audit: type=1800 audit(1674327740.944:555): pid=26594 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=13989 res=0 REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. audit: type=1804 audit(1674327741.084:556): pid=26645 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir1713130367/syzkaller.zqBCzE/5037/bus" dev="sda1" ino=13989 res=1 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/26634 is trying to acquire lock: 000000007d903bd0 (sb_writers#34){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] 000000007d903bd0 (sb_writers#34){.+.+}, at: mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 but task is already holding lock: 0000000030d78de6 (&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_hash+0x117/0x180 fs/namei.c:1547 filename_create+0x186/0x490 fs/namei.c:3639 user_path_create fs/namei.c:3696 [inline] do_mkdirat+0xa0/0x2d0 fs/namei.c:3834 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&type->i_mutex_dir_key#16/1){+.+.}: inode_lock_nested include/linux/fs.h:783 [inline] filename_create+0x15a/0x490 fs/namei.c:3638 user_path_create fs/namei.c:3696 [inline] do_mkdirat+0xa0/0x2d0 fs/namei.c:3834 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (sb_writers#34){.+.+}: audit: type=1804 audit(1674327741.244:557): pid=26646 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir1713130367/syzkaller.zqBCzE/5037/bus" dev="sda1" ino=13989 res=1 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#34 --> &type->i_mutex_dir_key#16/1 --> &sbi->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->lock); lock(&type->i_mutex_dir_key#16/1); lock(&sbi->lock); lock(sb_writers#34); *** DEADLOCK *** 1 lock held by syz-executor.4/26634: #0: 0000000030d78de6 (&sbi->lock){+.+.}, at: reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 stack backtrace: CPU: 0 PID: 26634 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 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: 0033:0x7f908c2fb0c9 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:00007f908a86d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f908c41af80 RCX: 00007f908c2fb0c9 RDX: 0000000000000000 RSI: 0000000040087602 RDI: 0000000000000004 RBP: 00007f908c356ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd13eea75f R14: 00007f908a86d300 R15: 0000000000022000 audit: type=1804 audit(1674327741.624:558): pid=26645 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir1713130367/syzkaller.zqBCzE/5037/bus" dev="sda1" ino=13989 res=1 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 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 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 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 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 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 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 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. audit: type=1804 audit(1674327743.704:559): pid=26900 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1901585587/syzkaller.Bw00ym/4593/bus" dev="sda1" ino=14610 res=1 IPVS: ftp: loaded support on port[0] = 21 audit: type=1800 audit(1674327743.704:560): pid=26900 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=14610 res=0 audit: type=1804 audit(1674327743.764:561): pid=26913 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir1901585587/syzkaller.Bw00ym/4593/bus" dev="sda1" ino=14610 res=1 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 audit: type=1800 audit(1674327743.764:562): pid=26913 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=14610 res=0 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 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 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. IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 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 REISERFS (device loop4): checking transaction log (loop4) IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 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 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. IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 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 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. IPVS: ftp: loaded support on port[0] = 21 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 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 warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "" REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal netlink: 'syz-executor.3': attribute type 1 has an invalid length. 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 device bond1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready REISERFS (device loop4): checking transaction log (loop4) 8021q: adding VLAN 0 to HW filter on device bond1 bond1: making interface bridge1 the new active one device bridge1 entered promiscuous mode bond1: Enslaving bridge1 as an active interface with an up link IPv6: ADDRCONF(NETDEV_CHANGE): bond1: link becomes ready REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. netlink: 'syz-executor.3': attribute type 1 has an invalid length. device bond2 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond2: link is not ready 8021q: adding VLAN 0 to HW filter on device bond2 bond2: making interface bridge2 the new active one device bridge2 entered promiscuous mode bond2: Enslaving bridge2 as an active interface with an up link IPv6: ADDRCONF(NETDEV_CHANGE): bond2: link becomes ready netlink: 'syz-executor.3': attribute type 1 has an invalid length. device bond3 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond3: link is not ready 8021q: adding VLAN 0 to HW filter on device bond3 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) bond3: making interface bridge3 the new active one device bridge3 entered promiscuous mode REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "áå-ØápqãoÞuübÓ“¤ (œ" bond3: Enslaving bridge3 as an active interface with an up link IPv6: ADDRCONF(NETDEV_CHANGE): bond3: link becomes ready netlink: 'syz-executor.3': attribute type 1 has an invalid length. UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) device bond4 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond4: link is not ready 8021q: adding VLAN 0 to HW filter on device bond4 bond4: making interface bridge4 the new active one device bridge4 entered promiscuous mode bond4: Enslaving bridge4 as an active interface with an up link IPv6: ADDRCONF(NETDEV_CHANGE): bond4: link becomes ready REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "áå-ØápqãoÞuübÓ“¤ (œ" UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "áå-ØápqãoÞuübÓ“¤ (œ" REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "0x0000000000000000ÿÿÿÿ017777777777777777777770x0000000000000004" caif:caif_disconnect_client(): nothing to disconnect