REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.2/22480 is trying to acquire lock: REISERFS (device loop5): checking transaction log (loop5) 00000000d2f1004c (sb_internal#2){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline] 00000000d2f1004c (sb_internal#2){.+.+}, at: start_transaction+0xa37/0xf90 fs/btrfs/transaction.c:528 but task is already holding lock: 0000000094abf9c9 (&fs_info->qgroup_ioctl_lock){+.+.}, at: btrfs_quota_enable+0xbf/0x10b0 fs/btrfs/qgroup.c:893 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&fs_info->qgroup_ioctl_lock){+.+.}: btrfs_remove_qgroup+0xae/0x770 fs/btrfs/qgroup.c:1415 btrfs_ioctl_qgroup_create fs/btrfs/ioctl.c:5337 [inline] btrfs_ioctl+0x661c/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 -> #0 (sb_internal#2){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x6e/0x2a0 fs/super.c:1366 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 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&fs_info->qgroup_ioctl_lock); lock(sb_internal#2); lock(&fs_info->qgroup_ioctl_lock); lock(sb_internal#2); *** DEADLOCK *** 3 locks held by syz-executor.2/22480: #0: 000000009e497058 (sb_writers#27){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000009e497058 (sb_writers#27){.+.+}, at: mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 #1: 00000000fabeb61d (&fs_info->subvol_sem){+.+.}, at: btrfs_ioctl_quota_ctl fs/btrfs/ioctl.c:5229 [inline] #1: 00000000fabeb61d (&fs_info->subvol_sem){+.+.}, at: btrfs_ioctl+0x3d12/0x76d0 fs/btrfs/ioctl.c:6021 #2: 0000000094abf9c9 (&fs_info->qgroup_ioctl_lock){+.+.}, at: btrfs_quota_enable+0xbf/0x10b0 fs/btrfs/qgroup.c:893 tls_set_device_offload_rx: netdev lo with no TLS offload stack backtrace: CPU: 1 PID: 22480 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 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 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x6e/0x2a0 fs/super.c:1366 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 RIP: 0033:0x7f4bf360c0f9 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:00007f4bf1b7e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4bf372bf80 RCX: 00007f4bf360c0f9 RDX: 00000000200000c0 RSI: 00000000c0109428 RDI: 0000000000000004 RBP: 00007f4bf3667ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd67e491ef R14: 00007f4bf1b7e300 R15: 0000000000022000 ieee80211 phy21: Selected rate control algorithm 'minstrel_ht' REISERFS (device loop5): Using r5 hash to sort names BTRFS error (device loop1): unsupported checksum algorithm 2 REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. BTRFS error (device loop1): superblock checksum mismatch gfs2: invalid mount option:  gfs2: can't parse mount arguments BTRFS error (device loop1): open_ctree failed BTRFS error (device loop2): fail to start transaction for status update: -28 tls_set_device_offload_rx: netdev sit0 with no TLS offload ieee80211 phy22: Selected rate control algorithm 'minstrel_ht' tls_set_device_offload_rx: netdev lo with no TLS offload BTRFS error (device loop1): unsupported checksum algorithm 2 BTRFS error (device loop1): superblock checksum mismatch BTRFS error (device loop1): open_ctree failed REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal ieee80211 phy23: Selected rate control algorithm 'minstrel_ht' REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 tls_set_device_offload_rx: netdev sit0 with no TLS offload gfs2: invalid mount option:  gfs2: can't parse mount arguments REISERFS (device loop5): checking transaction log (loop5) BTRFS info (device loop2): enabling inode map caching BTRFS warning (device loop2): excessive commit interval 620990646 BTRFS info (device loop2): force zlib compression, level 3 REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. BTRFS info (device loop2): using free space tree ieee80211 phy24: Selected rate control algorithm 'minstrel_ht' BTRFS info (device loop2): has skinny extents BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor.3 (22696) BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (22724) REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode gfs2: invalid mount option:  BTRFS error (device loop1): unsupported checksum algorithm 2 gfs2: can't parse mount arguments BTRFS error (device loop1): superblock checksum mismatch reiserfs: using flush barriers BTRFS error (device loop2): fail to start transaction for status update: -28 BTRFS error (device loop1): open_ctree failed REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. 