IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready udc-core: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_probe_driver returned -19 syz-executor.2 (4072) used greatest stack depth: 23656 bytes left watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.3:4038] Modules linked in: irq event stamp: 4833217 hardirqs last enabled at (4833216): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4833217): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4792154): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4792161): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4038 Comm: syz-executor.3 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x20 kernel/kcov.c:284 Code: 84 00 00 00 00 00 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 cc fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 ae fe ff ff 66 66 2e 0f 1f 84 00 00 RSP: 0018:ffff88806ce09b70 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff83c2ea50 RDX: ffff88800e248000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000fff R09: ffff88806ce09bd0 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804a8d5640 R13: ffff88804a8d5668 R14: ffff88806ce09bd0 R15: 0000000000000fff FS: 00007fc8e9f68700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c015fe4000 CR3: 0000000046dcc000 CR4: 0000000000350ef0 Call Trace: rcu_read_unlock include/linux/rcupdate.h:767 [inline] __ieee80211_beacon_get+0x7e0/0x1440 net/mac80211/tx.c:4971 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:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __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:lock_acquire+0x1b9/0x470 kernel/locking/lockdep.c:5534 Code: 35 db 7e e8 39 91 ff ff b8 ff ff ff ff 48 83 c4 20 65 0f c1 05 28 35 db 7e 83 f8 01 4c 8b 54 24 08 0f 85 48 02 00 00 41 52 9d <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffff8880488ff490 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff1100911fe94 RCX: 000000007d4b7573 RDX: 1ffff11001c49128 RSI: a0d010d71bf379d5 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8686c6a7 R10: 0000000000000246 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff84ff9220 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:303 [inline] rcu_read_lock include/linux/rcupdate.h:717 [inline] percpu_ref_put_many.constprop.0+0x2b/0x110 include/linux/percpu-refcount.h:317 percpu_ref_put include/linux/percpu-refcount.h:338 [inline] obj_cgroup_put include/linux/memcontrol.h:518 [inline] memcg_slab_free_hook mm/slab.h:385 [inline] memcg_slab_free_hook mm/slab.h:351 [inline] do_slab_free mm/slub.c:3105 [inline] ___cache_free+0x1de/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 sock_alloc_inode+0x18/0x1c0 net/socket.c:253 alloc_inode+0x63/0x240 fs/inode.c:233 new_inode_pseudo+0x14/0xe0 fs/inode.c:968 sock_alloc+0x3c/0x270 net/socket.c:573 __sock_create+0xbd/0x7f0 net/socket.c:1399 inet_ctl_sock_create+0x89/0x1e0 net/ipv4/af_inet.c:1664 igmp_net_init+0xcc/0x160 net/ipv4/igmp.c:3033 ops_init+0xbb/0x6b0 net/core/net_namespace.c:156 setup_net+0x2f4/0x900 net/core/net_namespace.c:348 copy_net_ns+0x2c0/0x5d0 net/core/net_namespace.c:518 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: 0033:0x7fc8ec9f2b19 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:00007fc8e9f68188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fc8ecb05f60 RCX: 00007fc8ec9f2b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007fc8eca4cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcaa9b5f3f R14: 00007fc8e9f68300 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:711 ---------------- Code disassembly (best guess): 0: 84 00 test %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 00 add %al,(%rax) 6: 48 8b 0c 24 mov (%rsp),%rcx a: 0f b7 d6 movzwl %si,%edx d: 0f b7 f7 movzwl %di,%esi 10: bf 03 00 00 00 mov $0x3,%edi 15: e9 cc fe ff ff jmpq 0xfffffee6 1a: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 21: 00 00 00 00 25: 90 nop 26: 48 8b 0c 24 mov (%rsp),%rcx * 2a: 89 f2 mov %esi,%edx <-- trapping instruction 2c: 89 fe mov %edi,%esi 2e: bf 05 00 00 00 mov $0x5,%edi 33: e9 ae fe ff ff jmpq 0xfffffee6 38: 66 data16 39: 66 data16 3a: 2e cs 3b: 0f .byte 0xf 3c: 1f (bad) 3d: 84 00 test %al,(%rax)