ("gve: Batch AQ commands for creating and destroying queues.")
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-28 15:07:56 +00:00
Mike Marciniszyn
8c83d39cc7 IB/hfi1: Fix panic with larger ipoib send_queue_size
When the ipoib send_queue_size is increased from the default the following
panic happens:

  RIP: 0010:hfi1_ipoib_drain_tx_ring+0x45/0xf0 [hfi1]
  Code: 31 e4 eb 0f 8b 85 c8 02 00 00 41 83 c4 01 44 39 e0 76 60 8b 8d cc 02 00 00 44 89 e3 be 01 00 00 00 d3 e3 48 03 9d c0 02 00 00 <c7> 83 18 01 00 00 00 00 00 00 48 8b bb 30 01 00 00 e8 25 af a7 e0
  RSP: 0018:ffffc9000798f4a0 EFLAGS: 00010286
  RAX: 0000000000008000 RBX: ffffc9000aa0f000 RCX: 000000000000000f
  RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
  RBP: ffff88810ff08000 R08: ffff88889476d900 R09: 0000000000000101
  R10: 0000000000000000 R11: ffffc90006590ff8 R12: 0000000000000200
  R13: ffffc9000798fba8 R14: 0000000000000000 R15: 0000000000000001
  FS:  00007fd0f79cc3c0(0000) GS:ffff88885fb00000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: ffffc9000aa0f118 CR3: 0000000889c84001 CR4: 00000000001706e0
  Call Trace:
   <TASK>
   hfi1_ipoib_napi_tx_disable+0x45/0x60 [hfi1]
   hfi1_ipoib_dev_stop+0x18/0x80 [hfi1]
   ipoib_ib_dev_stop+0x1d/0x40 [ib_ipoib]
   ipoib_stop+0x48/0xc0 [ib_ipoib]
   __dev_close_many+0x9e/0x110
   __dev_change_flags+0xd9/0x210
   dev_change_flags+0x21/0x60
   do_setlink+0x31c/0x10f0
   ? __nla_validate_parse+0x12d/0x1a0
   ? __nla_parse+0x21/0x30
   ? inet6_validate_link_af+0x5e/0xf0
   ? cpumask_next+0x1f/0x20
   ? __snmp6_fill_stats64.isra.53+0xbb/0x140
   ? __nla_validate_parse+0x47/0x1a0
   __rtnl_newlink+0x530/0x910
   ? pskb_expand_head+0x73/0x300
   ? __kmalloc_node_track_caller+0x109/0x280
   ? __nla_put+0xc/0x20
   ? cpumask_next_and+0x20/0x30
   ? update_sd_lb_stats.constprop.144+0xd3/0x820
   ? _raw_spin_unlock_irqrestore+0x25/0x37
   ? __wake_up_common_lock+0x87/0xc0
   ? kmem_cache_alloc_trace+0x3d/0x3d0
   rtnl_newlink+0x43/0x60

The issue happens when the shift that should have been a function of the
txq item size mistakenly used the ring size.

Fix by using the item size.

Cc: stable@vger.kernel.org
Fixes: d47dfc2b00 ("IB/hfi1: Remove cache and embed txreq in ring")
Link: https://lore.kernel.org/r/1642287756-182313-2-git-send-email-mike.marciniszyn@cornelisnetworks.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-01-28 11:03:50 -04:00
David S. Miller
501c8f5e39 Merge branch 'ax25-fixes'
Duoming Zhou says:

====================
ax25: fix NPD and UAF bugs when detaching ax25 device

There are NPD and UAF bugs when detaching ax25 device, we
use lock and refcount to mitigate these bugs.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-28 14:56:47 +00:00
Duoming Zhou
d01ffb9eee ax25: add refcount in ax25_dev to avoid UAF bugs
If we dereference ax25_dev after we call kfree(ax25_dev) in
ax25_dev_device_down(), it will lead to concurrency UAF bugs.
There are eight syscall functions suffer from UAF bugs, include
ax25_bind(), ax25_release(), ax25_connect(), ax25_ioctl(),
ax25_getname(), ax25_sendmsg(), ax25_getsockopt() and
ax25_info_show().

One of the concurrency UAF can be shown as below:

  (USE)                       |    (FREE)
                              |  ax25_device_event
                              |    ax25_dev_device_down
ax25_bind                     |    ...
  ...                         |      kfree(ax25_dev)
  ax25_fillin_cb()            |    ...
    ax25_fillin_cb_from_dev() |
  ...                         |

The root cause of UAF bugs is that kfree(ax25_dev) in
ax25_dev_device_down() is not protected by any locks.
When ax25_dev, which there are still pointers point to,
is released, the concurrency UAF bug will happen.

This patch introduces refcount into ax25_dev in order to
guarantee that there are no pointers point to it when ax25_dev
is released.

Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-28 14:56:47 +00:00
Duoming Zhou
4e0f718daf ax25: improve the incomplete fix to avoid UAF and NPD bugs
The previous commit 1ade48d0c2 ("ax25: NPD bug when detaching
AX25 device") introduce lock_sock() into ax25_kill_by_device to
prevent NPD bug. But the concurrency NPD or UAF bug will occur,
when lock_sock() or release_sock() dereferences the ax25_cb->sock.

