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Pasha Tatashin f4da7afe07 kexec_file: increase maximum file size to 4G 
In some case initrd can be large.  For example, it could be a netboot
image loaded by u-root, that is kexec'ing into it.

The maximum size of initrd is arbitrary set to 2G.  Also, the limit is not
very obvious because it is hidden behind a generic INT_MAX macro.

Theoretically, we could make it LONG_MAX, but it is safer to keep it sane,
and just increase it to 4G.

Increase the size to 4G, and make it obvious by having a new macro that
specifies the maximum file size supported by kexec_file_load() syscall:
KEXEC_FILE_SIZE_MAX.

Link: https://lkml.kernel.org/r/20220527025535.3953665-3-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Sasha Levin <sashal@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-06-16 19:58:21 -07:00
..
bpf bpf: Fix calling global functions from BPF_PROG_TYPE_EXT programs 2022-06-07 10:41:20 -07:00
cgroup Merge branch 'for-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2022-05-25 11:47:25 -07:00
configs x86/configs: Add x86 debugging Kconfig fragment plus docs 2022-04-06 19:56:29 +02:00
debug Modules updates for v5.19-rc1 2022-05-26 17:13:43 -07:00
dma swiotlb: fix setting ->force_bounce 2022-06-02 07:17:59 +02:00
entry * Fix syzkaller NULL pointer dereference 2022-06-08 09:16:31 -07:00
events Two small perf updates: 2022-06-05 10:40:31 -07:00
futex drm for 5.19-rc1 2022-05-25 16:18:27 -07:00
gcov gcov: Remove compiler version check 2021-12-02 17:25:21 +09:00
irq Updates for interrupt core and drivers: 2022-05-23 16:58:49 -07:00
kcsan linux-kselftest-kunit-5.19-rc1 2022-05-25 11:32:53 -07:00
livepatch Livepatching changes for 5.19 2022-06-02 08:55:01 -07:00
locking sysctl changes for v5.19-rc1 2022-05-26 16:57:20 -07:00
module module: Fix prefix for module.sig_enforce module param 2022-06-02 12:44:33 -07:00
power cxl for 5.19 2022-05-27 21:24:19 -07:00
printk Revert "printk: wake up all waiters" 2022-05-27 13:04:46 +02:00
rcu sysctl changes for v5.19-rc1 2022-05-26 16:57:20 -07:00
sched Fix the fallout of sysctl code move which placed the init function wrong. 2022-06-05 10:42:40 -07:00
time While looking at the ptrace problems with PREEMPT_RT and the problems 2022-06-03 16:13:25 -07:00
trace Networking fixes for 5.19-rc2, including fixes from bpf and netfilter. 2022-06-09 12:06:52 -07:00
.gitignore
acct.c kernel/acct: move acct sysctls to its own file 2022-04-06 13:43:44 -07:00
async.c Revert "module, async: async_synchronize_full() on module init iff async is used" 2022-02-03 11:20:34 -08:00
audit_fsnotify.c fsnotify: make allow_dups a property of the group 2022-04-25 14:37:18 +02:00
audit_tree.c audit: use fsnotify group lock helpers 2022-04-25 14:37:28 +02:00
audit_watch.c fsnotify: pass flags argument to fsnotify_alloc_group() 2022-04-25 14:37:12 +02:00
audit.c audit: improve audit queue handling when "audit=1" on cmdline 2022-01-25 13:22:51 -05:00
audit.h audit: log AUDIT_TIME_* records only from rules 2022-02-22 13:51:40 -05:00
auditfilter.c audit/stable-5.17 PR 20220110 2022-01-11 13:08:21 -08:00
auditsc.c audit,io_uring,io-wq: call __audit_uring_exit for dummy contexts 2022-05-17 15:03:36 -04:00
backtracetest.c
bounds.c
capability.c xfs: don't generate selinux audit messages for capability testing 2022-03-09 10:32:06 -08:00
cfi.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c Intel Trust Domain Extensions 2022-05-23 17:51:12 -07:00
crash_core.c Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
crash_dump.c
cred.c x86: Mark __invalid_creds() __noreturn 2022-03-15 10:32:44 +01:00
delayacct.c delayacct: track delays from write-protect copy 2022-06-01 15:55:25 -07:00
dma.c
exec_domain.c
exit.c ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
extable.c lkdtm: Really write into kernel text in WRITE_KERN 2022-02-16 23:25:12 +11:00
fail_function.c
fork.c This set of changes updates init and user mode helper tasks to be 2022-06-03 16:03:05 -07:00
freezer.c
gen_kheaders.sh kheaders: Have cpio unconditionally replace files 2022-05-08 03:16:59 +09:00
groups.c
hung_task.c Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
iomem.c
irq_work.c irq_work: use kasan_record_aux_stack_noalloc() record callstack 2022-04-15 14:49:55 -07:00
jump_label.c
kallsyms.c ftrace: Add ftrace_lookup_symbols function 2022-05-10 14:42:06 -07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels" 2022-03-31 10:36:55 +02:00
