===================================== WARNING: bad unlock balance detected! 5.2.0-rc5 #1 Not tainted ------------------------------------- syz-executor.4/6537 is trying to release lock (rcu_callback) at: [] __write_once_size include/linux/compiler.h:221 [inline] [] __rcu_reclaim kernel/rcu/rcu.h:221 [inline] [] rcu_do_batch kernel/rcu/tree.c:2092 [inline] [] invoke_rcu_callbacks kernel/rcu/tree.c:2310 [inline] [] rcu_core+0xb97/0x1500 kernel/rcu/tree.c:2291 but there are no more locks to release! other info that might help us debug this: 1 lock held by syz-executor.4/6537: #0: 00000000d0cf27f3 (&type->s_umount_key#57/1){+.+.}, at: alloc_super+0x158/0x890 fs/super.c:228 stack backtrace: CPU: 1 PID: 6537 Comm: syz-executor.4 Not tainted 5.2.0-rc5 #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_unlock_imbalance_bug kernel/locking/lockdep.c:3846 [inline] print_unlock_imbalance_bug.cold+0x114/0x123 kernel/locking/lockdep.c:3823 __lock_release kernel/locking/lockdep.c:4062 [inline] lock_release+0x67b/0xa00 kernel/locking/lockdep.c:4322 rcu_lock_release include/linux/rcupdate.h:213 [inline] __rcu_reclaim kernel/rcu/rcu.h:223 [inline] rcu_do_batch kernel/rcu/tree.c:2092 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2310 [inline] rcu_core+0xbbd/0x1500 kernel/rcu/tree.c:2291 __do_softirq+0x25c/0x94c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1068 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:767 [inline] RIP: 0010:console_unlock+0xd60/0xec0 kernel/printk/printk.c:2467 Code: 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 30 48 83 3d ed fa 57 07 00 74 1f e8 56 48 16 00 48 8b 7d 98 57 9d <0f> 1f 44 00 00 e9 7d fa ff ff e8 61 ec 4e 00 e9 40 f5 ff ff e8 37 RSP: 0018:ffff88805f8777a8 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 0000000000000200 RCX: ffffc9000e64d000 RDX: 000000000001ba68 RSI: ffffffff815a790a RDI: 0000000000000216 RBP: ffff88805f877830 R08: ffff888092580180 R09: fffffbfff117312d R10: fffffbfff117312c R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff84260b00 R14: dffffc0000000000 R15: ffffffff891a0d70 vprintk_emit+0x2a0/0x700 kernel/printk/printk.c:1986 vprintk_default+0x28/0x30 kernel/printk/printk.c:2013 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:386 printk+0xba/0xed kernel/printk/printk.c:2046 __ntfs_error.cold+0x91/0xc7 fs/ntfs/debug.c:89 parse_options+0x19ff/0x1d30 fs/ntfs/super.c:234 ntfs_fill_super+0x1c7/0x3150 fs/ntfs/super.c:2748 mount_bdev+0x304/0x3c0 fs/super.c:1346 ntfs_mount+0x35/0x40 fs/ntfs/super.c:3051 legacy_get_tree+0x108/0x220 fs/fs_context.c:661 vfs_get_tree+0x8e/0x390 fs/super.c:1476 do_new_mount fs/namespace.c:2790 [inline] do_mount+0x138c/0x1c00 fs/namespace.c:3110 ksys_mount+0xdb/0x150 fs/namespace.c:3319 __do_sys_mount fs/namespace.c:3333 [inline] __se_sys_mount fs/namespace.c:3330 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3330 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45bd1a Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9d 8d fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 7a 8d fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007ff62cda0a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff62cda0b40 RCX: 000000000045bd1a RDX: 00007ff62cda0ae0 RSI: 0000000020000400 RDI: 00007ff62cda0b00 RBP: 0000000000000001 R08: 00007ff62cda0b40 R09: 00007ff62cda0ae0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 00000000004c82e2 R14: 00000000004deb40 R15: 00000000ffffffff print_req_error: 383 callbacks suppressed print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 buffer_io_error: 422 callbacks suppressed Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: 549 callbacks suppressed print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0 print_req_error: I/O error, dev loop0, sector 0 flags 0