The NULL pointer dereference bug can be shown as below:

ax25_kill_by_device()        | ax25_release()
                             |   ax25_destroy_socket()
                             |     ax25_cb_del()
  ...                        |     ...
                             |     ax25->sk=NULL;
  lock_sock(s->sk); //(1)    |
  s->ax25_dev = NULL;        |     ...
  release_sock(s->sk); //(2) |
  ...                        |

The root cause is that the sock is set to null before dereference
site (1) or (2). Therefore, this patch extracts the ax25_cb->sock
in advance, and uses ax25_list_lock to protect it, which can synchronize
with ax25_cb_del() and ensure the value of sock is not null before
dereference sites.

The concurrency UAF bug can be shown as below:

ax25_kill_by_device()        | ax25_release()
                             |   ax25_destroy_socket()
  ...                        |   ...
                             |   sock_put(sk); //FREE
  lock_sock(s->sk); //(1)    |
  s->ax25_dev = NULL;        |   ...
  release_sock(s->sk); //(2) |
  ...                        |

The root cause is that the sock is released before dereference
site (1) or (2). Therefore, this patch uses sock_hold() to increase
the refcount of sock and uses ax25_list_lock to protect it, which
can synchronize with ax25_cb_del() in ax25_destroy_socket() and
ensure the sock wil not be released before dereference sites.

Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-28 14:56:47 +00:00
Gerhard Engleder
500c77eed0 pinctrl: zynqmp: Revert "Unify pin naming"
This reverts commit 54784ff249.

This patch changes the pin names from "MIO%d" to "MIO-%d", but all dts
in arch/arm64/boot/dts/xilinx still use the old name. As a result my
ZCU104 has no output on serial terminal and is not reachable over
network.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-01-28 16:52:04 +02:00
Yuji Ishikawa
928d6fe996 net: stmmac: dwmac-visconti: No change to ETHER_CLOCK_SEL for unexpected speed request.
Variable clk_sel_val is not initialized in the default case of the first switch statement.
In that case, the function should return immediately without any changes to the hardware.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: b38dd98ff8 ("net: stmmac: Add Toshiba Visconti SoCs glue driver")
Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp>
Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-28 14:28:30 +00:00
Phil Elwell
665408f4c3 brcmfmac: firmware: Fix crash in brcm_alt_fw_path
The call to brcm_alt_fw_path in brcmf_fw_get_firmwares is not protected
by a check to the validity of the fwctx->req->board_type pointer. This
results in a crash in strlcat when, for example, the WLAN chip is found
in a USB dongle.

Prevent the crash by adding the necessary check.

See: https://github.com/raspberrypi/linux/issues/4833

Fixes: 5ff013914c ("brcmfmac: firmware: Allow per-board firmware binaries")
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220118154514.3245524-1-phil@raspberrypi.com
2022-01-28 16:06:04 +02:00
Dai Ngo
ab451ea952 nfsd: nfsd4_setclientid_confirm mistakenly expires confirmed client.
From RFC 7530 Section 16.34.5:

o  The server has not recorded an unconfirmed { v, x, c, *, * } and
   has recorded a confirmed { v, x, c, *, s }.  If the principals of
   the record and of SETCLIENTID_CONFIRM do not match, the server
   returns NFS4ERR_CLID_INUSE without removing any relevant leased
   client state, and without changing recorded callback and
   callback_ident values for client { x }.

The current code intends to do what the spec describes above but
it forgot to set 'old' to NULL resulting to the confirmed client
to be expired.

Fixes: 2b63482185 ("nfsd: fix clid_inuse on mount with security change")
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Bruce Fields <bfields@fieldses.org>
2022-01-28 09:04:00 -05:00
Rob Herring
60b1e97140
spi: dt-bindings: Fix 'reg' child node schema
The schema for SPI child nodes' 'reg' property is not complete. 'reg' is
a matrix of cells. The schema needs to define both the number of 'reg'
entries and constraints on each entry.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220126231326.1636199-1-robh@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-28 13:05:21 +00:00
Kamal Dasu
2cbd27267f
spi: bcm-qspi: check for valid cs before applying chip select
Apply only valid chip select value. This change fixes case where chip
select is set to initial value of '-1' during probe and  PM supend and
subsequent resume can try to use the value with undefined behaviour.
Also in case where gpio based chip select, the check in
bcm_qspi_chip_select() shall prevent undefined behaviour on resume.

Fixes: fa236a7ef2 ("spi: bcm-qspi: Add Broadcom MSPI driver")
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220127185359.27322-1-kdasu.kdev@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-28 13:05:20 +00:00
Miaoqian Lin
fb25621da5
ASoC: fsl: Add missing error handling in pcm030_fabric_probe
Add the missing platform_device_put() and platform_device_del()
before return from pcm030_fabric_probe in the error handling case.

