BTRFS warning (device loop3): excessive commit interval 620990646 BTRFS info (device loop3): force zlib compression, level 3 BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents ====================================================== WARNING: possible circular locking dependency detected BTRFS error (device loop3): fail to start transaction for status update: -28 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/957 is trying to acquire lock: 000000006c5b7c03 (&fs_info->qgroup_ioctl_lock){+.+.}, at: btrfs_create_qgroup+0x5a/0x270 fs/btrfs/qgroup.c:1380 but task is already holding lock: 000000000fda76af (sb_internal#5){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] 000000000fda76af (sb_internal#5){.+.+}, 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#5){.+.+}: 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#5); lock(&fs_info->qgroup_ioctl_lock); lock(sb_internal#5); lock(&fs_info->qgroup_ioctl_lock); *** DEADLOCK *** 2 locks held by syz-executor.3/957: #0: 000000006d07c562 (sb_writers#25){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000006d07c562 (sb_writers#25){.+.+}, at: mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 #1: 000000000fda76af (sb_internal#5){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] #1: 000000000fda76af (sb_internal#5){.+.+}, at: start_transaction+0xa37/0xf90 fs/btrfs/transaction.c:528 stack backtrace: CPU: 0 PID: 957 Comm: syz-executor.3 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: 0033:0x7f689fba40c9 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:00007f689e116168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f689fcc3f80 RCX: 00007f689fba40c9 RDX: 0000000020000200 RSI: 000000004010942a RDI: 0000000000000004 RBP: 00007f689fbffae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd82827e9f R14: 00007f689e116300 R15: 0000000000022000 ip6tnl0: mtu less than device minimum BTRFS info (device loop3): enabling inode map caching BTRFS warning (device loop3): excessive commit interval 620990646 BTRFS info (device loop3): force zlib compression, level 3 BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents BTRFS error (device loop3): fail to start transaction for status update: -28 BTRFS info (device loop3): enabling inode map caching BTRFS warning (device loop3): excessive commit interval 620990646 BTRFS info (device loop3): force zlib compression, level 3 BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents BTRFS error (device loop3): fail to start transaction for status update: -28 netlink: 'syz-executor.4': attribute type 16 has an invalid length. BTRFS info (device loop3): enabling inode map caching BTRFS warning (device loop3): excessive commit interval 620990646 BTRFS info (device loop3): force zlib compression, level 3 BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents BTRFS error (device loop3): fail to start transaction for status update: -28 EXT4-fs (loop3): orphan cleanup on readonly fs EXT4-fs error (device loop3): ext4_ext_check_inode:498: inode #3: comm syz-executor.3: pblk 0 bad header/extent: invalid extent entries - magic f30a, entries 1, max 4(4), depth 0(0) EXT4-fs error (device loop3): ext4_quota_enable:5846: comm syz-executor.3: Bad quota inode # 3 EXT4-fs warning (device loop3): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. EXT4-fs (loop3): Cannot turn on quotas: error -117 EXT4-fs (loop3): mounted filesystem without journal. Opts: nobarrier,noblock_validity,nolazytime,barrier=0x000000007fff0038,data_err=abort,resgid=0x0000000000000000,resuid=0x000000000000ee00,resgid=0x000000000000ee01,resgid=0x000000000000ee002,errors=continue EXT4-fs (loop3): orphan cleanup on readonly fs EXT4-fs error (device loop3): ext4_ext_check_inode:498: inode #3: comm syz-executor.3: pblk 0 bad header/extent: invalid extent entries - magic f30a, entries 1, max 4(4), depth 0(0) EXT4-fs error (device loop3): ext4_quota_enable:5846: comm syz-executor.3: Bad quota inode # 3 EXT4-fs warning (device loop3): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. EXT4-fs (loop3): Cannot turn on quotas: error -117 EXT4-fs (loop3): mounted filesystem without journal. Opts: nobarrier,noblock_validity,nolazytime,barrier=0x000000007fff0038,data_err=abort,resgid=0x0000000000000000,resuid=0x000000000000ee00,resgid=0x000000000000ee01,resgid=0x000000000000ee002,errors=continue EXT4-fs (loop3): orphan cleanup on readonly fs EXT4-fs error (device loop3): ext4_ext_check_inode:498: inode #3: comm syz-executor.3: pblk 0 bad header/extent: invalid extent entries - magic f30a, entries 1, max 4(4), depth 0(0) EXT4-fs error (device loop3): ext4_quota_enable:5846: comm syz-executor.3: Bad quota inode # 3 EXT4-fs warning (device loop3): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. EXT4-fs (loop3): Cannot turn on quotas: error -117 EXT4-fs (loop3): mounted filesystem without journal. Opts: nobarrier,noblock_validity,nolazytime,barrier=0x000000007fff0038,data_err=abort,resgid=0x0000000000000000,resuid=0x000000000000ee00,resgid=0x000000000000ee01,resgid=0x000000000000ee002,errors=continue EXT4-fs (loop3): orphan cleanup on readonly fs EXT4-fs error (device loop3): ext4_ext_check_inode:498: inode #3: comm syz-executor.3: pblk 0 bad header/extent: invalid extent entries - magic f30a, entries 1, max 4(4), depth 0(0) EXT4-fs error (device loop3): ext4_quota_enable:5846: comm syz-executor.3: Bad quota inode # 3 EXT4-fs warning (device loop3): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. EXT4-fs (loop3): Cannot turn on quotas: error -117 EXT4-fs (loop3): mounted filesystem without journal. Opts: nobarrier,noblock_validity,nolazytime,barrier=0x000000007fff0038,data_err=abort,resgid=0x0000000000000000,resuid=0x000000000000ee00,resgid=0x000000000000ee01,resgid=0x000000000000ee002,errors=continue NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) overlayfs: unrecognized mount option "default_pe2missions" or missing value NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024)