watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.4:5642] Modules linked in: irq event stamp: 8160329 hardirqs last enabled at (8160328): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (8160329): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (8157342): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (8157345): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5642 Comm: syz-executor.4 Not tainted 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_const_cmp2+0x4/0x20 kernel/kcov.c:277 Code: 00 00 00 00 00 90 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9 ea fe ff ff 66 2e 0f 1f 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 RSP: 0018:ffff88806ce09cc0 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff83bf570a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008 RBP: ffff888042ca83c0 R08: 0000000000000000 R09: ffff88801e0d0d5f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000080 R13: ffff888042ca8430 R14: ffff88801e0d0d00 R15: 0000000000000000 FS: 00007f9e0fad0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020009000 CR3: 000000000d036000 CR4: 0000000000350ef0 Call Trace: ieee80211_tpt_led_trig_rx net/mac80211/led.h:87 [inline] ieee80211_rx_list+0x76a/0x2370 net/mac80211/rx.c:4842 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:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:cmpxchg_double_slab mm/slub.c:402 [inline] RIP: 0010:__slab_free+0xb5/0x5d0 mm/slub.c:3023 Code: 85 ed 89 c6 41 0f 94 c1 66 45 85 ff 74 08 45 31 f6 45 84 c9 74 0c 45 31 f6 40 84 f6 0f 84 e7 00 00 00 48 8b 8c 24 88 00 00 00 <41> f6 40 0b 40 74 61 48 83 7c 24 50 00 0f 85 0a 03 00 00 48 89 da RSP: 0018:ffff888049acf9a0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000c000c RCX: 00000000800c000b RDX: ffff888019616780 RSI: 0000000000000000 RDI: ffff888008805a00 RBP: ffff888049acfa78 R08: ffff888008805a00 R09: ffffffff816c9401 R10: ffff888019616780 R11: 0000000000000001 R12: ffffea0000658580 R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000c000b 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] kmem_cache_alloc_bulk+0x168/0x320 mm/slub.c:3343 io_alloc_req io_uring/io_uring.c:1977 [inline] io_submit_sqes+0x6fe6/0x8610 io_uring/io_uring.c:7380 __do_sys_io_uring_enter+0x6b5/0x18c0 io_uring/io_uring.c:9920 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f9e1255ab19 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:00007f9e0fad0188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f9e1266df60 RCX: 00007f9e1255ab19 RDX: 0000000000000000 RSI: 00000000000058ab RDI: 0000000000000003 RBP: 00007f9e125b4f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd4769b03f R14: 00007f9e0fad0300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5637 Comm: syz-executor.1 Not tainted 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x4/0x20 kernel/kcov.c:270 Code: 00 00 00 0f 1f 00 48 8b 0c 24 48 89 f2 48 89 fe bf 06 00 00 00 e9 0c ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 48 8b 0c 24 <40> 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9 ea fe ff ff 66 2e 0f 1f RSP: 0018:ffff88806cf09de8 EFLAGS: 00000046 RAX: 0000000000000001 RBX: ffff88806cf2eac0 RCX: ffffffff813121ad RDX: fffffbfff0acebda RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88806cf2f400 R08: 0000000000000000 R09: ffffffff85675ecf R10: fffffbfff0acebd9 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560affc6b678 CR3: 000000001cdf6000 CR4: 0000000000350ee0 Call Trace: trace_hrtimer_start include/trace/events/timer.h:199 [inline] debug_activate kernel/time/hrtimer.c:476 [inline] enqueue_hrtimer+0x5d/0x2e0 kernel/time/hrtimer.c:982 __run_hrtimer kernel/time/hrtimer.c:1603 [inline] __hrtimer_run_queues+0x9cb/0xb40 kernel/time/hrtimer.c:1650 hrtimer_interrupt+0x2fd/0x9b0 kernel/time/hrtimer.c:1712 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1083 [inline] __sysvec_apic_timer_interrupt+0xfb/0x310 arch/x86/kernel/apic/apic.c:1100 asm_call_irq_on_stack+0x12/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0x7f/0xa0 arch/x86/kernel/apic/apic.c:1094 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: 44 db 7e e8 39 91 ff ff b8 ff ff ff ff 48 83 c4 20 65 0f c1 05 e8 44 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:ffff8880472175f8 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff11008e42ec1 RCX: 000000006f935260 RDX: 1ffff110032ab470 RSI: e2cac880f9f1263e RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff868686e7 R10: 0000000000000246 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff84ff8c20 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:303 [inline] rcu_read_lock include/linux/rcupdate.h:717 [inline] lock_page_memcg+0x65/0x270 mm/memcontrol.c:2140 page_remove_rmap+0x21/0x7c0 mm/rmap.c:1328 zap_pte_range mm/memory.c:1287 [inline] zap_pmd_range mm/memory.c:1404 [inline] zap_pud_range mm/memory.c:1433 [inline] zap_p4d_range mm/memory.c:1454 [inline] unmap_page_range+0x110f/0x1fe0 mm/memory.c:1475 unmap_single_vma+0x198/0x300 mm/memory.c:1520 unmap_vmas+0x16d/0x300 mm/memory.c:1552 exit_mmap+0x27f/0x4f0 mm/mmap.c:3235 __mmput kernel/fork.c:1101 [inline] mmput+0xca/0x340 kernel/fork.c:1122 exit_mm kernel/exit.c:536 [inline] do_exit+0xa96/0x2600 kernel/exit.c:847 do_group_exit+0x125/0x310 kernel/exit.c:982 get_signal+0x4bc/0x2350 kernel/signal.c:2759 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x10f/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fcf7dd5cb19 Code: Unable to access opcode bytes at RIP 0x7fcf7dd5caef. RSP: 002b:00007fcf7b2d2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000004 RBX: 00007fcf7de6ff60 RCX: 00007fcf7dd5cb19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001 RBP: 00007fcf7ddb6f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef2d8a22f R14: 00007fcf7b2d2300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 90 48 8b 0c 24 add %dl,0x240c8b48(%rax) a: 40 0f b6 d6 movzbl %sil,%edx e: 40 0f b6 f7 movzbl %dil,%esi 12: bf 01 00 00 00 mov $0x1,%edi 17: e9 ea fe ff ff jmpq 0xffffff06 1c: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 23: 00 00 00 26: 48 8b 0c 24 mov (%rsp),%rcx * 2a: 0f b7 d6 movzwl %si,%edx <-- trapping instruction 2d: 0f b7 f7 movzwl %di,%esi 30: bf 03 00 00 00 mov $0x3,%edi 35: e9 cc fe ff ff jmpq 0xffffff06 3a: 66 data16 3b: 66 data16 3c: 2e cs 3d: 0f .byte 0xf 3e: 1f (bad) 3f: 84 .byte 0x84