------------[ cut here ]------------ WARNING: CPU: 0 PID: 8369 at kernel/workqueue.c:1726 is_chained_work kernel/workqueue.c:1672 [inline] WARNING: CPU: 0 PID: 8369 at kernel/workqueue.c:1726 __queue_work+0xd49/0x1020 kernel/workqueue.c:1725 Modules linked in: CPU: 0 PID: 8369 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__queue_work+0xd49/0x1020 kernel/workqueue.c:1725 Code: 4c 89 f7 48 89 de 89 e9 e8 d4 e3 00 00 48 8b 5c 24 10 e9 10 ff ff ff e8 95 1b 2f 00 eb 0c e8 8e 1b 2f 00 eb 05 e8 87 1b 2f 00 <0f> 0b 48 83 c4 78 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 71 1b 2f 00 RSP: 0018:ffffc90000007b10 EFLAGS: 00010046 RAX: ffffffff81566f3b RBX: 0000000000000100 RCX: ffff8880239fda00 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffff8880630e11c0 R08: ffffffff8e4a856f R09: 1ffffffff1c950ad R10: dffffc0000000000 R11: fffffbfff1c950ae R12: 0000000000000008 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880630e1000 FS: 000055557d5d7500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f10ead17d60 CR3: 000000005cacb000 CR4: 00000000003506f0 Call Trace: call_timer_fn+0x16e/0x530 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1746 [inline] __run_timers+0x558/0x7d0 kernel/time/timer.c:2022 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035 handle_softirqs+0x280/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:console_flush_all+0x889/0xd00 arch/x86/include/asm/irqflags.h:-1 Code: ed 01 00 00 e8 e8 31 1b 00 4d 85 ff 48 8b 5c 24 38 75 07 e8 d9 31 1b 00 eb 06 e8 d2 31 1b 00 fb 49 bf 00 00 00 00 00 fc ff df <48> 8b 44 24 50 42 0f b6 04 38 84 c0 0f 85 2f 02 00 00 80 3b 01 0f RSP: 0018:ffffc90004fe6da0 EFLAGS: 00000293 RAX: ffffffff816a58fe RBX: ffffc90004fe6f3f RCX: ffff8880239fda00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004fe6f10 R08: ffffffff90da7507 R09: 1ffffffff21b4ea0 R10: dffffc0000000000 R11: fffffbfff21b4ea1 R12: ffffffff8d4b47e0 R13: 1ffffffff19792f8 R14: ffffffff8d4b4838 R15: dffffc0000000000 console_unlock+0xae/0x340 kernel/printk/printk.c:3069 vprintk_emit+0x477/0x600 kernel/printk/printk.c:2341 _printk+0xd0/0x110 kernel/printk/printk.c:2366 caif_netlink_parms net/caif/chnl_net.c:425 [inline] ipcaif_newlink+0x1e5/0x4d0 net/caif/chnl_net.c:450 rtnl_newlink_create net/core/rtnetlink.c:3517 [inline] __rtnl_newlink net/core/rtnetlink.c:3737 [inline] rtnl_newlink+0x14d0/0x2020 net/core/rtnetlink.c:3750 rtnetlink_rcv_msg+0x7c7/0xf10 net/core/rtnetlink.c:6475 netlink_rcv_skb+0x216/0x480 net/netlink/af_netlink.c:2545 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8c1/0xbe0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x46a/0x620 net/socket.c:2201 __do_sys_sendto net/socket.c:2213 [inline] __se_sys_sendto net/socket.c:2209 [inline] __x64_sys_sendto+0xde/0xf0 net/socket.c:2209 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f10e9f90d5c Code: 2a 5f 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 70 5f 02 00 48 8b RSP: 002b:00007ffe999d64d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f10ead14620 RCX: 00007f10e9f90d5c RDX: 0000000000000038 RSI: 00007f10ead14670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe999d6524 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f10ead14670 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: ed in (%dx),%eax 1: 01 00 add %eax,(%rax) 3: 00 e8 add %ch,%al 5: e8 31 1b 00 4d call 0x4d001b3b a: 85 ff test %edi,%edi c: 48 8b 5c 24 38 mov 0x38(%rsp),%rbx 11: 75 07 jne 0x1a 13: e8 d9 31 1b 00 call 0x1b31f1 18: eb 06 jmp 0x20 1a: e8 d2 31 1b 00 call 0x1b31f1 1f: fb sti 20: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 27: fc ff df * 2a: 48 8b 44 24 50 mov 0x50(%rsp),%rax <-- trapping instruction 2f: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax 34: 84 c0 test %al,%al 36: 0f 85 2f 02 00 00 jne 0x26b 3c: 80 3b 01 cmpb $0x1,(%rbx) 3f: 0f .byte 0xf