BUG: unable to handle page fault for address: ffffffff838c83d9
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 5e11067 P4D 5e11067 PUD 5e12063 PMD 38001e1
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 524 Comm: syz.4.43 Not tainted 5.4.290-syzkaller-00017-g6b07fcd94a6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__hlist_del include/linux/list.h:791 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers kernel/time/timer.c:1482 [inline]
RIP: 0010:__run_timers+0x7be/0xbe0 kernel/time/timer.c:1817
Code: 74 2e e8 a5 66 0f 00 49 83 c5 08 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 32 51 3f 00 <4d> 89 65 00 eb 05 e8 77 66 0f 00 49 bd 00 00 00 00 00 fc ff df 42
RSP: 0000:ffff8881f6f09d60 EFLAGS: 00010046
RAX: 1ffffffff071907b RBX: 1ffff1103d5fce39 RCX: dffffc0000000000
RDX: 0000000000000102 RSI: 0000000000000004 RDI: ffff8881f6f09ce0
RBP: ffff8881f6f09ec8 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f6f09e20
R13: ffffffff838c83d9 R14: 1ffff1103d5fce38 R15: ffff8881eafe71c8
FS: 00007f3462a946c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff838c83d9 CR3: 00000001d3b9b000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:539 [inline]
smp_apic_timer_interrupt+0x11a/0x490 arch/x86/kernel/apic/apic.c:1161
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:4558
Code: 4c 89 e7 e8 70 d2 3d fd f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 74 8d ee fc fb bf 01 00 00 00 b9 e6 ff ff fa bf 01 00 00 00 e8 de 8e ee fc 65 48 8b 1d 86 2a
RSP: 0000:ffff8881e7d17da0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1103cee212f RBX: 1ffff1103cfa2fb8 RCX: ffffffff84573f00
RDX: ffffc90002948000 RSI: 0000000000001f30 RDI: 0000000000000001
RBP: ffff8881e7d17e38 R08: ffffffff8231cdb9 R09: ffffed103edeb135
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881e7d17dc0
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1103cfa2fb4
retint_kernel+0x1b/0x1b
RIP: 0010:exit_to_usermode_loop+0x20/0x1a0 arch/x86/entry/common.c:148
Code: 2e 0f 1f 84 00 00 00 00 00 90 41 57 41 56 41 54 53 41 89 f7 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 84 e1 63 00 fb 44 89 fe <83> e6 08 31 ff e8 66 e4 63 00 44 89 f8 83 e0 08 75 07 e8 69 e1 63
RSP: 0000:ffff8881e7d17ef0 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff13
RAX: ffffffff8100697c RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90002948000 RSI: 0000000000000008 RDI: 0000000000001f0d
RBP: 0000000000000008 R08: ffffffff810067f2 R09: ffffed103cee2001
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff1103cee2000 R14: ffff8881e7d17f58 R15: 0000000000000008
prepare_exit_to_usermode+0x199/0x200 arch/x86/entry/common.c:194
ret_from_intr+0x1c/0x1c
RIP: 0033:0x7f34642ed280
Code: 48 63 f6 4c 01 f6 e8 2f fb ff ff eb a6 b8 01 00 00 00 48 81 c4 b8 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 66 0f 1f 44 00 00 <80> 3d 22 79 35 00 00 48 8b 47 10 48 8b 4f 18 74 1f 48 8b 30 89 f2
RSP: 002b:00007f3462a94058 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 00007f3464642fa0 RBX: 00007f3464642fa0 RCX: 00007f3464642fa0
RDX: 00007f3464533840 RSI: 0000000000000000 RDI: 00007f3464643038
RBP: 00007f34644ab2a0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3464642fa0 R15: 00007ffe316a2fe8
Modules linked in:
CR2: ffffffff838c83d9
---[ end trace 726010e5133d247c ]---
RIP: 0010:__hlist_del include/linux/list.h:791 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers kernel/time/timer.c:1482 [inline]
RIP: 0010:__run_timers+0x7be/0xbe0 kernel/time/timer.c:1817
Code: 74 2e e8 a5 66 0f 00 49 83 c5 08 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 32 51 3f 00 <4d> 89 65 00 eb 05 e8 77 66 0f 00 49 bd 00 00 00 00 00 fc ff df 42
RSP: 0000:ffff8881f6f09d60 EFLAGS: 00010046
RAX: 1ffffffff071907b RBX: 1ffff1103d5fce39 RCX: dffffc0000000000
RDX: 0000000000000102 RSI: 0000000000000004 RDI: ffff8881f6f09ce0
RBP: ffff8881f6f09ec8 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f6f09e20
R13: ffffffff838c83d9 R14: 1ffff1103d5fce38 R15: ffff8881eafe71c8
FS: 00007f3462a946c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff838c83d9 CR3: 00000001d3b9b000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 74 2e je 0x30
2: e8 a5 66 0f 00 call 0xf66ac
7: 49 83 c5 08 add $0x8,%r13
b: 4c 89 e8 mov %r13,%rax
e: 48 c1 e8 03 shr $0x3,%rax
12: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
19: fc ff df
1c: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1)
20: 74 08 je 0x2a
22: 4c 89 ef mov %r13,%rdi
25: e8 32 51 3f 00 call 0x3f515c
* 2a: 4d 89 65 00 mov %r12,0x0(%r13) <-- trapping instruction
2e: eb 05 jmp 0x35
30: e8 77 66 0f 00 call 0xf66ac
35: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
3c: fc ff df
3f: 42 rex.X