watchdog: BUG: soft lockup - CPU#0 stuck for 111s! [syz.7.6946:1653] Modules linked in: irq event stamp: 556148 hardirqs last enabled at (556147): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 hardirqs last disabled at (556148): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1088 softirqs last enabled at (556142): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last enabled at (556142): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last enabled at (556142): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 softirqs last disabled at (556087): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last disabled at (556087): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (556087): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 CPU: 0 PID: 1653 Comm: syz.7.6946 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline] RIP: 0010:smp_call_function_many_cond+0xdfe/0x1140 kernel/smp.c:855 Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 cb f5 0a 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 06 f2 0a 00 eb 38 f3 90 <42> 0f b6 04 2b 84 c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 ea f1 RSP: 0018:ffffc900116dfa80 EFLAGS: 00000246 RAX: ffffffff817c3166 RBX: 1ffff110171e826d RCX: 0000000000080000 RDX: ffffc900119e6000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc900116dfbf0 R08: ffffffff8e8b19af R09: 1ffffffff1d16335 R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffff8880b8f41368 R13: dffffc0000000000 R14: ffff8880b8e3d148 R15: 0000000000000001 FS: 00007f8d073cb6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f91cff8 CR3: 0000000059c71000 CR4: 00000000003506f0 Call Trace: clock_was_set+0x71f/0x7d0 kernel/time/hrtimer.c:997 do_settimeofday64+0x5ba/0x760 kernel/time/timekeeping.c:1345 __do_sys_clock_settime kernel/time/posix-timers.c:1130 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1114 [inline] __x64_sys_clock_settime+0x25e/0x2a0 kernel/time/posix-timers.c:1114 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8d0659ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8d073cb028 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007f8d06816090 RCX: 00007f8d0659ce59 RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000 RBP: 00007f8d06632d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8d06816128 R14: 00007f8d06816090 R15: 00007ffec30a8558 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1644 Comm: syz.5.6942 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:lookup_object lib/debugobjects.c:196 [inline] RIP: 0010:debug_object_deactivate+0xbb/0x390 lib/debugobjects.c:766 Code: 00 00 00 4d 85 ed 74 49 45 31 f6 eb 0c 4d 8b 6d 00 41 ff c6 4d 85 ed 74 38 49 8d 5d 18 48 89 dd 48 c1 ed 03 42 80 7c 25 00 00 <74> 08 48 89 df e8 4b 1b ae fd 4c 39 3b 74 41 4c 89 e8 48 c1 e8 03 RSP: 0000:ffffc9001182fc28 EFLAGS: 00000046 RAX: 1ffffffff2e94846 RBX: ffff88805f6586a8 RCX: 0000000000000001 RDX: ffffffff974a4240 RSI: 0000000000000004 RDI: ffffc9001182fb00 RBP: 1ffff1100becb0d5 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52002305f60 R12: dffffc0000000000 R13: ffff88805f658690 R14: 0000000000000000 R15: ffff88804f001340 FS: 000055557484b500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2e3ce5 CR3: 0000000030b23000 CR4: 00000000003506e0 Call Trace: debug_hrtimer_deactivate kernel/time/hrtimer.c:455 [inline] __run_hrtimer kernel/time/hrtimer.c:1718 [inline] __hrtimer_run_queues+0x2cb/0xc40 kernel/time/hrtimer.c:1814 hrtimer_interrupt+0x3c9/0x9c0 kernel/time/hrtimer.c:1876 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1077 [inline] __sysvec_apic_timer_interrupt+0xfb/0x3b0 arch/x86/kernel/apic/apic.c:1094 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0x51/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0033:0x7f93aea71584 Code: 85 19 01 00 00 be 08 00 00 00 4c 89 ff 83 c5 01 e8 e1 93 fe ff 49 8b 47 40 41 83 47 30 08 48 8d 48 f8 49 89 4f 40 48 89 58 f8 <49> 83 c5 01 45 3b 6c 24 04 0f 82 fd fe ff ff 41 80 7f 60 00 0f 84 RSP: 002b:00007fffc0521fc0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff842904e9 RCX: ffffffff842904e9 RDX: 00000000000004e9 RSI: ffffffff842904e9 RDI: 0000000000000011 RBP: 0000000000000000 R08: 00007f93aee00000 R09: 00007f93aee02000 R10: 00000000842904ed R11: 0000000000000011 R12: 00007f93aee16038 R13: 000000000000ab61 R14: ffffffff8429070b R15: 00007f93af945720