Fixes: c912fa9134 ("ASoC: fsl: register the wm9712-codec")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220127131336.30214-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-28 13:05:18 +00:00
Paolo Bonzini
17179d0068 KVM/arm64 fixes for 5.17, take #1
- Correctly update the shadow register on exception injection when
   running in nVHE mode
 
 - Correctly use the mm_ops indirection when performing cache invalidation
   from the page-table walker
 
 - Restrict the vgic-v3 workaround for SEIS to the two known broken
   implementations
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Merge tag 'kvmarm-fixes-5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 5.17, take #1

- Correctly update the shadow register on exception injection when
  running in nVHE mode

- Correctly use the mm_ops indirection when performing cache invalidation
  from the page-table walker

- Restrict the vgic-v3 workaround for SEIS to the two known broken
  implementations
2022-01-28 07:45:15 -05:00
Hou Wenlong
6a0c61703e KVM: eventfd: Fix false positive RCU usage warning
Fix the following false positive warning:
 =============================
 WARNING: suspicious RCU usage
 5.16.0-rc4+ #57 Not tainted
 -----------------------------
 arch/x86/kvm/../../../virt/kvm/eventfd.c:484 RCU-list traversed in non-reader section!!

 other info that might help us debug this:

 rcu_scheduler_active = 2, debug_locks = 1
 3 locks held by fc_vcpu 0/330:
  #0: ffff8884835fc0b0 (&vcpu->mutex){+.+.}-{3:3}, at: kvm_vcpu_ioctl+0x88/0x6f0 [kvm]
  #1: ffffc90004c0bb68 (&kvm->srcu){....}-{0:0}, at: vcpu_enter_guest+0x600/0x1860 [kvm]
  #2: ffffc90004c0c1d0 (&kvm->irq_srcu){....}-{0:0}, at: kvm_notify_acked_irq+0x36/0x180 [kvm]

 stack backtrace:
 CPU: 26 PID: 330 Comm: fc_vcpu 0 Not tainted 5.16.0-rc4+
 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
 Call Trace:
  <TASK>
  dump_stack_lvl+0x44/0x57
  kvm_notify_acked_gsi+0x6b/0x70 [kvm]
  kvm_notify_acked_irq+0x8d/0x180 [kvm]
  kvm_ioapic_update_eoi+0x92/0x240 [kvm]
  kvm_apic_set_eoi_accelerated+0x2a/0xe0 [kvm]
  handle_apic_eoi_induced+0x3d/0x60 [kvm_intel]
  vmx_handle_exit+0x19c/0x6a0 [kvm_intel]
  vcpu_enter_guest+0x66e/0x1860 [kvm]
  kvm_arch_vcpu_ioctl_run+0x438/0x7f0 [kvm]
  kvm_vcpu_ioctl+0x38a/0x6f0 [kvm]
  __x64_sys_ioctl+0x89/0xc0
  do_syscall_64+0x3a/0x90
  entry_SYSCALL_64_after_hwframe+0x44/0xae

Since kvm_unregister_irq_ack_notifier() does synchronize_srcu(&kvm->irq_srcu),
kvm->irq_ack_notifier_list is protected by kvm->irq_srcu. In fact,
kvm->irq_srcu SRCU read lock is held in kvm_notify_acked_irq(), making it
a false positive warning. So use hlist_for_each_entry_srcu() instead of
hlist_for_each_entry_rcu().

Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Hou Wenlong <houwenlong93@linux.alibaba.com>
Message-Id: <f98bac4f5052bad2c26df9ad50f7019e40434512.1643265976.git.houwenlong.hwl@antgroup.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:38:27 -05:00
Vitaly Kuznetsov
6cbbaab60f KVM: nVMX: Allow VMREAD when Enlightened VMCS is in use
Hyper-V TLFS explicitly forbids VMREAD and VMWRITE instructions when
Enlightened VMCS interface is in use:

"Any VMREAD or VMWRITE instructions while an enlightened VMCS is
active is unsupported and can result in unexpected behavior.""

Windows 11 + WSL2 seems to ignore this, attempts to VMREAD VMCS field
0x4404 ("VM-exit interruption information") are observed. Failing
these attempts with nested_vmx_failInvalid() makes such guests
unbootable.

Microsoft confirms this is a Hyper-V bug and claims that it'll get fixed
eventually but for the time being we need a workaround. (Temporary) allow
VMREAD to get data from the currently loaded Enlightened VMCS.

Note: VMWRITE instructions remain forbidden, it is not clear how to
handle them properly and hopefully won't ever be needed.

Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-6-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:38:26 -05:00
Vitaly Kuznetsov
892a42c10d KVM: nVMX: Implement evmcs_field_offset() suitable for handle_vmread()
In preparation to allowing reads from Enlightened VMCS from
handle_vmread(), implement evmcs_field_offset() to get the correct
read offset. get_evmcs_offset(), which is being used by KVM-on-Hyper-V,
is almost what's needed but a few things need to be adjusted. First,
WARN_ON() is unacceptable for handle_vmread() as any field can (in
theory) be supplied by the guest and not all fields are defined in
eVMCS v1. Second, we need to handle 'holes' in eVMCS (missing fields).
It also sounds like a good idea to WARN_ON() if such fields are ever
accessed by KVM-on-Hyper-V.

Implement dedicated evmcs_field_offset() helper.

No functional change intended.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-5-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:38:26 -05:00
Vitaly Kuznetsov
2423a4c0d1 KVM: nVMX: Rename vmcs_to_field_offset{,_table}
vmcs_to_field_offset{,_table} may sound misleading as VMCS is an opaque
blob which is not supposed to be accessed directly. In fact,
vmcs_to_field_offset{,_table} are related to KVM defined VMCS12 structure.

Rename vmcs_field_to_offset() to get_vmcs12_field_offset() for clarity.

