RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 000055556b03d7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 000000000002e140 R15: 00007ffda829f3b0 watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz-executor:5844] Modules linked in: irq event stamp: 1938674 hardirqs last enabled at (1938673): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:214 hardirqs last disabled at (1938674): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (1938672): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (1938672): [] handle_softirqs+0x5be/0x8e0 kernel/softirq.c:650 softirqs last disabled at (1938635): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (1938635): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (1938635): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 5844 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0xdfd/0x1600 kernel/smp.c:877 Code: 57 48 8b 54 24 10 4c 89 74 24 10 49 89 d5 48 89 d5 48 89 54 24 18 49 c1 ed 03 83 e5 07 4d 01 e5 83 c5 03 e8 a5 0d 0c 00 f3 90 <41> 0f b6 45 00 40 38 c5 7c 08 84 c0 0f 85 e0 05 00 00 8b 43 08 31 RSP: 0018:ffffc900040ef728 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b8442680 RCX: ffffffff81b13c81 RDX: ffff888033c25ac0 RSI: ffffffff81b13c5b RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffed10170884d1 R14: 0000000000000001 R15: 0000000000000000 FS: 000055556b03d500(0000) GS:ffff888124ad2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30f23ffc CR3: 00000000588cf000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1043 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline] flush_tlb_multi arch/x86/mm/tlb.c:1381 [inline] flush_tlb_mm_range+0x4a0/0x17a0 arch/x86/mm/tlb.c:1471 dup_mmap+0xf9a/0x2280 mm/mmap.c:1873 dup_mm kernel/fork.c:1489 [inline] copy_mm kernel/fork.c:1541 [inline] copy_process+0x3f0c/0x76a0 kernel/fork.c:2181 kernel_clone+0xfc/0x930 kernel/fork.c:2609 __do_sys_clone+0xce/0x120 kernel/fork.c:2750 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcb43985713 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffda829f218 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcb43985713 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 000055556b03d7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 000000000002e140 R15: 00007ffda829f3b0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 1147 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: events_unbound fsnotify_connector_destroy_workfn RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: 26 79 56 00 48 89 df 5b e9 ed 27 5c 00 be 03 00 00 00 5b e9 a2 37 ed 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 34 24 65 48 8b 15 08 96 e7 11 65 8b 05 19 96 e7 RSP: 0018:ffffc90000007e10 EFLAGS: 00000046 RAX: 0000000080010001 RBX: ffff8880b8427e80 RCX: 0000000000000000 RDX: ffff8880279cdac0 RSI: ffffffff81a9ab5d RDI: 0000000000000001 RBP: ffff888032e30340 R08: 0000000000000000 R09: fffff52000000fa8 R10: ffffffff9ad80a0b R11: ffffffff9ad80a08 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888032e30340 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881249d2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3130cff8 CR3: 0000000076dba000 CR4: 0000000000350ef0 Call Trace: trace_hrtimer_start include/trace/events/timer.h:222 [inline] debug_activate kernel/time/hrtimer.c:478 [inline] enqueue_hrtimer+0x32/0x3b0 kernel/time/hrtimer.c:1081 __run_hrtimer kernel/time/hrtimer.c:1794 [inline] __hrtimer_run_queues+0x8ff/0xad0 kernel/time/hrtimer.c:1841 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1903 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline] __sysvec_apic_timer_interrupt+0x10b/0x3f0 arch/x86/kernel/apic/apic.c:1058 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:srso_alias_safe_ret+0x0/0x7 arch/x86/lib/retpoline.S:210 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <48> 8d 64 24 08 c3 cc e8 f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc RSP: 0018:ffffc90003c5fc40 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff888027863700 RCX: ffffffff81842d06 RDX: ffff8880279cdac0 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffffff8e5f7220 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffffffff9083a334 R15: ffffc90003c5fd00 srso_alias_return_thunk+0x5/0xfbef5 arch/x86/lib/retpoline.S:220 trace_workqueue_execute_start include/trace/events/workqueue.h:84 [inline] process_one_work+0x13d6/0x1b70 kernel/workqueue.c:3262 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245