EXT4-fs (loop2): Invalid log cluster size: 262150 watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.3:4333] Modules linked in: irq event stamp: 5225261 hardirqs last enabled at (5225260): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5225261): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (5216392): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5216395): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4333 Comm: syz-executor.3 Not tainted 5.10.229 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 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: 38 00 0f 1f 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 7a 66 3f fd 48 89 ef e8 d2 20 40 fd f6 c7 02 75 10 53 9d <65> ff 0d e4 89 1a 7c 5b 5d e9 5d 5a 38 00 e8 88 46 5f fd eb e9 66 RSP: 0018:ffff88806ce09a98 EFLAGS: 00000246 RAX: 00000000004fbb24 RBX: 0000000000000246 RCX: 1ffffffff0d0d5b2 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e7e568 RBP: ffffffff850a7600 R08: 0000000000000001 R09: ffffffff8686a6e7 R10: fffffbfff0d0d4dc R11: 0000000000000001 R12: 0000000000082a20 R13: 0000000000000200 R14: 00000000ffffffff R15: 0000000000000000 FS: 00007f2d2c0da700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555585460c58 CR3: 0000000047b9a000 CR4: 0000000000350ef0 Call Trace: 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] __kmalloc_node_track_caller+0x1a6/0x3b0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:143 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:211 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:447 netdev_alloc_skb include/linux/skbuff.h:2854 [inline] dev_alloc_skb include/linux/skbuff.h:2867 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __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:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __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:conv_uni_to_pc+0xd2/0x250 drivers/tty/vt/consolemap.c:831 Code: 00 00 0f 84 26 01 00 00 e8 1b 7b 16 ff 49 8d bc 24 68 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 55 01 00 00 49 8b ac 24 68 05 00 00 48 b8 00 00 00 00 00 fc RSP: 0018:ffff8880474b7940 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000092 RCX: ffffc90004614000 RDX: 1ffff1100107c0ad RSI: ffffffff822a4365 RDI: ffff8880083e0568 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000f000 R11: 0000000000000001 R12: ffff8880083e0000 R13: ffff8880083e0000 R14: 00000000ffffff00 R15: dffffc0000000000 vc_con_write_normal drivers/tty/vt/vt.c:2811 [inline] do_con_write+0x637/0x1d70 drivers/tty/vt/vt.c:2956 con_write+0x22/0xc0 drivers/tty/vt/vt.c:3296 process_output_block drivers/tty/n_tty.c:591 [inline] n_tty_write+0x416/0xfe0 drivers/tty/n_tty.c:2384 do_tty_write drivers/tty/tty_io.c:1029 [inline] file_tty_write.constprop.0+0x529/0x910 drivers/tty/tty_io.c:1119 call_write_iter include/linux/fs.h:2004 [inline] new_sync_write+0x42c/0x660 fs/read_write.c:518 vfs_write+0x7c0/0xb10 fs/read_write.c:605 ksys_write+0x12d/0x260 fs/read_write.c:658 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f2d2eb64b19 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:00007f2d2c0da188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f2d2ec77f60 RCX: 00007f2d2eb64b19 RDX: 000000000000042a RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00007f2d2ebbef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf999fe5f R14: 00007f2d2c0da300 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: 38 00 cmp %al,(%rax) 2: 0f 1f 00 nopl (%rax) 5: 55 push %rbp 6: 48 89 fd mov %rdi,%rbp 9: 48 83 c7 18 add $0x18,%rdi d: 53 push %rbx e: 48 89 f3 mov %rsi,%rbx 11: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 16: e8 7a 66 3f fd callq 0xfd3f6695 1b: 48 89 ef mov %rbp,%rdi 1e: e8 d2 20 40 fd callq 0xfd4020f5 23: f6 c7 02 test $0x2,%bh 26: 75 10 jne 0x38 28: 53 push %rbx 29: 9d popfq * 2a: 65 ff 0d e4 89 1a 7c decl %gs:0x7c1a89e4(%rip) # 0x7c1a8a15 <-- trapping instruction 31: 5b pop %rbx 32: 5d pop %rbp 33: e9 5d 5a 38 00 jmpq 0x385a95 38: e8 88 46 5f fd callq 0xfd5f46c5 3d: eb e9 jmp 0x28 3f: 66 data16