watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.3.2462:13788] Modules linked in: irq event stamp: 12070571 hardirqs last enabled at (12070570): [] irqentry_exit+0x59c/0x620 kernel/entry/common.c:219 hardirqs last disabled at (12070571): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (5982): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (5982): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (5982): [] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 softirqs last disabled at (5985): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (5985): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (5985): [] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 13788 Comm: syz.3.2462 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:228 [inline] RIP: 0010:unwind_next_frame+0x214/0x23c0 arch/x86/kernel/unwind_orc.c:510 Code: ef 08 8b 15 ce 9e 51 0c 8d 42 ff 44 39 f8 0f 86 78 04 00 00 44 89 f8 4c 8d 2c 85 c4 71 02 91 4c 89 e8 48 c1 e8 03 0f b6 04 28 <84> c0 48 89 eb 0f 85 25 1c 00 00 45 8b 6d 00 44 89 f8 ff c0 48 8d RSP: 0018:ffffc90000a08618 EFLAGS: 00000a03 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000100 RDX: 00000000000a7935 RSI: ffffffff8be094c0 RDI: ffffffff8be09480 RBP: dffffc0000000000 R08: ffffffff8174a315 R09: ffffffff8e341b20 R10: ffffc90000a08208 R11: fffff52000141043 R12: ffffffff8174cc06 R13: ffffffff910444f4 R14: ffffc90000a08748 R15: 00000000000074cc FS: 00007ff7446ea6c0(0000) GS:ffff888125b0b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fefec1456b8 CR3: 000000007ccd4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __unwind_start+0x5b8/0x760 arch/x86/kernel/unwind_orc.c:773 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6670 [inline] kmem_cache_free+0x195/0x610 mm/slub.c:6781 __ieee80211_rx_handle_packet net/mac80211/rx.c:-1 [inline] ieee80211_rx_list+0x269e/0x3050 net/mac80211/rx.c:5544 ieee80211_rx_napi+0x1b1/0x3e0 net/mac80211/rx.c:5567 ieee80211_rx include/net/mac80211.h:5216 [inline] ieee80211_handle_queued_frames+0xe8/0x1e0 net/mac80211/main.c:452 tasklet_action_common+0x2da/0x4b0 kernel/softirq.c:925 handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:preempt_schedule_irq+0x48/0xa0 kernel/sched/core.c:7190 Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 43 1b 1b f6 e8 5e aa 53 f6 fb bf 01 00 00 00 e3 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 e4 ab 53 f6 bf 01 RSP: 0018:ffffc9000ccef910 EFLAGS: 00000206 RAX: 000000000000175f RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8d9b8102 RDI: 0000000000000001 RBP: 0000000000000000 R08: ffffffff8fc25a77 R09: 1ffffffff1f84b4e R10: dffffc0000000000 R11: fffffbfff1f84b4f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 irqentry_exit+0x597/0x620 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:memset_orig+0x33/0xb0 arch/x86/lib/memset_64.S:69 Code: 01 01 01 01 01 01 01 01 48 0f af c1 41 89 f9 41 83 e1 07 75 74 48 89 d1 48 c1 e9 06 74 39 66 0f 1f 84 00 00 00 00 00 48 ff c9 <48> 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47 RSP: 0018:ffffc9000ccefa38 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000d40 RCX: 0000000000000000 RDX: 0000000000000200 RSI: 0000000000000000 RDI: ffffc9000ccefc00 RBP: ffffc9000ccefc70 R08: 0000000000000002 R09: 0000000000000000 R10: ffffc9000ccefa40 R11: fffff5200199df13 R12: 0000000000000050 R13: ffff88802ea4b930 R14: ffff88802ea4b980 R15: ffffc9000ccefa40 kasan_save_stack mm/kasan/common.c:54 [inline] kasan_save_track+0x2f/0x80 mm/kasan/common.c:78 unpoison_slab_object mm/kasan/common.c:340 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x370/0x6e0 mm/slub.c:5270 lsm_inode_alloc security/security.c:228 [inline] security_inode_alloc+0x39/0x310 security/security.c:1189 inode_init_always_gfp+0x9ed/0xdc0 fs/inode.c:306 inode_init_always include/linux/fs.h:2883 [inline] alloc_inode+0x82/0x1b0 fs/inode.c:353 new_inode_pseudo include/linux/fs.h:2964 [inline] sock_alloc net/socket.c:637 [inline] __sock_create+0x12d/0x9d0 net/socket.c:1569 sock_create net/socket.c:1663 [inline] __sys_socketpair+0x239/0x560 net/socket.c:1814 __do_sys_socketpair net/socket.c:1863 [inline] __se_sys_socketpair net/socket.c:1860 [inline] __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1860 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff74379acb9 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:00007ff7446ea028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007ff743a15fa0 RCX: 00007ff74379acb9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000001e RBP: 00007ff743808bf7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000a80 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff743a16038 R14: 00007ff743a15fa0 R15: 00007ffef14e5198 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 4187 Comm: kworker/u8:14 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0xce5/0x1270 kernel/smp.c:877 Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 94 b4 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 3f b0 0b 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 23 b0 RSP: 0018:ffffc9000d5176a0 EFLAGS: 00000293 RAX: ffffffff81b6c39d RBX: 1ffff110170e8129 RCX: ffff888031e93d00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000d5177e0 R08: ffffffff8fc25a77 R09: 1ffffffff1f84b4e R10: dffffc0000000000 R11: fffffbfff1f84b4f R12: ffff8880b8740948 R13: dffffc0000000000 R14: ffff8880b863bb00 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888125a0b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556182b4e8 CR3: 000000000e13a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1043 on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2711 [inline] smp_text_poke_batch_finish+0x5f5/0x1160 arch/x86/kernel/alternative.c:2921 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x128/0x240 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xab/0x250 mm/kfence/core.c:874 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340 worker_thread+0x89f/0xd90 kernel/workqueue.c:3421 kthread+0x726/0x8b0 kernel/kthread.c:463 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246