kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 17 Comm: ksoftirqd/1 Tainted: G W 5.4.274-syzkaller-00002-g6f97bd951d82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:__write_once_size include/linux/compiler.h:295 [inline] RIP: 0010:__hlist_del include/linux/list.h:789 [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+0x77f/0xbe0 kernel/time/timer.c:1817 Code: 00 00 00 00 00 fc ff df 80 3c 03 00 74 08 4c 89 ff e8 25 4e 3f 00 4d 8b 27 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 83 4e 3f 00 4d 89 2c 24 4d 85 ed 74 RSP: 0018:ffff8881f5e2fba0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 1ffff1103daf8e39 RCX: dffffc0000000000 RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f5e2fb20 RBP: ffff8881f5e2fd08 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000000 R13: dead000000000122 R14: 1ffff1103daf8e38 R15: ffff8881ed7c71c8 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f965637dd00 CR3: 00000001e4a48000 CR4: 00000000003406a0 DR0: 0000000020000280 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: ---[ end trace 2522bf643e98cffe ]--- RIP: 0010:__write_once_size include/linux/compiler.h:295 [inline] RIP: 0010:__hlist_del include/linux/list.h:789 [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+0x77f/0xbe0 kernel/time/timer.c:1817 Code: 00 00 00 00 00 fc ff df 80 3c 03 00 74 08 4c 89 ff e8 25 4e 3f 00 4d 8b 27 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 83 4e 3f 00 4d 89 2c 24 4d 85 ed 74 RSP: 0018:ffff8881f5e2fba0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 1ffff1103daf8e39 RCX: dffffc0000000000 RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f5e2fb20 RBP: ffff8881f5e2fd08 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000000 R13: dead000000000122 R14: 1ffff1103daf8e38 R15: ffff8881ed7c71c8 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f965637dd00 CR3: 00000001e4a48000 CR4: 00000000003406a0 DR0: 0000000020000280 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess), 7 bytes skipped: 0: df 80 3c 03 00 74 filds 0x7400033c(%rax) 6: 08 4c 89 ff or %cl,-0x1(%rcx,%rcx,4) a: e8 25 4e 3f 00 call 0x3f4e34 f: 4d 8b 27 mov (%r15),%r12 12: 4c 89 e0 mov %r12,%rax 15: 48 c1 e8 03 shr $0x3,%rax 19: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 20: fc ff df * 23: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 27: 74 08 je 0x31 29: 4c 89 e7 mov %r12,%rdi 2c: e8 83 4e 3f 00 call 0x3f4eb4 31: 4d 89 2c 24 mov %r13,(%r12) 35: 4d 85 ed test %r13,%r13 38: 74 .byte 0x74