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 loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/8218 is trying to acquire lock: 000000002c7a9cfe (&journal->j_mutex){+.+.}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline] 000000002c7a9cfe (&journal->j_mutex){+.+.}, at: lock_journal fs/reiserfs/journal.c:538 [inline] 000000002c7a9cfe (&journal->j_mutex){+.+.}, at: do_journal_begin_r+0x298/0x10b0 fs/reiserfs/journal.c:3057 but task is already holding lock: 000000003b45ba8d (sb_writers#20){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] 000000003b45ba8d (sb_writers#20){.+.+}, at: mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (sb_writers#20){.+.+}: sb_start_write include/linux/fs.h:1579 [inline] mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 reiserfs_ioctl+0x1a7/0x9a0 fs/reiserfs/ioctl.c:110 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 -> #1 (&sbi->lock){+.+.}: reiserfs_write_lock_nested+0x65/0xe0 fs/reiserfs/lock.c:78 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:817 [inline] lock_journal fs/reiserfs/journal.c:538 [inline] do_journal_begin_r+0x2a2/0x10b0 fs/reiserfs/journal.c:3057 journal_begin+0x162/0x400 fs/reiserfs/journal.c:3265 reiserfs_fill_super+0x1a81/0x2d80 fs/reiserfs/super.c:2117 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&journal->j_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline] lock_journal fs/reiserfs/journal.c:538 [inline] do_journal_begin_r+0x298/0x10b0 fs/reiserfs/journal.c:3057 journal_begin+0x162/0x400 fs/reiserfs/journal.c:3265 reiserfs_dirty_inode+0xff/0x250 fs/reiserfs/super.c:716 __mark_inode_dirty+0x16b/0x1140 fs/fs-writeback.c:2164 mark_inode_dirty include/linux/fs.h:2086 [inline] reiserfs_ioctl+0x7dc/0x9a0 fs/reiserfs/ioctl.c:118 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: Chain exists of: &journal->j_mutex --> &sbi->lock --> sb_writers#20 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_writers#20); lock(&sbi->lock); lock(sb_writers#20); lock(&journal->j_mutex); *** DEADLOCK *** 1 lock held by syz-executor.0/8218: #0: 000000003b45ba8d (sb_writers#20){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000003b45ba8d (sb_writers#20){.+.+}, at: mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 stack backtrace: CPU: 1 PID: 8218 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 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 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:816 [inline] lock_journal fs/reiserfs/journal.c:538 [inline] do_journal_begin_r+0x298/0x10b0 fs/reiserfs/journal.c:3057 journal_begin+0x162/0x400 fs/reiserfs/journal.c:3265 reiserfs_dirty_inode+0xff/0x250 fs/reiserfs/super.c:716 __mark_inode_dirty+0x16b/0x1140 fs/fs-writeback.c:2164 mark_inode_dirty include/linux/fs.h:2086 [inline] reiserfs_ioctl+0x7dc/0x9a0 fs/reiserfs/ioctl.c:118 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: 0033:0x7f267a5900d9 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:00007f2678b02168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f267a6aff80 RCX: 00007f267a5900d9 RDX: 0000000020000380 RSI: 0000000040087602 RDI: 0000000000000004 RBP: 00007f267a5ebae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcb68cb9cf R14: 00007f2678b02300 R15: 0000000000022000 BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop1 BTRFS error (device loop1): unsupported checksum algorithm 2 XFS (loop5): Mounting V4 Filesystem BTRFS error (device loop1): superblock checksum mismatch BTRFS error (device loop1): open_ctree failed XFS (loop2): Mounting V4 Filesystem XFS (loop4): Mounting V4 Filesystem XFS (loop5): Ending clean mount XFS (loop4): Ending clean mount XFS (loop2): Ending clean mount XFS (loop4): Unmounting Filesystem XFS (loop5): Unmounting Filesystem REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal XFS (loop2): Unmounting Filesystem XFS (loop3): Mounting V4 Filesystem REISERFS (device loop0): using ordered data mode reiserfs: using flush barriers XFS (loop3): Ending clean mount 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 loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. BTRFS error (device loop1): unsupported checksum algorithm 2 BTRFS error (device loop1): superblock checksum mismatch BTRFS error (device loop1): open_ctree failed XFS (loop3): Unmounting Filesystem 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 XFS (loop5): Mounting V4 Filesystem REISERFS (device loop0): checking transaction log (loop0) XFS (loop5): Ending clean mount kauditd_printk_skb: 10 callbacks suppressed audit: type=1804 audit(1671646506.121:2613): pid=8308 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1157411225/syzkaller.4RW0eK/668/file0/bus" dev="loop5" ino=41 res=1 XFS (loop5): Unmounting Filesystem XFS (loop4): Mounting V4 Filesystem XFS (loop4): Ending clean mount XFS (loop4): Unmounting Filesystem REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. BTRFS error (device loop1): unsupported checksum algorithm 2 BTRFS error (device loop1): superblock checksum mismatch BTRFS error (device loop1): open_ctree failed XFS (loop2): Mounting V4 Filesystem XFS (loop2): Ending clean mount audit: type=1804 audit(1671646506.721:2614): pid=8338 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir283142185/syzkaller.ZVkVqS/534/file0/bus" dev="loop2" ino=41 res=1 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=1804 audit(1671646506.861:2615): pid=8440 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir283142185/syzkaller.ZVkVqS/534/file0/bus" dev="loop2" ino=41 