No functional change intended.

Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-4-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:38:26 -05:00
Vitaly Kuznetsov
7a601e2cf6 KVM: nVMX: eVMCS: Filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER
Enlightened VMCS v1 doesn't have VMX_PREEMPTION_TIMER_VALUE field,
PIN_BASED_VMX_PREEMPTION_TIMER is also filtered out already so it makes
sense to filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER too.

Note, none of the currently existing Windows/Hyper-V versions are known
to enable 'save VMX-preemption timer value' when eVMCS is in use, the
change is aimed at making the filtering future proof.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:38:25 -05:00
Vitaly Kuznetsov
f80ae0ef08 KVM: nVMX: Also filter MSR_IA32_VMX_TRUE_PINBASED_CTLS when eVMCS
Similar to MSR_IA32_VMX_EXIT_CTLS/MSR_IA32_VMX_TRUE_EXIT_CTLS,
MSR_IA32_VMX_ENTRY_CTLS/MSR_IA32_VMX_TRUE_ENTRY_CTLS pair,
MSR_IA32_VMX_TRUE_PINBASED_CTLS needs to be filtered the same way
MSR_IA32_VMX_PINBASED_CTLS is currently filtered as guests may solely rely
on 'true' MSR data.

Note, none of the currently existing Windows/Hyper-V versions are known
to stumble upon the unfiltered MSR_IA32_VMX_TRUE_PINBASED_CTLS, the change
is aimed at making the filtering future proof.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:38:25 -05:00
Paolo Bonzini
b19c99b9f4 selftests: kvm: check dynamic bits against KVM_X86_XCOMP_GUEST_SUPP
Provide coverage for the new API.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:38:25 -05:00
Paolo Bonzini
dd6e631220 KVM: x86: add system attribute to retrieve full set of supported xsave states
Because KVM_GET_SUPPORTED_CPUID is meant to be passed (by simple-minded
VMMs) to KVM_SET_CPUID2, it cannot include any dynamic xsave states that
have not been enabled.  Probing those, for example so that they can be
passed to ARCH_REQ_XCOMP_GUEST_PERM, requires a new ioctl or arch_prctl.
The latter is in fact worse, even though that is what the rest of the
API uses, because it would require supported_xcr0 to be moved from the
KVM module to the kernel just for this use.  In addition, the value
would be nonsensical (or an error would have to be returned) until
the KVM module is loaded in.

Therefore, to limit the growth of system ioctls, add a /dev/kvm
variant of KVM_{GET,HAS}_DEVICE_ATTR, and implement it in x86
with just one group (0) and attribute (KVM_X86_XCOMP_GUEST_SUPP).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:33:32 -05:00
Sean Christopherson
56f289a8d2 KVM: x86: Add a helper to retrieve userspace address from kvm_device_attr
Add a helper to handle converting the u64 userspace address embedded in
struct kvm_device_attr into a userspace pointer, it's all too easy to
forget the intermediate "unsigned long" cast as well as the truncation
check.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-28 07:32:00 -05:00
Roger Pau Monne
c8980fcb21 xen/x2apic: enable x2apic mode when supported for HVM
There's no point in disabling x2APIC mode when running as a Xen HVM
guest, just enable it when available.

Remove some unneeded wrapping around the detection functions, and
simply provide a xen_x2apic_available helper that's a wrapper around
x2apic_supported.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20220121090146.13697-1-roger.pau@citrix.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2022-01-28 13:26:13 +01:00
Mark Brown
9ae279ecab kselftest/arm64: Correct logging of FPSIMD register read via ptrace
There's a cut'n'paste error in the logging for our test for reading register
state back via ptrace, correctly say that we did a read instead of a write.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220124175527.3260234-3-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-01-28 11:30:51 +00:00
Mark Brown
50806fd914 kselftest/arm64: Skip VL_INHERIT tests for unsupported vector types
Currently we unconditionally test the ability to set the vector length
inheritance flag via ptrace meaning that we generate false failures on
systems that don't support SVE when we attempt to set the vector length
there. Check the hwcap and mark the tests as skipped when it's not present.

Fixes: 0ba1ce1e86 ("selftests: arm64: Add coverage of ptrace flags for SVE VL inheritance")
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220124175527.3260234-2-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-01-28 11:28:49 +00:00
Maarten Lankhorst
a594525c82 drm/i915: Allow dead vm to unbind vma's without lock.
i915_gem_vm_close may take the lock, and we currently have no better way
of handling this. At least for now, allow a path in which holding vm->mutex
is sufficient. This is the case, because the object destroy path will
forcefully take vm->mutex now.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128085739.1464568-1-maarten.lankhorst@linux.intel.com
Reviewed-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
2022-01-28 12:17:51 +01:00
Linus Torvalds
145d9b498f ATA fixes for 5.17.0-rc2
A single fix for 5.17-rc2, adding a missing resource allocation error
 check in the pata_platform driver, from Zhou.
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Merge tag 'ata-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ATA fix from Damien Le Moal:
 "A single fix for 5.17-rc2, adding a missing resource allocation error
  check in the pata_platform driver, from Zhou"

