watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.2:10355] Modules linked in: irq event stamp: 4716987 hardirqs last enabled at (4716986): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4716987): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4684844): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4684847): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 10355 Comm: syz-executor.2 Not tainted 5.10.238 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x56/0x1a90 arch/x86/kernel/unwind_orc.c:425 Code: 48 c7 44 24 48 40 0e bd 84 49 c1 eb 03 48 c7 44 24 50 c0 82 10 81 49 8d 14 03 4d 89 de c7 02 f1 f1 f1 f1 c7 42 04 00 f3 f3 f3 <48> 89 fa 48 c1 ea 03 0f b6 04 02 65 48 8b 1c 25 28 00 00 00 48 89 RSP: 0018:ffff88806ce09868 EFLAGS: 00000212 RAX: dffffc0000000000 RBX: ffffffff81302c70 RCX: ffffffff859bc101 RDX: ffffed100d9c1315 RSI: ffffffff816f8622 RDI: ffff88806ce09940 RBP: ffff88806ce099c8 R08: 0000000000000005 R09: ffff88806ce09a68 R10: 0000000000032042 R11: 1ffff1100d9c1315 R12: ffff88806ce099f8 R13: ffff88806ce09940 R14: 1ffff1100d9c1315 R15: ffff888047368c00 FS: 00007f91eff20700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f91efeff718 CR3: 000000001f076000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 __save_stack_trace mm/kmemleak.c:563 [inline] create_object.isra.0+0x372/0xa20 mm/kmemleak.c:618 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:144 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:212 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:448 netdev_alloc_skb include/linux/skbuff.h:2855 [inline] dev_alloc_skb include/linux/skbuff.h:2868 [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:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __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:1106 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 55 d9 6c 81 48 29 c6 48 89 f0 48 c1 e8 03 c6 04 28 fb e8 RSP: 0018:ffff88801f1c7cb8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: dead0000000000ff RDX: 0000000000000000 RSI: ffff888019c84870 RDI: ffff88800804d640 RBP: dffffc0000000000 R08: 0000000000000011 R09: ffffffff816cd901 R10: ffff88800d81d950 R11: 0000000000000001 R12: ffff88801f1c7cf0 R13: 0000000080000000 R14: ffffffff80000000 R15: ffff88800cee8360 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] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x13b/0x310 mm/slub.c:2909 sock_alloc_inode+0x18/0x1c0 net/socket.c:253 alloc_inode+0x63/0x240 fs/inode.c:233 new_inode_pseudo+0x14/0xe0 fs/inode.c:968 sock_alloc+0x3c/0x270 net/socket.c:573 __sock_create+0xbd/0x7f0 net/socket.c:1399 sock_create net/socket.c:1486 [inline] __sys_socket+0xef/0x200 net/socket.c:1528 __do_sys_socket net/socket.c:1537 [inline] __se_sys_socket net/socket.c:1535 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1535 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f91f2a0db19 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:00007f91eff20188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f91f2b211a0 RCX: 00007f91f2a0db19 RDX: 0000000000000010 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007f91f2a67f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc94a3572f R14: 00007f91eff20300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:711 Bluetooth: hci7: command 0x0409 tx timeout Bluetooth: hci7: command 0x041b tx timeout Bluetooth: hci7: command 0x040f tx timeout wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready ---------------- Code disassembly (best guess): 0: 48 c7 44 24 48 40 0e movq $0xffffffff84bd0e40,0x48(%rsp) 7: bd 84 9: 49 c1 eb 03 shr $0x3,%r11 d: 48 c7 44 24 50 c0 82 movq $0xffffffff811082c0,0x50(%rsp) 14: 10 81 16: 49 8d 14 03 lea (%r11,%rax,1),%rdx 1a: 4d 89 de mov %r11,%r14 1d: c7 02 f1 f1 f1 f1 movl $0xf1f1f1f1,(%rdx) 23: c7 42 04 00 f3 f3 f3 movl $0xf3f3f300,0x4(%rdx) * 2a: 48 89 fa mov %rdi,%rdx <-- trapping instruction 2d: 48 c1 ea 03 shr $0x3,%rdx 31: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 35: 65 48 8b 1c 25 28 00 mov %gs:0x28,%rbx 3c: 00 00 3e: 48 rex.W 3f: 89 .byte 0x89