watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz.2.345:5140] Modules linked in: irq event stamp: 4934 hardirqs last enabled at (4933): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline] hardirqs last enabled at (4933): [] exit_to_kernel_mode+0x100/0x178 arch/arm64/kernel/entry-common.c:91 hardirqs last disabled at (4934): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (456): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (456): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (435): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (435): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (435): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (435): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 CPU: 1 PID: 5140 Comm: syz.2.345 Not tainted 5.15.164-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : csd_lock_wait kernel/smp.c:440 [inline] pc : smp_call_function_many_cond+0xa38/0x1044 kernel/smp.c:969 lr : csd_lock_wait kernel/smp.c:440 [inline] lr : smp_call_function_many_cond+0xa50/0x1044 kernel/smp.c:969 sp : ffff80001d1776b0 x29: ffff80001d177700 x28: 0000000000000000 x27: dfff800000000000 x26: 0000000000000011 x25: ffff0001b47e9980 x24: ffff800014ac0ff8 x23: 1fffe000368fd330 x22: ffff0001b47cf008 x21: ffff800014cada00 x20: 0000000000000000 x19: ffff0001b47e9988 x18: 0000000000000000 x17: 0000000000000002 x16: ffff800011ab8a28 x15: 0000000000000001 x14: ffff0000c22e0000 x13: 0000000000ff0100 x12: 0000000000040000 x11: 000000000003ffff x10: ffff800021d09000 x9 : 0000000000000000 x8 : 0000000000000011 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000004 x4 : 0000000000000000 x3 : ffff80000840e3e0 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:252 [inline] __cmpwait arch/arm64/include/asm/cmpxchg.h:278 [inline] csd_lock_wait kernel/smp.c:440 [inline] smp_call_function_many_cond+0xa38/0x1044 kernel/smp.c:969 smp_call_function_many kernel/smp.c:993 [inline] smp_call_function kernel/smp.c:1015 [inline] kick_all_cpus_sync+0x40/0xa0 kernel/smp.c:1159 flush_icache_range arch/arm64/include/asm/cacheflush.h:103 [inline] bpf_flush_icache arch/arm64/net/bpf_jit_comp.c:987 [inline] bpf_int_jit_compile+0x650/0xe1c arch/arm64/net/bpf_jit_comp.c:1110 bpf_prog_select_runtime+0x654/0x914 kernel/bpf/core.c:1930 bpf_prog_load+0xe9c/0x15c8 kernel/bpf/syscall.c:2357 __sys_bpf+0x2e8/0x610 kernel/bpf/syscall.c:4651 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline] __se_sys_bpf kernel/bpf/syscall.c:4753 [inline] __arm64_sys_bpf+0x80/0x98 kernel/bpf/syscall.c:4753 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584