* tag 'ata-5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: pata_platform: Fix a NULL pointer dereference in __pata_platform_probe()
2022-01-28 11:47:05 +02:00
John David Anglin
d7da660cab parisc: Fix sglist access in ccio-dma.c
This patch implements the same bug fix to ccio-dma.c as to sba_iommu.c.
It ensures that only the allocated entries of the sglist are accessed.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
2022-01-28 10:15:34 +01:00
John David Anglin
b7d6f44a0f parisc: Fix data TLB miss in sba_unmap_sg
Rolf Eike Beer reported the following bug:

[1274934.746891] Bad Address (null pointer deref?): Code=15 (Data TLB miss fault) at addr 0000004140000018
[1274934.746891] CPU: 3 PID: 5549 Comm: cmake Not tainted 5.15.4-gentoo-parisc64 #4
[1274934.746891] Hardware name: 9000/785/C8000
[1274934.746891]
[1274934.746891]      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
[1274934.746891] PSW: 00001000000001001111111000001110 Not tainted
[1274934.746891] r00-03  000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000
[1274934.746891] r04-07  0000000040b693c0 0000004140000000 000000004a2b08b0 0000000000000001
[1274934.746891] r08-11  0000000041f98810 0000000000000000 000000004a0a7000 0000000000000001
[1274934.746891] r12-15  0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0
[1274934.746891] r16-19  0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007
[1274934.746891] r20-23  0000000000000006 000000004a368950 0000000000000000 0000000000000001
[1274934.746891] r24-27  0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0
[1274934.746891] r28-31  0000000000000001 0000000041f988b0 0000000041f98840 000000004a171118
[1274934.746891] sr00-03  00000000066e5800 0000000000000000 0000000000000000 00000000066e5800
[1274934.746891] sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000
[1274934.746891]
[1274934.746891] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000406760e8 00000000406760ec
[1274934.746891]  IIR: 48780030    ISR: 0000000000000000  IOR: 0000004140000018
[1274934.746891]  CPU:        3   CR30: 00000040e3a9c000 CR31: ffffffffffffffff
[1274934.746891]  ORIG_R28: 0000000040acdd58
[1274934.746891]  IAOQ[0]: sba_unmap_sg+0xb0/0x118
[1274934.746891]  IAOQ[1]: sba_unmap_sg+0xb4/0x118
[1274934.746891]  RP(r2): sba_unmap_sg+0xac/0x118
[1274934.746891] Backtrace:
[1274934.746891]  [<00000000402740cc>] dma_unmap_sg_attrs+0x6c/0x70
[1274934.746891]  [<000000004074d6bc>] scsi_dma_unmap+0x54/0x60
[1274934.746891]  [<00000000407a3488>] mptscsih_io_done+0x150/0xd70
[1274934.746891]  [<0000000040798600>] mpt_interrupt+0x168/0xa68
[1274934.746891]  [<0000000040255a48>] __handle_irq_event_percpu+0xc8/0x278
[1274934.746891]  [<0000000040255c34>] handle_irq_event_percpu+0x3c/0xd8
[1274934.746891]  [<000000004025ecb4>] handle_percpu_irq+0xb4/0xf0
[1274934.746891]  [<00000000402548e0>] generic_handle_irq+0x50/0x70
[1274934.746891]  [<000000004019a254>] call_on_stack+0x18/0x24
[1274934.746891]
[1274934.746891] Kernel panic - not syncing: Bad Address (null pointer deref?)

The bug is caused by overrunning the sglist and incorrectly testing
sg_dma_len(sglist) before nents. Normally this doesn't cause a crash,
but in this case sglist crossed a page boundary. This occurs in the
following code:

	while (sg_dma_len(sglist) && nents--) {

The fix is simply to test nents first and move the decrement of nents
into the loop.

Reported-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
2022-01-28 10:15:34 +01:00
John David Anglin
9129886b88 parisc: Drop __init from map_pages declaration
With huge kernel pages, we randomly eat a SPARC in map_pages(). This
is fixed by dropping __init from the declaration.

However, map_pages references the __init routine memblock_alloc_try_nid
via memblock_alloc.  Thus, it needs to be marked with __ref.

memblock_alloc is only called before the kernel text is set to readonly.

The __ref on free_initmem is no longer needed.

