reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 1822, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop3): Using r5 hash to sort names ====================================================== WARNING: possible circular locking dependency detected 4.14.303-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/10958 is trying to acquire lock: (sb_writers#13){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] (sb_writers#13){.+.+}, 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#8){+.+.}: 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#13){.+.+}: 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#13 --> &type->i_mutex_dir_key#8 --> &sbi->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->lock); lock(&type->i_mutex_dir_key#8); lock(&sbi->lock); lock(sb_writers#13); *** DEADLOCK *** 1 lock held by syz-executor.3/10958: #0: (&sbi->lock){+.+.}, at: [] reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 stack backtrace: CPU: 1 PID: 10958 Comm: syz-executor.3 Not tainted 4.14.303-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 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: 0033:0x7fb6f5ae60c9 RSP: 002b:00007fb6f4058168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb6f5c05f80 RCX: 00007fb6f5ae60c9 RDX: 0000000000000000 RSI: 0000000040087602 RDI: 0000000000000003 RBP: 00007fb6f5b41ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6f41897f R14: 00007fb6f4058300 R15: 0000000000022000 bond0: option lacp_rate: mode dependency failed, not supported in mode balance-rr(0) bond0: option lacp_rate: mode dependency failed, not supported in mode balance-rr(0) bond0: option lacp_rate: mode dependency failed, not supported in mode balance-rr(0) audit: type=1804 audit(1674130101.269:21): pid=11085 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir2034502813/syzkaller.2FLhNC/40/file0" dev="sda1" ino=14048 res=1 audit: type=1804 audit(1674130102.049:22): pid=11109 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir2870731314/syzkaller.EW2lB1/43/file0" dev="sda1" ino=14087 res=1 audit: type=1804 audit(1674130102.069:23): pid=11110 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir2034502813/syzkaller.2FLhNC/41/file0" dev="sda1" ino=14091 res=1 audit: type=1804 audit(1674130102.079:24): pid=11111 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir2472095026/syzkaller.ziXUOw/40/file0" dev="sda1" ino=14089 res=1 audit: type=1804 audit(1674130102.159:25): pid=11120 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir2034502813/syzkaller.2FLhNC/42/file0" dev="sda1" ino=14070 res=1 audit: type=1804 audit(1674130102.199:26): pid=11125 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir2870731314/syzkaller.EW2lB1/44/file0" dev="sda1" ino=14059 res=1 audit: type=1804 audit(1674130102.229:27): pid=11131 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir2034502813/syzkaller.2FLhNC/43/file0" dev="sda1" ino=14069 res=1 audit: type=1804 audit(1674130102.229:28): pid=11130 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir2472095026/syzkaller.ziXUOw/41/file0" dev="sda1" ino=14068 res=1 audit: type=1804 audit(1674130102.239:29): pid=11137 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir2870731314/syzkaller.EW2lB1/45/file0" dev="sda1" ino=14080 res=1 audit: type=1804 audit(1674130102.349:30): pid=11157 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir2472095026/syzkaller.ziXUOw/42/file0" dev="sda1" ino=14068 res=1 Y4`Ҙ: renamed from lo Y4`Ҙ: renamed from lo Y4`Ҙ: renamed from lo FAT-fs (loop0): mounting with "discard" option, but the device does not support discard audit: type=1804 audit(1674130107.749:31): pid=11475 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1858993660/syzkaller.aZYeIs/59/file0/bus" dev="loop0" ino=4 res=1 FAT-fs (loop0): mounting with "discard" option, but the device does not support discard audit: type=1804 audit(1674130107.939:32): pid=11506 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1858993660/syzkaller.aZYeIs/60/file0/bus" dev="loop0" ino=5 res=1 unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 FAT-fs (loop0): mounting with "discard" option, but the device does not support discard audit: type=1804 audit(1674130108.299:33): pid=11515 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1858993660/syzkaller.aZYeIs/61/file0/bus" dev="loop0" ino=6 res=1 FAT-fs (loop0): mounting with "discard" option, but the device does not support discard audit: type=1804 audit(1674130108.859:34): pid=11558 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1858993660/syzkaller.aZYeIs/62/file0/bus" dev="loop0" ino=7 res=1