kmemleak: 17 new suspected memory leaks (see /sys/kernel/debug/kmemleak) watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor:5694] Modules linked in: irq event stamp: 7881048 hardirqs last enabled at (7881047): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (7881047): [] _raw_spin_unlock_irqrestore+0x34/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (7881048): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (7289520): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (7289119): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5694 Comm: syz-executor Not tainted 5.10.90 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 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: 80 00 00 00 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 7a 40 48 fd 48 89 ef e8 62 f7 48 fd f6 c7 02 75 0c 53 9d <65> ff 0d 84 0a 24 7c 5b 5d c3 e8 bc 75 67 fd eb ed 66 2e 0f 1f 84 RSP: 0018:ffff888045b87b68 EFLAGS: 00000246 RAX: 0000000000784157 RBX: 0000000000000246 RCX: 1ffffffff0cae5da RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83de64c4 RBP: ffff888016f73950 R08: 0000000000000001 R09: ffffffff86553677 R10: fffffbfff0caa6ce R11: 0000000000000001 R12: 0000000000000246 R13: ffff88800ef19378 R14: 0000000000000000 R15: ffffffff842e19e0 FS: 0000555556cdb400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000005 CR3: 0000000042b44000 CR4: 0000000000350ef0 Call Trace: kmemleak_seq_show+0x105/0x140 mm/kmemleak.c:1689 traverse.part.0+0xd7/0x610 fs/seq_file.c:111 traverse fs/seq_file.c:101 [inline] seq_read_iter+0x930/0x12b0 fs/seq_file.c:195 seq_read+0x3dd/0x5b0 fs/seq_file.c:162 full_proxy_read+0x11d/0x190 fs/debugfs/file.c:231 vfs_read+0x228/0x580 fs/read_write.c:494 ksys_read+0x12d/0x250 fs/read_write.c:634 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f362c3c565e Code: 0f 1f 40 00 48 c7 c2 bc ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb ba 0f 1f 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28 RSP: 002b:00007ffc587c17a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007ffc587c1de8 RCX: 00007f362c3c565e RDX: 000000000001ffff RSI: 00007f362c92a020 RDI: 0000000000000003 RBP: 0000000000000005 R08: 0000000000000000 R09: 00007ffc587c8090 R10: 000000000012124e R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc587c1880 R14: 0000000000000000 R15: 0000000000000003 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/0x10 arch/x86/kernel/process.c:689 ---------------- Code disassembly (best guess): 0: 80 00 00 addb $0x0,(%rax) 3: 00 00 add %al,(%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 40 48 fd callq 0xfd484095 1b: 48 89 ef mov %rbp,%rdi 1e: e8 62 f7 48 fd callq 0xfd48f785 23: f6 c7 02 test $0x2,%bh 26: 75 0c jne 0x34 28: 53 push %rbx 29: 9d popfq * 2a: 65 ff 0d 84 0a 24 7c decl %gs:0x7c240a84(%rip) # 0x7c240ab5 <-- trapping instruction 31: 5b pop %rbx 32: 5d pop %rbp 33: c3 retq 34: e8 bc 75 67 fd callq 0xfd6775f5 39: eb ed jmp 0x28 3b: 66 data16 3c: 2e cs 3d: 0f .byte 0xf 3e: 1f (bad) 3f: 84 .byte 0x84