Comment regarding map_pages being in the init section is removed.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Helge Deller <deller@gmx.de>
2022-01-28 10:15:33 +01:00
Maarten Lankhorst
7a05c5a0c8 drm/i915: Lock dpt_obj around set_cache_level, v2.
set_cache_level may unbind the object, which will result in the below
lockdep splat:
<6> [184.578145] [IGT] kms_addfb_basic: starting subtest addfb25-framebuffer-vs-set-tiling
<4> [184.578220] ------------[ cut here ]------------
<4> [184.578221] WARN_ON(debug_locks && !(lock_is_held(&(&((obj)->base.resv)->lock.base)->dep_map) != 0))
<4> [184.578237] WARNING: CPU: 6 PID: 5544 at drivers/gpu/drm/i915/i915_gem.c:123 i915_gem_object_unbind+0x4a9/0x510 [i915]
<4> [184.578323] Modules linked in: vgem drm_shmem_helper snd_hda_codec_hdmi i915 mei_hdcp x86_pkg_temp_thermal snd_hda_intel coretemp crct10dif_pclmul snd_intel_dspcfg crc32_pclmul ttm snd_hda_codec ghash_clmulni_intel snd_hwdep drm_kms_helper snd_hda_core e1000e mei_me syscopyarea ptp snd_pcm sysfillrect mei pps_core sysimgblt fb_sys_fops prime_numbers intel_lpss_pci smsc75xx usbnet mii
<4> [184.578349] CPU: 6 PID: 5544 Comm: kms_addfb_basic Not tainted 5.16.0-CI-Patchwork_22006+ #1
<4> [184.578351] Hardware name: Intel Corporation Alder Lake Client Platform/AlderLake-P DDR4 RVP, BIOS ADLPFWI1.R00.2422.A00.2110131104 10/13/2021
<4> [184.578352] RIP: 0010:i915_gem_object_unbind+0x4a9/0x510 [i915]
<4> [184.578424] Code: 00 be ff ff ff ff 48 8d 78 68 e8 a2 6e 2b e1 85 c0 0f 85 b1 fb ff ff 48 c7 c6 48 37 9e a0 48 c7 c7 d9 fc a1 a0 e8 a3 54 26 e1 <0f> 0b e9 97 fb ff ff 31 ed 48 8b 5c 24 58 65 48 33 1c 25 28 00 00
<4> [184.578426] RSP: 0018:ffffc900013b3b68 EFLAGS: 00010286
<4> [184.578428] RAX: 0000000000000000 RBX: ffffc900013b3bb0 RCX: 0000000000000001
<4> [184.578429] RDX: 0000000080000001 RSI: ffffffff8230b42d RDI: 00000000ffffffff
<4> [184.578430] RBP: ffff888120e10000 R08: 0000000000000000 R09: c0000000ffff7fff
<4> [184.578431] R10: 0000000000000001 R11: ffffc900013b3980 R12: ffff8881176ea740
<4> [184.578432] R13: ffff888120e10000 R14: 0000000000000000 R15: 0000000000000001
<4> [184.578433] FS:  00007f65074f5e40(0000) GS:ffff88888f300000(0000) knlGS:0000000000000000
<4> [184.578435] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [184.578436] CR2: 00007fff4420ede8 CR3: 000000010c2f2005 CR4: 0000000000770ee0
<4> [184.578437] PKRU: 55555554
<4> [184.578438] Call Trace:
<4> [184.578439]  <TASK>
<4> [184.578440]  ? dma_resv_iter_first_unlocked+0x78/0xf0
<4> [184.578447]  intel_dpt_create+0x88/0x220 [i915]
<4> [184.578530]  intel_framebuffer_init+0x5b8/0x620 [i915]
<4> [184.578612]  intel_framebuffer_create+0x3d/0x60 [i915]
<4> [184.578691]  intel_user_framebuffer_create+0x18f/0x2c0 [i915]
<4> [184.578775]  drm_internal_framebuffer_create+0x36d/0x4c0
<4> [184.578779]  drm_mode_addfb2+0x2f/0xd0
<4> [184.578781]  ? drm_mode_addfb_ioctl+0x10/0x10
<4> [184.578784]  drm_ioctl_kernel+0xac/0x140
<4> [184.578787]  drm_ioctl+0x201/0x3d0
<4> [184.578789]  ? drm_mode_addfb_ioctl+0x10/0x10
<4> [184.578796]  __x64_sys_ioctl+0x6a/0xa0
<4> [184.578800]  do_syscall_64+0x37/0xb0
<4> [184.578803]  entry_SYSCALL_64_after_hwframe+0x44/0xae
<4> [184.578805] RIP: 0033:0x7f6506736317
<4> [184.578807] Code: b3 66 90 48 8b 05 71 4b 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 41 4b 2d 00 f7 d8 64 89 01 48
<4> [184.578808] RSP: 002b:00007fff44211a98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
<4> [184.578810] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f6506736317
<4> [184.578811] RDX: 00007fff44211b30 RSI: 00000000c06864b8 RDI: 0000000000000006
<4> [184.578812] RBP: 00007fff44211b30 R08: 00007fff44311170 R09: 0000000000000000
<4> [184.578813] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000c06864b8
<4> [184.578813] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000
<4> [184.578819]  </TASK>
<4> [184.578820] irq event stamp: 47931
<4> [184.578821] hardirqs last  enabled at (47937): [<ffffffff81130dd2>] __up_console_sem+0x62/0x70
<4> [184.578824] hardirqs last disabled at (47942): [<ffffffff81130db7>] __up_console_sem+0x47/0x70
<4> [184.578826] softirqs last  enabled at (47340): [<ffffffff81e0032d>] __do_softirq+0x32d/0x493
<4> [184.578828] softirqs last disabled at (47335): [<ffffffff810b9196>] irq_exit_rcu+0xa6/0xe0
<4> [184.578830] ---[ end trace f17ec219f892c7d4 ]---

Changes since v1:
- Fix intel_pin_fb_obj_dpt too.

Fixes: 0f341974cb ("drm/i915: Add i915_vma_unbind_unlocked, and take obj lock for i915_vma_unbind, v2.")
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Testcase: kms_addfb_basic
Link: https://patchwork.freedesktop.org/patch/msgid/20220126073703.1215696-1-maarten.lankhorst@linux.intel.com
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
2022-01-28 09:53:58 +01:00
Takashi Iwai
0444f82766 ALSA: hda: Fix signedness of sscanf() arguments
The %x format of sscanf() takes an unsigned int pointer, while we pass
a signed int pointer.  Practically it's OK, but this may result in a
compile warning.  Let's fix it.

