RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00007fa5f1606f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf7bd386f R14: 00007fa5eeb01300 R15: 0000000000022000 watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.6:4630] Modules linked in: irq event stamp: 4980955 hardirqs last enabled at (4980954): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4980955): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4971942): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4971945): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4630 Comm: syz-executor.6 Not tainted 5.10.238 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_get_return_address arch/x86/kernel/unwind_orc.c:323 [inline] RIP: 0010:unwind_get_return_address+0x3b/0xa0 arch/x86/kernel/unwind_orc.c:318 Code: 03 53 48 89 fb 0f b6 04 02 84 c0 74 04 3c 03 7e 59 8b 03 85 c0 75 09 31 c0 5b 5d e9 ff bf 0f 03 48 b8 00 00 00 00 00 fc ff df <48> 8d 6b 48 48 89 ea 48 c1 ea 03 80 3c 02 00 75 36 48 8b 7b 48 e8 RSP: 0018:ffff88806cf09938 EFLAGS: 00000202 RAX: dffffc0000000000 RBX: ffff88806cf09950 RCX: 1ffff1100d9e1301 RDX: 1ffff1100d9e132a RSI: ffff88806cf09db8 RDI: ffff88806cf09950 RBP: ffff88806cf099d8 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e1317 R12: ffff88806cf09a08 R13: 0000000000000000 R14: ffff88804992cec0 R15: ffff888017f74000 FS: 00007f6664b58700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556e72a9f0b8 CR3: 00000000195f6000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x99/0xf0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 __save_stack_trace mm/kmemleak.c:563 [inline] create_object.isra.0+0x372/0xa20 mm/kmemleak.c:618 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] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:200 skb_copy+0x183/0x350 net/core/skbuff.c:1530 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb50/0x1410 drivers/net/wireless/mac80211_hwsim.c:1499 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: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:virt_to_head_page include/linux/mm.h:860 [inline] RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:130 [inline] RIP: 0010:qlist_free_all+0x7e/0xe0 mm/kasan/quarantine.c:167 Code: e8 27 c6 ff ff 4d 85 ff 74 44 4c 89 fe 48 89 df 48 85 db 75 cc 48 89 f0 4c 01 e8 72 5a 4c 89 f2 48 2b 15 d5 21 5c 03 48 01 d0 <48> c1 e8 0c 48 c1 e0 06 48 03 05 b3 21 5c 03 48 8b 50 08 48 8d 4a RSP: 0018:ffff88804967f6c0 EFLAGS: 00000207 RAX: 000000000ea9f950 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000777f80000000 RSI: ffff88800ea9f950 RDI: 0000000000000000 RBP: dffffc0000000000 R08: 0000000000000011 R09: ffffffff816cd901 R10: ffff88800ea9ed80 R11: 0000000000000001 R12: ffff88804967f6f8 R13: 0000000080000000 R14: ffffffff80000000 R15: ffff88800ea9f950 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:552 [inline] __memcg_init_list_lru_node+0x7f/0x1e0 mm/list_lru.c:339 memcg_init_list_lru_node mm/list_lru.c:362 [inline] memcg_init_list_lru mm/list_lru.c:448 [inline] __list_lru_init+0x44d/0x890 mm/list_lru.c:615 alloc_super+0x8b8/0xa90 fs/super.c:272 sget_fc+0x110/0x860 fs/super.c:544 vfs_get_super fs/super.c:1209 [inline] get_tree_nodev+0x24/0x1d0 fs/super.c:1244 mqueue_get_tree+0xf2/0x130 ipc/mqueue.c:434 vfs_get_tree+0x8e/0x300 fs/super.c:1572 fc_mount+0x13/0xc0 fs/namespace.c:974 mq_create_mount ipc/mqueue.c:484 [inline] mq_init_ns+0x39e/0x530 ipc/mqueue.c:1700 create_ipc_ns ipc/namespace.c:58 [inline] copy_ipcs+0x2f5/0x480 ipc/namespace.c:84 create_new_namespaces+0x210/0xb20 kernel/nsproxy.c:90 copy_namespaces+0x3fb/0x4f0 kernel/nsproxy.c:179 copy_process+0x393a/0x78b0 kernel/fork.c:2214 kernel_clone+0xe7/0x980 kernel/fork.c:2582 __do_sys_clone3+0x1e5/0x320 kernel/fork.c:2857 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f66675e2b19 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:00007f6664b58188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f66676f5f60 RCX: 00007f66675e2b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007f666763cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1324f6af R14: 00007f6664b58300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.238 #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 f0 80 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:ffff88806ce09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffffff87a0a080 RCX: ffffffff8127be57 RDX: fffffbfff0f41411 RSI: 0000000000000004 RDI: ffffffff87a0a080 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff87a0a083 R10: fffffbfff0f41410 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f41410 R14: 0000000000000001 R15: 1ffff1100d9c1348 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8a4aaccae0 CR3: 000000001aef0000 CR4: 0000000000350ef0 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+0x6c8/0x1410 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: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:default_idle+0xe/0x20 arch/x86/kernel/process.c:712 Code: 4e ff ff ff 4c 89 e7 e8 90 a2 83 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 24 0c 59 00 fb f4 1d 0c 37 00 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 55 41 54 RSP: 0018:ffffffff84e07e38 EFLAGS: 00000202 RAX: ffffffff83e93390 RBX: 0000000000000000 RCX: ffffffff83e7af2c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e93998 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88806ce3c12b R10: ffffed100d9c7825 R11: 0000000000000001 R12: 0000000000000000 R13: ffffffff85678908 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+0x3b3/0x520 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:402 start_kernel+0x464/0x489 init/main.c:1046 secondary_startup_64_no_verify+0xbe/0xcb ---------------- Code disassembly (best guess): 0: 03 53 48 add 0x48(%rbx),%edx 3: 89 fb mov %edi,%ebx 5: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 9: 84 c0 test %al,%al b: 74 04 je 0x11 d: 3c 03 cmp $0x3,%al f: 7e 59 jle 0x6a 11: 8b 03 mov (%rbx),%eax 13: 85 c0 test %eax,%eax 15: 75 09 jne 0x20 17: 31 c0 xor %eax,%eax 19: 5b pop %rbx 1a: 5d pop %rbp 1b: e9 ff bf 0f 03 jmpq 0x30fc01f 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 48 8d 6b 48 lea 0x48(%rbx),%rbp <-- trapping instruction 2e: 48 89 ea mov %rbp,%rdx 31: 48 c1 ea 03 shr $0x3,%rdx 35: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 39: 75 36 jne 0x71 3b: 48 8b 7b 48 mov 0x48(%rbx),%rdi 3f: e8 .byte 0xe8