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: 617 Comm: syz.1.74 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 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+0x74b/0xb60 kernel/time/timer.c:1817 Code: 89 ef e8 88 d8 3c 00 4d 89 65 00 4d 85 e4 74 2e e8 aa dd 0e 00 49 83 c4 08 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 57 d8 3c 00 4d 89 2c 24 eb 05 e8 7c RSP: 0018:ffff8881f6f09d40 EFLAGS: 00010007 RAX: 000000001c6c0039 RBX: 1ffff1103cebd639 RCX: dffffc0000000000 RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f6f09cc0 RBP: ffff8881f6f09eb8 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000e36001cc R13: ffff8881f6f09e00 R14: ffff8881e75eb1c8 R15: 1ffff1103cebd638 FS: 00007f5b8173e6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d7cbb2070 CR3: 00000001e8cc8000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1830 __do_softirq+0x236/0x660 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x197/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:539 [inline] smp_apic_timer_interrupt+0x11d/0x490 arch/x86/kernel/apic/apic.c:1161 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834 RIP: 0010:__read_once_size include/linux/compiler.h:268 [inline] RIP: 0010:inet_twsk_purge+0x10f/0x630 net/ipv4/inet_timewait_sock.c:270 Code: eb 19 e8 94 8c d7 fd 48 8b 7c 24 18 e8 ca f4 ff ff e8 35 05 00 00 4c 8b 74 24 40 e8 7b 44 c6 fd 48 8b 44 24 68 42 80 3c 28 00 <74> 08 4c 89 f7 e8 97 86 05 fe 4d 8b 26 4c 89 e6 48 83 e6 01 31 ff RSP: 0018:ffff8881e4937860 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff1103ebd53b6 RBX: ffffffff86dfad80 RCX: dffffc0000000000 RDX: ffffc90000d45000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffff8881e4937980 R08: dffffc0000000000 R09: fffffbfff0c576a6 R10: fffffbfff0c576a6 R11: 1ffffffff0c576a5 R12: 00000000000053b5 R13: dffffc0000000000 R14: ffff8881f5ea9db0 R15: 0000000000000001 tcpv6_net_exit_batch+0x1a/0x20 net/ipv6/tcp_ipv6.c:2109 ops_exit_list net/core/net_namespace.c:187 [inline] setup_net+0x638/0x9b0 net/core/net_namespace.c:371 copy_net_ns+0x314/0x520 net/core/net_namespace.c:489 create_new_namespaces+0x49c/0x590 kernel/nsproxy.c:103 copy_namespaces+0x17e/0x1c0 kernel/nsproxy.c:161 copy_process+0x1194/0x2cf0 kernel/fork.c:2055 _do_fork+0x190/0x860 kernel/fork.c:2399 __do_sys_clone kernel/fork.c:2557 [inline] __se_sys_clone kernel/fork.c:2538 [inline] __x64_sys_clone+0x12e/0x160 kernel/fork.c:2538 do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f5b830d5969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5b8173dfe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f5b832fcfa0 RCX: 00007f5b830d5969 RDX: 0000200000000300 RSI: 0000000000000000 RDI: 0000000042100000 RBP: 00007f5b83157ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5b832fcfa0 R15: 00007fff6f220428 Modules linked in: ---[ end trace 20d35dd01a8a87d7 ]--- 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+0x74b/0xb60 kernel/time/timer.c:1817 Code: 89 ef e8 88 d8 3c 00 4d 89 65 00 4d 85 e4 74 2e e8 aa dd 0e 00 49 83 c4 08 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 57 d8 3c 00 4d 89 2c 24 eb 05 e8 7c RSP: 0018:ffff8881f6f09d40 EFLAGS: 00010007 RAX: 000000001c6c0039 RBX: 1ffff1103cebd639 RCX: dffffc0000000000 RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f6f09cc0 RBP: ffff8881f6f09eb8 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000e36001cc R13: ffff8881f6f09e00 R14: ffff8881e75eb1c8 R15: 1ffff1103cebd638 FS: 00007f5b8173e6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d7cbb2070 CR3: 00000001e8cc8000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 ef mov %ebp,%edi 2: e8 88 d8 3c 00 call 0x3cd88f 7: 4d 89 65 00 mov %r12,0x0(%r13) b: 4d 85 e4 test %r12,%r12 e: 74 2e je 0x3e 10: e8 aa dd 0e 00 call 0xeddbf 15: 49 83 c4 08 add $0x8,%r12 19: 4c 89 e0 mov %r12,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 e7 mov %r12,%rdi 33: e8 57 d8 3c 00 call 0x3cd88f 38: 4d 89 2c 24 mov %r13,(%r12) 3c: eb 05 jmp 0x43 3e: e8 .byte 0xe8 3f: 7c .byte 0x7c