Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000025: 0000 [#1] SMP KASAN PTI
KASAN: maybe wild-memory-access in range [0xdead000000000128-0xdead00000000012f]
CPU: 0 UID: 0 PID: 30955 Comm: syz.7.5213 Tainted: G U L syzkaller #0 PREEMPT(full)
Tainted: [U]=USER, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:__hlist_del include/linux/list.h:994 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:891 [inline]
RIP: 0010:expire_timers kernel/time/timer.c:1782 [inline]
RIP: 0010:__run_timers+0x6ac/0xac0 kernel/time/timer.c:2373
Code: 22 00 0f 85 b8 02 00 00 4c 89 38 48 89 44 24 08 4d 85 ff 74 24 e8 64 4c 14 00 49 8d 7f 08 48 8b 44 24 08 48 89 fa 48 c1 ea 03 <42> 80 3c 22 00 0f 85 d5 02 00 00 49 89 47 08 e8 40 4c 14 00 48 8d
RSP: 0018:ffffc90000007d50 EFLAGS: 00010802
RAX: ffffc90000007e10 RBX: ffff8880b8523620 RCX: ffffffff81f20031
RDX: 1bd5a00000000025 RSI: ffffffff81f1fe1c RDI: dead00000000012a
RBP: ffffc90000007e10 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: fffff52000000fc2 R14: ffff8880b8425200 R15: dead000000000122
FS: 00007fb20e4a36c0(0000) GS:ffff8881245e3000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b350edff8 CR3: 0000000060dca000 CR4: 00000000003526f0
Call Trace:
__run_timer_base kernel/time/timer.c:2385 [inline]
__run_timer_base kernel/time/timer.c:2377 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2394
run_timer_softirq+0x10/0x50 kernel/time/timer.c:2402
handle_softirqs+0x1ea/0x910 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:copy_mc_enhanced_fast_string+0x6/0xf arch/x86/lib/copy_mc_64.S:130
Code: 89 ca e9 1d fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 d1 a4 31 c0 c3 cc cc cc cc 48 89 c8 e9 99 7e 04 00 66 0f 1f 84 00
RSP: 0018:ffffc9000c5f70a8 EFLAGS: 00010246
RAX: ffff8880861c1000 RBX: 0000000000001000 RCX: 0000000000000fc0
RDX: 0000000000001000 RSI: ffff88808e1c6040 RDI: ffff8880861c1040
RBP: ffff8880861c1000 R08: 0000000000000000 R09: ffffed1011c38dff
R10: ffff88808e1c6fff R11: 0000000000000000 R12: ffff88808e1c6000
R13: dffffc0000000000 R14: ffffea0002387180 R15: ffffc9000c5f7848
copy_mc_to_kernel+0x47/0xc0 arch/x86/lib/copy_mc.c:75
dump_page_copy fs/coredump.c:1321 [inline]
dump_user_range+0x21f/0xb50 fs/coredump.c:1372
elf_core_dump+0x2d16/0x3c60 fs/binfmt_elf.c:2111
coredump_write fs/coredump.c:1049 [inline]
do_coredump fs/coredump.c:1126 [inline]
vfs_coredump+0x276c/0x5530 fs/coredump.c:1200
get_signal+0x1f2a/0x21e0 kernel/signal.c:3019
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop kernel/entry/common.c:75 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x1f8/0x670 kernel/entry/common.c:196
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x21000
Code: Unable to access opcode bytes at 0x20fd6.
RSP: 002b:000000000000000a EFLAGS: 00010282
RAX: 0000000000000003 RBX: 00007fb20d815fa0 RCX: 00007fb20d59aeb9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000020003b46
RBP: 00007fb20d608c1f R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb20d816038 R14: 00007fb20d815fa0 R15: 00007fffb95e27c8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__hlist_del include/linux/list.h:994 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:891 [inline]
RIP: 0010:expire_timers kernel/time/timer.c:1782 [inline]
RIP: 0010:__run_timers+0x6ac/0xac0 kernel/time/timer.c:2373
Code: 22 00 0f 85 b8 02 00 00 4c 89 38 48 89 44 24 08 4d 85 ff 74 24 e8 64 4c 14 00 49 8d 7f 08 48 8b 44 24 08 48 89 fa 48 c1 ea 03 <42> 80 3c 22 00 0f 85 d5 02 00 00 49 89 47 08 e8 40 4c 14 00 48 8d
RSP: 0018:ffffc90000007d50 EFLAGS: 00010802
RAX: ffffc90000007e10 RBX: ffff8880b8523620 RCX: ffffffff81f20031
RDX: 1bd5a00000000025 RSI: ffffffff81f1fe1c RDI: dead00000000012a
RBP: ffffc90000007e10 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: fffff52000000fc2 R14: ffff8880b8425200 R15: dead000000000122
FS: 00007fb20e4a36c0(0000) GS:ffff8881245e3000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000021000 CR3: 0000000060dca000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 22 00 and (%rax),%al
2: 0f 85 b8 02 00 00 jne 0x2c0
8: 4c 89 38 mov %r15,(%rax)
b: 48 89 44 24 08 mov %rax,0x8(%rsp)
10: 4d 85 ff test %r15,%r15
13: 74 24 je 0x39
15: e8 64 4c 14 00 call 0x144c7e
1a: 49 8d 7f 08 lea 0x8(%r15),%rdi
1e: 48 8b 44 24 08 mov 0x8(%rsp),%rax
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 42 80 3c 22 00 cmpb $0x0,(%rdx,%r12,1) <-- trapping instruction
2f: 0f 85 d5 02 00 00 jne 0x30a
35: 49 89 47 08 mov %rax,0x8(%r15)
39: e8 40 4c 14 00 call 0x144c7e
3e: 48 rex.W
3f: 8d .byte 0x8d