audit: type=1804 audit(1677538083.100:17): pid=10325 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir2738225780/syzkaller.Yv5rUO/33/bus" dev="sda1" ino=14044 res=1 EXT4-fs (loop3): no journal found EXT4-fs (loop1): no journal found ====================================================== audit: type=1800 audit(1677538083.100:18): pid=10325 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14044 res=0 WARNING: possible circular locking dependency detected 4.14.307-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/10313 is trying to acquire lock: (&ovl_i_mutex_dir_key[depth]){++++}, at: [] iterate_dir+0x387/0x5e0 fs/readdir.c:43 but task is already holding lock: (sb_writers#6){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] (sb_writers#6){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (sb_writers#6){.+.+}: 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+0x3a/0xb0 fs/namespace.c:386 ovl_xattr_set+0x4d/0x290 fs/overlayfs/inode.c:214 ovl_posix_acl_xattr_set+0x2b7/0x830 fs/overlayfs/super.c:762 __vfs_setxattr+0xdc/0x130 fs/xattr.c:150 __vfs_setxattr_noperm+0xfd/0x3d0 fs/xattr.c:181 __vfs_setxattr_locked+0x14d/0x250 fs/xattr.c:239 vfs_setxattr+0xcf/0x230 fs/xattr.c:256 setxattr+0x1a9/0x300 fs/xattr.c:523 path_setxattr+0x118/0x130 fs/xattr.c:542 SYSC_lsetxattr fs/xattr.c:564 [inline] SyS_lsetxattr+0x33/0x40 fs/xattr.c:560 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 -> #0 (&ovl_i_mutex_dir_key[depth]){++++}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 down_write_killable+0x37/0xb0 kernel/locking/rwsem.c:68 iterate_dir+0x387/0x5e0 fs/readdir.c:43 ovl_dir_read fs/overlayfs/readdir.c:306 [inline] ovl_dir_read_merged+0x2c5/0x430 fs/overlayfs/readdir.c:365 ovl_check_empty_dir+0x6e/0x200 fs/overlayfs/readdir.c:870 ovl_check_empty_and_clear+0x72/0xe0 fs/overlayfs/dir.c:306 ovl_rename+0x57d/0xe50 fs/overlayfs/dir.c:959 vfs_rename+0x560/0x1820 fs/namei.c:4498 SYSC_renameat2 fs/namei.c:4646 [inline] SyS_renameat2+0x95b/0xad0 fs/namei.c:4535 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: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_writers#6); lock(&ovl_i_mutex_dir_key[depth]); lock(sb_writers#6); lock(&ovl_i_mutex_dir_key[depth]); *** DEADLOCK *** 6 locks held by syz-executor.0/10313: #0: (sb_writers#14){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#14){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&type->s_vfs_rename_key#3){+.+.}, at: [] lock_rename+0x54/0x280 fs/namei.c:2889 #2: (&ovl_i_mutex_dir_key[depth]#2/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:754 [inline] #2: (&ovl_i_mutex_dir_key[depth]#2/1){+.+.}, at: [] lock_rename+0x132/0x280 fs/namei.c:2900 #3: (&ovl_i_mutex_dir_key[depth]#2/2){+.+.}, at: [] inode_lock_nested include/linux/fs.h:754 [inline] #3: (&ovl_i_mutex_dir_key[depth]#2/2){+.+.}, at: [] lock_rename+0x166/0x280 fs/namei.c:2901 #4: (&ovl_i_mutex_dir_key[depth]#2){++++}, at: [] inode_lock include/linux/fs.h:719 [inline] #4: (&ovl_i_mutex_dir_key[depth]#2){++++}, at: [] vfs_rename+0xbd8/0x1820 fs/namei.c:4472 #5: (sb_writers#6){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #5: (sb_writers#6){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 stack backtrace: CPU: 1 PID: 10313 Comm: syz-executor.0 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 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 down_write_killable+0x37/0xb0 kernel/locking/rwsem.c:68 iterate_dir+0x387/0x5e0 fs/readdir.c:43 ovl_dir_read fs/overlayfs/readdir.c:306 [inline] ovl_dir_read_merged+0x2c5/0x430 fs/overlayfs/readdir.c:365 ovl_check_empty_dir+0x6e/0x200 fs/overlayfs/readdir.c:870 ovl_check_empty_and_clear+0x72/0xe0 fs/overlayfs/dir.c:306 ovl_rename+0x57d/0xe50 fs/overlayfs/dir.c:959 vfs_rename+0x560/0x1820 fs/namei.c:4498 SYSC_renameat2 fs/namei.c:4646 [inline] SyS_renameat2+0x95b/0xad0 fs/namei.c:4535 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fb8f8ac90f9 RSP: 002b:00007fb8f703b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fb8f8be8f80 RCX: 00007fb8f8ac90f9 RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000020000100 RBP: 00007fb8f8b24ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff217358ff R14: 00007fb8f703b300 R15: 0000000000022000 print_req_error: I/O error, dev loop3, sector 0 Buffer I/O error on dev loop3, logical block 0, async page read print_req_error: I/O error, dev loop3, sector 6 Buffer I/O error on dev loop3, logical block 3, async page read EXT4-fs error (device loop2): ext4_get_journal_inode:4634: comm syz-executor.2: inode #16777216: comm syz-executor.2: iget: illegal inode # EXT4-fs error (device loop1): ext4_get_journal_inode:4634: comm syz-executor.1: inode #16777216: comm syz-executor.1: iget: illegal inode # EXT4-fs (loop1): no journal found EXT4-fs (loop2): no journal found audit: type=1804 audit(1677538084.080:19): pid=10359 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir3952881030/syzkaller.2h2pMa/28/bus" dev="sda1" ino=14049 res=1 audit: type=1800 audit(1677538084.080:20): pid=10359 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="bus" dev="sda1" ino=14049 res=0 EXT4-fs error (device loop2): ext4_get_journal_inode:4634: comm syz-executor.2: inode #16777216: comm syz-executor.2: iget: illegal inode # EXT4-fs error (device loop1): ext4_get_journal_inode:4634: comm syz-executor.1: inode #16777216: comm syz-executor.1: iget: illegal inode # overlayfs: fs on 'file0' does not support file handles, falling back to index=off. EXT4-fs error (device