watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.7.468:7825] Modules linked in: irq event stamp: 11277861 hardirqs last enabled at (11277860): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (11277861): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (11173098): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (11173098): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (11173098): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (11173101): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (11173101): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (11173101): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 7825 Comm: syz.7.468 Not tainted 6.16.0-rc6-syzkaller-g7abc678e3084 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:132 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x286/0x2c0 mm/kasan/generic.c:189 Code: 83 c3 02 eb 22 4d 01 f3 49 83 c3 03 eb 19 4d 01 f3 49 83 c3 04 eb 10 4d 01 f3 49 83 c3 05 eb 07 4d 01 f3 49 83 c3 06 4d 89 dc <4d> 85 db 0f 84 44 ff ff ff 4d 01 d1 4d 39 cc 75 11 41 83 e0 07 45 RSP: 0018:ffffc90000a071e0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: ffffffffffffffff RCX: ffffffff819d929a RDX: 0000000000000000 RSI: 000000000000000d RDI: ffffffff8b8bdd80 RBP: ffffc90000a07340 R08: ffffffff8b8bdd8c R09: 1ffffffff1717bb1 R10: dffffc0000000000 R11: fffffbfff1717bb1 R12: fffffbfff1717bb1 R13: 000000000000000e R14: fffffbfff1717bb2 R15: 1ffffffff1717bb0 FS: 00007f4052da56c0(0000) GS:ffff888125d23000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe219c52d58 CR3: 000000007fbb2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x28a/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5882 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4745 skb_ext_del include/linux/skbuff.h:4892 [inline] nf_bridge_info_free net/bridge/br_netfilter_hooks.c:156 [inline] br_nf_dev_queue_xmit+0x4fe/0x2680 net/bridge/br_netfilter_hooks.c:854 NF_HOOK+0x618/0x6b0 include/linux/netfilter.h:317 br_nf_post_routing+0xb66/0xfe0 net/bridge/br_netfilter_hooks.c:969 nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline] nf_hook_slow+0xc2/0x220 net/netfilter/core.c:623 nf_hook include/linux/netfilter.h:272 [inline] NF_HOOK+0x215/0x3c0 include/linux/netfilter.h:315 br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:66 br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:-1 [inline] br_nf_forward_finish+0xa40/0xe60 net/bridge/br_netfilter_hooks.c:665 NF_HOOK+0x618/0x6b0 include/linux/netfilter.h:317 br_nf_forward_ip+0x647/0x7e0 net/bridge/br_netfilter_hooks.c:719 nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline] nf_hook_slow+0xc2/0x220 net/netfilter/core.c:623 nf_hook include/linux/netfilter.h:272 [inline] NF_HOOK+0x215/0x3c0 include/linux/netfilter.h:315 __br_forward+0x41e/0x600 net/bridge/br_forward.c:115 br_handle_frame_finish+0x14b4/0x19b0 net/bridge/br_input.c:221 br_nf_hook_thresh+0x3c3/0x4a0 net/bridge/br_netfilter_hooks.c:-1 br_nf_pre_routing_finish_ipv6+0x948/0xd00 net/bridge/br_netfilter_ipv6.c:-1 NF_HOOK include/linux/netfilter.h:317 [inline] br_nf_pre_routing_ipv6+0x37e/0x6b0 net/bridge/br_netfilter_ipv6.c:184 nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline] nf_hook_bridge_pre net/bridge/br_input.c:283 [inline] br_handle_frame+0x982/0x14c0 net/bridge/br_input.c:434 __netif_receive_skb_core+0x10de/0x4180 net/core/dev.c:5863 __netif_receive_skb_one_core net/core/dev.c:5975 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6090 process_backlog+0x60e/0x14f0 net/core/dev.c:6442 __napi_poll+0xc7/0x480 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x707/0xe30 net/core/dev.c:7605 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__cant_migrate+0xc/0x2e0 kernel/sched/core.c:8835 Code: 44 89 ea 44 89 f6 eb a2 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00 00 65 48 8b 05 ec 3f RSP: 0018:ffffc9000f5cf6a0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc9000fb65000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 00000000000002bf RDI: ffffffff8d9e7e73 RBP: ffffc9000f5cf6b0 R08: ffffc9000f5cf74f R09: 0000000000000000 R10: ffffc9000f5cf740 R11: fffff52001eb9eea R12: 0000000000000001 R13: ffff888055dfd198 R14: ffff888055dfd1a8 R15: 0000000000000001 __bpf_prog_run include/linux/filter.h:703 [inline] bpf_prog_run include/linux/filter.h:725 [inline] bpf_prog_run_array include/linux/bpf.h:2235 [inline] trace_call_bpf+0x2e6/0x850 kernel/trace/bpf_trace.c:146 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10891 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5882 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] percpu_ref_put_many include/linux/percpu-refcount.h:337 [inline] percpu_ref_put+0xf9/0x180 include/linux/percpu-refcount.h:351 css_put include/linux/cgroup_refcnt.h:79 [inline] obj_cgroup_charge_pages+0x6e/0xa0 mm/memcontrol.c:2808 obj_cgroup_charge_account+0xcf/0x660 mm/memcontrol.c:3104 __memcg_slab_post_alloc_hook+0x3e6/0x7f0 mm/memcontrol.c:3190 memcg_slab_post_alloc_hook mm/slub.c:2180 [inline] slab_post_alloc_hook mm/slub.c:4158 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_lru_noprof+0x2c7/0x3d0 mm/slub.c:4216 __d_alloc+0x31/0x6f0 fs/dcache.c:1690 d_alloc_pseudo+0x1f/0xb0 fs/dcache.c:1821 alloc_path_pseudo fs/file_table.c:360 [inline] alloc_file_pseudo+0xcc/0x210 fs/file_table.c:376 __anon_inode_getfile fs/anon_inodes.c:166 [inline] anon_inode_getfile+0xc5/0x1a0 fs/anon_inodes.c:204 __do_sys_perf_event_open kernel/events/core.c:13631 [inline] __se_sys_perf_event_open+0xf20/0x1d70 kernel/events/core.c:13333 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4051f8e9a9 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:00007f4052da5038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f40521b5fa0 RCX: 00007f4051f8e9a9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480 RBP: 00007f4052010d69 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f40521b5fa0 R15: 00007ffd20c68cf8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 2993 Comm: kworker/u8:7 Not tainted 6.16.0-rc6-syzkaller-g7abc678e3084 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0xf69/0x12d0 kernel/smp.c:885 Code: 00 45 8b 2f 44 89 ee 83 e6 01 31 ff e8 a0 6e 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 4b 6a 0b 00 eb 37 f3 90 <43> 0f b6 04 2c 84 c0 75 10 41 f7 07 01 00 00 00 74 1e e8 30 6a 0b RSP: 0018:ffffc9000bf276a0 EFLAGS: 00000293 RAX: ffffffff81b4bec0 RBX: ffff8880b863b1c0 RCX: ffff88802fe30000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000bf27800 R08: ffffffff8fa1d6f7 R09: 1ffffffff1f43ade R10: dffffc0000000000 R11: fffffbfff1f43adf R12: 1ffff110170e7f5d R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880b873fae8 FS: 0000000000000000(0000) GS:ffff888125c23000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f73a8987ff8 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:1052 on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2691 [inline] smp_text_poke_batch_finish+0x5e0/0x1100 arch/x86/kernel/alternative.c:2901 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:850 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245