netlink: 88 bytes leftover after parsing attributes in process `syz-executor.3'. watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:4526] Modules linked in: irq event stamp: 4004787 hardirqs last enabled at (4004786): [] slab_free_hook mm/slub.c:1530 [inline] hardirqs last enabled at (4004786): [] slab_free_freelist_hook+0x158/0x180 mm/slub.c:1576 hardirqs last disabled at (4004787): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (3934654): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (3934659): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4526 Comm: syz-executor.2 Not tainted 5.10.162 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0xa/0x160 kernel/stacktrace.c:82 Code: e8 1b 67 10 00 48 c7 c1 40 39 48 84 31 d2 be 80 01 00 00 48 c7 c7 40 37 48 84 e9 d1 9b 5d 00 cc 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 c1 ea 03 48 83 ec 08 0f b6 RSP: 0018:ffff88806ce09720 EFLAGS: 00000286 RAX: dffffc0000000000 RBX: ffffffff812fbf70 RCX: 1ffff1100d9c1201 RDX: 1ffff1100d9c12ee RSI: ffffffff8130ef18 RDI: ffff88806ce097e0 RBP: ffff88806ce097b0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9c12d2 R12: ffff88806ce097e0 R13: 0000000000000000 R14: ffff8880433199c0 R15: ffff888044e92700 FS: 00007f5526737700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556e6b708 CR3: 0000000044a84000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x73/0xf0 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track+0x1c/0x30 mm/kasan/common.c:56 kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355 __kasan_slab_free+0x110/0x160 mm/kasan/common.c:422 slab_free_hook mm/slub.c:1542 [inline] slab_free_freelist_hook+0xa9/0x180 mm/slub.c:1576 slab_free mm/slub.c:3149 [inline] kmem_cache_free+0xa7/0x310 mm/slub.c:3165 __skb_ext_put+0x120/0x2d0 net/core/skbuff.c:6381 skb_ext_reset include/linux/skbuff.h:4249 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x1053/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1431 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1770 __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1583 [inline] __hrtimer_run_queues+0x5e8/0xb50 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __do_softirq+0x1b8/0x86b 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:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:strcpy+0x47/0xb0 lib/string.c:93 Code: 89 f7 48 89 dd 48 83 c6 01 48 83 c3 01 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 04 84 c0 75 3c 48 89 e8 <48> 89 ea 44 0f b6 66 ff 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 RSP: 0018:ffff888016c8f618 EFLAGS: 00000246 RAX: ffffe8ffffc243a0 RBX: ffffe8ffffc243a1 RCX: ffffc9000300b000 RDX: 0000000000000000 RSI: ffffffff8447c841 RDI: ffffffff8447c840 RBP: ffffe8ffffc243a0 R08: 0000000000000001 R09: ffffe8ffffc243ac R10: ffffe8ffffc24388 R11: 1ffff1100d9c6fb3 R12: ffffffff84ff8320 R13: dffffc0000000000 R14: ffffe8ffffc243a0 R15: ffff888016c8f700 strcpy include/linux/string.h:481 [inline] perf_trace_lock+0x270/0x490 include/trace/events/lock.h:39 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x470/0x6b0 kernel/locking/lockdep.c:5576 rcu_lock_release include/linux/rcupdate.h:263 [inline] rcu_read_unlock include/linux/rcupdate.h:705 [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+0x1d6/0x340 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 kmalloc include/linux/slab.h:557 [inline] kzalloc include/linux/slab.h:664 [inline] ops_init+0x247/0x680 net/core/net_namespace.c:143 setup_net+0x2d8/0x810 net/core/net_namespace.c:351 copy_net_ns+0x2ca/0x5e0 net/core/net_namespace.c:492 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x39e/0x480 kernel/nsproxy.c:179 copy_process+0x2549/0x67d0 kernel/fork.c:2118 kernel_clone+0xe7/0xa20 kernel/fork.c:2498 __do_sys_clone3+0x1e5/0x320 kernel/fork.c:2773 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f55291c1b19 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:00007f5526737188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f55292d4f60 RCX: 00007f55291c1b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000200 RBP: 00007f552921bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf2f56cef R14: 00007f5526737300 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: e8 1b 67 10 00 callq 0x106720 5: 48 c7 c1 40 39 48 84 mov $0xffffffff84483940,%rcx c: 31 d2 xor %edx,%edx e: be 80 01 00 00 mov $0x180,%esi 13: 48 c7 c7 40 37 48 84 mov $0xffffffff84483740,%rdi 1a: e9 d1 9b 5d 00 jmpq 0x5d9bf0 1f: cc int3 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 55 push %rbp <-- trapping instruction 2b: 53 push %rbx 2c: 48 89 fb mov %rdi,%rbx 2f: 48 83 c7 10 add $0x10,%rdi 33: 48 89 fa mov %rdi,%rdx 36: 48 c1 ea 03 shr $0x3,%rdx 3a: 48 83 ec 08 sub $0x8,%rsp 3e: 0f .byte 0xf 3f: b6 .byte 0xb6