REISERFS (device loop0): Using rupasov 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.0/25112 is trying to acquire lock: 00000000593cfb11 (sb_writers#25){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] 00000000593cfb11 (sb_writers#25){.+.+}, at: mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 but task is already holding lock: 00000000765c8817 (&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){+.+.}: reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 reiserfs_lookup+0x171/0x490 fs/reiserfs/namei.c:363 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 lookup_one_len+0x163/0x190 fs/namei.c:2544 reiserfs_lookup_privroot+0x92/0x280 fs/reiserfs/xattr.c:970 reiserfs_fill_super+0x1f12/0x2d80 fs/reiserfs/super.c:2187 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 -> #1 (&type->i_mutex_dir_key#11){+.+.}: inode_lock include/linux/fs.h:748 [inline] chown_common+0x2d0/0x550 fs/open.c:648 do_fchownat+0x126/0x1e0 fs/open.c:681 __do_sys_chown fs/open.c:701 [inline] __se_sys_chown fs/open.c:699 [inline] __x64_sys_chown+0x77/0xb0 fs/open.c:699 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (sb_writers#25){.+.+}: 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+0x6e/0x2a0 fs/super.c:1366 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 other info that might help us debug this: Chain exists of: sb_writers#25 --> &type->i_mutex_dir_key#11 --> &sbi->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->lock); lock(&type->i_mutex_dir_key#11); lock(&sbi->lock); lock(sb_writers#25); *** DEADLOCK *** 1 lock held by syz-executor.0/25112: #0: 00000000765c8817 (&sbi->lock){+.+.}, at: reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 stack backtrace: CPU: 1 PID: 25112 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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 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+0x6e/0x2a0 fs/super.c:1366 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 RIP: 0033:0x7f586e1385f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f586caab168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f586e258f80 RCX: 00007f586e1385f9 RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005 RBP: 00007f586e1937b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffed94628cf R14: 00007f586caab300 R15: 0000000000022000 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) REISERFS (device loop0): Using rupasov hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir 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) REISERFS (device loop0): Using rupasov hash to sort names REISERFS (device loop0): 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) REISERFS (device loop0): Using rupasov hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. kauditd_printk_skb: 6 callbacks suppressed audit: type=1326 audit(1666567895.338:900): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25210 comm="syz-executor.3" exe="/root/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dda4765f9 code=0x0 audit: type=1326 audit(1666567895.398:901): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fa0ad13c5f9 code=0x7ffc0000 audit: type=1326 audit(1666567895.398:902): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=41 compat=0 ip=0x7fa0ad13c5f9 code=0x7ffc0000 audit: type=1326 audit(1666567895.398:903): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fa0ad13c5f9 code=0x7ffc0000 audit: type=1326 audit(1666567895.398:904): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=41 compat=0 ip=0x7fa0ad13dc77 code=0x7ffc0000 audit: type=1326 audit(1666567895.398:905): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=44 compat=0 ip=0x7fa0ad0ee54c code=0x7ffc0000 audit: type=1326 audit(1666567895.398:906): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=45 compat=0 ip=0x7fa0ad0ee484 code=0x7ffc0000 audit: type=1326 audit(1666567895.398:907): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=45 compat=0 ip=0x7fa0ad0ee484 code=0x7ffc0000 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=1326 audit(1666567895.398:908): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=3 compat=0 ip=0x7fa0ad0ee3cb code=0x7ffc0000 REISERFS (device loop0): Using rupasov hash to sort names audit: type=1326 audit(1666567895.428:909): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25212 comm="syz-executor.4" exe="/root/syz-executor.4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fa0ad13c5f9 code=0x7ffc0000 REISERFS (device loop0): 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) REISERFS (device loop0): Using rupasov hash to sort names IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 FAT-fs (loop0): bogus number of reserved sectors FAT-fs (loop0): Can't find a valid FAT filesystem IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop1): Can't find a valid FAT filesystem IPVS: ftp: loaded support on port[0] = 21 kauditd_printk_skb: 261 callbacks suppressed audit: type=1326 audit(1666567900.948:1171): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25677 comm="syz-executor.3" exe="/root/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dda4765f9 code=0x0 audit: type=1326 audit(1666567901.068:1172): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25677 comm="syz-executor.3" exe="/root/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dda4765f9 code=0x0 IPVS: ftp: loaded support on port[0] = 21 FAT-fs (loop1): bogus number of reserved sectors IPVS: ftp: loaded support on port[0] = 21 FAT-fs (loop0): bogus number of reserved sectors FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop0): Can't find a valid FAT filesystem IPVS: ftp: loaded support on port[0] = 21 audit: type=1326 audit(1666567901.848:1173): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25776 comm="syz-executor.3" exe="/root/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dda4765f9 code=0x0 IPVS: ftp: loaded support on port[0] = 21 FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop1): Can't find a valid FAT filesystem audit: type=1326 audit(1666567903.078:1174): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25877 comm="syz-executor.3" exe="/root/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dda4765f9 code=0x0 FAT-fs (loop0): bogus number of reserved sectors FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop0): Can't find a valid FAT filesystem FAT-fs (loop1): Can't find a valid FAT filesystem audit: type=1326 audit(1666567903.238:1175): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25906 comm="syz-executor.3" exe="/root/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dda4765f9 code=0x0 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 audit: type=1326 audit(1666567903.848:1176): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25961 comm="syz-executor.3" exe="/root/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dda4765f9 code=0x0 audit: type=1326 audit(1666567903.968:1177): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=25975 comm="syz-executor.3" exe="/root/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7dda4765f9 code=0x0 FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop1): Can't find a valid FAT filesystem IPVS: ftp: loaded support on port[0] = 21