------------[ cut here ]------------ WARNING: CPU: 1 PID: 5095 at kernel/workqueue.c:1728 __queue_work+0xdc6/0x11d0 kernel/workqueue.c:1727 Modules linked in: CPU: 1 PID: 5095 Comm: syz-executor.2 Not tainted 6.8.0-rc1-syzkaller-00356-g8a696a29c690 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:__queue_work+0xdc6/0x11d0 kernel/workqueue.c:1727 Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 a3 c9 89 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 74 f2 31 00 85 db 75 56 e8 fb f6 31 00 90 <0f> 0b 90 e9 ac f8 ff ff e8 ed f6 31 00 90 0f 0b 90 e9 5b f8 ff ff RSP: 0018:ffffc900001f0c28 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000100 RCX: ffffffff81562c6c RDX: ffff88807c3e3b80 RSI: ffffffff81562cc5 RDI: 0000000000000005 RBP: ffff88807dbfcc58 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000000 R12: ffff88807dbfcc10 R13: 0000000080000101 R14: ffffffff81563620 R15: ffff88801f161c00 FS: 0000555555e15480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb3013a3200 CR3: 000000007c307000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x193/0x590 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1746 [inline] __run_timers+0x57a/0xaa0 kernel/time/timer.c:2038 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2051 __do_softirq+0x21a/0x8de kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__sanitizer_cov_trace_switch+0x6/0x90 kernel/kcov.c:317 Code: 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 07 00 00 00 e9 88 fe ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 56 <41> 55 41 54 49 89 fc 55 48 89 f5 53 48 8b 46 08 48 83 f8 20 74 63 RSP: 0018:ffffc90004337328 EFLAGS: 00000206 RAX: 0000000000000000 RBX: ffffc900043373b8 RCX: 0000000000000001 RDX: 0000000000000005 RSI: ffffffff8ac9cd20 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000001 R12: ffffffff9051bade R13: 0000000000000015 R14: ffffffff9051bae2 R15: ffffc900043373ed unwind_next_frame+0x6b5/0x2390 arch/x86/kernel/unwind_orc.c:515 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:314 [inline] __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc_node+0x177/0x340 mm/slub.c:3903 kmalloc_reserve+0x166/0x260 net/core/skbuff.c:560 __alloc_skb+0x12b/0x330 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1296 [inline] nlmsg_new include/net/netlink.h:1010 [inline] netlink_ack+0x3bb/0x1380 net/netlink/af_netlink.c:2480 netlink_rcv_skb+0x345/0x440 net/netlink/af_netlink.c:2549 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x225/0x310 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f7ae027ea9c Code: 1a 51 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 60 51 02 00 48 8b RSP: 002b:00007f7ae04cf650 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f7ae0ed4620 RCX: 00007f7ae027ea9c RDX: 0000000000000040 RSI: 00007f7ae0ed4670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007f7ae04cf6a4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f7ae0ed4670 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: f3 0f 1e fa endbr64 8: 48 8b 0c 24 mov (%rsp),%rcx c: 48 89 f2 mov %rsi,%rdx f: 48 89 fe mov %rdi,%rsi 12: bf 07 00 00 00 mov $0x7,%edi 17: e9 88 fe ff ff jmp 0xfffffea4 1c: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 23: 00 24: f3 0f 1e fa endbr64 28: 41 56 push %r14 * 2a: 41 55 push %r13 <-- trapping instruction 2c: 41 54 push %r12 2e: 49 89 fc mov %rdi,%r12 31: 55 push %rbp 32: 48 89 f5 mov %rsi,%rbp 35: 53 push %rbx 36: 48 8b 46 08 mov 0x8(%rsi),%rax 3a: 48 83 f8 20 cmp $0x20,%rax 3e: 74 63 je 0xa3