kmemleak: 2866 new suspected memory leaks (see /sys/kernel/debug/kmemleak) watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/0:2:70] Modules linked in: irq event stamp: 59505174 hardirqs last enabled at (59505173): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (59505173): [] _raw_spin_unlock_irqrestore+0x38/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (59505174): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (235954): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (235767): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 70 Comm: kworker/0:2 Not tainted 5.10.228 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: events rtc_timer_do_work 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 6a 76 3f fd 48 89 ef e8 c2 30 40 fd f6 c7 02 75 10 53 9d <65> ff 0d d4 99 1a 7c 5b 5d e9 4d 6a 38 00 e8 78 56 5f fd eb e9 66 RSP: 0018:ffff88800ee0fa78 EFLAGS: 00000246 RAX: 00000000038bfa15 RBX: 0000000000000246 RCX: 1ffffffff0d10f72 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83e7d578 RBP: ffff88800f878690 R08: 0000000000000001 R09: ffffffff8686a72f R10: fffffbfff0d0d4e5 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000246 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556a694c58 CR3: 0000000004e26000 CR4: 0000000000350ef0 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] __wake_up_common_lock+0xde/0x140 kernel/sched/wait.c:125 rtc_handle_legacy_irq drivers/rtc/interface.c:630 [inline] rtc_uie_update_irq+0x74/0xa0 drivers/rtc/interface.c:653 rtc_timer_do_work+0x282/0xbd0 drivers/rtc/interface.c:928 process_one_work+0x9a9/0x14b0 kernel/workqueue.c:2282 worker_thread+0x61d/0x1310 kernel/workqueue.c:2428 kthread+0x38f/0x470 kernel/kthread.c:328 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:298 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5770 Comm: syz-executor Not tainted 5.10.228 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__lock_acquire+0xd7e/0x5b00 kernel/locking/lockdep.c:4825 Code: f2 18 05 e9 b5 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 80 3c 02 00 0f 85 75 2f 00 00 49 81 3e 00 42 15 86 <0f> 84 5f f3 ff ff 83 fe 01 0f 87 67 f3 ff ff 48 b8 00 00 00 00 00 RSP: 0018:ffff88804ad379f0 EFLAGS: 00000002 RAX: dffffc0000000000 RBX: 1ffff110095a6f6c RCX: 0000000000000000 RDX: 1ffff11001d5a6f7 RSI: 0000000000000000 RDI: ffff88800ead37b8 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000046 R11: 0000000000000001 R12: ffff888046053480 R13: 0000000000000001 R14: ffff88800ead37b8 R15: 0000000000000000 FS: 000055556cfc1400(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f34372dc000 CR3: 0000000047f7a000 CR4: 0000000000350ee0 Call Trace: lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x36/0x60 kernel/locking/spinlock.c:159 kmemleak_scan+0x62c/0x13f0 mm/kmemleak.c:1503 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: 0033:0x7f3436d765c3 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:00007ffc42bfa9b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffc42bfaff8 RCX: 00007f3436d765c3 RDX: 0000000000000004 RSI: 00007f3436e2ced9 RDI: 0000000000000003 RBP: 0000000000000002 R08: 000000000000020a R09: 00007ffc42de1080 R10: 00007ffc42bfa980 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc42bfaa90 R14: 0000000000000000 R15: 0000000000000003 hpet: Lost 5 RTC interrupts hpet: Lost 5 RTC interrupts kmemleak: 79 new suspected memory leaks (see /sys/kernel/debug/kmemleak) ---------------- 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 6a 76 3f fd callq 0xfd3f7685 1b: 48 89 ef mov %rbp,%rdi 1e: e8 c2 30 40 fd callq 0xfd4030e5 23: f6 c7 02 test $0x2,%bh 26: 75 10 jne 0x38 28: 53 push %rbx 29: 9d popfq * 2a: 65 ff 0d d4 99 1a 7c decl %gs:0x7c1a99d4(%rip) # 0x7c1a9a05 <-- trapping instruction 31: 5b pop %rbx 32: 5d pop %rbp 33: e9 4d 6a 38 00 jmpq 0x386a85 38: e8 78 56 5f fd callq 0xfd5f56b5 3d: eb e9 jmp 0x28 3f: 66 data16