watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:4640] Modules linked in: irq event stamp: 4909779 hardirqs last enabled at (4909778): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4909779): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4876834): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4876839): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4640 Comm: syz-executor.3 Not tainted 5.10.229 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_depot_save+0x8/0x400 lib/stackdepot.c:238 Code: d5 a0 44 9d 87 44 89 c0 e9 b5 86 22 02 45 31 c0 44 89 c0 e9 aa 86 22 02 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 <55> 53 48 83 ec 18 65 48 8b 04 25 28 00 00 00 48 89 44 24 10 31 c0 RSP: 0018:ffff88806ce097a8 EFLAGS: 00000293 RAX: 0000000000000010 RBX: ffff888045c0dc70 RCX: 0000000000000024 RDX: 0000000000092a20 RSI: 0000000000000010 RDI: ffff88806ce097d0 RBP: 0000000000092a20 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000092a20 R13: 0000000000000000 R14: ffff88800804d640 R15: 0000000000000170 FS: 00007f78e7ae0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd53c43da8 CR3: 000000000eb50000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000d0602 Call Trace: kasan_save_stack+0x32/0x40 mm/kasan/common.c:50 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] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:199 __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 __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:rcu_read_unlock include/linux/rcupdate.h:767 [inline] RIP: 0010:mod_objcg_state mm/slab.h:314 [inline] RIP: 0010:memcg_slab_free_hook mm/slab.h:383 [inline] RIP: 0010:memcg_slab_free_hook mm/slab.h:351 [inline] RIP: 0010:do_slab_free mm/slub.c:3105 [inline] RIP: 0010:___cache_free+0x1aa/0x360 mm/slub.c:3156 Code: af 80 00 00 00 0f 85 c3 00 00 00 9c 41 5d fa 41 f7 c5 00 02 00 00 0f 85 5d 01 00 00 44 89 fa 44 89 f6 e8 09 11 02 00 41 55 9d 21 c3 79 02 85 c0 0f 85 f7 00 00 00 65 ff 0d 92 ef 95 7e e8 1d RSP: 0018:ffff888046dcf748 EFLAGS: 00000246 RAX: 00000000004a6a25 RBX: ffff888015bbe7e8 RCX: 1ffffffff0d0e152 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff816c8108 RBP: ffff88800eaa3a80 R08: 0000000000000001 R09: ffffffff8686a6ef R10: fffffbfff0d0d4dd R11: 0000000000000001 R12: ffff8880083f9780 R13: 0000000000000246 R14: 0000000000000006 R15: 00000000fffffa80 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:552 [inline] kzalloc include/linux/slab.h:664 [inline] ipv4_mib_init_net+0x27d/0x570 net/ipv4/af_inet.c:1790 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: 0033:0x7f78ea56ab19 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:00007f78e7ae0188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f78ea67df60 RCX: 00007f78ea56ab19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007f78ea5c4f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca3c8f04f R14: 00007f78e7ae0300 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), 1 bytes skipped: 0: a0 44 9d 87 44 89 c0 movabs 0xb5e9c08944879d44,%al 7: e9 b5 9: 86 22 xchg %ah,(%rdx) b: 02 45 31 add 0x31(%rbp),%al e: c0 44 89 c0 e9 rolb $0xe9,-0x40(%rcx,%rcx,4) 13: aa stos %al,%es:(%rdi) 14: 86 22 xchg %ah,(%rdx) 16: 02 66 2e add 0x2e(%rsi),%ah 19: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 20: 00 21: 41 57 push %r15 23: 41 56 push %r14 25: 41 55 push %r13 27: 41 54 push %r12 * 29: 55 push %rbp <-- trapping instruction 2a: 53 push %rbx 2b: 48 83 ec 18 sub $0x18,%rsp 2f: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax 36: 00 00 38: 48 89 44 24 10 mov %rax,0x10(%rsp) 3d: 31 c0 xor %eax,%eax