watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:4778] Modules linked in: irq event stamp: 5655289 hardirqs last enabled at (5655288): [<ffffffff84000d02>] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5655289): [<ffffffff83e6275b>] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (5620680): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5620683): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4778 Comm: syz-executor.0 Not tainted 5.10.228 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x61/0x1a90 arch/x86/kernel/unwind_orc.c:423 Code: eb 03 48 c7 44 24 50 c0 72 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 9c 24 98 00 00 00 31 db 84 c0 74 RSP: 0018:ffff88806ce095c8 EFLAGS: 00000216 RAX: 0000000000000000 RBX: ffffffff813023b0 RCX: 1ffff1100d9c1201 RDX: 1ffff1100d9c12d4 RSI: ffffffff816c9172 RDI: ffff88806ce096a0 RBP: ffff88806ce09728 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9c12c1 R12: ffff88806ce09758 R13: ffff88806ce096a0 R14: 1ffff1100d9c12c1 R15: 0000000000000170 FS: 00007fe10d484700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2606461000 CR3: 0000000018028000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000dd060a Call Trace: <IRQ> 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:2854 [inline] dev_alloc_skb include/linux/skbuff.h:2867 [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:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 </IRQ> __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:do_slab_free mm/slub.c:3115 [inline] RIP: 0010:___cache_free+0x1e7/0x360 mm/slub.c:3156 Code: 7e e8 5d 94 c1 ff 48 c7 c7 60 99 ff 84 48 c7 c6 67 7e 6c 81 e8 3a cd ba ff 48 89 ef e8 02 82 ff ff 49 8b 04 24 65 48 8b 50 08 <65> 48 03 05 d9 96 95 7e 48 8b 3c 24 48 39 78 10 0f 85 20 01 00 00 RSP: 0018:ffff88804857f570 EFLAGS: 00000282 RAX: 000000000003ffb0 RBX: ffff88801a8bba70 RCX: ffff88804857f4f8 RDX: 000000000000495e RSI: 0000000000000000 RDI: ffff888048f43db8 RBP: ffff888008dfb100 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880083f9000 R13: 0000000000000246 R14: 0000000000000005 R15: 00000000fffffe80 qlink_free mm/kasan/quarantine.c:151 [inline] qlist_free_all+0x59/0xe0 mm/kasan/quarantine.c:170 quarantine_reduce+0x184/0x210 mm/kasan/quarantine.c:267 __kasan_kmalloc.constprop.0+0xa2/0xd0 mm/kasan/common.c:442 kmalloc include/linux/slab.h:557 [inline] sk_prot_alloc+0x11d/0x2c0 net/core/sock.c:1707 sk_alloc+0x30/0x350 net/core/sock.c:1761 __netlink_create+0x63/0x340 net/netlink/af_netlink.c:639 __netlink_kernel_create+0x110/0x860 net/netlink/af_netlink.c:2042 netlink_kernel_create include/linux/netlink.h:60 [inline] nfnetlink_net_init+0xa8/0x170 net/netfilter/nfnetlink.c:633 ops_init+0xbb/0x6b0 net/core/net_namespace.c:156 setup_net+0x2d8/0x810 net/core/net_namespace.c:354 copy_net_ns+0x2c0/0x5d0 net/core/net_namespace.c:495 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x3fb/0x4f0 kernel/nsproxy.c:179 copy_process+0x385b/0x7800 kernel/fork.c:2129 kernel_clone+0xe7/0x980 kernel/fork.c:2506 __do_sys_clone3+0x1e5/0x320 kernel/fork.c:2781 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fe10ff0eb19 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:00007fe10d484188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fe110021f60 RCX: 00007fe10ff0eb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007fe10ff68f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe29c0e8ef R14: 00007fe10d484300 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:706 ---------------- Code disassembly (best guess): 0: eb 03 jmp 0x5 2: 48 c7 44 24 50 c0 72 movq $0xffffffff811072c0,0x50(%rsp) 9: 10 81 b: 49 8d 14 03 lea (%r11,%rax,1),%rdx f: 4d 89 de mov %r11,%r14 12: c7 02 f1 f1 f1 f1 movl $0xf1f1f1f1,(%rdx) 18: c7 42 04 00 f3 f3 f3 movl $0xf3f3f300,0x4(%rdx) 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 2a: 65 48 8b 1c 25 28 00 mov %gs:0x28,%rbx <-- trapping instruction 31: 00 00 33: 48 89 9c 24 98 00 00 mov %rbx,0x98(%rsp) 3a: 00 3b: 31 db xor %ebx,%ebx 3d: 84 c0 test %al,%al 3f: 74 .byte 0x74