RBP: 00007fc6b0413f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc6b05e6038 R14: 00007fc6b05e5fa0 R15: 00007ffcba5a85a8 watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz.3.4085:28352] Modules linked in: irq event stamp: 690468 hardirqs last enabled at (690467): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:214 hardirqs last disabled at (690468): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (690462): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (690462): [] handle_softirqs+0x5be/0x8e0 kernel/softirq.c:650 softirqs last disabled at (690441): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (690441): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (690441): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 28352 Comm: syz.3.4085 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+0xe02/0x1600 kernel/smp.c:877 Code: 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 75 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 ff 83 e0 01 41 RSP: 0018:ffffc9000b72fb40 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880b8442680 RCX: ffffc90016eaf000 RDX: 0000000000080000 RSI: ffffffff81b0da1b RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000 R13: ffffed10170884d1 R14: 0000000000000001 R15: 0000000000000000 FS: 00007fc6ae5f66c0(0000) GS:ffff888124b06000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c41e3da CR3: 00000000807a0000 CR4: 0000000000350ef0 Call Trace: clock_was_set+0x642/0x870 kernel/time/hrtimer.c:969 do_settimeofday64+0x364/0x550 kernel/time/timekeeping.c:1460 do_sys_settimeofday64+0x1dc/0x260 kernel/time/time.c:195 __do_sys_clock_settime kernel/time/posix-timers.c:1131 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1115 [inline] __x64_sys_clock_settime+0x1c1/0x2a0 kernel/time/posix-timers.c:1115 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: 0033:0x7fc6b038f749 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:00007fc6ae5f6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007fc6b05e5fa0 RCX: 00007fc6b038f749 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000 RBP: 00007fc6b0413f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc6b05e6038 R14: 00007fc6b05e5fa0 R15: 00007ffcba5a85a8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 27417 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_preemption_disabled+0xf/0xe0 lib/smp_processor_id.c:16 Code: 0f 0b 90 e9 53 fc ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 54 55 53 48 83 ec 08 65 8b 1d f5 95 42 08 <65> 8b 05 ea 95 42 08 a9 ff ff ff 7f 74 0f 48 83 c4 08 89 d8 5b 5d RSP: 0018:ffffc90000007d78 EFLAGS: 00000096 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8bf07940 RDI: ffffffff8bf07980 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f363ba5c880(0000) GS:ffff888124a06000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4eec7e7dac CR3: 000000004d206000 CR4: 0000000000350ef0 Call Trace: rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:751 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x2cd/0x350 kernel/locking/lockdep.c:5831 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170 __run_hrtimer kernel/time/hrtimer.c:1781 [inline] __hrtimer_run_queues+0x2bc/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:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5872 Code: d6 08 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 22 85 e9 0e 0f 82 74 02 00 00 8b 35 7a b5 e9 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 39 d6 08 12 0f 85 c7 02 00 00 48 83 c4 RSP: 0018:ffffc9000490f630 EFLAGS: 00000206 RAX: 0000000000000046 RBX: ffff88804cf863d0 RCX: ffffffff93ae4660 RDX: 0000000000000000 RSI: ffffffff8da05443 RDI: ffffffff8bf079c0 RBP: 0000000000000000 R08: 12ee0ab804a05bdf R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 down_write+0x92/0x200 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:980 [inline] process_measurement+0x6c4/0x23e0 security/integrity/ima/ima_main.c:280 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:633 security_file_post_open+0x8e/0x210 security/security.c:3199 do_open fs/namei.c:3977 [inline] path_openat+0x1404/0x2cb0 fs/namei.c:4134 do_filp_open+0x20b/0x470 fs/namei.c:4161 do_sys_openat2+0x11b/0x1d0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1463 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: 0033:0x7f363b2a7407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffc172b6760 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f363ba5c880 RCX: 00007f363b2a7407 RDX: 0000000000080241 RSI: 00007ffc172b6cc0 RDI: ffffffffffffff9c RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000001b6 R11: 0000000000000202 R12: 000055acf20b0dfc R13: 000055acf20b0dfc R14: 0000000000000001 R15: 000055acf20cb140