kcov.c kcov: update pos before writing pc in trace function 2022-05-25 13:05:42 -07:00
kexec_core.c Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
kexec_elf.c
kexec_file.c kexec_file: increase maximum file size to 4G 2022-06-16 19:58:21 -07:00
kexec_internal.h
kexec.c
kheaders.c
kmod.c
kprobes.c tracing updates for 5.19: 2022-05-29 10:31:36 -07:00
ksysfs.c kernel/ksysfs.c: use helper macro __ATTR_RW 2022-03-23 19:00:33 -07:00
kthread.c kthread: unexport kthread_blkcg 2022-05-02 14:06:20 -06:00
latencytop.c latencytop: move sysctl to its own file 2022-04-21 11:40:59 -07:00
Makefile kernel: add platform_has() infrastructure 2022-06-06 08:06:00 +02:00
module_signature.c
notifier.c notifier: Add blocking/atomic_notifier_chain_register_unique_prio() 2022-05-19 19:30:30 +02:00
nsproxy.c
padata.c padata: replace cpumask_weight with cpumask_empty in padata.c 2022-01-31 11:21:46 +11:00
panic.c sysctl changes for v5.19-rc1 2022-05-26 16:57:20 -07:00
params.c kobject: remove kset from struct kset_uevent_ops callbacks 2021-12-28 11:26:18 +01:00
pid_namespace.c kernel: pid_namespace: use NULL instead of using plain integer as pointer 2022-04-29 14:38:00 -07:00
pid.c
platform-feature.c kernel: add platform_has() infrastructure 2022-06-06 08:06:00 +02:00
profile.c profiling: fix shift too large makes kernel panic 2022-06-16 19:58:20 -07:00
ptrace.c While looking at the ptrace problems with PREEMPT_RT and the problems 2022-06-03 16:13:25 -07:00
range.c
reboot.c kernel/reboot: Fix powering off using a non-syscall code paths 2022-06-07 19:42:31 +02:00
regset.c
relay.c relay: remove redundant assignment to pointer buf 2022-05-12 20:38:37 -07:00
resource_kunit.c
resource.c kernel/resource: fix kfree() of bootmem memory again 2022-03-23 19:00:35 -07:00
rseq.c rseq: Remove broken uapi field layout on 32-bit little endian 2022-02-02 13:11:34 +01:00
scftorture.c scftorture: Fix distribution of short handler delays 2022-04-11 17:07:29 -07:00
scs.c kasan, vmalloc: only tag normal vmalloc allocations 2022-03-24 19:06:48 -07:00
seccomp.c seccomp: Add wait_killable semantic to seccomp user notifier 2022-05-03 14:11:58 -07:00
signal.c While looking at the ptrace problems with PREEMPT_RT and the problems 2022-06-03 16:13:25 -07:00
smp.c Scheduler changes in this cycle were: 2022-05-24 11:11:13 -07:00
smpboot.c cpu/hotplug: Allow the CPU in CPU_UP_PREPARE state to be brought up again. 2022-04-12 14:13:01 +02:00
smpboot.h
softirq.c smp: Make softirq handling RT safe in flush_smp_call_function_queue() 2022-05-01 10:03:43 +02:00
stackleak.c stackleak: add on/off stack variants 2022-05-08 01:33:09 -07:00
stacktrace.c uaccess: remove CONFIG_SET_FS 2022-02-25 09:36:06 +01:00
static_call_inline.c static_call: Don't make __static_call_return0 static 2022-04-05 09:59:38 +02:00
static_call.c static_call: Don't make __static_call_return0 static 2022-04-05 09:59:38 +02:00
stop_machine.c Scheduler changes in this cycle were: 2022-05-24 11:11:13 -07:00
sys_ni.c mm/mempolicy: wire up syscall set_mempolicy_home_node 2022-01-15 16:30:30 +02:00
sys.c arm64/sme: Implement vector length configuration prctl()s 2022-04-22 18:50:54 +01:00
sysctl-test.c
sysctl.c sysctl changes for v5.19-rc1 2022-05-26 16:57:20 -07:00
task_work.c task_work: allow TWA_SIGNAL without a rescheduling IPI 2022-04-30 08:39:32 -06:00
taskstats.c kernel: make taskstats available from all net namespaces 2022-04-29 14:38:03 -07:00
torture.c torture: Wake up kthreads after storing task_struct pointer 2022-02-01 17:24:39 -08:00
tracepoint.c
tsacct.c taskstats: version 12 with thread group and exe info 2022-04-29 14:38:03 -07:00
ucount.c ucounts: Handle wrapping in is_ucounts_overlimit 2022-02-17 09:11:57 -06:00
uid16.c
uid16.h
umh.c kthread: Don't allocate kthread_struct for init and umh 2022-05-06 14:49:44 -05:00
up.c
user_namespace.c ucounts: Fix systemd LimitNPROC with private users regression 2022-02-25 10:40:14 -06:00
user-return-notifier.c
user.c
usermode_driver.c blob_to_mnt(): kern_unmount() is needed to undo kern_mount() 2022-05-19 23:25:47 -04:00
utsname_sysctl.c
utsname.c
watch_queue.c watch_queue: Free the page array when watch_queue is dismantled 2022-04-02 10:37:39 -07:00
watchdog_hld.c printk: add functions to prefer direct printing 2022-04-22 21:30:58 +02:00
watchdog.c Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
workqueue_internal.h
workqueue.c workqueue: Wrap flush_workqueue() using a macro 2022-06-07 07:07:14 -10:00