BTRFS warning (device loop4): excessive commit interval 620990646 BTRFS info (device loop4): force zlib compression, level 3 BTRFS info (device loop4): using free space tree BTRFS info (device loop4): has skinny extents ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ BTRFS error (device loop4): fail to start transaction for status update: -28 syz-executor.4/31471 is trying to acquire lock: 00000000a244f556 (&fs_info->qgroup_ioctl_lock){+.+.}, at: btrfs_create_qgroup+0x5a/0x270 fs/btrfs/qgroup.c:1380 but task is already holding lock: 0000000030d19ed6 (sb_internal#3){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] 0000000030d19ed6 (sb_internal#3){.+.+}, at: start_transaction+0xa37/0xf90 fs/btrfs/transaction.c:528 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (sb_internal#3){.+.+}: sb_start_intwrite include/linux/fs.h:1626 [inline] start_transaction+0xa37/0xf90 fs/btrfs/transaction.c:528 btrfs_quota_enable+0x169/0x10b0 fs/btrfs/qgroup.c:905 btrfs_ioctl_quota_ctl fs/btrfs/ioctl.c:5233 [inline] btrfs_ioctl+0x622c/0x76d0 fs/btrfs/ioctl.c:6021 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&fs_info->qgroup_ioctl_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 btrfs_create_qgroup+0x5a/0x270 fs/btrfs/qgroup.c:1380 btrfs_ioctl_qgroup_create fs/btrfs/ioctl.c:5335 [inline] btrfs_ioctl+0xcce/0x76d0 fs/btrfs/ioctl.c:6025 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_internal#3); lock(&fs_info->qgroup_ioctl_lock); lock(sb_internal#3); lock(&fs_info->qgroup_ioctl_lock); *** DEADLOCK *** 2 locks held by syz-executor.4/31471: #0: 00000000f445d995 (sb_writers#17){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000f445d995 (sb_writers#17){.+.+}, at: mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 #1: 0000000030d19ed6 (sb_internal#3){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] #1: 0000000030d19ed6 (sb_internal#3){.+.+}, at: start_transaction+0xa37/0xf90 fs/btrfs/transaction.c:528 stack backtrace: CPU: 1 PID: 31471 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 btrfs_create_qgroup+0x5a/0x270 fs/btrfs/qgroup.c:1380 btrfs_ioctl_qgroup_create fs/btrfs/ioctl.c:5335 [inline] btrfs_ioctl+0xcce/0x76d0 fs/btrfs/ioctl.c:6025 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f5ad1d720c9 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:00007f5ad02e4168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f5ad1e91f80 RCX: 00007f5ad1d720c9 RDX: 0000000020000200 RSI: 000000004010942a RDI: 0000000000000004 RBP: 00007f5ad1dcdae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe6f97dacf R14: 00007f5ad02e4300 R15: 0000000000022000 UDF-fs: bad mount option "#+xbb ]0m| 4  J$⌞7\('R@1Vd6c#j7 1(lrݼ)PMˇs3~0u&uXUum瀎O Csvq d$۱SN=/Yh`ycG1g2 H" or missing value BTRFS info (device loop4): enabling inode map caching BTRFS warning (device loop4): excessive commit interval 620990646 BTRFS info (device loop4): force zlib compression, level 3 BTRFS info (device loop4): using free space tree BTRFS info (device loop4): has skinny extents BTRFS error (device loop4): fail to start transaction for status update: -28 UDF-fs: bad mount option "H+xbb ]0m| 4  J$⌞7\('R@1Vd6c#j7 1(lrݼ)PMˇs3~0u&uXUum瀎O Csvq d$۱SN=/Yh`ycG1g2 H" or missing value BTRFS info (device loop4): enabling inode map caching BTRFS warning (device loop4): excessive commit interval 620990646 BTRFS info (device loop4): force zlib compression, level 3 BTRFS info (device loop4): using free space tree BTRFS info (device loop4): has skinny extents BTRFS error (device loop4): fail to start transaction for status update: -28 UDF-fs: bad mount option "L+xbb ]0m| 4  J$⌞7\('R@1Vd6c#j7 1(lrݼ)PMˇs3~0u&uXUum瀎O Csvq d$۱SN=/Yh`ycG1g2 H" or missing value BTRFS info (device loop4): enabling inode map caching BTRFS warning (device loop4): excessive commit interval 620990646 BTRFS info (device loop4): force zlib compression, level 3 BTRFS info (device loop4): using free space tree BTRFS info (device loop4): has skinny extents BTRFS error (device loop4): fail to start transaction for status update: -28 UDF-fs: bad mount option "`+xbb ]0m| 4  J$⌞7\('R@1Vd6c#j7 1(lrݼ)PMˇs3~0u&uXUum瀎O Csvq d$۱SN=/Yh`ycG1g2 H" or missing value UDF-fs: bad mount option "h+xbb ]0m| 4  J$⌞7\('R@1Vd6c#j7 1(lrݼ)PMˇs3~0u&uXUum瀎O Csvq d$۱SN=/Yh`ycG1g2 H" or missing value UDF-fs: bad mount option "l+xbb ]0m| 4  J$⌞7\('R@1Vd6c#j7 1(lrݼ)PMˇs3~0u&uXUum瀎O Csvq d$۱SN=/Yh`ycG1g2 H" or missing value UDF-fs: bad mount option "t+xbb ]0m| 4  J$⌞7\('R@1Vd6c#j7 1(lrݼ)PMˇs3~0u&uXUum瀎O Csvq d$۱SN=/Yh`ycG1g2 H" or missing value UDF-fs: bad mount option "z+xbb ]0m| 4  J$⌞7\('R@1Vd6c#j7 1(lrݼ)PMˇs3~0u&uXUum瀎O Csvq d$۱SN=/Yh`ycG1g2 H" or missing value UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) EXT4-fs warning (device sda1): ext4_ioctl:814: Setting inode version is not supported with metadata_csum enabled. UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ALSA: mixer_oss: invalid OSS volume '' UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '' UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'.