REISERFS (device loop1): journal params: device loop1, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop1): checking transaction log (loop1) REISERFS (device loop1): Using r5 hash to sort names REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 4.14.302-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.1/10463 is trying to acquire lock: (sb_writers#20){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] (sb_writers#20){.+.+}, 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+0x1d12/0x2990 fs/reiserfs/super.c:2187 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#10){+.+.}: 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#20){.+.+}: 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#20 --> &type->i_mutex_dir_key#10 --> &sbi->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->lock); lock(&type->i_mutex_dir_key#10); lock(&sbi->lock); lock(sb_writers#20); *** DEADLOCK *** 1 lock held by syz-executor.1/10463: #0: (&sbi->lock){+.+.}, at: [] reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 stack backtrace: CPU: 0 PID: 10463 Comm: syz-executor.1 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: 0033:0x7f0c21ae70a9 RSP: 002b:00007f0c20059168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0c21c06f80 RCX: 00007f0c21ae70a9 RDX: 0000000020000380 RSI: 0000000040087602 RDI: 0000000000000005 RBP: 00007f0c21b42ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc79cae4bf R14: 00007f0c20059300 R15: 0000000000022000 EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal REISERFS (device loop1): using ordered data mode reiserfs: using flush barriers REISERFS (device loop1): journal params: device loop1, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop1): checking transaction log (loop1) REISERFS (device loop1): Using r5 hash to sort names REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal REISERFS (device loop1): using ordered data mode reiserfs: using flush barriers REISERFS (device loop1): journal params: device loop1, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop1): checking transaction log (loop1) REISERFS (device loop1): Using r5 hash to sort names REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal REISERFS (device loop1): using ordered data mode reiserfs: using flush barriers REISERFS (device loop1): journal params: device loop1, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop1): checking transaction log (loop1) REISERFS (device loop1): Using r5 hash to sort names REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. device batadv0 entered promiscuous mode 8021q: adding VLAN 0 to HW filter on device macvlan2 bond0: Enslaving macvlan2 as an active interface with an up link audit: type=1804 audit(1671728695.755:13): pid=10741 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir3475151694/syzkaller.m2V5dQ/39/bus" dev="sda1" ino=14056 res=1 audit: type=1804 audit(1671728695.775:14): pid=10741 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir3475151694/syzkaller.m2V5dQ/39/bus" dev="sda1" ino=14056 res=1 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. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. 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. device bond1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready 8021q: adding VLAN 0 to HW filter on device bond1 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. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. 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. device bond2 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond2: link is not ready 8021q: adding VLAN 0 to HW filter on device bond2 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. device bond1 entered promiscuous mode overlayfs: fs on 'file0' does not support file handles, falling back to index=off. IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready 8021q: adding VLAN 0 to HW filter on device bond1 overlayfs: fs on './file0' does not support file handles, falling back to index=off. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. device bond1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready overlayfs: fs on './file0' does not support file handles, falling back to index=off. 8021q: adding VLAN 0 to HW filter on device bond1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. 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. device bond3 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond3: link is not ready 8021q: adding VLAN 0 to HW filter on device bond3 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. 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. device bond2 entered promiscuous mode overlayfs: fs on './file0' does not support file handles, falling back to index=off. IPv6: ADDRCONF(NETDEV_UP): bond2: link is not ready 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. 8021q: adding VLAN 0 to HW filter on device bond2 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. 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. device bond2 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond2: link is not ready 8021q: adding VLAN 0 to HW filter on device bond2 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. device bond4 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond4: link is not ready overlayfs: fs on './file0' does not support file handles, falling back to index=off. 8021q: adding VLAN 0 to HW filter on device bond4 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. device bond3 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond3: link is not ready 8021q: adding VLAN 0 to HW filter on device bond3 overlayfs: fs on './file0' does not support file handles, falling back to index=off. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. device bond3 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond3: link is not ready 8021q: adding VLAN 0 to HW filter on device bond3 sctp: [Deprecated]: syz-executor.1 (pid 11386) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead F2FS-fs (loop2): invalid crc value F2FS-fs (loop2): Found nat_bits in checkpoint F2FS-fs (loop2): Mounted with checkpoint version = 48b305e4 audit: type=1800 audit(1671728700.316:15): pid=11295 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name=".pending_reads" dev="loop2" ino=10 res=0 audit: type=1804 audit(1671728700.316:16): pid=11295 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir573265435/syzkaller.VidMgf/55/file0/bus" dev="loop2" ino=11 res=1 audit: type=1804 audit(1671728700.316:17): pid=11295 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir573265435/syzkaller.VidMgf/55/file0/bus" dev="loop2" ino=11 res=1 audit: type=1804 audit(1671728700.436:18): pid=11402 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir573265435/syzkaller.VidMgf/55/file0/bus" dev="loop2" ino=11 res=1 IPVS: ftp: loaded support on port[0] = 21 F2FS-fs (loop0): invalid crc value audit: type=1800 audit(1671728701.916:19): pid=11417 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name=".pending_reads" dev="sda1" ino=13933 res=0 audit: type=1804 audit(1671728701.956:20): pid=11417 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir3572398113/syzkaller.kH8seY/51/bus" dev="sda1" ino=13939 res=1 F2FS-fs (loop0): Found nat_bits in checkpoint audit: type=1804 audit(1671728701.966:21): pid=11417 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.4" name="/root/syzkaller-testdir3572398113/syzkaller.kH8seY/51/bus" dev="sda1" ino=13939 res=1 F2FS-fs (loop2): invalid crc value F2FS-fs (loop2): Found nat_bits in checkpoint audit: type=1804 audit(1671728702.076:22): pid=11478 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.4" name="/root/syzkaller-testdir3572398113/syzkaller.kH8seY/51/bus" dev="sda1" ino=13939 res=1