REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.5/5545 is trying to acquire lock: 0000000087175157 (sb_writers#31){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] 0000000087175157 (sb_writers#31){.+.+}, at: mnt_want_write_file+0x63/0x1d0 fs/namespace.c:418 but task is already holding lock: 00000000dd745bcf (&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#31){.+.+}: 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#31 --> &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#31); *** DEADLOCK *** 1 lock held by syz-executor.5/5545: #0: 00000000dd745bcf (&sbi->lock){+.+.}, at: reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 stack backtrace: CPU: 0 PID: 5545 Comm: syz-executor.5 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 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: 0033:0x7fb157b260d9 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:00007fb14e077168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb157c46050 RCX: 00007fb157b260d9 RDX: 0000000000000000 RSI: 0000000040087602 RDI: 0000000000000005 RBP: 00007fb157b81ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf595a69f R14: 00007fb14e077300 R15: 0000000000022000 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. EXT4-fs warning (device sda1): ext4_ioctl:814: Setting inode version is not supported with metadata_csum enabled. IPVS: ftp: loaded support on port[0] = 21 overlayfs: unrecognized mount option "*Jõ¬ŒÌ™£Åµ‚]¹HiûÒјœš—NþDAê8²ç[ëFÐîÈC©û5ŸË´Ó葶£’¼ïjÉ× ™@¼÷FÄX4èÑ74m†î¶ »L0Raˆ¹Ù\á9J=}u" or missing value 9pnet_virtio: no channels available for device syz netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. overlayfs: unrecognized mount option "*Jõ¬ŒÌ™£Åµ‚]¹HiûÒјœš—NþDAê8²ç[ëFÐîÈC©û5ŸË´Ó葶£’¼ïjÉ× ™@¼÷FÄX4èÑ74m†î¶ »L0Raˆ¹Ù\á9J=}u" or missing value 9pnet_virtio: no channels available for device syz overlayfs: 'file0' not a directory REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop5): Using r5 hash to sort names REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. overlayfs: unrecognized mount option "*Jõ¬ŒÌ™£Åµ‚]¹HiûÒјœš—NþDAê8²ç[ëFÐîÈC©û5ŸË´Ó葶£’¼ïjÉ× ™@¼÷FÄX4èÑ74m†î¶ »L0Raˆ¹Ù\á9J=}u" or missing value 9pnet_virtio: no channels available for device syz netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. overlayfs: unrecognized mount option "*Jõ¬ŒÌ™£Åµ‚]¹HiûÒјœš—NþDAê8²ç[ëFÐîÈC©û5ŸË´Ó葶£’¼ïjÉ× ™@¼÷FÄX4èÑ74m†î¶ »L0Raˆ¹Ù\á9J=}u" or missing value overlayfs: unrecognized mount option "*Jõ¬ŒÌ™£Åµ‚]¹HiûÒјœš—NþDAê8²ç[ëFÐîÈC©û5ŸË´Ó葶£’¼ïjÉ× ™@¼÷FÄX4èÑ74m†î¶ »L0Raˆ¹Ù\á9J=}u" or missing value netlink: 32 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 32 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 32 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. kauditd_printk_skb: 5 callbacks suppressed audit: type=1800 audit(1669534191.237:308): pid=5727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13911 res=0 audit: type=1804 audit(1669534191.297:309): pid=5835 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir3309023474/syzkaller.ipszCy/164/bus" dev="sda1" ino=13911 res=1 audit: type=1804 audit(1669534191.327:310): pid=5835 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir3309023474/syzkaller.ipszCy/164/bus" dev="sda1" ino=13911 res=1 netlink: 32 bytes leftover after parsing attributes in process `syz-executor.3'. audit: type=1800 audit(1669534192.087:311): pid=5855 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=13885 res=0 audit: type=1804 audit(1669534192.147:312): pid=5920 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir3309023474/syzkaller.ipszCy/165/bus" dev="sda1" ino=13885 res=1 audit: type=1804 audit(1669534192.177:313): pid=5920 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir3309023474/syzkaller.ipszCy/165/bus" dev="sda1" ino=13885 res=1 audit: type=1804 audit(1669534192.207:314): pid=5920 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir3309023474/syzkaller.ipszCy/165/bus" dev="sda1" ino=13885 res=1 audit: type=1804 audit(1669534192.207:315): pid=5855 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir3309023474/syzkaller.ipszCy/165/bus" dev="sda1" ino=13885 res=1 audit: type=1804 audit(1669534192.207:316): pid=5923 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir3309023474/syzkaller.ipszCy/165/bus" dev="sda1" ino=13885 res=1 audit: type=1804 audit(1669534192.207:317): pid=5921 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir3309023474/syzkaller.ipszCy/165/bus" dev="sda1" ino=13885 res=1 nla_parse: 39 callbacks suppressed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 32 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 32 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 32 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. 9pnet: Insufficient options for proto=fd ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd