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WARNING: CPU: 0 PID: 5854 at kernel/signal.c:2008 posixtimer_send_sigqueue+0x9da/0xbc0 kernel/signal.c:2008
Modules linked in:
CPU: 0 UID: 0 PID: 5854 Comm: syz-executor139 Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:posixtimer_send_sigqueue+0x9da/0xbc0 kernel/signal.c:2008
Code: df 80 3c 08 00 74 08 48 89 df e8 c1 ad a5 00 4c 89 2b eb 51 e8 a7 32 3b 00 41 be 02 00 00 00 e9 e9 fd ff ff e8 97 32 3b 00 90 <0f> 0b 90 e9 f2 fa ff ff 4c 89 ef e8 86 33 5a 03 84 c0 0f 84 aa 01
RSP: 0018:ffffc90000007bc0 EFLAGS: 00010006
RAX: ffffffff81644979 RBX: 0000000000000000 RCX: ffff888027dd8000
RDX: 0000000000010000 RSI: 000000000000001e RDI: 0000000000000009
RBP: ffffc90000007cc0 R08: ffffffff816450cc R09: 1ffffffff2857112
R10: dffffc0000000000 R11: fffffbfff2857113 R12: ffff8880203f6264
R13: 1ffff1100407ec4c R14: ffff8880203f61e0 R15: ffff8880203f62a0
FS: 0000555573d1f480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61ecbdf388 CR3: 0000000036944000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
alarm_handle_timer+0x2f/0x60 kernel/time/alarmtimer.c:537
alarmtimer_fired+0x173/0x410 kernel/time/alarmtimer.c:205
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5853
Code: 2b 00 74 08 4c 89 f7 e8 7a 52 8f 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90003bf6ea0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200077ede0 RCX: ffff888027dd8ad8
RDX: dffffc0000000000 RSI: ffffffff8c0aea60 RDI: ffffffff8c605b60
RBP: ffffc90003bf6fe8 R08: ffffffff942b88b7 R09: 1ffffffff2857116
R10: dffffc0000000000 R11: fffffbfff2857117 R12: 1ffff9200077eddc
R13: dffffc0000000000 R14: ffffc90003bf6f00 R15: 0000000000000246
down_read_killable+0xca/0xd30 kernel/locking/rwsem.c:1547
mmap_read_lock_killable include/linux/mmap_lock.h:198 [inline]
__get_user_pages_locked mm/gup.c:1726 [inline]
get_dump_page+0xe2/0x2f0 mm/gup.c:2269
dump_user_range+0x14d/0x970 fs/coredump.c:943
elf_core_dump+0x3e9f/0x4790 fs/binfmt_elf.c:2127
do_coredump+0x214b/0x2e60 fs/coredump.c:758
get_signal+0x140b/0x1750 kernel/signal.c:2995
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
irqentry_exit_to_user_mode+0x7e/0x250 kernel/entry/common.c:231
exc_page_fault+0x590/0x8c0 arch/x86/mm/fault.c:1542
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f61ecb6431e
Code: fd d7 c9 0f bc d1 c5 fe 7f 27 c5 fe 7f 6f 20 c5 fe 7f 77 40 c5 fe 7f 7f 60 49 83 c0 1f 49 29 d0 48 8d 7c 17 61 e9 d2 04 00 00 <c5> fe 6f 1e c5 fe 6f 56 20 c5 fd 74 cb c5 fd d7 d1 49 83 f8 21 0f
RSP: 002b:00007ffd91b57128 EFLAGS: 00010287
RAX: 00007ffd91b57130 RBX: 00007ffd91b57130 RCX: 0000000000000000
RDX: 00000000000000e0 RSI: 0000000000000000 RDI: 00007ffd91b57130
RBP: 00007ffd91b57280 R08: 00000000000000e0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00000000000f4240 R14: 00000000000140b7 R15: 00007ffd91b57264
</TASK>
----------------
Code disassembly (best guess):
0: 2b 00 sub (%rax),%eax
2: 74 08 je 0xc
4: 4c 89 f7 mov %r14,%rdi
7: e8 7a 52 8f 00 call 0x8f5286
c: f6 44 24 61 02 testb $0x2,0x61(%rsp)
11: 0f 85 85 01 00 00 jne 0x19c
17: 41 f7 c7 00 02 00 00 test $0x200,%r15d
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp)
28: e0 45
* 2a: 4b c7 44 25 00 00 00 movq $0x0,0x0(%r13,%r12,1) <-- trapping instruction
31: 00 00
33: 43 c7 44 25 09 00 00 movl $0x0,0x9(%r13,%r12,1)
3a: 00 00
3c: 43 rex.XB
3d: c7 .byte 0xc7
3e: 44 rex.R
3f: 25 .byte 0x25