watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.0.21:6006] Modules linked in: irq event stamp: 16690435 hardirqs last enabled at (16690434): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (16690435): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (16644948): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (16644948): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (16644948): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (16644951): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (16644951): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (16644951): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 6006 Comm: syz.0.21 Not tainted 6.14.0-syzkaller-ga1b5bd45d4ee #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:lock_acquire+0x167/0x2f0 arch/x86/include/asm/irqflags.h:-1 Code: c7 44 24 10 00 00 00 00 9c 8f 44 24 10 f7 44 24 10 00 02 00 00 0f 85 fd 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 65 48 8b 45 00 <48> 3b 44 24 38 0f 85 72 01 00 00 48 83 c4 40 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc90000a08288 EFLAGS: 00000206 RAX: 10ac9658db8c0700 RBX: ffffffff8ed3dfe0 RCX: 10ac9658db8c0700 RDX: 0000000000000000 RSI: ffffffff8e4fc1d4 RDI: ffffffff8ca1b140 RBP: ffffffff93687020 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000246 R15: 0000000000000000 FS: 00007f287a7d46c0(0000) GS:ffff888125099000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c36e133 CR3: 000000007c086000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xd5/0x23b0 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4151 [inline] slab_alloc_node mm/slub.c:4200 [inline] kmem_cache_alloc_node_noprof+0x1f2/0x3b0 mm/slub.c:4252 __alloc_skb+0x1c2/0x480 net/core/skbuff.c:658 __netdev_alloc_skb+0x105/0xa10 net/core/skbuff.c:732 netdev_alloc_skb include/linux/skbuff.h:3413 [inline] dev_alloc_skb include/linux/skbuff.h:3426 [inline] __ieee80211_beacon_get+0x9a7/0x15e0 net/mac80211/tx.c:5475 ieee80211_beacon_get_tim+0xb7/0x330 net/mac80211/tx.c:5597 ieee80211_beacon_get include/net/mac80211.h:5648 [inline] mac80211_hwsim_beacon_tx+0x3a2/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2313 __iterate_interfaces+0x297/0x570 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2347 __run_hrtimer kernel/time/hrtimer.c:1791 [inline] __hrtimer_run_queues+0x5a6/0xd40 kernel/time/hrtimer.c:1855 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1872 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:preempt_schedule_irq+0xf9/0x1c0 kernel/sched/core.c:7090 Code: 89 fe 49 c1 ee 03 eb 0d 48 f7 03 08 00 00 00 0f 84 89 00 00 00 bf 01 00 00 00 e8 a2 35 5f f5 e8 bd f3 99 f5 fb bf 01 00 00 00 32 a5 ff ff 43 80 3c 26 00 74 08 4c 89 ff e8 d3 28 fc f5 48 c7 RSP: 0018:ffffc90004cbf900 EFLAGS: 00000282 RAX: 10ac9658db8c0700 RBX: 1ffff92000997f28 RCX: 0000000000000007 RDX: 0000000000000007 RSI: ffffffff8e69b2a4 RDI: 0000000000000001 RBP: ffffc90004cbf9c0 R08: ffffffff905fcd77 R09: 1ffffffff20bf9ae R10: dffffc0000000000 R11: fffffbfff20bf9af R12: dffffc0000000000 R13: 1ffff92000997f20 R14: 1ffff92000997f24 R15: ffffc90004cbf920 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:put_cpu_partial+0x1b8/0x250 mm/slub.c:3263 Code: 0f 85 b4 00 00 00 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 94 95 0d 0a f7 c3 00 02 00 00 74 ba fb 4d 85 e4 <75> b9 eb c2 90 e8 5e a9 de 02 85 c0 74 22 83 3d b7 6f 3d 0e 00 75 RSP: 0018:ffffc90004cbfa88 EFLAGS: 00000282 RAX: 10ac9658db8c0700 RBX: 0000000000000286 RCX: 0000000000000007 RDX: 