watchdog: BUG: soft lockup - CPU#0 stuck for 244s! [syz.7.2600:17165] Modules linked in: irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x288a/0x7ff0 kernel/fork.c:2232 softirqs last enabled at (0): [] copy_process+0x28de/0x7ff0 kernel/fork.c:2233 softirqs last disabled at (0): [<0000000000000000>] 0x0 CPU: 0 UID: 0 PID: 17165 Comm: syz.7.2600 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0x58e/0x16c0 kernel/smp.c:892 Code: 00 fc ff df 48 8b 54 24 08 49 89 d5 49 89 d4 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 e8 29 93 0c 00 f3 90 41 0f b6 45 00 <41> 38 c4 7c 08 84 c0 0f 85 2c 0f 00 00 8b 45 08 31 ff 83 e0 01 41 RSP: 0018:ffffc9000351fa00 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90026cf2000 RDX: 0000000000080000 RSI: ffffffff81fccc17 RDI: ffff888037da1f00 RBP: ffff8880b85411c0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003 R13: ffffed10170a8239 R14: 0000000000000001 R15: ffff8880b843c840 FS: 00007f378a0d46c0(0000) GS:ffff888124326000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f378a0d3ff8 CR3: 0000000079191000 CR4: 0000000000350ef0 Call Trace: clock_was_set+0x61c/0x850 kernel/time/hrtimer.c:999 do_adjtimex+0x302/0x370 kernel/time/timekeeping.c:3005 do_clock_adjtime kernel/time/posix-timers.c:1169 [inline] __do_sys_clock_adjtime+0x177/0x290 kernel/time/posix-timers.c:1181 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f378919ce59 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:00007f378a0d4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007f3789416270 RCX: 00007f378919ce59 RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000000 RBP: 00007f3789232e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3789416308 R14: 00007f3789416270 R15: 00007ffde14e2718 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 17163 Comm: syz.7.2600 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:2001 [inline] RIP: 0010:__hrtimer_run_queues+0x30a/0x9c0 kernel/time/hrtimer.c:2096 Code: 8b 4c 89 e7 e8 a7 5b 11 03 48 8b 44 24 20 48 8b 0c 24 48 83 c0 02 48 c1 e0 07 4c 8d 7c 01 10 4c 89 f8 48 c1 e8 03 80 3c 18 00 <0f> 85 a9 05 00 00 48 8b 44 24 08 4c 89 a0 10 01 00 00 49 8d 46 10 RSP: 0018:ffffc90000a08e98 EFLAGS: 00000046 RAX: 1ffff110170a50b2 RBX: dffffc0000000000 RCX: ffff8880b8528400 RDX: 0000000000010002 RSI: 0000000000000004 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff368d98e R10: ffffffff9b46cc73 R11: 0000000000000001 R12: ffff88805c9ad300 R13: 0000000000000001 R14: ffff8880b8528540 R15: ffff8880b8528590 FS: 00007f378a1166c0(0000) GS:ffff888124426000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1eb05d1e9c CR3: 0000000079191000 CR4: 0000000000350ef0 Call Trace: hrtimer_interrupt+0x3e5/0x940 kernel/time/hrtimer.c:2215 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline] __sysvec_apic_timer_interrupt+0x109/0x470 arch/x86/kernel/apic/apic.c:1068 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0x9e/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:get_current arch/x86/include/asm/current.h:23 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xf/0x70 kernel/kcov.c:216 Code: 00 00 00 5b e9 52 fb f3 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 e5 40 06 12 48 8b 34 24 <65> 48 8b 15 c1 40 06 12 a9 00 01 ff 00 74 1b f6 c4 01 74 07 a9 00 RSP: 0018:ffffc900034cf840 EFLAGS: 00000286 RAX: 0000000080000000 RBX: 0000000000000000 RCX: ffffc90023c00000 RDX: 1ffff1100a61bc75 RSI: ffffffff81cfd791 RDI: ffff8880530de3a8 RBP: ffff88803674b800 R08: 0000000000000001 R09: ffffc900034cf938 R10: ffffc900034cf957 R11: 0000000000000000 R12: ffff8880378e6b90 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888034cfe640 pid_nr_ns kernel/pid.c:545 [inline] pid_vnr+0x51/0x220 kernel/pid.c:556 scm_set_cred include/net/scm.h:73 [inline] unix_skb_to_scm net/unix/af_unix.c:2000 [inline] __unix_dgram_recvmsg+0x5d9/0xc30 net/unix/af_unix.c:2633 unix_dgram_recvmsg+0xcd/0x100 net/unix/af_unix.c:2681 sock_recvmsg_nosec net/socket.c:1126 [inline] ____sys_recvmsg+0x5b3/0x640 net/socket.c:2902 ___sys_recvmsg+0x16a/0x1a0 net/socket.c:2946 do_recvmmsg+0x2f3/0x740 net/socket.c:3041 __sys_recvmmsg net/socket.c:3115 [inline] __do_sys_recvmmsg net/socket.c:3138 [inline] __se_sys_recvmmsg net/socket.c:3131 [inline] __x64_sys_recvmmsg+0x22a/0x280 net/socket.c:3131 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f378919ce59 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:00007f378a116028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f3789416090 RCX: 00007f378919ce59 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003 RBP: 00007f3789232e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3789416128 R14: 00007f3789416090 R15: 00007ffde14e2718