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 gfs2: invalid mount option:  gfs2: can't parse mount arguments BTRFS error (device loop1): unsupported checksum algorithm 2 BTRFS error (device loop1): superblock checksum mismatch BTRFS error (device loop1): open_ctree failed BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor.2 (22758) BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (22772) BTRFS error (device loop3): fail to start transaction for status update: -28 BTRFS info (device loop5): enabling inode map caching BTRFS warning (device loop5): excessive commit interval 620990646 BTRFS info (device loop5): force zlib compression, level 3 BTRFS info (device loop5): using free space tree BTRFS info (device loop5): has skinny extents gfs2: invalid mount option:  gfs2: can't parse mount arguments BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor.2 (22811) BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (22856) BTRFS error (device loop5): fail to start transaction for status update: -28 BTRFS error (device loop1): unsupported checksum algorithm 2 BTRFS error (device loop1): superblock checksum mismatch BTRFS error (device loop1): open_ctree failed 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 gfs2: invalid mount option: gfs2: can't parse mount arguments BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor.2 (22870) tls_set_device_offload_rx: netdev sit0 with no TLS offload BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (22895) ieee80211 phy25: Selected rate control algorithm 'minstrel_ht' BTRFS error (device loop3): fail to start transaction for status update: -28 BTRFS info (device loop5): enabling inode map caching BTRFS warning (device loop5): excessive commit interval 620990646 BTRFS info (device loop5): force zlib compression, level 3 BTRFS info (device loop5): using free space tree BTRFS info (device loop5): has skinny extents tls_set_device_offload_rx: netdev sit0 with no TLS offload BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor.2 (22922) tls_set_device_offload_rx: netdev lo with no TLS offload gfs2: invalid mount option: gfs2: can't parse mount arguments BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (22965) ieee80211 phy26: Selected rate control algorithm 'minstrel_ht' BTRFS error (device loop5): fail to start transaction for status update: -28 ieee80211 phy27: Selected rate control algorithm 'minstrel_ht' tls_set_device_offload_rx: netdev sit0 with no TLS offload BTRFS info (device loop2): enabling inode map caching BTRFS warning (device loop2): excessive commit interval 620990646 BTRFS info (device loop2): force zlib compression, level 3 BTRFS info (device loop2): using free space tree BTRFS info (device loop2): has skinny extents gfs2: invalid mount option: # gfs2: can't parse mount arguments BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor.5 (23024) BTRFS error (device loop2): fail to start transaction for status update: -28 ieee80211 phy28: Selected rate control algorithm 'minstrel_ht' tls_set_device_offload_rx: netdev lo with no TLS offload tls_set_device_offload_rx: netdev lo with no TLS offload ieee80211 phy29: Selected rate control algorithm 'minstrel_ht' gfs2: invalid mount option: H gfs2: can't parse mount arguments ieee80211 phy30: Selected rate control algorithm 'minstrel_ht' tls_set_device_offload_rx: netdev lo with no TLS offload ieee80211 phy31: Selected rate control algorithm 'minstrel_ht' tls_set_device_offload_rx: netdev lo with no TLS offload gfs2: invalid mount option: L ieee80211 phy32: Selected rate control algorithm 'minstrel_ht' gfs2: can't parse mount arguments nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. FAT-fs (loop3): Directory bread(block 64) failed FAT-fs (loop3): Directory bread(block 65) failed FAT-fs (loop3): Directory bread(block 66) failed gfs2: invalid mount option: h gfs2: can't parse mount arguments tls_set_device_offload_rx: netdev lo with no TLS offload FAT-fs (loop3): Directory bread(block 67) failed