0000000000000007 RSI: ffffffff8e69b2a4 RDI: ffffffff8ca1b140 RBP: 0000000000000001 R08: ffffffff905fcd77 R09: 1ffffffff20bf9ae R10: dffffc0000000000 R11: fffffbfff20bf9af R12: ffffea0001f3b880 R13: ffffea0001b39c00 R14: ffff88802e1e9e00 R15: ffff88801c298b40 __slab_free+0x294/0x390 mm/slub.c:4516 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4151 [inline] slab_alloc_node mm/slub.c:4200 [inline] __kmalloc_cache_noprof+0x1c8/0x370 mm/slub.c:4357 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] find_get_pmu_context+0x89/0x7d0 kernel/events/core.c:4985 __do_sys_perf_event_open kernel/events/core.c:13336 [inline] __se_sys_perf_event_open+0x1329/0x34b0 kernel/events/core.c:13081 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f287998d169 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:00007f287a7d4038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f2879ba5fa0 RCX: 00007f287998d169 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000040 RBP: 00007f2879a0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2879ba5fa0 R15: 00007ffca77e2958 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 1301 Comm: aoe_tx0 Not tainted 6.14.0-syzkaller-ga1b5bd45d4ee #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:check_kcov_mode kernel/kcov.c:185 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x70 kernel/kcov.c:217 Code: 24 65 48 8b 0c 25 08 70 68 93 65 8b 15 98 18 a5 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 3c 16 00 00 00 74 2c <8b> 91 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 48 RSP: 0018:ffffc900042c6918 EFLAGS: 00000246 RAX: ffffffff8c2c1ece RBX: 0000000000000038 RCX: ffff888028035a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000018 RBP: ffffc900042c6a30 R08: ffffffff8c2c1e74 R09: 0000000000000000 R10: ffffc900042c69a0 R11: fffff52000858d37 R12: ffffc900042c6dab R13: ffffc900042c6dac R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888124f99000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557c12a81028 CR3: 00000000133c4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: number+0xbbe/0xf60 lib/vsprintf.c:556 vsnprintf+0xb2e/0x1230 lib/vsprintf.c:2816 sprintf+0xdc/0x130 lib/vsprintf.c:3015 print_time kernel/printk/printk.c:1381 [inline] info_print_prefix+0x16d/0x310 kernel/printk/printk.c:1407 record_print_text+0x14a/0x430 kernel/printk/printk.c:1456 printk_get_next_message+0x65b/0x8b0 kernel/printk/printk.c:3024 console_emit_next_record kernel/printk/printk.c:3092 [inline] console_flush_all+0x56b/0xec0 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0x151/0x3b0 kernel/printk/printk.c:3325 vprintk_emit+0x761/0xa40 kernel/printk/printk.c:2450 dev_vprintk_emit+0x358/0x420 drivers/base/core.c:4891 dev_printk_emit+0xdf/0x130 drivers/base/core.c:4902 __netdev_printk+0x3e0/0x4d0 net/core/dev.c:12392 netdev_warn+0x12d/0x180 net/core/dev.c:12445 ieee802154_subif_start_xmit+0x134/0x190 net/mac802154/tx.c:232 __netdev_start_xmit include/linux/netdevice.h:5201 [inline] netdev_start_xmit include/linux/netdevice.h:5210 [inline] xmit_one net/core/dev.c:3780 [inline] dev_hard_start_xmit+0x2d4/0x840 net/core/dev.c:3796 sch_direct_xmit+0x2b2/0x600 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:4022 [inline] __dev_queue_xmit+0x1a9c/0x3f60 net/core/dev.c:4599 dev_queue_xmit include/linux/netdevice.h:3350 [inline] tx+0x6b/0x180 drivers/block/aoe/aoenet.c:62 kthread+0x23c/0x470 drivers/block/aoe/aoecmd.c:1237 kthread+0x7b7/0x940 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245