======================================================
WARNING: possible circular locking dependency detected
4.14.295-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.4/10084 is trying to acquire lock:
 (&journal->j_mutex){+.+.}, at: [<ffffffff81b3272b>] reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline]
 (&journal->j_mutex){+.+.}, at: [<ffffffff81b3272b>] lock_journal fs/reiserfs/journal.c:537 [inline]
 (&journal->j_mutex){+.+.}, at: [<ffffffff81b3272b>] do_journal_begin_r+0x26b/0xde0 fs/reiserfs/journal.c:3054

but task is already holding lock:
 (sb_writers#14){.+.+}, at: [<ffffffff818e09ad>] sb_start_write include/linux/fs.h:1551 [inline]
 (sb_writers#14){.+.+}, at: [<ffffffff818e09ad>] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (sb_writers#14){.+.+}:
       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+0x46/0xbb

-> #1 (&sbi->lock){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       reiserfs_write_lock_nested+0x59/0xd0 fs/reiserfs/lock.c:78
       reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:817 [inline]
       lock_journal fs/reiserfs/journal.c:537 [inline]
       do_journal_begin_r+0x276/0xde0 fs/reiserfs/journal.c:3054
       journal_begin+0x162/0x3d0 fs/reiserfs/journal.c:3262
       reiserfs_fill_super+0x18f4/0x2990 fs/reiserfs/super.c:2117
       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+0x46/0xbb

-> #0 (&journal->j_mutex){+.+.}:
       lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline]
       lock_journal fs/reiserfs/journal.c:537 [inline]
       do_journal_begin_r+0x26b/0xde0 fs/reiserfs/journal.c:3054
       journal_begin+0x162/0x3d0 fs/reiserfs/journal.c:3262
       reiserfs_dirty_inode+0xd9/0x200 fs/reiserfs/super.c:716
       __mark_inode_dirty+0x11e/0xf40 fs/fs-writeback.c:2134
       mark_inode_dirty include/linux/fs.h:2026 [inline]
       reiserfs_ioctl+0x6f6/0x8b0 fs/reiserfs/ioctl.c:118
       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+0x46/0xbb

other info that might help us debug this:

Chain exists of:
  &journal->j_mutex --> &sbi->lock --> sb_writers#14

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(sb_writers#14);
                               lock(&sbi->lock);
                               lock(sb_writers#14);
  lock(&journal->j_mutex);

 *** DEADLOCK ***

1 lock held by syz-executor.4/10084:
 #0:  (sb_writers#14){.+.+}, at: [<ffffffff818e09ad>] sb_start_write include/linux/fs.h:1551 [inline]
 #0:  (sb_writers#14){.+.+}, at: [<ffffffff818e09ad>] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497

