EXT4-fs (loop6): re-mounted. Opts: (null) watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:4590] Modules linked in: irq event stamp: 3717937 hardirqs last enabled at (3717936): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (3717937): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (3687878): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (3687881): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4590 Comm: syz-executor.1 Not tainted 5.10.147 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:strncpy+0xa/0xb0 lib/string.c:115 Code: 86 fe ff ff 48 89 ef e8 54 a8 6d ff e9 27 fe ff ff e8 4a a8 6d ff e9 f1 fd ff ff cc cc cc cc cc 41 56 49 89 fe 41 55 41 54 55 <53> 48 83 ec 08 48 85 d2 74 5c 4c 8d 2c 17 48 89 fb 49 bc 00 00 00 RSP: 0018:ffff88806ce09a50 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000000e0 RCX: ffffffff816e6f9f RDX: 0000000000000010 RSI: ffffffff844e3920 RDI: ffff88804741759c RBP: ffff888047417440 R08: 0000000000000001 R09: ffff8880474174d3 R10: ffffed1008e82e9a R11: 0000000000000001 R12: ffff88804741759c R13: ffff888047417488 R14: ffff88804741759c R15: ffff8880462bf280 FS: 00007f4b8fae3700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000146 CR3: 0000000044ff4000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: strncpy include/linux/string.h:300 [inline] create_object.isra.0+0x5eb/0xa20 mm/kmemleak.c:605 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+0x169/0x370 mm/slub.c:2932 __alloc_skb+0x6d/0x620 net/core/skbuff.c:198 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:1494 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1711 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1765 __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:1788 __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:__preempt_count_sub arch/x86/include/asm/preempt.h:84 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x40 kernel/locking/spinlock.c:191 Code: 3e 00 0f 1f 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 ca 37 45 fd 48 89 ef e8 a2 f1 45 fd f6 c7 02 75 10 53 9d <65> ff 0d b4 b2 20 7c 5b 5d e9 6d 83 3e 00 e8 a8 b6 64 fd eb e9 66 RSP: 0018:ffff88801cf87778 EFLAGS: 00000212 RAX: 000000000036cdff RBX: 0000000000000212 RCX: 1ffffffff0cf4382 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e1bc98 RBP: ffff88800f1736a8 R08: 0000000000000001 R09: ffffffff8679767f R10: fffffbfff0cf2ecf R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88800f1731f8 R14: ffffffff828ffdc0 R15: ffff88800f1736e8 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] devres_for_each_res drivers/base/devres.c:215 [inline] devres_for_each_res+0x181/0x1c0 drivers/base/devres.c:192 dev_cache_fw_image+0x9f/0x3d0 drivers/base/firmware_loader/main.c:1347 dpm_for_each_dev drivers/base/power/main.c:1975 [inline] dpm_for_each_dev+0x59/0xb0 drivers/base/power/main.c:1966 device_cache_fw_images drivers/base/firmware_loader/main.c:1415 [inline] fw_pm_notify+0xdc/0x120 drivers/base/firmware_loader/main.c:1466 notifier_call_chain kernel/notifier.c:83 [inline] notifier_call_chain_robust kernel/notifier.c:118 [inline] blocking_notifier_call_chain_robust kernel/notifier.c:302 [inline] blocking_notifier_call_chain_robust+0x127/0x2a0 kernel/notifier.c:290 pm_notifier_call_chain_robust+0x26/0x60 kernel/power/main.c:87 snapshot_open+0x20f/0x2b0 kernel/power/user.c:86 misc_open+0x375/0x4a0 drivers/char/misc.c:141 chrdev_open+0x268/0x6e0 fs/char_dev.c:414 do_dentry_open+0x4b7/0x1090 fs/open.c:817 do_open fs/namei.c:3245 [inline] path_openat+0x193d/0x26d0 fs/namei.c:3364 do_filp_open+0x17e/0x3d0 fs/namei.c:3391 do_sys_openat2+0x171/0x420 fs/open.c:1180 do_sys_open fs/open.c:1196 [inline] __do_sys_openat fs/open.c:1212 [inline] __se_sys_openat fs/open.c:1207 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1207 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f4b9256db19 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:00007f4b8fae3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f4b92680f60 