watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.7:10256] Modules linked in: irq event stamp: 4044139 hardirqs last enabled at (4044138): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4044139): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (4021142): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4021145): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 10256 Comm: syz-executor.7 Not tainted 5.10.161 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] RIP: 0010:__orc_find+0x6f/0xf0 arch/x86/kernel/unwind_orc.c:52 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 48 01 RSP: 0018:ffff88806ce09518 EFLAGS: 00000217 RAX: 1ffffffff0adb5ed RBX: ffffffff856daf6c RCX: ffffffff812fcb1b RDX: 0000000000000000 RSI: ffffffff859a989e RDI: ffffffff856daf40 RBP: ffffffff856daf40 R08: ffffffff859a989e R09: ffffffff859a9928 R10: 0000000000032042 R11: 1ffff1100d9c12b4 R12: ffffffff856daf98 R13: ffffffff856daf40 R14: ffffffff856daf40 R15: dffffc0000000000 FS: 00007f97b0b0c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562d890faa40 CR3: 000000000f386000 CR4: 0000000000350ef0 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:178 [inline] unwind_next_frame+0x2b3/0x1a90 arch/x86/kernel/unwind_orc.c:448 arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 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/0x360 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+0x159/0x360 mm/slub.c:2909 __skb_ext_alloc+0x19/0x90 net/core/skbuff.c:6225 skb_ext_add+0x508/0x670 net/core/skbuff.c:6320 skb_set_kcov_handle include/linux/skbuff.h:4632 [inline] skb_set_kcov_handle include/linux/skbuff.h:4622 [inline] __alloc_skb+0x3c1/0x620 net/core/skbuff.c:253 skb_copy+0x137/0x2f0 net/core/skbuff.c:1522 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb1d/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1499 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x8f0 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:stack_trace_consume_entry+0xb/0x160 kernel/stacktrace.c:82 Code: cb 65 10 00 48 c7 c1 80 39 48 84 31 d2 be 80 01 00 00 48 c7 c7 80 37 48 84 e9 e1 3a 62 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 04 RSP: 0018:ffff888049a870d8 EFLAGS: 00000282 RAX: dffffc0000000000 RBX: ffffffff812fc930 RCX: 1ffff11009350e01 RDX: 1ffff11009350e26 RSI: ffffffff816b83d9 RDI: ffff888049a871a0 RBP: ffff888049a87170 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff11009350e0a R12: ffff888049a871a0 R13: 0000000000000000 R14: ffff88801eda4c80 R15: 0000000000000170 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 mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 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/0x360 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+0x159/0x360 mm/slub.c:2909 ext4_es_alloc_extent fs/ext4/extents_status.c:458 [inline] __es_insert_extent+0x3a9/0x12f0 fs/ext4/extents_status.c:797 __es_remove_extent+0x4a9/0x15d0 fs/ext4/extents_status.c:1353 ext4_es_remove_extent+0x1fa/0x3f0 fs/ext4/extents_status.c:1459 ext4_swap_extents+0x283/0x14c0 fs/ext4/extents.c:5626 move_extent_per_page fs/ext4/move_extent.c:360 [inline] ext4_move_extents+0x1a4f/0x3270 fs/ext4/move_extent.c:673 __ext4_ioctl+0x304d/0x41c0 fs/ext4/ioctl.c:994 ext4_ioctl+0x46/0x90 fs/ext4/ioctl.c:1326 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f97b35b7b19 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:00007f97b0b0c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f97b36cb020 RCX: 00007f97b35b7b19 RDX: 00000000200001c0 RSI: 00000000c028660f RDI: 0000000000000003 RBP: 00007f97b3611f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffccec7c92f R14: 00007f97b0b0c300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10254 Comm: syz-executor.4 Not tainted 5.10.161 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__kasan_check_read+0x4/0x10 mm/kasan/common.c:71 Code: 66 0f 1f 44 00 00 e9 8b 8c b4 02 66 66 2e 0f 1f 84 00 00 00 00 00 48 c7 c0 fb ff ff ff e9 74 8c b4 02 cc cc cc cc 48 8b 0c 24 <89> f6 31 d2 e9 83 22 00 00 0f 1f 00 48 8b 0c 24 89 f6 ba 01 00 00 RSP: 0018:ffff88806cf08f98 EFLAGS: 00000056 RAX: 0000000000000000 RBX: 1ffff1100d9e11fb RCX: ffffffff81265f65 RDX: 0000000000000002 RSI: 0000000000000008 RDI: ffffffff86795660 RBP: 0000000000000009 R08: 0000000000000000 R09: ffffffff86795667 R10: fffffbfff0cf2acc R11: 0000000000000001 R12: ffff88801eda2398 R13: 0000000000000006 R14: ffff88801eda23b8 R15: 0000000000000200 FS: 00007f4c5f6e5700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d131000 CR3: 000000003ab06000 CR4: 0000000000350ee0 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] hlock_class kernel/locking/lockdep.c:196 [inline] mark_lock+0xf5/0x2df0 kernel/locking/lockdep.c:4510 mark_usage kernel/locking/lockdep.c:4453 [inline] __lock_acquire+0x890/0x5b00 kernel/locking/lockdep.c:4908 lock_acquire kernel/locking/lockdep.c:5565 [inline] lock_acquire+0x197/0x490 kernel/locking/lockdep.c:5530 rcu_lock_acquire include/linux/rcupdate.h:258 [inline] rcu_read_lock include/linux/rcupdate.h:651 [inline] __perf_output_begin kernel/events/ring_buffer.c:163 [inline] perf_output_begin_forward+0xb2/0xac0 kernel/events/ring_buffer.c:268 __perf_event_output kernel/events/core.c:7315 [inline] perf_event_output_forward+0xf4/0x280 kernel/events/core.c:7333 __perf_event_overflow+0x213/0x5e0 kernel/events/core.c:8989 perf_swevent_hrtimer+0x37e/0x3f0 kernel/events/core.c:10392 __run_hrtimer kernel/time/hrtimer.c:1583 [inline] __hrtimer_run_queues+0x1ca/0xb50 kernel/time/hrtimer.c:1647 hrtimer_interrupt+0x2fd/0x9b0 kernel/time/hrtimer.c:1709 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1084 [inline] __sysvec_apic_timer_interrupt+0xfb/0x400 arch/x86/kernel/apic/apic.c:1101 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x3e/0xa0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 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 d0 de 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:ffff88806cf09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffffff87930da0 RCX: ffffffff812760b7 RDX: fffffbfff0f261b5 RSI: 0000000000000004 RDI: ffffffff87930da0 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff87930da3 R10: fffffbfff0f261b4 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f261b4 R14: 0000000000000001 R15: 1ffff1100d9e1348 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+0x695/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1450 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x8f0 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:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] RIP: 0010:__orc_find+0x7c/0xf0 arch/x86/kernel/unwind_orc.c:52 Code: e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 <84> d2 75 50 48 63 03 48 01 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec RSP: 0018:ffff88804b7b7290 EFLAGS: 00000206 RAX: 0000000000000003 RBX: ffffffff85747990 RCX: ffffffff819fd705 RDX: 0000000000000000 RSI: ffffffff85a4c816 RDI: ffffffff85747990 RBP: ffffffff85747990 R08: ffffffff85a4c816 R09: ffffffff85a4c870 R10: 0000000000032042 R11: 1ffff110096f6e63 R12: ffffffff85747990 R13: ffffffff85747990 R14: ffffffff85747990 R15: dffffc0000000000 orc_find arch/x86/kernel/unwind_orc.c:178 [inline] unwind_next_frame+0x2b3/0x1a90 arch/x86/kernel/unwind_orc.c:448 arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 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] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x360 mm/slub.c:2909 ext4_es_alloc_extent fs/ext4/extents_status.c:458 [inline] __es_insert_extent+0x3a9/0x12f0 fs/ext4/extents_status.c:797 ext4_es_insert_extent+0x2dc/0xbb0 fs/ext4/extents_status.c:855 ext4_map_blocks+0x501/0x1970 fs/ext4/inode.c:584 _ext4_get_block+0x21e/0x570 fs/ext4/inode.c:794 move_extent_per_page fs/ext4/move_extent.c:380 [inline] ext4_move_extents+0x1c40/0x3270 fs/ext4/move_extent.c:673 __ext4_ioctl+0x304d/0x41c0 fs/ext4/ioctl.c:994 ext4_ioctl+0x46/0x90 fs/ext4/ioctl.c:1326 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f4c62190b19 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:00007f4c5f6e5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4c622a4020 RCX: 00007f4c62190b19 RDX: 00000000200001c0 RSI: 00000000c028660f RDI: 0000000000000003 RBP: 00007f4c621eaf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdad12174f R14: 00007f4c5f6e5300 R15: 0000000000022000 hpet: Lost 8 RTC interrupts hpet: Lost 8 RTC interrupts ---------------- Code disassembly (best guess): 0: 72 4d jb 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 50 jne 0x8b 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1