REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 4.14.302-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/9788 is trying to acquire lock: (sb_writers#14){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] (sb_writers#14){.+.+}, at: [] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497 but task is already holding lock: (&sbi->lock){+.+.}, at: [] reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&sbi->lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 reiserfs_lookup+0x130/0x400 fs/reiserfs/namei.c:363 lookup_real fs/namei.c:1555 [inline] __lookup_hash fs/namei.c:1575 [inline] __lookup_hash+0x1bb/0x270 fs/namei.c:1563 lookup_one_len+0x279/0x3a0 fs/namei.c:2539 reiserfs_lookup_privroot+0x92/0x270 fs/reiserfs/xattr.c:970 reiserfs_fill_super+0x1772/0x2990 fs/reiserfs/super.c:2205 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 -> #1 (&type->i_mutex_dir_key#8){++++}: down_write+0x34/0x90 kernel/locking/rwsem.c:54 inode_lock include/linux/fs.h:719 [inline] do_last fs/namei.c:3331 [inline] path_openat+0xde2/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 -> #0 (sb_writers#14){.+.+}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 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+0x64/0x260 fs/super.c:1342 sb_start_write include/linux/fs.h:1551 [inline] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497 reiserfs_ioctl+0x18e/0x8b0 fs/reiserfs/ioctl.c:110 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 other info that might help us debug this: Chain exists of: sb_writers#14 --> &type->i_mutex_dir_key#8 --> &sbi->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->lock); lock(&type->i_mutex_dir_key#8); lock(&sbi->lock); lock(sb_writers#14); *** DEADLOCK *** 1 lock held by syz-executor.0/9788: #0: (&sbi->lock){+.+.}, at: [] reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 stack backtrace: CPU: 0 PID: 9788 Comm: syz-executor.0 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1905 [inline] check_prevs_add kernel/locking/lockdep.c:2022 [inline] validate_chain kernel/locking/lockdep.c:2464 [inline] __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 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+0x64/0x260 fs/super.c:1342 sb_start_write include/linux/fs.h:1551 [inline] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497 reiserfs_ioctl+0x18e/0x8b0 fs/reiserfs/ioctl.c:110 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fae46dae0d9 RSP: 002b:00007fae45320168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fae46ecdf80 RCX: 00007fae46dae0d9 RDX: 0000000020000380 RSI: 0000000040087602 RDI: 0000000000000005 RBP: 00007fae46e09ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffee1082b9f R14: 00007fae45320300 R15: 0000000000022000 REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal 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 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal audit: type=1800 audit(1671647486.842:12): pid=9926 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13950 res=0 REISERFS (device loop0): using ordered data mode reiserfs: using flush barriers REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. audit: type=1800 audit(1671647488.552:13): pid=9970 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=13958 res=0 audit: type=1800 audit(1671647488.582:14): pid=9968 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13959 res=0 REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal REISERFS (device loop0): using ordered data mode reiserfs: using flush barriers REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 audit: type=1800 audit(1671647489.212:15): pid=9989 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="bus" dev="sda1" ino=13964 res=0 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal audit: type=1800 audit(1671647489.742:16): pid=10003 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=13959 res=0 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 audit: type=1800 audit(1671647489.762:17): pid=10006 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13965 res=0 REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. audit: type=1800 audit(1671647490.372:18): pid=10012 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="bus" dev="sda1" ino=13895 res=0 REISERFS (device loop5): checking transaction log (loop5) audit: type=1800 audit(1671647490.712:19): pid=10022 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13944 res=0 audit: type=1800 audit(1671647490.742:20): pid=10024 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=13945 res=0 REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal REISERFS (device loop0): using ordered data mode reiserfs: using flush barriers REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) audit: type=1800 audit(1671647491.492:21): pid=10054 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="bus" dev="sda1" ino=13959 res=0 REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal EXT4-fs (loop1): mounting ext2 file system using the ext4 subsystem REISERFS (device loop5): using ordered data mode EXT4-fs error (device loop1): ext4_ext_check_inode:510: inode #15: comm syz-executor.1: pblk 0 bad header/extent: invalid eh_entries - magic f30a, entries 24833, max 4(4), depth 0(0) reiserfs: using flush barriers EXT4-fs error (device loop1): ext4_orphan_get:1244: comm syz-executor.1: couldn't read orphan inode 15 (err -117) 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) EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue overlayfs: fs on './file0' does not support file handles, falling back to index=off. REISERFS (device loop5): Using r5 hash to sort names overlayfs: upper fs needs to support d_type. overlayfs: upper fs does not support xattr. REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. EXT4-fs (loop1): mounting ext2 file system using the ext4 subsystem EXT4-fs error (device loop1): ext4_ext_check_inode:510: inode #15: comm syz-executor.1: pblk 0 bad header/extent: invalid eh_entries - magic f30a, entries 24833, max 4(4), depth 0(0) EXT4-fs error (device loop1): ext4_orphan_get:1244: comm syz-executor.1: couldn't read orphan inode 15 (err -117) EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop3): mounting ext2 file system using the ext4 subsystem EXT4-fs error (device loop3): ext4_ext_check_inode:510: inode #15: comm syz-executor.3: pblk 0 bad header/extent: invalid eh_entries - magic f30a, entries 24833, max 4(4), depth 0(0) overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. EXT4-fs error (device loop3): ext4_orphan_get:1244: comm syz-executor.3: couldn't read orphan inode 15 (err -117) syz-executor.5 (10125) used greatest stack depth: 24224 bytes left EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop1): mounting ext2 file system using the ext4 subsystem overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. EXT4-fs error (device loop1): ext4_ext_check_inode:510: inode #15: comm syz-executor.1: pblk 0 bad header/extent: invalid eh_entries - magic f30a, entries 24833, max 4(4), depth 0(0) overlayfs: upper fs does not support xattr. EXT4-fs error (device loop1): ext4_orphan_get:1244: comm syz-executor.1: couldn't read orphan inode 15 (err -117) EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop3): mounting ext2 file system using the ext4 subsystem overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. EXT4-fs error (device loop3): ext4_ext_check_inode:510: inode #15: comm syz-executor.3: pblk 0 bad header/extent: invalid eh_entries - magic f30a, entries 24833, max 4(4), depth 0(0) md: invalid raid superblock magic on mtdblock0 EXT4-fs error (device loop3): ext4_orphan_get:1244: comm syz-executor.3: couldn't read orphan inode 15 (err -117) md: mtdblock0 does not have a valid v0.0 superblock, not importing! md: md_import_device returned -22 EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. JFS: discard option not supported on device md: invalid raid superblock magic on mtdblock0 md: mtdblock0 does not have a valid v0.0 superblock, not importing! md: md_import_device returned -22 EXT4-fs (loop1): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop3): mounting ext2 file system using the ext4 subsystem EXT4-fs error (device loop1): ext4_ext_check_inode:510: inode #15: comm syz-executor.1: pblk 0 bad header/extent: invalid eh_entries - magic f30a, entries 24833, max 4(4), depth 0(0) md: invalid raid superblock magic on mtdblock0 md: mtdblock0 does not have a valid v0.0 superblock, not importing! EXT4-fs error (device loop3): ext4_ext_check_inode:510: inode #15: comm syz-executor.3: pblk 0 bad header/extent: invalid eh_entries - magic f30a, entries 24833, max 4(4), depth 0(0) EXT4-fs error (device loop1): ext4_orphan_get:1244: comm syz-executor.1: couldn't read orphan inode 15 (err -117) md: md_import_device returned -22 EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop3): ext4_orphan_get:1244: comm syz-executor.3: couldn't read orphan inode 15 (err -117) EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue md: invalid raid superblock magic on mtdblock0 md: mtdblock0 does not have a valid v0.0 superblock, not importing! md: md_import_device returned -22 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: upper fs needs to support d_type. overlayfs: upper fs needs to support d_type. JFS: discard option not supported on device block nbd3: shutting down sockets