watchdog: BUG: soft lockup - CPU#1 stuck for 122s! [syz.0.33:6047] Modules linked in: irq event stamp: 9803419 hardirqs last enabled at (9803418): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (9803419): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (9549186): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (9549186): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (9549186): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (9549189): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (9549189): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (9549189): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 6047 Comm: syz.0.33 Not tainted 6.15.0-syzkaller-ga633dab4b4d2 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:strlen+0x5f/0x70 lib/string.c:422 Code: 49 8d 47 01 42 80 7c 3f 01 00 75 de eb 19 89 d9 80 e1 07 38 c1 7c e6 49 89 fc 48 89 df e8 c9 3a c2 f6 4c 89 e7 eb d6 5b 41 5c <41> 5e 41 5f c3 cc cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffc90000a07c08 EFLAGS: 00000246 RAX: 000000000000000d RBX: ffffffff8e13f078 RCX: 000000008b8bd505 RDX: ffffffff81729de5 RSI: ffffffff8e13f060 RDI: ffffffff8b8bd560 RBP: ffffc90000a07d20 R08: ffffc90005707968 R09: 0000000000000000 R10: ffffc90000a07eb8 R11: fffff52000140fd9 R12: 1ffff92000140f8c R13: ffffffff81729de5 R14: dffffc0000000000 R15: 000000000000000c FS: 00007f4beed9a6c0(0000) GS:ffff888125d54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30918ff8 CR3: 000000007b634000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _Z16__fortify_strlenPKcU25pass_dynamic_object_size1 include/linux/fortify-string.h:268 [inline] trace_event_get_offsets_lock include/trace/events/lock.h:50 [inline] do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0xc2/0x3b0 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 packet_rcv+0x175/0x1590 net/packet/af_packet.c:2277 dev_queue_xmit_nit+0xc38/0xcc0 net/core/dev.c:2587 xmit_one net/core/dev.c:3826 [inline] dev_hard_start_xmit+0x1be/0x830 net/core/dev.c:3846 __dev_queue_xmit+0x1adf/0x3a70 net/core/dev.c:4713 neigh_output include/net/neighbour.h:539 [inline] ip6_finish_output2+0x11fe/0x16a0 net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x234/0x7d0 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:317 [inline] ndisc_send_skb+0xb47/0x1400 net/ipv6/ndisc.c:513 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4041 call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 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:lock_is_held_type+0x137/0x190 kernel/locking/lockdep.c:5948 Code: 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 09 b3 36 07 <48> 3b 44 24 08 75 43 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffffc900057075b8 EFLAGS: 00000206 RAX: ba494832ec378e00 RBX: 0000000000000000 RCX: ba494832ec378e00 RDX: 0000000000000000 RSI: ffffffff8db69c35 RDI: ffffffff8be28800 RBP: 00000000ffffffff R08: ffffffff8fa101f7 R09: 1ffffffff1f4203e R10: dffffc0000000000 R11: fffffbfff1f4203f R12: 0000000000000246 R13: ffff88802f623c00 R14: ffffffff8e13f120 R15: 0000000000000001 lock_is_held include/linux/lockdep.h:249 [inline] schedule_debug kernel/sched/core.c:5982 [inline] __schedule+0x274/0x4d00 kernel/sched/core.c:6682 preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7058 preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13 class_preempt_notrace_destructor include/linux/preempt.h:482 [inline] __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3ca/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 ref_tracker_alloc+0x17d/0x460 lib/ref_tracker.c:209 __netns_tracker_alloc include/net/net_namespace.h:357 [inline] netns_tracker_alloc include/net/net_namespace.h:366 [inline] get_net_track include/net/net_namespace.h:383 [inline] sk_alloc+0x1b1/0x370 net/core/sock.c:2315 unix_create1+0xb0/0x7c0 net/unix/af_unix.c:-1 unix_create+0x154/0x200 net/unix/af_unix.c:1127 __sock_create+0x4b3/0x9f0 net/socket.c:1541 sock_create net/socket.c:1599 [inline] __sys_socketpair+0x1c5/0x560 net/socket.c:1746 __do_sys_socketpair net/socket.c:1799 [inline] __se_sys_socketpair net/socket.c:1796 [inline] __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1796 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: 0033:0x7f4bedf8e929 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:00007f4beed9a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007f4bee1b6080 RCX: 00007f4bedf8e929 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001 RBP: 00007f4bee010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000040 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4bee1b6080 R15: 00007ffe92c15028 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 1303 Comm: aoe_tx0 Not tainted 6.15.0-syzkaller-ga633dab4b4d2 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:vsnprintf+0x102/0xf00 lib/vsprintf.c:2817 Code: 48 89 44 24 30 4c 89 74 24 40 4d 89 f5 48 bb 00 00 00 00 00 fc ff df 45 31 f6 4c 89 ff 4c 89 f6 48 8d 54 24 48 e8 0e 0e 00 00 <48> 89 c5 49 89 d6 41 0f b6 fe 48 c7 c6 60 0d 88 8f e8 78 3e 5e f6 RSP: 0000:ffffc90004a76ad0 EFLAGS: 00000282 RAX: ffffffff8b8b8144 RBX: dffffc0000000000 RCX: ffff888027783c00 RDX: 0000000000000401 RSI: 000000000000000a RDI: 0000000000000000 RBP: ffffffff8b8b8142 R08: ffff888027783c00 R09: 0000000000000002 R10: 0000000000000025 R11: 0000000000000000 R12: ffffc90004a76bc0 R13: ffffc90004a76ca1 R14: 0000000000000404 R15: ffffffff8b8b8142 FS: 0000000000000000(0000) GS:ffff888125c54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556af56cd7b0 CR3: 00000000295f0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: snprintf+0xda/0x120 lib/vsprintf.c:2968 print_caller kernel/printk/printk.c:1390 [inline] info_print_prefix+0x1e1/0x310 kernel/printk/printk.c:1409 record_print_text+0x154/0x430 kernel/printk/printk.c:1456 printk_get_next_message+0x26d/0x7b0 kernel/printk/printk.c:3024 console_emit_next_record kernel/printk/printk.c:3092 [inline] console_flush_all+0x4ca/0xc40 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4917 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4928 __netdev_printk+0x3d7/0x4d0 net/core/dev.c:12508 netdev_warn+0x10a/0x160 net/core/dev.c:12561 ieee802154_subif_start_xmit+0x136/0x190 net/mac802154/tx.c:232 __netdev_start_xmit include/linux/netdevice.h:5215 [inline] netdev_start_xmit include/linux/netdevice.h:5224 [inline] xmit_one net/core/dev.c:3830 [inline] dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3846 sch_direct_xmit+0x241/0x4b0 net/sched/sch_generic.c:344 __dev_xmit_skb net/core/dev.c:4102 [inline] __dev_queue_xmit+0x17b6/0x3a70 net/core/dev.c:4679 dev_queue_xmit include/linux/netdevice.h:3355 [inline] tx+0x6b/0x190 drivers/block/aoe/aoenet.c:62 kthread+0x1d0/0x3e0 drivers/block/aoe/aoecmd.c:1237 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245