EXT4-fs (loop2): Mount option "noacl" will be removed by 3.5 Contact linux-ext4@vger.kernel.org if you think we should keep it. EXT4-fs (loop2): mounted filesystem without journal. Opts: noacl,,errors=continue watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor:4110] Modules linked in: irq event stamp: 5202478 hardirqs last enabled at (5202477): [<ffffffff84000d02>] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5202478): [<ffffffff83e5c29b>] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (113252): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (113217): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4110 Comm: syz-executor Not tainted 5.10.223 #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 2a c2 3f fd 48 89 ef e8 f2 7b 40 fd f6 c7 02 75 10 53 9d <65> ff 0d b4 00 1b 7c 5b 5d e9 2d d1 38 00 e8 68 a1 5f fd eb e9 66 RSP: 0018:ffff888049cefc40 EFLAGS: 00000287 RAX: 00000000004f61fd RBX: 0000000000000287 RCX: 1ffffffff0d1100a RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e76e98 RBP: ffff88801309a870 R08: 0000000000000001 R09: ffffffff86868737 R10: fffffbfff0d0d0e6 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88800eb10a78 R14: ffff88800eb108c8 R15: ffffffff844e52e0 FS: 0000555556a95400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc75f8c080 CR3: 000000000d9be000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000dd060a Call Trace: <IRQ> </IRQ> kmemleak_scan+0x1bd/0x13f0 mm/kmemleak.c:1435 kmemleak_write+0x576/0x680 mm/kmemleak.c:1826 full_proxy_write+0x11d/0x190 fs/debugfs/file.c:244 vfs_write+0x29a/0xb10 fs/read_write.c:603 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: 0033:0x7fceb5fac5c3 Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007ffc75ec8ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffc75ec9528 RCX: 00007fceb5fac5c3 RDX: 0000000000000004 RSI: 00007fceb6062ed9 RDI: 0000000000000003 RBP: 0000000000000002 R08: 00000000000000b7 R09: 00007ffc75f8c080 R10: 00007ffc75f8c090 R11: 0000000000000246 R12: 00000000fffffff6 R13: 00007ffc75ecaef1 R14: 0000000000000000 R15: 000000000002cc04 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 2a c2 3f fd callq 0xfd3fc245 1b: 48 89 ef mov %rbp,%rdi 1e: e8 f2 7b 40 fd callq 0xfd407c15 23: f6 c7 02 test $0x2,%bh 26: 75 10 jne 0x38 28: 53 push %rbx 29: 9d popfq * 2a: 65 ff 0d b4 00 1b 7c decl %gs:0x7c1b00b4(%rip) # 0x7c1b00e5 <-- trapping instruction 31: 5b pop %rbx 32: 5d pop %rbp 33: e9 2d d1 38 00 jmpq 0x38d165 38: e8 68 a1 5f fd callq 0xfd5fa1a5 3d: eb e9 jmp 0x28 3f: 66 data16