loop3): ext4_get_journal_inode:4634: comm syz-executor.3: inode #16777216: comm syz-executor.3: iget: illegal inode # overlayfs: fs on './file0' does not support file handles, falling back to index=off. EXT4-fs (loop2): no journal found EXT4-fs (loop3): no journal found EXT4-fs (loop1): no journal found 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. EXT4-fs error (device loop5): ext4_get_journal_inode:4634: comm syz-executor.5: inode #16777216: comm syz-executor.5: iget: illegal inode # unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 EXT4-fs (loop5): no journal found EXT4-fs error (device loop0): ext4_get_journal_inode:4634: comm syz-executor.0: inode #16777216: comm syz-executor.0: iget: illegal inode # EXT4-fs error (device loop3): ext4_get_journal_inode:4634: comm syz-executor.3: inode #16777216: comm syz-executor.3: iget: illegal inode # EXT4-fs (loop0): no journal found EXT4-fs (loop3): no journal found EXT4-fs error (device loop2): ext4_get_journal_inode:4634: comm syz-executor.2: inode #16777216: comm syz-executor.2: iget: illegal inode # overlayfs: fs on 'file0' does not support file handles, falling back to index=off. EXT4-fs (loop2): no journal found overlayfs: fs on './file0' does not support file handles, falling back to index=off. EXT4-fs error (device loop5): ext4_get_journal_inode:4634: comm syz-executor.5: inode #16777216: comm syz-executor.5: iget: illegal inode # EXT4-fs (loop5): no journal found EXT4-fs error (device loop0): ext4_get_journal_inode:4634: comm syz-executor.0: inode #16777216: comm syz-executor.0: iget: illegal inode # EXT4-fs (loop0): no journal found 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: 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: 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: 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: fs on 'file0' does not support file handles, falling back to index=off. EXT4-fs error (device loop5): ext4_get_journal_inode:4634: comm syz-executor.5: inode #16777216: comm syz-executor.5: iget: illegal inode # overlayfs: fs on './file0' does not support file handles, falling back to index=off. EXT4-fs error (device loop0): ext4_get_journal_inode:4634: comm syz-executor.0: inode #16777216: comm syz-executor.0: iget: illegal inode # 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. EXT4-fs (loop5): no journal found EXT4-fs (loop0): no journal found 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: 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: 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: 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: 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: 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: 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. nla_parse: 4 callbacks suppressed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue overlayfs: fs on 'file0' does not support file handles, falling back to index=off. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal overlayfs: fs on './file0' does not support file handles, falling back to index=off. REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): checking transaction log (loop4) REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. REISERFS (device loop4): checking transaction log (loop4) netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop4): checking transaction log (loop4) REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop3): Using r5 hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): checking transaction log (loop4) REISERFS (device loop3): Using r5 hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): checking transaction log (loop4) 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 loop4): Using r5 hash to sort names REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop3): Using r5 hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal REISERFS (device loop2): using ordered data mode REISERFS (device loop0): Using r5 hash to sort names reiserfs: using flush barriers REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop2): checking transaction log (loop2) REISERFS (device loop2): Using r5 hash to sort names REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue REISERFS (device loop4): checking transaction log (loop4) REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal REISERFS (device loop2): using ordered data mode reiserfs: using flush barriers REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 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 loop2): checking transaction log (loop2) REISERFS (device loop0): checking transaction log (loop0) EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop2): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal REISERFS (device loop4): 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 EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue REISERFS (device loop4): using ordered data mode REISERFS (device loop0): checking transaction log (loop0) reiserfs: using flush barriers REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop2): using ordered data mode REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop4): checking transaction log (loop4) reiserfs: using flush barriers REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop2): checking transaction log (loop2) REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop2): Using r5 hash to sort names REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.