Hello, syzbot found the following issue on: HEAD commit: 38d2b86a665b Add linux-next specific files for 20230208 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=11f5e56b480000 kernel config: https://syzkaller.appspot.com/x/.config?x=3691b32dd4410e01 dashboard link: https://syzkaller.appspot.com/bug?extid=5a195884ee3ad761db4e compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0a9d60e90514/disk-38d2b86a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/71311be5f1a1/vmlinux-38d2b86a.xz kernel image: https://storage.googleapis.com/syzbot-assets/a242870cc8eb/bzImage-38d2b86a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5a195884ee3ad761db4e@xxxxxxxxxxxxxxxxxxxxxxxxx reiserfs: enabling write barrier flush mode REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support tmpfile. ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 5500 at kernel/locking/lockdep.c:232 hlock_class kernel/locking/lockdep.c:232 [inline] WARNING: CPU: 1 PID: 5500 at kernel/locking/lockdep.c:232 hlock_class kernel/locking/lockdep.c:221 [inline] WARNING: CPU: 1 PID: 5500 at kernel/locking/lockdep.c:232 check_wait_context kernel/locking/lockdep.c:4746 [inline] WARNING: CPU: 1 PID: 5500 at kernel/locking/lockdep.c:232 __lock_acquire+0x1664/0x5df0 kernel/locking/lockdep.c:5024 Modules linked in: CPU: 1 PID: 5500 Comm: syz-executor.2 Not tainted 6.2.0-rc7-next-20230208-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:hlock_class kernel/locking/lockdep.c:232 [inline] RIP: 0010:hlock_class kernel/locking/lockdep.c:221 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4746 [inline] RIP: 0010:__lock_acquire+0x1664/0x5df0 kernel/locking/lockdep.c:5024 Code: 08 84 d2 0f 85 8c 3a 00 00 8b 0d 93 4e 10 0d 85 c9 0f 85 33 fb ff ff 48 c7 c6 80 6f 4c 8a 48 c7 c7 c0 63 4c 8a e8 9c 58 e6 ff <0f> 0b 31 ed e9 b3 ed ff ff e8 1e d6 b0 02 85 c0 0f 84 c3 fa ff ff RSP: 0000:ffffc900059cf7f0 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffffffff92000c7f RCX: ffffc90005f61000 RDX: 0000000000040000 RSI: ffffffff814bfdd7 RDI: 0000000000000001 RBP: 0000000000001100 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 000000002d2d2d2d R12: ffff888028100ab0 R13: ffff888028100000 R14: 0000000000040000 R15: 0000000000041100 FS: 00007f8fab92e700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200de030 CR3: 00000000717c5000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> lock_acquire.part.0+0x11c/0x370 kernel/locking/lockdep.c:5691 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] take_dentry_name_snapshot+0x2b/0x170 fs/dcache.c:315 ovl_check_rename_whiteout fs/overlayfs/super.c:1207 [inline] ovl_make_workdir fs/overlayfs/super.c:1329 [inline] ovl_get_workdir fs/overlayfs/super.c:1444 [inline] ovl_fill_super+0x2090/0x7270 fs/overlayfs/super.c:2000 mount_nodev+0x64/0x120 fs/super.c:1418 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x350 fs/super.c:1502 do_new_mount fs/namespace.c:3042 [inline] path_mount+0x1342/0x1e40 fs/namespace.c:3372 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount fs/namespace.c:3571 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8faac8c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8fab92e168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f8faadabf80 RCX: 00007f8faac8c0f9 RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007f8faace7ae9 R08: 0000000020000480 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1f6e324f R14: 00007f8fab92e300 R15: 0000000000022000 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
