watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:4622] Modules linked in: irq event stamp: 8313397 hardirqs last enabled at (8313396): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (8313397): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (8286218): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (8286221): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4622 Comm: syz-executor.0 Not tainted 5.10.224 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xbda/0x1a90 arch/x86/kernel/unwind_orc.c:536 Code: 65 48 8b 04 25 80 6f 02 00 49 39 45 28 0f 85 94 f8 ff ff 80 3d 97 9f 54 04 00 0f 85 87 f8 ff ff e9 49 18 c8 02 48 8b 44 24 60 <4c> 89 e2 4c 89 ef 4c 89 44 24 30 48 89 4c 24 28 48 8d 70 f8 48 89 RSP: 0018:ffff88806ce095c8 EFLAGS: 00000246 RAX: ffff88804819f7c0 RBX: 0000000000000002 RCX: ffffffff85d42590 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff88806ce096d5 R08: ffffffff85d42595 R09: ffff88804819f7c0 R10: 0000000000032042 R11: 1ffff1100d9c12c1 R12: ffff88806ce096e8 R13: ffff88806ce096a0 R14: 1ffff1100d9c12c1 R15: ffffffff85d42594 FS: 00007f835e5c0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e53c842678 CR3: 000000000d398000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x13b/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] __kmalloc_node_track_caller+0x1a6/0x3b0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:143 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:211 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:447 netdev_alloc_skb include/linux/skbuff.h:2857 [inline] dev_alloc_skb include/linux/skbuff.h:2870 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1584 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1648 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1665 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:qlink_free mm/kasan/quarantine.c:151 [inline] RIP: 0010:qlist_free_all+0x3f/0xe0 mm/kasan/quarantine.c:170 Code: a3 00 00 00 49 89 fc 41 bd 00 00 00 80 49 c7 c6 00 00 00 80 48 bd 00 00 00 00 00 fc ff df eb 2c 48 63 87 c0 00 00 00 4c 8b 3e <48> c7 c2 05 9a 6c 81 48 29 c6 48 89 f0 48 c1 e8 03 c6 04 28 fb e8 RSP: 0018:ffff88804819f8a8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffffffffff RDX: 0000000000000000 RSI: ffff88804832e280 RDI: ffff888008805a00 RBP: dffffc0000000000 R08: 000000000000000f R09: ffffffff816c9a01 R10: ffff88800d169000 R11: 0000000000000001 R12: ffff88804819f8e0 R13: 0000000080000000 R14: ffffffff80000000 R15: ffff8880202c4800 quarantine_reduce+0x184/0x210 mm/kasan/quarantine.c:267 __kasan_kmalloc.constprop.0+0xa2/0xd0 mm/kasan/common.c:442 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node_trace+0x14f/0x340 mm/slub.c:2946 kmalloc_node include/linux/slab.h:570 [inline] kzalloc_node include/linux/slab.h:675 [inline] create_io_worker+0xe8/0x690 io_uring/io-wq.c:816 io_wqe_create_worker io_uring/io-wq.c:313 [inline] io_wqe_enqueue+0x69e/0xbe0 io_uring/io-wq.c:948 io_queue_async_work+0x26b/0x4f0 io_uring/io_uring.c:1483 __io_queue_sqe+0x5cc/0x9d0 io_uring/io_uring.c:7092 io_queue_sqe io_uring/io_uring.c:7110 [inline] io_submit_sqe io_uring/io_uring.c:7287 [inline] io_submit_sqes+0x44aa/0x8610 io_uring/io_uring.c:7393 __do_sys_io_uring_enter+0x6b5/0x18c0 io_uring/io_uring.c:9920 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f836104ab19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f835e5c0188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f836115df60 RCX: 00007f836104ab19 RDX: 0000000000000000 RSI: 00000000000058ab RDI: 0000000000000003 RBP: 00007f83610a4f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffba07b46f R14: 00007f835e5c0300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 64 Comm: kworker/u4:2 Not tainted 5.10.224 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: phy17 ieee80211_iface_work RIP: 0010:stack_trace_consume_entry+0xa/0x160 kernel/stacktrace.c:82 Code: e8 9b 9b 10 00 48 c7 c1 e0 45 48 84 31 d2 be 80 01 00 00 48 c7 c7 e0 43 48 84 e9 d1 9f 5e 00 cc 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 c1 ea 03 48 83 ec 08 0f b6 RSP: 0018:ffff88800dddf060 EFLAGS: 00000082 RAX: dffffc0000000000 RBX: ffffffff813009e0 RCX: 1ffff11001bbbe01 RDX: 1ffff11001bbbe16 RSI: ffffffff83b9c91a RDI: ffff88800dddf120 RBP: ffff88800dddf0f0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff11001bbbdfa R12: ffff88800dddf120 R13: 0000000000000000 R14: ffff888009278000 R15: ffff88804783d780 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e53c842678 CR3: 00000000091ea000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x73/0xf0 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_record_aux_stack+0xa2/0xb0 mm/kasan/generic.c:346 __call_rcu kernel/rcu/tree.c:2976 [inline] call_rcu+0x8a/0x9c0 kernel/rcu/tree.c:3050 kmemleak_free_recursive include/linux/kmemleak.h:49 [inline] slab_free_hook mm/slub.c:1517 [inline] slab_free_freelist_hook+0x13e/0x180 mm/slub.c:1576 slab_free mm/slub.c:3149 [inline] kfree+0xd7/0x340 mm/slub.c:4125 ieee802_11_parse_elems_crc+0x967/0x1000 net/mac80211/util.c:1488 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2061 [inline] ieee80211_rx_mgmt_probe_beacon+0x17a/0x1780 net/mac80211/ibss.c:1616 ieee80211_ibss_rx_queued_mgmt+0xddd/0x1750 net/mac80211/ibss.c:1646 ieee80211_iface_work+0x6e3/0x930 net/mac80211/iface.c:1454 process_one_work+0x9a9/0x14b0 kernel/workqueue.c:2282 worker_thread+0x61d/0x1310 kernel/workqueue.c:2428 kthread+0x38f/0x470 kernel/kthread.c:328 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:298 ---------------- Code disassembly (best guess): 0: 65 48 8b 04 25 80 6f mov %gs:0x26f80,%rax 7: 02 00 9: 49 39 45 28 cmp %rax,0x28(%r13) d: 0f 85 94 f8 ff ff jne 0xfffff8a7 13: 80 3d 97 9f 54 04 00 cmpb $0x0,0x4549f97(%rip) # 0x4549fb1 1a: 0f 85 87 f8 ff ff jne 0xfffff8a7 20: e9 49 18 c8 02 jmpq 0x2c8186e 25: 48 8b 44 24 60 mov 0x60(%rsp),%rax * 2a: 4c 89 e2 mov %r12,%rdx <-- trapping instruction 2d: 4c 89 ef mov %r13,%rdi 30: 4c 89 44 24 30 mov %r8,0x30(%rsp) 35: 48 89 4c 24 28 mov %rcx,0x28(%rsp) 3a: 48 8d 70 f8 lea -0x8(%rax),%rsi 3e: 48 rex.W 3f: 89 .byte 0x89