stack backtrace:
CPU: 0 PID: 10084 Comm: syz-executor.4 Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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
 __mutex_lock_common kernel/locking/mutex.c:756 [inline]
 __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline]
 lock_journal fs/reiserfs/journal.c:537 [inline]
 do_journal_begin_r+0x26b/0xde0 fs/reiserfs/journal.c:3054
 journal_begin+0x162/0x3d0 fs/reiserfs/journal.c:3262
 reiserfs_dirty_inode+0xd9/0x200 fs/reiserfs/super.c:716
 __mark_inode_dirty+0x11e/0xf40 fs/fs-writeback.c:2134
 mark_inode_dirty include/linux/fs.h:2026 [inline]
 reiserfs_ioctl+0x6f6/0x8b0 fs/reiserfs/ioctl.c:118
 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+0x46/0xbb
RIP: 0033:0x7f811cc115a9
RSP: 002b:00007f811b584168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f811cd31f80 RCX: 00007f811cc115a9
RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005
RBP: 00007f811cc6c580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff689fa9af R14: 00007f811b584300 R15: 0000000000022000
vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(4)
vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed)
vhci_hcd vhci_hcd.0: Device attached
ntfs: volume version 3.1.
vhci_hcd: connection closed
vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: disconnect device
REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal
ntfs: volume version 3.1.
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 rupasov hash to sort names
REISERFS (device loop1): 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: using flush barriers
REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal
ntfs: volume version 3.1.
REISERFS (device loop4): using ordered data mode
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: 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 loop3): checking transaction log (loop3)
REISERFS (device loop4): checking transaction log (loop4)
REISERFS (device loop3): Using rupasov hash to sort names
REISERFS (device loop4): Using rupasov hash to sort names
REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage.
REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage.
ISO 9660 Extensions: Microsoft Joliet Level 3
vhci_hcd vhci_hcd.0: pdev(5) rhport(0) sockfd(4)
vhci_hcd vhci_hcd.0: devid(0) speed(3) speed_str(high-speed)
vhci_hcd vhci_hcd.0: Device attached
vhci_hcd: connection closed
vhci_hcd: stop threads
ISO 9660 Extensions: Microsoft Joliet Level 3
vhci_hcd: release socket
vhci_hcd: disconnect device
ntfs: volume version 3.1.
vhci_hcd: vhci_device speed not set
ISO 9660 Extensions: Microsoft Joliet Level 3
REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop4): using ordered data mode
REISERFS (device loop1): using ordered data mode
reiserfs: using flush barriers
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 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 loop4): checking transaction log (loop4)
ISO 9660 Extensions: Microsoft Joliet Level 3
REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop3): using ordered data mode
REISERFS (device loop1): checking transaction log (loop1)
reiserfs: using flush barriers
REISERFS (device loop1): Using rupasov hash to sort names
REISERFS (device loop4): Using rupasov hash to sort names
REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage.
REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage.
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 loop3): Using rupasov hash to sort names
REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage.
audit: type=1804 audit(1666319559.617:2): pid=10268 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/29/bus" dev="sda1" ino=14008 res=1
audit: type=1804 audit(1666319559.647:3): pid=10268 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/29/bus" dev="sda1" ino=14008 res=1
REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop1): using ordered data mode
REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop3): using ordered data mode
reiserfs: using flush barriers
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
audit: type=1804 audit(1666319560.017:4): pid=10318 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/30/bus" dev="sda1" ino=14013 res=1
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 loop1): checking transaction log (loop1)
audit: type=1804 audit(1666319560.037:5): pid=10318 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/30/bus" dev="sda1" ino=14013 res=1
REISERFS (device loop3): checking transaction log (loop3)
REISERFS (device loop1): Using rupasov hash to sort names
REISERFS (device loop3): Using rupasov hash to sort names
REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage.
REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage.
audit: type=1800 audit(1666319560.457:6): pid=10351 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13960 res=0
audit: type=1804 audit(1666319560.727:7): pid=10369 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/31/bus" dev="sda1" ino=14019 res=1
audit: type=1804 audit(1666319560.757:8): pid=10369 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/31/bus" dev="sda1" ino=14019 res=1
IPVS: ftp: loaded support on port[0] = 21
audit: type=1804 audit(1666319561.527:9): pid=10445 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/32/bus" dev="sda1" ino=14023 res=1
audit: type=1804 audit(1666319561.567:10): pid=10445 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/32/bus" dev="sda1" ino=14023 res=1
audit: type=1800 audit(1666319561.797:11): pid=10462 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14030 res=0
kauditd_printk_skb: 9 callbacks suppressed
audit: type=1804 audit(1666319565.557:21): pid=10625 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/35/file0/bus" dev="loop0" ino=5 res=1
audit: type=1800 audit(1666319565.557:22): pid=10625 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="loop0" ino=5 res=0
audit: type=1804 audit(1666319565.757:23): pid=10629 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir3892081786/syzkaller.28LVOM/29/file0/bus" dev="loop4" ino=6 res=1
audit: type=1800 audit(1666319565.757:24): pid=10629 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=6 res=0
gfs2: not a GFS2 filesystem
audit: type=1804 audit(1666319566.717:25): pid=10696 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir3892081786/syzkaller.28LVOM/30/file0/bus" dev="loop4" ino=7 res=1
audit: type=1804 audit(1666319567.017:26): pid=10697 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir2190413455/syzkaller.O3Sndo/36/file0/bus" dev="loop0" ino=8 res=1
audit: type=1800 audit(1666319567.017:27): pid=10697 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="loop0" ino=8 res=0
audit: type=1800 audit(1666319567.057:28): pid=10696 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=7 res=0
gfs2: not a GFS2 filesystem