watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.0.44:5486] Modules linked in: irq event stamp: 10665609 hardirqs last enabled at (10665608): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (10665609): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (10577960): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (10577960): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (10577960): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (10577963): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (10577963): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (10577963): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 5486 Comm: syz.0.44 Not tainted 6.10.0-syzkaller-12642-gb9e7fc0aeda7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x90 kernel/kcov.c:303 Code: 10 48 89 74 0a 18 4c 89 44 0a 20 c3 cc cc cc cc 66 2e 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 1e fa 4c 8b 04 24 65 48 8b 14 25 40 d7 03 00 65 8b 05 90 4f RSP: 0018:ffffc90000007580 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc90000007698 RCX: ffff888020f00000 RDX: 0000000000000101 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000007660 R08: 0000000000000022 R09: ffffc90000007750 R10: 0000000000000003 R11: ffffffff817f2a40 R12: ffff888020f00000 R13: dffffc0000000000 R14: 0000000000000001 R15: ffffffff81c3a62a FS: 00007fee891266c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c314a70 CR3: 000000001eb08000 CR4: 00000000003506f0 DR0: 0100000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: unwind_done arch/x86/include/asm/unwind.h:50 [inline] unwind_next_frame+0xa1/0x2a00 arch/x86/kernel/unwind_orc.c:475 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2252 [inline] slab_free mm/slub.c:4473 [inline] kmem_cache_free+0x145/0x350 mm/slub.c:4548 skb_kfree_head net/core/skbuff.c:1082 [inline] skb_free_head net/core/skbuff.c:1096 [inline] skb_release_data+0x64d/0x880 net/core/skbuff.c:1123 skb_release_all net/core/skbuff.c:1188 [inline] __kfree_skb net/core/skbuff.c:1202 [inline] consume_skb+0xb1/0x160 net/core/skbuff.c:1426 mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2315 __iterate_interfaces+0x222/0x510 net/mac80211/util.c:772 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1770 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:6851 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 a5 3a a5 f5 e8 40 43 dd f5 fb bf 01 00 00 00 55 ad ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 a5 17 3d f6 48 RSP: 0018:ffffc900049875c0 EFLAGS: 00000282 RAX: 5e03a25287173b00 RBX: 1ffff92000930ec0 RCX: ffffffff81701f3a RDX: dffffc0000000000 RSI: ffffffff8c0ad5a0 RDI: 0000000000000001 RBP: ffffc90004987680 R08: ffffffff93726807 R09: 1ffffffff26e4d00 R10: dffffc0000000000 R11: fffffbfff26e4d01 R12: 1ffff92000930eb8 R13: 1ffff92000930ebc R14: ffffc900049875e0 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [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+0x86/0x290 mm/kasan/generic.c:189 Code: 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 <0f> 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc RSP: 0018:ffffc90004987748 EFLAGS: 00000246 RAX: 00000000006fac01 RBX: 1ffffffff02df584 RCX: ffffffff81353223 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff816fac25 RBP: fffffffffffffffe R08: ffffffff816fac28 R09: 1ffffffff02df585 R10: dffffc0000000000 R11: fffffbfff02df584 R12: 0000000000000004 R13: ffffffff93105aaa R14: dffffc0000000001 R15: fffffbfff02df586 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 text_poke_bp_batch+0x493/0xb30 arch/x86/kernel/alternative.c:2307 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 tracepoint_add_func+0x953/0x9e0 kernel/tracepoint.c:361 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:531 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x478/0x930 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x243/0x2e0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10244 perf_try_init_event+0x139/0x3f0 kernel/events/core.c:11719 perf_init_event kernel/events/core.c:11789 [inline] perf_event_alloc+0x131a/0x22d0 kernel/events/core.c:12069 __do_sys_perf_event_open kernel/events/core.c:12576 [inline] __se_sys_perf_event_open+0xb43/0x38d0 kernel/events/core.c:12467 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fee883773b9 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:00007fee89126048 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fee88505f80 RCX: 00007fee883773b9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007fee883e48e6 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fee88505f80 R15: 00007ffd6f6f16d8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2639 Comm: kworker/1:2 Not tainted 6.10.0-syzkaller-12642-gb9e7fc0aeda7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: events fqdir_free_fn RIP: 0010:csd_lock_wait kernel/smp.c:312 [inline] RIP: 0010:smp_call_function_single+0x459/0x16a0 kernel/smp.c:651 Code: fd 4d 0c 00 41 83 e4 01 75 16 e8 b2 49 0c 00 4d 89 fc 44 8b 7c 24 14 eb 46 e8 a3 49 0c 00 eb 3f 4d 89 fc 44 8b 7c 24 14 f3 90 <42> 0f b6 04 2b 84 c0 75 10 41 f7 06 01 00 00 00 74 1e e8 80 49 0c RSP: 0018:ffffc90009a7f980 EFLAGS: 00000293 RAX: ffffffff818739e0 RBX: 1ffff9200134ff49 RCX: ffff88802a399e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90009a7fb00 R08: ffffffff818739a3 R09: 1ffffffff202f3b5 R10: dffffc0000000000 R11: ffffffff813e7260 R12: 1ffff9200134ff44 R13: dffffc0000000000 R14: ffffc90009a7fa48 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f15207b4866 CR3: 00000000635ee000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_barrier+0x327/0x530 kernel/rcu/tree.c:4538 fqdir_free_fn+0x32/0x130 net/ipv4/inet_fragment.c:167 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244