watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.2.78:6176] Modules linked in: irq event stamp: 13352975 hardirqs last enabled at (13352974): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:214 hardirqs last disabled at (13352975): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (53868): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (53868): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (53868): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (53871): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (53871): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (53871): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 6176 Comm: syz.2.78 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:kasan_byte_accessible+0x0/0x30 mm/kasan/generic.c:204 Code: ff ff 0f b6 d2 e8 d0 ee ff ff 34 01 e9 1c ff ff ff 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 07 RSP: 0018:ffffc90000a08010 EFLAGS: 00000246 RAX: ffff888033788800 RBX: ffffffff8abdccd9 RCX: 0000000000007800 RDX: 0000000000000000 RSI: ffff888033788800 RDI: ffff888033788800 RBP: 0000000000212008 R08: ffffffff8f9e1177 R09: 1ffffffff1f3c22e R10: dffffc0000000000 R11: fffffbfff1f3c22f R12: ffffea0000cde200 R13: 0000000000000000 R14: ffff888033788800 R15: ffff88813ffa6dc0 FS: 00007efd145f66c0(0000) GS:ffff888125e0c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c27d42a CR3: 00000000280b0000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: check_slab_allocation+0xb9/0x130 mm/kasan/common.c:233 kasan_slab_pre_free include/linux/kasan.h:198 [inline] slab_free_hook mm/slub.c:2468 [inline] slab_free mm/slub.c:6611 [inline] kfree+0x148/0x6d0 mm/slub.c:6818 ieee80211_inform_bss+0xbd9/0x10a0 net/mac80211/scan.c:160 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xd05/0x1ac0 net/wireless/scan.c:2385 cfg80211_inform_bss_data+0x203/0x3b40 net/wireless/scan.c:3240 cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3331 ieee80211_bss_info_update+0x749/0x9e0 net/mac80211/scan.c:226 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355 __ieee80211_rx_handle_packet net/mac80211/rx.c:5194 [inline] ieee80211_rx_list+0x210c/0x2b90 net/mac80211/rx.c:5447 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5470 ieee80211_rx include/net/mac80211.h:5214 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453 tasklet_action_common+0x36c/0x580 kernel/softirq.c:925 handle_softirqs+0x286/0x870 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7256 Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 ab f4 42 f6 e8 36 c7 7a f6 fb bf 01 00 00 00 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc9000c11f960 EFLAGS: 00000286 RAX: 74dc6e964ab06600 RBX: 0000000000000000 RCX: 74dc6e964ab06600 RDX: 0000000000000000 RSI: ffffffff8d7e835a RDI: 0000000000000001 RBP: ffffc9000c11fa00 R08: ffffffff8f9e1177 R09: 1ffffffff1f3c22e R10: dffffc0000000000 R11: fffffbfff1f3c22f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001823f2c irqentry_exit+0x6f/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__rcu_read_unlock+0x6/0xe0 kernel/rcu/tree_plugin.h:431 Code: c1 03 38 c1 7c dc 48 89 df e8 26 ac 7e 00 eb d2 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 <41> 56 41 55 41 54 53 49 bf 00 00 00 00 00 fc ff df 65 48 8b 3c 25 RSP: 0018:ffffc9000c11fac0 EFLAGS: 00000246 RAX: 74dc6e964ab06600 RBX: ffffffff8b4a6da0 RCX: 74dc6e964ab06600 RDX: 0000000000000000 RSI: ffffffff8d9d1510 RDI: ffffffff8bc076e0 RBP: 0000000000000001 R08: ffff888024b05ac0 R09: 0000000000000002 R10: 0000000000000406 R11: 0000000000000002 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff8880792de400 R15: ffffc9000c11fad0 rcu_read_unlock include/linux/rcupdate.h:899 [inline] xa_load+0x1ea/0x210 lib/xarray.c:1621 memcg_list_lru_allocated mm/list_lru.c:510 [inline] memcg_list_lru_alloc+0x12f/0x7e0 mm/list_lru.c:521 __memcg_slab_post_alloc_hook+0x13c/0x7d0 mm/memcontrol.c:3162 memcg_slab_post_alloc_hook mm/slub.c:2322 [inline] slab_post_alloc_hook mm/slub.c:4966 [inline] slab_alloc_node mm/slub.c:5265 [inline] kmem_cache_alloc_lru_noprof+0x410/0x6d0 mm/slub.c:5284 sock_alloc_inode+0x28/0xc0 net/socket.c:322 alloc_inode+0x6a/0x1b0 fs/inode.c:346 new_inode_pseudo include/linux/fs.h:3395 [inline] sock_alloc net/socket.c:637 [inline] __sock_create+0x12d/0x9f0 net/socket.c:1569 sock_create net/socket.c:1663 [inline] __sys_socket_create net/socket.c:1700 [inline] __sys_socket+0xd7/0x1b0 net/socket.c:1747 __do_sys_socket net/socket.c:1761 [inline] __se_sys_socket net/socket.c:1759 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1759 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efd1638eec9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007efd145f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007efd165e5fa0 RCX: 00007efd1638eec9 RDX: 0000000000000088 RSI: 0000000000000002 RDI: 000000000000000a RBP: 00007efd16411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007efd165e6038 R14: 00007efd165e5fa0 R15: 00007ffe79b95fe8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6199 Comm: kworker/u8:9 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0xd33/0x12d0 kernel/smp.c:877 Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 96 73 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 41 6f 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 25 6f RSP: 0018:ffffc9000411f640 EFLAGS: 00000293 RAX: ffffffff81b4d4cb RBX: 1ffff110170e7ffd RCX: ffff88801e3edac0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000411f7c0 R08: ffffffff8f9e1177 R09: 1ffffffff1f3c22e R10: dffffc0000000000 R11: fffffbfff1f3c22f R12: ffff8880b873ffe8 R13: dffffc0000000000 R14: ffff8880b863b240 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888125d0c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560006ebb028 CR3: 000000000df38000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 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:2713 [inline] smp_text_poke_batch_finish+0x5f9/0x1130 arch/x86/kernel/alternative.c:2923 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x128/0x250 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xad/0x240 mm/kfence/core.c:852 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245