RCX: 00007f4b9256db19 RDX: 0000000000040001 RSI: 0000000020000140 RDI: ffffffffffffff9c RBP: 00007f4b925c7f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2bdd419f R14: 00007f4b8fae3300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4543 Comm: syz-executor.2 Not tainted 5.10.147 #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:ffff88806cf09358 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8150ef0e RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff86797667 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88806cf09600 R13: ffff8880453e3000 R14: ffff88806cf09988 R15: 0000000000000030 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcce51cfd8 CR3: 000000000f36e000 CR4: 0000000000350ee0 Call Trace: rcu_read_unlock include/linux/rcupdate.h:701 [inline] __perf_output_begin kernel/events/ring_buffer.c:259 [inline] perf_output_begin_forward+0x6de/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 60 e2 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: ffffffff87932ce0 RCX: ffffffff81275d27 RDX: fffffbfff0f2659d RSI: 0000000000000004 RDI: ffffffff87932ce0 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff87932ce3 R10: fffffbfff0f2659c R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f2659c 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:1445 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1711 mac80211_hwsim_beacon_tx+0x494/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1765 __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:1788 __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:add_mm_rss_vec mm/memory.c:490 [inline] RIP: 0010:zap_pte_range mm/memory.c:1328 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1393 [inline] RIP: 0010:zap_pud_range mm/memory.c:1422 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1443 [inline] RIP: 0010:unmap_page_range+0x1224/0x1ea0 mm/memory.c:1464 Code: 00 e8 40 06 e1 ff 48 89 d8 48 c1 e8 03 42 0f b6 14 30 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c7 08 00 00 4c 63 2b <31> ff 44 89 ee e8 62 ff e0 ff 45 85 ed 0f 85 8e 00 00 00 e8 04 06 RSP: 0018:ffff888020577768 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffff888020577870 RCX: ffffffff815f1b6a RDX: 0000000000000000 RSI: ffffffff815f2340 RDI: ffff8880205683e8 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888020568007 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888044691fe0 R13: fffffffffffffffc R14: dffffc0000000000 R15: ffff888044691c00 unmap_single_vma+0x198/0x300 mm/memory.c:1509 unmap_vmas+0x16d/0x300 mm/memory.c:1541 exit_mmap+0x27f/0x4f0 mm/mmap.c:3232 __mmput kernel/fork.c:1089 [inline] mmput+0xca/0x340 kernel/fork.c:1110 exit_mm kernel/exit.c:487 [inline] do_exit+0xb21/0x2740 kernel/exit.c:798 do_group_exit+0x125/0x310 kernel/exit.c:908 get_signal+0x469/0x2210 kernel/signal.c:2748 arch_do_signal+0x8c/0x1c60 arch/x86/kernel/signal.c:805 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0xf7/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fa677984b19 Code: Unable to access opcode bytes at RIP 0x7fa677984aef. RSP: 002b:00007fa674efa188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000003 RBX: 00007fa677a97f60 RCX: 00007fa677984b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007fa6779def6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2af26f1f R14: 00007fa674efa300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: ff 48 89 decl -0x77(%rax) 3: ef out %eax,(%dx) 4: e8 54 a8 6d ff callq 0xff6da85d 9: e9 27 fe ff ff jmpq 0xfffffe35 e: e8 4a a8 6d ff callq 0xff6da85d 13: e9 f1 fd ff ff jmpq 0xfffffe09 18: cc int3 19: cc int3 1a: cc int3 1b: cc int3 1c: cc int3 1d: 41 56 push %r14 1f: 49 89 fe mov %rdi,%r14 22: 41 55 push %r13 24: 41 54 push %r12 26: 55 push %rbp * 27: 53 push %rbx <-- trapping instruction 28: 48 83 ec 08 sub $0x8,%rsp 2c: 48 85 d2 test %rdx,%rdx 2f: 74 5c je 0x8d 31: 4c 8d 2c 17 lea (%rdi,%rdx,1),%r13 35: 48 89 fb mov %rdi,%rbx 38: 49 rex.WB 39: bc .byte 0xbc 3a: 00 00 add %al,(%rax)