Fixes: a235d5b8e5 ("ALSA: hda: Allow model option to specify PCI SSID alias")
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20220127135717.31751-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-01-28 09:22:45 +01:00
Linus Torvalds
374630e3f9 hwmon fixes for v5.17-rc2
- Fix crash in nct6775 driver
 - Prevent divide by zero in adt7470 driver
 - Fix conditional compile warning in pmbus/ir38064 driver
 - Various minor fixes in lm90 driver
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Merge tag 'hwmon-for-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Fix crash in nct6775 driver

 - Prevent divide by zero in adt7470 driver

 - Fix conditional compile warning in pmbus/ir38064 driver

 - Various minor fixes in lm90 driver

* tag 'hwmon-for-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (nct6775) Fix crash in clear_caseopen
  hwmon: (adt7470) Prevent divide by zero in adt7470_fan_write()
  hwmon: (pmbus/ir38064) Mark ir38064_of_match as __maybe_unused
  hwmon: (lm90) Fix sysfs and udev notifications
  hwmon: (lm90) Mark alert as broken for MAX6646/6647/6649
  hwmon: (lm90) Mark alert as broken for MAX6680
  hwmon: (lm90) Mark alert as broken for MAX6654
  hwmon: (lm90) Re-enable interrupts after alert clears
  hwmon: (lm90) Reduce maximum conversion rate for G781
2022-01-28 09:48:20 +02:00
Linus Torvalds
82b550fa99 drm fixes for 5.17-rc2
atomic:
 - fix CRTC handling during modeset
 
 privcy-screen:
 - honor acpi=off
 
 ttm:
 - build fix for um
 
 panel:
 - add oreientation quirk for 1NetBook OneXPlayer
 
 amdgpu:
 - Proper fix for otg synchronization logic regression
 - DCN3.01 fixes
 - Filter out secondary radeon PCI IDs
 - udelay fixes
 - Fix a memory leak in an error path
 
 msm:
 - parameter check fixes
 - put_device balancing
 - idle/suspend fixes
 
 etnaviv:
 - relax submit size checks
 
 vc4:
 - fix potential deadlock in DSI code
 
 ast:
 - revert 1600x900 mode change
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Merge tag 'drm-fixes-2022-01-28' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "This week's regular normal fixes. amdgpu and msm make up the bulk of
  it, with a scattering of fixes elsewhere.

  atomic:
   - fix CRTC handling during modeset

  privcy-screen:
   - honor acpi=off

  ttm:
   - build fix for um

  panel:
   - add orientation quirk for 1NetBook OneXPlayer

  amdgpu:
   - Proper fix for otg synchronization logic regression
   - DCN3.01 fixes
   - Filter out secondary radeon PCI IDs
   - udelay fixes
   - Fix a memory leak in an error path

  msm:
   - parameter check fixes
   - put_device balancing
   - idle/suspend fixes

  etnaviv:
   - relax submit size checks

  vc4:
   - fix potential deadlock in DSI code

  ast:
   - revert 1600x900 mode change"

* tag 'drm-fixes-2022-01-28' of git://anongit.freedesktop.org/drm/drm: (25 commits)
  drm/privacy-screen: honor acpi=off in detect_thinkpad_privacy_screen
  Revert "drm/ast: Support 1600x900 with 108MHz PCLK"
  drm/amdgpu/display: Remove t_srx_delay_us.
  drm/amd/display: Wrap dcn301_calculate_wm_and_dlg for FPU.
  drm/amd/display: Fix FP start/end for dcn30_internal_validate_bw.
  drm/amd/display/dc/calcs/dce_calcs: Fix a memleak in calculate_bandwidth()
  drm/amdgpu/display: use msleep rather than udelay for long delays
  drm/amdgpu/display: adjust msleep limit in dp_wait_for_training_aux_rd_interval
  drm/amdgpu: filter out radeon secondary ids as well
  drm/amd/display: change FIFO reset condition to embedded display only
  drm/amd/display: Correct MPC split policy for DCN301
  drm/amd/display: Fix for otg synchronization logic
  drm/etnaviv: relax submit size limits
  drm/msm/gpu: Cancel idle/boost work on suspend
  drm/msm/gpu: Wait for idle before suspending
  drm/atomic: Add the crtc to affected crtc only if uapi.enable = true
  drm/msm/dsi: invalid parameter check in msm_dsi_phy_enable
  drm/msm/a6xx: Add missing suspend_count increment
  drm/msm: Fix wrong size calculation
  drm/msm/dpu: invalid parameter check in dpu_setup_dspp_pcc
  ...
2022-01-28 09:43:00 +02:00
Ville Syrjälä
14683babf8 drm/i915: Move drrs hardware bit frobbing to small helpers
Split the drrs code that actually changes the refresh rate
(via PIPECONF or M/N values) to small helper functions that
only deal with the hardware details an nothing else. We'll
soon have a third way of doing this, and it's less confusing
when each difference method lives in its own funciton.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127093303.17309-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2022-01-28 08:48:49 +02:00
Ville Syrjälä
5f721a5d1b drm/i915: s/gmch_{m,n}/data_{m,n}/
Rename the gmch_* M/N members to data_* to match the register
definitions and thus make life a little less confusing.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127093303.17309-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2022-01-28 08:48:35 +02:00
Ville Syrjälä
c65b3affc6 drm/i915: Clean up M/N register defines
Use REG_GENMASK() & co. for the M/N register values. There are
also a lot of weird unused defines (eg. *_OFFSET) we can just
throw out.

