BUG: unable to handle page fault for address: ffffffff82bac351 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD 5e11067 P4D 5e11067 PUD 5e12063 PMD 2a001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 10 Comm: ksoftirqd/0 Not tainted 5.4.289-syzkaller-00011-g39762b7a60e9 #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 35 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 c2 50 3f 00 <4d> 89 65 00 eb 05 e8 07 66 0f 00 49 bd 00 00 00 00 00 fc ff df 42 RSP: 0000:ffff8881f5dd7ba0 EFLAGS: 00010046 RAX: 1ffffffff057586a RBX: 1ffff1103d8e3639 RCX: dffffc0000000000 RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f5dd7b20 RBP: ffff8881f5dd7d08 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f5dd7c60 R13: ffffffff82bac351 R14: 1ffff1103d8e3638 R15: ffff8881ec71b1c8 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff82bac351 CR3: 00000001ecedb000 CR4: 00000000003406b0 DR0: 0010000010000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:603 smpboot_thread_fn+0x545/0x930 kernel/smpboot.c:165 kthread+0x2da/0x360 kernel/kthread.c:288 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354 Modules linked in: CR2: ffffffff82bac351 ---[ end trace 191aaf74e65d6e8f ]--- 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 35 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 c2 50 3f 00 <4d> 89 65 00 eb 05 e8 07 66 0f 00 49 bd 00 00 00 00 00 fc ff df 42 RSP: 0000:ffff8881f5dd7ba0 EFLAGS: 00010046 RAX: 1ffffffff057586a RBX: 1ffff1103d8e3639 RCX: dffffc0000000000 RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f5dd7b20 RBP: ffff8881f5dd7d08 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f5dd7c60 R13: ffffffff82bac351 R14: 1ffff1103d8e3638 R15: ffff8881ec71b1c8 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff82bac351 CR3: 00000001ecedb000 CR4: 00000000003406b0 DR0: 0010000010000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 74 2e je 0x30 2: e8 35 66 0f 00 call 0xf663c 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 c2 50 3f 00 call 0x3f50ec * 2a: 4d 89 65 00 mov %r12,0x0(%r13) <-- trapping instruction 2e: eb 05 jmp 0x35 30: e8 07 66 0f 00 call 0xf663c 35: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 3c: fc ff df 3f: 42 rex.X