watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.5:4402] Modules linked in: irq event stamp: 4959999 hardirqs last enabled at (4959998): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4959999): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4950744): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4950747): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4402 Comm: syz-executor.5 Not tainted 5.10.230 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:ether_addr_equal include/linux/etherdevice.h:341 [inline] RIP: 0010:ieee80211_accept_frame net/mac80211/rx.c:4070 [inline] RIP: 0010:ieee80211_prepare_and_rx_handle+0x1e61/0x5890 net/mac80211/rx.c:4589 Code: 74 85 c0 0f 84 4a f4 ff ff e8 5b 58 81 fd 48 8d bd 4a 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 f9 4d ad fd RSP: 0018:ffff88806cf09b00 EFLAGS: 00000212 RAX: dffffc0000000000 RBX: ffff888045d7fc50 RCX: ffffffff83bf6614 RDX: 0000000000000000 RSI: ffffffff83bf6625 RDI: ffff88804766560a RBP: ffff888047664bc0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffff88806cf09d98 R15: ffff88804868d3c0 FS: 00007f3f750d0700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000340 CR3: 000000004726c000 CR4: 0000000000350ee0 Call Trace: __ieee80211_rx_handle_packet net/mac80211/rx.c:4666 [inline] ieee80211_rx_list+0xdd0/0x2370 net/mac80211/rx.c:4846 ieee80211_rx_napi+0xdc/0x3c0 net/mac80211/rx.c:4867 ieee80211_rx include/net/mac80211.h:4502 [inline] ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x244/0x2f0 kernel/softirq.c:560 __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:compound_head include/linux/page-flags.h:188 [inline] RIP: 0010:virt_to_head_page include/linux/mm.h:862 [inline] RIP: 0010:___cache_free+0x4f/0x360 mm/slub.c:3156 Code: 00 00 48 c7 c2 00 00 00 80 48 2b 15 eb 53 5c 03 48 01 d0 48 8b 35 d1 53 5c 03 48 c1 e8 0c 48 c1 e0 06 4c 8d 2c 30 49 8b 55 08 <48> 8d 42 ff 83 e2 01 49 0f 44 c5 48 89 04 24 0f 1f 44 00 00 48 85 RSP: 0018:ffff88801f37eff0 EFLAGS: 00000212 RAX: 0000000001221880 RBX: ffff888048862c00 RCX: ffffea0001221800 RDX: ffffea0001221801 RSI: ffffea0000000000 RDI: ffff888008041280 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff816cb700 R10: ffff888046f52a80 R11: 0000000000000001 R12: ffff888008041280 R13: ffffea0001221880 R14: ffffffff80000000 R15: ffff88801f183c80 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 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] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x310 mm/slub.c:2909 kmem_cache_zalloc include/linux/slab.h:654 [inline] __kernfs_new_node+0xd4/0x860 fs/kernfs/dir.c:635 kernfs_new_node+0x18d/0x250 fs/kernfs/dir.c:711 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:985 sysfs_add_file_mode_ns+0x221/0x560 fs/sysfs/file.c:306 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x324/0xb30 fs/sysfs/group.c:149 internal_create_groups.part.0+0x90/0x140 fs/sysfs/group.c:189 internal_create_groups fs/sysfs/group.c:185 [inline] sysfs_create_groups+0x25/0x50 fs/sysfs/group.c:215 create_dir lib/kobject.c:100 [inline] kobject_add_internal+0x550/0xa30 lib/kobject.c:263 kobject_add_varg lib/kobject.c:398 [inline] kobject_init_and_add+0x101/0x160 lib/kobject.c:481 netdev_queue_add_kobject net/core/net-sysfs.c:1649 [inline] netdev_queue_update_kobjects+0x13b/0x3e0 net/core/net-sysfs.c:1694 register_queue_kobjects net/core/net-sysfs.c:1755 [inline] netdev_register_kobject+0x2ee/0x3b0 net/core/net-sysfs.c:2001 register_netdevice+0xd6e/0x1480 net/core/dev.c:10048 register_netdev+0x2d/0x50 net/core/dev.c:10172 sit_init_net+0x264/0x500 net/ipv6/sit.c:1916 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: 0033:0x7f3f77b5ab19 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:00007f3f750d0188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f3f77c6df60 RCX: 00007f3f77b5ab19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007f3f77bb4f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd627fa34f R14: 00007f3f750d0300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:706 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 85 c0 test %eax,%eax 2: 0f 84 4a f4 ff ff je 0xfffff452 8: e8 5b 58 81 fd callq 0xfd815868 d: 48 8d bd 4a 0a 00 00 lea 0xa4a(%rbp),%rdi 14: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1b: fc ff df 1e: 48 89 fa mov %rdi,%rdx 21: 48 c1 ea 03 shr $0x3,%rdx 25: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 29: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2c: 83 e0 07 and $0x7,%eax 2f: 83 c0 03 add $0x3,%eax 32: 38 d0 cmp %dl,%al 34: 7c 09 jl 0x3f 36: 84 d2 test %dl,%dl 38: 74 05 je 0x3f 3a: e8 f9 4d ad fd callq 0xfdad4e38