Also let's mask out the unused bits during readout for good
measure. Previously we only masked out the TU_SIZE from one
of the registers, which was a bit too inconsistent for my
taste.

v2: Mention the readout masking in the commit msg  (Jani)
    Deal wth gvt

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127120219.20143-1-ville.syrjala@linux.intel.com
2022-01-28 08:47:51 +02:00
Ville Syrjälä
d29c993027 drm/i915: Extract intel_{get,set}_m_n()
Make the M/N setup/readout a bit less repitive by extracting
a few small helpers.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127093303.17309-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2022-01-28 08:47:37 +02:00
Thomas Hellström
bc1922e5d3 drm/i915: Fix a race between vma / object destruction and unbinding
The vma destruction code was using an unlocked advisory check for
drm_mm_node_allocated() to avoid racing with eviction code unbinding
the vma.

This is very fragile and prohibits the dereference of non-refcounted
pointers of dying vmas after a call to __i915_vma_unbind(). It also
prohibits the dereference of vma->obj of refcounted pointers of
dying vmas after a call to __i915_vma_unbind(), since even if a
refcount is held on the vma, that won't guarantee that its backing
object doesn't get destroyed.

So introduce an unbind under the vm mutex at object destroy time,
removing all weak references of the vma and its object from the
object vma list and from the vm bound list.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127115622.302970-1-thomas.hellstrom@linux.intel.com
2022-01-28 07:28:12 +01:00
Fabio Estevam
42c9b28e68 ARM: dts: imx23-evk: Remove MX23_PAD_SSP1_DETECT from hog group
Currently, SD card fails to mount due to the following pinctrl error:

[   11.170000] imx23-pinctrl 80018000.pinctrl: pin SSP1_DETECT already requested by 80018000.pinctrl; cannot claim for 80010000.spi
[   11.180000] imx23-pinctrl 80018000.pinctrl: pin-65 (80010000.spi) status -22
[   11.190000] imx23-pinctrl 80018000.pinctrl: could not request pin 65 (SSP1_DETECT) from group mmc0-pins-fixup.0  on device 80018000.pinctrl
[   11.200000] mxs-mmc 80010000.spi: Error applying setting, reverse things back

Fix it by removing the MX23_PAD_SSP1_DETECT pin from the hog group as it
is already been used by the mmc0-pins-fixup pinctrl group.

With this change the rootfs can be mounted and the imx23-evk board can
boot successfully.

Cc: <stable@vger.kernel.org>
Fixes: bc3875f1a6 ("ARM: dts: mxs: modify mx23/mx28 dts files to use pinctrl headers")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2022-01-28 13:59:21 +08:00
Dave Airlie
db5aa1497d Merge tag 'amd-drm-fixes-5.17-2022-01-26' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.17-2022-01-26:

amdgpu:
- Proper fix for otg synchronization logic regression
- DCN3.01 fixes
- Filter out secondary radeon PCI IDs
- udelay fixes
- Fix a memory leak in an error path

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127041006.5695-1-alexander.deucher@amd.com
2022-01-28 14:59:44 +10:00
Dave Airlie
b1d83f4c94 Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes
- relax submit size checks.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/8c2cb3e3a702be86db9d43ca8927b6b78ac2b1d2.camel@pengutronix.de
2022-01-28 14:56:37 +10:00
Dave Airlie
52fa904e51 Merge tag 'drm-msm-fixes-2022-01-25' of https://gitlab.freedesktop.org/drm/msm into drm-fixes
A few msm fixes.
- parameter checks
- put_device balancing
- idle/suspend fixes

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvAfsgtr==VM4wixAC_hSTuV=eNWXxX=BhZqQrbxHjKgg@mail.gmail.com
2022-01-28 14:52:41 +10:00
Dave Airlie
2fd0e5fb4b * drm/ast: Revert 1600x800 with 108MHz PCLK
* drm/atomic: fix CRTC handling during modeset
  * drm/privacy-screen: Honor acpi=off
  * drm/ttm: build fix for ARCH=um
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Merge tag 'drm-misc-fixes-2022-01-27' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

 * drm/ast: Revert 1600x800 with 108MHz PCLK
 * drm/atomic: fix CRTC handling during modeset
 * drm/privacy-screen: Honor acpi=off
 * drm/ttm: build fix for ARCH=um

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

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YfJgH9fz+oo7YSXd@linux-uq9g.fritz.box
2022-01-28 14:46:18 +10:00
Dave Airlie
23ecd4c135 * vc4: Fix potential deadlock in DSI code
* panel: Add orientation quirk for 1Netbook OneXPlayer
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Merge tag 'drm-misc-next-fixes-2022-01-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

 * vc4: Fix potential deadlock in DSI code
 * panel: Add orientation quirk for 1Netbook OneXPlayer

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

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/Yepuhj+Ks+IyJ9Dp@linux-uq9g
2022-01-28 14:37:46 +10:00