watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz.0.367:6727] Modules linked in: irq event stamp: 772 hardirqs last enabled at (771): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline] hardirqs last enabled at (771): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:221 hardirqs last disabled at (772): [] __el1_irq arch/arm64/kernel/entry-common.c:527 [inline] hardirqs last disabled at (772): [] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:543 softirqs last enabled at (764): [] softirq_handle_end kernel/softirq.c:491 [inline] softirqs last enabled at (764): [] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673 softirqs last disabled at (759): [] __do_softirq+0x14/0x20 kernel/softirq.c:679 CPU: 1 UID: 0 PID: 6727 Comm: syz.0.367 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline] pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:221 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline] lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:221 sp : ffff800092857940 x29: ffff800092857940 x28: 000000b30bf8ca00 x27: 0000000000000000 x26: 0000000000000003 x25: 0000000000000000 x24: ffff0001adcfa2e8 x23: ffff0001adcf9e40 x22: 1fffe00035b9f3d1 x21: dfff800000000000 x20: ffff0001adcf9e40 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff8000805791c4 x16: ffff8000805625d8 x15: ffff800080552000 x14: ffff80008a8a7000 x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008a6a6e28 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000008 x3 : ffff8000801561b4 x2 : 0000000000000007 x1 : ffff0000cb548000 x0 : ffff80012517a000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:221 (P) class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:596 [inline] clock_was_set+0x514/0x704 kernel/time/hrtimer.c:1000 do_adjtimex+0x208/0x2f0 kernel/time/timekeeping.c:3057 posix_clock_realtime_adj+0x20/0x30 kernel/time/posix-timers.c:207 do_clock_adjtime+0x120/0x140 kernel/time/posix-timers.c:1169 __do_sys_clock_adjtime kernel/time/posix-timers.c:1181 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1172 [inline] __arm64_sys_clock_adjtime+0x184/0x2b0 kernel/time/posix-timers.c:1172 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6730 Comm: syz.0.367 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : csd_lock_wait kernel/smp.c:363 [inline] pc : smp_call_function_many_cond+0xfec/0x1590 kernel/smp.c:1002 lr : csd_lock_wait kernel/smp.c:363 [inline] lr : smp_call_function_many_cond+0x1004/0x1590 kernel/smp.c:1002 sp : ffff800092837320 x29: ffff800092837460 x28: ffff800088bfa960 x27: 0000000000000011 x26: dfff800000000000 x25: 0000000000000001 x24: ffffffffffffffff x23: ffff800088bfa960 x22: 1fffe00035ba1a78 x21: ffff0001add37aa8 x20: ffff0000c9b39538 x19: ffff0001add0d3c0 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff800092837780 x14: 00000000ffff8000 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000080000 x9 : 0000000000000000 x8 : 0000000000000011 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000805bafd8 x2 : 0000000000000000 x1 : ffff0000c9b38000 x0 : 0000000000000001 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:233 [inline] (P) __cmpwait arch/arm64/include/asm/cmpxchg.h:259 [inline] (P) csd_lock_wait kernel/smp.c:363 [inline] (P) smp_call_function_many_cond+0xfec/0x1590 kernel/smp.c:1002 (P) smp_call_function kernel/smp.c:1043 [inline] kick_all_cpus_sync+0x34/0x40 kernel/smp.c:1192 flush_icache_range arch/arm64/include/asm/cacheflush.h:105 [inline] __text_poke+0xd8/0xf8 arch/arm64/kernel/patching.c:129 aarch64_insn_copy+0x3c/0x50 arch/arm64/kernel/patching.c:160 bpf_arch_text_copy+0x34/0x54 arch/arm64/net/bpf_jit_comp.c:2403 bpf_jit_binary_pack_finalize+0x44/0xf0 kernel/bpf/core.c:1248 bpf_int_jit_compile+0xd4c/0x1184 arch/arm64/net/bpf_jit_comp.c:2323 bpf_prog_jit_compile kernel/bpf/core.c:2639 [inline] __bpf_prog_select_runtime+0x3a0/0x728 kernel/bpf/core.c:2689 bpf_check+0x1b8c/0x243c kernel/bpf/verifier.c:21271 bpf_prog_load+0xf4c/0x1554 kernel/bpf/syscall.c:3133 __sys_bpf+0x7d4/0x82c kernel/bpf/syscall.c:6367 __do_sys_bpf kernel/bpf/syscall.c:6486 [inline] __se_sys_bpf kernel/bpf/syscall.c:6483 [inline] __arm64_sys_bpf+0xd0/0xec kernel/bpf/syscall.c:6483 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590