res=1 REISERFS (device loop0): checking transaction log (loop0) audit: type=1804 audit(1671646506.941:2616): pid=8441 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir283142185/syzkaller.ZVkVqS/534/file0/bus" dev="loop2" ino=41 res=1 REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. XFS (loop3): Mounting V4 Filesystem XFS (loop3): Ending clean mount audit: type=1804 audit(1671646507.261:2617): pid=8379 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir328904819/syzkaller.lvY2sg/525/file0/bus" dev="loop3" ino=41 res=1 XFS (loop2): Unmounting Filesystem XFS (loop5): Mounting V4 Filesystem XFS (loop5): Ending clean mount audit: type=1804 audit(1671646507.421:2618): pid=8395 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1157411225/syzkaller.4RW0eK/669/file0/bus" dev="loop5" ino=41 res=1 audit: type=1804 audit(1671646507.451:2619): pid=8469 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir328904819/syzkaller.lvY2sg/525/file0/bus" dev="loop3" ino=41 res=1 XFS (loop5): Unmounting Filesystem audit: type=1804 audit(1671646507.561:2620): pid=8484 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir328904819/syzkaller.lvY2sg/525/file0/bus" dev="loop3" ino=41 res=1 audit: type=1804 audit(1671646507.641:2621): pid=8465 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir328904819/syzkaller.lvY2sg/525/file0/bus" dev="loop3" ino=41 res=1 XFS (loop4): Mounting V4 Filesystem BTRFS error (device loop1): unsupported checksum algorithm 2 BTRFS error (device loop1): superblock checksum mismatch BTRFS error (device loop1): open_ctree failed XFS (loop4): Ending clean mount audit: type=1800 audit(1671646507.781:2622): pid=8502 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14719 res=0 XFS (loop4): Unmounting Filesystem XFS (loop3): Unmounting Filesystem XFS (loop2): Mounting V4 Filesystem XFS (loop2): Ending clean mount XFS (loop5): Mounting V4 Filesystem XFS (loop5): Ending clean mount XFS (loop4): Mounting V4 Filesystem XFS (loop5): Unmounting Filesystem XFS (loop4): Ending clean mount XFS (loop3): Mounting V4 Filesystem XFS (loop3): Ending clean mount XFS (loop2): Unmounting Filesystem XFS (loop4): Unmounting Filesystem XFS (loop3): Unmounting Filesystem XFS (loop5): Mounting V4 Filesystem XFS (loop5): Ending clean mount XFS (loop5): Unmounting Filesystem XFS (loop2): Mounting V4 Filesystem XFS (loop4): Mounting V4 Filesystem XFS (loop2): Ending clean mount XFS (loop4): Ending clean mount XFS (loop4): Unmounting Filesystem XFS (loop3): Mounting V4 Filesystem XFS (loop2): Unmounting Filesystem XFS (loop3): Ending clean mount XFS (loop3): Unmounting Filesystem XFS (loop4): Mounting V4 Filesystem XFS (loop4): Ending clean mount kauditd_printk_skb: 16 callbacks suppressed audit: type=1804 audit(1671646511.401:2639): pid=8737 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir172667153/syzkaller.yYy8Wv/552/file0/bus" dev="loop4" ino=41 res=1 XFS (loop4): Unmounting Filesystem XFS (loop5): Mounting V4 Filesystem XFS (loop5): Ending clean mount XFS (loop2): Mounting V4 Filesystem audit: type=1804 audit(1671646511.501:2640): pid=8736 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1157411225/syzkaller.4RW0eK/672/file0/bus" dev="loop5" ino=41 res=1 XFS (loop2): Ending clean mount XFS (loop5): Unmounting Filesystem audit: type=1804 audit(1671646511.561:2641): pid=8747 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir283142185/syzkaller.ZVkVqS/537/file0/bus" dev="loop2" ino=41 res=1 XFS (loop2): Unmounting Filesystem audit: type=1804 audit(1671646511.621:2642): pid=8826 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir283142185/syzkaller.ZVkVqS/537/file0/bus" dev="loop2" ino=41 res=1 audit: type=1804 audit(1671646511.701:2643): pid=8831 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir283142185/syzkaller.ZVkVqS/537/file0/bus" dev="loop2" ino=41 res=1 XFS (loop3): Mounting V4 Filesystem XFS (loop3): Ending clean mount audit: type=1804 audit(1671646512.051:2644): pid=8793 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir328904819/syzkaller.lvY2sg/528/file0/bus" dev="loop3" ino=41 res=1 audit: type=1804 audit(1671646512.131:2645): pid=8855 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir328904819/syzkaller.lvY2sg/528/file0/bus" dev="loop3" ino=41 res=1 audit: type=1804 audit(1671646512.261:2646): pid=8857 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir328904819/syzkaller.lvY2sg/528/file0/bus" dev="loop3" ino=41 res=1 XFS (loop4): Mounting V4 Filesystem audit: type=1804 audit(1671646512.341:2647): pid=8855 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir328904819/syzkaller.lvY2sg/528/file0/bus" dev="loop3" ino=41 res=1 XFS (loop4): Ending clean mount audit: type=1804 audit(1671646512.381:2648): pid=8830 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir172667153/syzkaller.yYy8Wv/553/file0/bus" dev="loop4" ino=41 res=1 XFS (loop4): Unmounting Filesystem XFS (loop5): Mounting V4 Filesystem XFS (loop5): Ending clean mount XFS (loop5): Unmounting Filesystem XFS (loop3): Unmounting Filesystem XFS (loop2): Mounting V4 Filesystem XFS (loop4): Mounting V4 Filesystem XFS (loop2): Ending clean mount XFS (loop4): Ending clean mount XFS (loop4): Unmounting Filesystem XFS (loop5): Mounting V4 Filesystem XFS (loop5): Ending clean mount XFS (loop5): Unmounting Filesystem XFS (loop3): Mounting V4 Filesystem XFS (loop2): Unmounting Filesystem IPVS: ftp: loaded support on port[0] = 21 XFS (loop3): Ending clean mount