watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:6304] Modules linked in: irq event stamp: 4585409 hardirqs last enabled at (4585408): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4585409): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4572682): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4572687): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 6304 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:ieee80211_rx_get_bigtk+0xfa/0x4b0 net/mac80211/rx.c:1893 Code: 28 00 31 ff 89 c6 89 44 24 04 e8 61 c9 82 fd 8b 44 24 04 85 c0 0f 85 05 01 00 00 e8 00 d0 82 fd 4d 85 ff 74 1b e8 f6 cf 82 fd <4c> 89 f8 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f e9 20 51 62 00 RSP: 0018:ffff88806ce098d8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff83bdf109 RDX: ffff88800fba4ec0 RSI: ffffffff83bdee8a RDI: 0000000000000005 RBP: ffff88806ce09d98 R08: 0000000000000001 R09: ffff888046658d5f R10: 0000000000000000 R11: 0000000000000001 R12: 00000000000000bf R13: ffff888046750bc0 R14: ffff88806ce09db8 R15: 0000000000000000 FS: 00007ff8bac97700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbd265ba998 CR3: 00000000472e6000 CR4: 0000000000350ef0 Call Trace: ieee80211_rx_h_decrypt net/mac80211/rx.c:2020 [inline] ieee80211_rx_handlers+0x3631/0xa3f0 net/mac80211/rx.c:3866 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3918 [inline] ieee80211_prepare_and_rx_handle+0x17d4/0x5890 net/mac80211/rx.c:4605 __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:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196 Code: ff ff ff b8 08 00 00 00 4d 8b 17 49 8b 16 48 0f bd c8 48 63 c9 e9 5e ff ff ff 4c 01 d2 49 89 17 e9 cd fd ff ff 90 48 8b 34 24 <65> 48 8b 14 25 80 6f 02 00 65 8b 05 ac b0 c1 7e a9 00 01 ff 00 74 RSP: 0018:ffff88804b9f6f28 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000081f000 RDX: 1ffff1100973edf9 RSI: ffffffff8148afd3 RDI: 0000000000000005 RBP: 000000000000002c R08: 0000000000000000 R09: ffffffff8567770f R10: 0000000000000000 R11: 0000000000000001 R12: ffff88806ce37cc0 R13: ffff88804b9f6fc8 R14: ffffffff84effe20 R15: ffff88804b9f7008 perf_trace_buf_alloc+0xc3/0x1a0 kernel/trace/trace_event_perf.c:413 perf_trace_lock+0x13a/0x490 include/trace/events/lock.h:39 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x470/0x680 kernel/locking/lockdep.c:5577 rcu_lock_release include/linux/rcupdate.h:308 [inline] rcu_read_unlock include/linux/rcupdate.h:771 [inline] mod_objcg_state mm/slab.h:314 [inline] memcg_slab_free_hook mm/slab.h:383 [inline] memcg_slab_free_hook mm/slab.h:351 [inline] do_slab_free mm/slub.c:3105 [inline] ___cache_free+0x1d6/0x360 mm/slub.c:3156 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 device_add_groups drivers/base/core.c:2098 [inline] device_add_attrs drivers/base/core.c:2246 [inline] device_add+0x7a9/0x1c50 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 register_netdev+0x2d/0x50 net/core/dev.c:10157 loopback_net_init+0x76/0x170 drivers/net/loopback.c:216 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: 0033:0x7ff8bd721b19 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:00007ff8bac97188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007ff8bd834f60 RCX: 00007ff8bd721b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007ff8bd77bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff9d0607df R14: 00007ff8bac97300 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: 28 00 sub %al,(%rax) 2: 31 ff xor %edi,%edi 4: 89 c6 mov %eax,%esi 6: 89 44 24 04 mov %eax,0x4(%rsp) a: e8 61 c9 82 fd callq 0xfd82c970 f: 8b 44 24 04 mov 0x4(%rsp),%eax 13: 85 c0 test %eax,%eax 15: 0f 85 05 01 00 00 jne 0x120 1b: e8 00 d0 82 fd callq 0xfd82d020 20: 4d 85 ff test %r15,%r15 23: 74 1b je 0x40 25: e8 f6 cf 82 fd callq 0xfd82d020 * 2a: 4c 89 f8 mov %r15,%rax <-- trapping instruction 2d: 48 83 c4 08 add $0x8,%rsp 31: 5b pop %rbx 32: 5d pop %rbp 33: 41 5c pop %r12 35: 41 5d pop %r13 37: 41 5e pop %r14 39: 41 5f pop %r15 3b: e9 20 51 62 00 jmpq 0x625160