cgroup: Unknown subsys name 'reezer' watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.2:4428] Modules linked in: irq event stamp: 6537979 hardirqs last enabled at (6537978): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (6537979): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (6499548): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (6499551): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4428 Comm: syz-executor.2 Not tainted 5.10.228 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:97 [inline] RIP: 0010:do_raw_spin_unlock+0x20/0x220 kernel/locking/spinlock_debug.c:138 Code: 86 ad 44 00 eb 9e 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 41 54 55 53 48 89 fb 48 83 c7 04 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b9 01 00 00 81 RSP: 0018:ffff88806ce09b60 EFLAGS: 00000213 RAX: dffffc0000000000 RBX: ffffffff87a06080 RCX: ffff88806ce09b08 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff87a06084 RBP: ffffffff87a06080 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800e4c8dc0 R13: ffff8880472db3f0 R14: ffff8880472db1c0 R15: 0000000000000000 FS: 00007f47a9742700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f641e407000 CR3: 000000000ca8c000 CR4: 0000000000350ef0 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock+0x1a/0x30 kernel/locking/spinlock.c:183 spin_unlock include/linux/spinlock.h:394 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0xc52/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1517 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x940 drivers/net/wireless/mac80211_hwsim.c:1770 __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:cmpxchg_double_slab mm/slub.c:403 [inline] RIP: 0010:__slab_free+0xdd/0x5d0 mm/slub.c:3023 Code: 00 00 41 f6 40 0b 40 74 61 48 83 7c 24 50 00 0f 85 0a 03 00 00 48 89 da 48 8b 7c 24 48 48 8b 5c 24 58 4c 89 e8 f0 48 0f c7 0f <0f> 84 f1 01 00 00 f3 90 4d 85 f6 0f 84 6e ff ff ff 48 8b 34 24 4c RSP: 0018:ffff888047d46d00 EFLAGS: 00000206 RAX: 0000000000000000 RBX: ffff88804c8e9440 RCX: 0000000080120010 RDX: 0000000000120012 RSI: 0000000000000001 RDI: ffffea0001323a20 RBP: ffff888047d46de0 R08: ffff88800804d640 R09: ffffffff816cb600 R10: ffff88804c8e9440 R11: 0000000000000001 R12: ffffea0001323a00 R13: ffff88804c8e81b0 R14: 0000000000000000 R15: 0000000080120010 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 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 device_add_groups drivers/base/core.c:2098 [inline] device_add_attrs drivers/base/core.c:2257 [inline] device_add+0x138f/0x1c50 drivers/base/core.c:2965 netdev_register_kobject+0x17a/0x3b0 net/core/net-sysfs.c:1997 register_netdevice+0xd6e/0x1480 net/core/dev.c:10033 ieee802154_if_add+0xc93/0x1040 net/mac802154/iface.c:671 ieee802154_add_iface_deprecated+0x3e/0x60 net/mac802154/cfg.c:26 rdev_add_virtual_intf_deprecated net/ieee802154/rdev-ops.h:16 [inline] ieee802154_add_iface+0x44d/0x8f0 net/ieee802154/nl-phy.c:218 genl_family_rcv_msg_doit+0x22d/0x330 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x33c/0x5a0 net/netlink/genetlink.c:800 netlink_rcv_skb+0x14b/0x430 net/netlink/af_netlink.c:2500 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x549/0x7f0 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x90f/0xdf0 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:651 [inline] __sock_sendmsg+0x154/0x190 net/socket.c:663 ____sys_sendmsg+0x70d/0x870 net/socket.c:2378 ___sys_sendmsg+0xf3/0x170 net/socket.c:2432 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2461 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f47ac1ccb19 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:00007f47a9742188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f47ac2dff60 RCX: 00007f47ac1ccb19 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005 RBP: 00007f47ac226f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf3ad6dbf R14: 00007f47a9742300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.228 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:19 [inline] RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:100 [inline] RIP: 0010:queued_spin_lock_slowpath+0x122/0x8c0 kernel/locking/qspinlock.c:326 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 09 07 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 40 8a f8 02 f3 90 73 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e1 00 00 RSP: 0018:ffff88806cf09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffffff87a06080 RCX: ffffffff8127b507 RDX: fffffbfff0f40c11 RSI: 0000000000000004 RDI: ffffffff87a06080 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff87a06083 R10: fffffbfff0f40c10 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f40c10 R14: 0000000000000001 R15: 1ffff1100d9e1348 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a4d2c1c678 CR3: 000000000f7e4000 CR4: 0000000000350ee0 Call Trace: queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x1dc/0x260 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x695/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1450 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x940 drivers/net/wireless/mac80211_hwsim.c:1770 __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:default_idle+0xe/0x20 arch/x86/kernel/process.c:707 Code: 4e ff ff ff 4c 89 e7 e8 20 fa 84 fd eb 8f 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 e9 07 00 00 00 0f 00 2d 64 85 5a 00 fb f4 9d 86 38 00 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 55 41 54 RSP: 0018:ffff888008987e70 EFLAGS: 00000202 RAX: ffffffff83e7b910 RBX: 0000000000000001 RCX: ffffffff83e634ec RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e7bf18 RBP: ffffed100112f000 R08: 0000000000000001 R09: ffff88806cf3c12b R10: ffffed100d9e7825 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff85677708 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0xbf/0x2c0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x3ad/0x520 kernel/sched/idle.c:300 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:396 secondary_startup_64_no_verify+0xbe/0xcb ---------------- Code disassembly (best guess): 0: 86 ad 44 00 eb 9e xchg %ch,-0x6114ffbc(%rbp) 6: 0f 1f 40 00 nopl 0x0(%rax) a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 11: fc ff df 14: 41 54 push %r12 16: 55 push %rbp 17: 53 push %rbx 18: 48 89 fb mov %rdi,%rbx 1b: 48 83 c7 04 add $0x4,%rdi 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 08 jl 0x3f 37: 84 d2 test %dl,%dl 39: 0f 85 b9 01 00 00 jne 0x1f8 3f: 81 .byte 0x81