FAT-fs (loop3): Directory bread(block 68) failed FAT-fs (loop3): Directory bread(block 69) failed FAT-fs (loop3): Directory bread(block 70) failed FAT-fs (loop3): Directory bread(block 71) failed FAT-fs (loop3): Directory bread(block 72) failed FAT-fs (loop3): Directory bread(block 73) failed ieee80211 phy33: Selected rate control algorithm 'minstrel_ht' BTRFS error (device loop1): unsupported checksum algorithm 2 BTRFS error (device loop1): superblock checksum mismatch BTRFS error (device loop1): open_ctree failed FAT-fs (loop3): Directory bread(block 64) failed FAT-fs (loop3): Directory bread(block 65) failed FAT-fs (loop3): Directory bread(block 66) failed FAT-fs (loop3): Directory bread(block 67) failed FAT-fs (loop5): Directory bread(block 64) failed FAT-fs (loop5): Directory bread(block 65) failed FAT-fs (loop3): Directory bread(block 68) failed FAT-fs (loop5): Directory bread(block 66) failed gfs2: invalid mount option: l FAT-fs (loop3): Directory bread(block 69) failed gfs2: can't parse mount arguments FAT-fs (loop5): Directory bread(block 67) failed FAT-fs (loop3): Directory bread(block 70) failed FAT-fs (loop5): Directory bread(block 68) failed FAT-fs (loop3): Directory bread(block 71) failed FAT-fs (loop3): Directory bread(block 72) failed FAT-fs (loop5): Directory bread(block 69) failed FAT-fs (loop3): Directory bread(block 73) failed FAT-fs (loop5): Directory bread(block 70) failed FAT-fs (loop5): Directory bread(block 71) failed FAT-fs (loop5): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 64) failed FAT-fs (loop5): Directory bread(block 73) failed FAT-fs (loop2): Directory bread(block 65) failed FAT-fs (loop2): Directory bread(block 66) failed FAT-fs (loop2): Directory bread(block 67) failed FAT-fs (loop2): Directory bread(block 68) failed FAT-fs (loop2): Directory bread(block 69) failed FAT-fs (loop2): Directory bread(block 70) failed FAT-fs (loop2): Directory bread(block 71) failed FAT-fs (loop2): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 73) failed gfs2: invalid mount option: t gfs2: can't parse mount arguments FAT-fs (loop5): Directory bread(block 64) failed FAT-fs (loop3): Directory bread(block 64) failed FAT-fs (loop5): Directory bread(block 65) failed FAT-fs (loop3): Directory bread(block 65) failed FAT-fs (loop2): Directory bread(block 64) failed FAT-fs (loop5): Directory bread(block 66) failed FAT-fs (loop3): Directory bread(block 66) failed FAT-fs (loop3): Directory bread(block 67) failed FAT-fs (loop5): Directory bread(block 67) failed FAT-fs (loop3): Directory bread(block 68) failed FAT-fs (loop2): Directory bread(block 65) failed FAT-fs (loop5): Directory bread(block 68) failed FAT-fs (loop3): Directory bread(block 69) failed FAT-fs (loop2): Directory bread(block 66) failed FAT-fs (loop5): Directory bread(block 69) failed FAT-fs (loop3): Directory bread(block 70) failed FAT-fs (loop2): Directory bread(block 67) failed FAT-fs (loop5): Directory bread(block 70) failed FAT-fs (loop3): Directory bread(block 71) failed FAT-fs (loop5): Directory bread(block 71) failed FAT-fs (loop3): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 68) failed FAT-fs (loop3): Directory bread(block 73) failed FAT-fs (loop5): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 69) failed FAT-fs (loop5): Directory bread(block 73) failed FAT-fs (loop2): Directory bread(block 70) failed FAT-fs (loop2): Directory bread(block 71) failed FAT-fs (loop2): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 73) failed FAT-fs (loop3): Directory bread(block 64) failed FAT-fs (loop3): Directory bread(block 65) failed FAT-fs (loop3): Directory bread(block 66) failed FAT-fs (loop3): Directory bread(block 67) failed FAT-fs (loop3): Directory bread(block 68) failed gfs2: invalid mount option: z FAT-fs (loop3): Directory bread(block 69) failed FAT-fs (loop5): Directory bread(block 64) failed gfs2: can't parse mount arguments FAT-fs (loop3): Directory bread(block 70) failed FAT-fs (loop5): Directory bread(block 65) failed FAT-fs (loop3): Directory bread(block 71) failed FAT-fs (loop5): Directory bread(block 66) failed FAT-fs (loop3): Directory bread(block 72) failed FAT-fs (loop2): Directory bread(block 64) failed FAT-fs (loop5): Directory bread(block 67) failed