erofs: cannot find valid erofs superblock overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: unrecognized mount option "obj_role=[(" or missing value gfs2: gfs2 mount does not exist ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.2/9627 is trying to acquire lock: 0000000062d8041e (&ovl_i_mutex_dir_key[depth]#2){++++}, at: inode_lock_shared include/linux/fs.h:758 [inline] 0000000062d8041e (&ovl_i_mutex_dir_key[depth]#2){++++}, at: lookup_slow fs/namei.c:1688 [inline] 0000000062d8041e (&ovl_i_mutex_dir_key[depth]#2){++++}, at: walk_component+0x798/0xda0 fs/namei.c:1811 but task is already holding lock: 00000000956b5feb (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1419 [inline] 00000000956b5feb (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file+0x38c/0x2360 fs/exec.c:1762 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&sig->cred_guard_mutex){+.+.}: do_io_accounting fs/proc/base.c:2750 [inline] proc_tgid_io_accounting+0x1cf/0x7f0 fs/proc/base.c:2799 proc_single_show+0xeb/0x170 fs/proc/base.c:755 seq_read+0x4e0/0x11c0 fs/seq_file.c:232 __vfs_read+0xf7/0x750 fs/read_write.c:416 vfs_read+0x194/0x3c0 fs/read_write.c:452 ksys_read+0x12b/0x2a0 fs/read_write.c:579 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #3 (&p->lock){+.+.}: seq_read+0x6b/0x11c0 fs/seq_file.c:164 proc_reg_read+0x1bd/0x2d0 fs/proc/inode.c:231 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x457/0xa00 fs/splice.c:417 do_splice_to+0x10e/0x160 fs/splice.c:881 splice_direct_to_actor+0x2b9/0x8d0 fs/splice.c:959 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (sb_writers#3){.+.+}: sb_start_write include/linux/fs.h:1579 [inline] mnt_want_write+0x3a/0xb0 fs/namespace.c:360 ovl_xattr_set+0x53/0x600 fs/overlayfs/inode.c:338 __vfs_setxattr+0x10e/0x170 fs/xattr.c:149 __vfs_setxattr_noperm+0x11a/0x420 fs/xattr.c:180 __vfs_setxattr_locked+0x176/0x250 fs/xattr.c:238 vfs_setxattr+0xe5/0x270 fs/xattr.c:255 setxattr+0x23d/0x330 fs/xattr.c:520 path_setxattr+0x170/0x190 fs/xattr.c:539 __do_sys_lsetxattr fs/xattr.c:561 [inline] __se_sys_lsetxattr fs/xattr.c:557 [inline] __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:557 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&ovl_i_mutex_dir_key[depth]){++++}: inode_lock_shared include/linux/fs.h:758 [inline] lookup_slow fs/namei.c:1688 [inline] lookup_one_len_unlocked+0x111/0x140 fs/namei.c:2573 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 lookup_slow fs/namei.c:1689 [inline] walk_component+0x7ac/0xda0 fs/namei.c:1811 link_path_walk.part.0+0x901/0x1230 fs/namei.c:2142 link_path_walk fs/namei.c:2270 [inline] path_lookupat+0xe4/0x8d0 fs/namei.c:2318 filename_lookup+0x1ac/0x5a0 fs/namei.c:2349 user_path_at include/linux/namei.h:57 [inline] do_sys_truncate fs/open.c:130 [inline] do_sys_truncate+0xa0/0x170 fs/open.c:120 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&ovl_i_mutex_dir_key[depth]#2){++++}: down_read+0x36/0x80 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:758 [inline] lookup_slow fs/namei.c:1688 [inline] walk_component+0x798/0xda0 fs/namei.c:1811 link_path_walk.part.0+0x901/0x1230 fs/namei.c:2142 link_path_walk fs/namei.c:2073 [inline] path_openat+0x1db/0x2df0 fs/namei.c:3536 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_open_execat+0x11d/0x5b0 fs/exec.c:853 __do_execve_file+0x1a8b/0x2360 fs/exec.c:1770 do_execveat_common fs/exec.c:1879 [inline] do_execve+0x35/0x50 fs/exec.c:1896 __do_sys_execve fs/exec.c:1977 [inline] __se_sys_execve fs/exec.c:1972 [inline] __x64_sys_execve+0x7c/0xa0 fs/exec.c:1972 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: &ovl_i_mutex_dir_key[depth]#2 --> &p->lock --> &sig->cred_guard_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sig->cred_guard_mutex); lock(&p->lock); lock(&sig->cred_guard_mutex); lock(&ovl_i_mutex_dir_key[depth]#2); *** DEADLOCK *** 1 lock held by syz-executor.2/9627: #0: 00000000956b5feb (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1419 [inline] #0: 00000000956b5feb (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file+0x38c/0x2360 fs/exec.c:1762 stack backtrace: CPU: 0 PID: 9627 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 down_read+0x36/0x80 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:758 [inline] lookup_slow fs/namei.c:1688 [inline] walk_component+0x798/0xda0 fs/namei.c:1811 link_path_walk.part.0+0x901/0x1230 fs/namei.c:2142 link_path_walk fs/namei.c:2073 [inline] path_openat+0x1db/0x2df0 fs/namei.c:3536 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_open_execat+0x11d/0x5b0 fs/exec.c:853 __do_execve_file+0x1a8b/0x2360 fs/exec.c:1770 do_execveat_common fs/exec.c:1879 [inline] do_execve+0x35/0x50 fs/exec.c:1896 __do_sys_execve fs/exec.c:1977 [inline] __se_sys_execve fs/exec.c:1972 [inline] __x64_sys_execve+0x7c/0xa0 fs/exec.c:1972 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd2787aa049 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:00007fd27711f168 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00007fd2788bcf60 RCX: 00007fd2787aa049 RDX: 0000000020000f00 RSI: 0000000020000ec0 RDI: 0000000020000a40 RBP: 00007fd27880408d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe59622f0f R14: 00007fd27711f300 R15: 0000000000022000 IPVS: ftp: loaded support on port[0] = 21 REISERFS warning (device loop5): super-6502 reiserfs_getopt: unknown mount option "" IPVS: ftp: loaded support on port[0] = 21 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: unrecognized mount option "obj_role=[(" or missing value gfs2: gfs2 mount does not exist overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: unrecognized mount option "obj_role=[(" or missing value REISERFS warning (device loop5): super-6502 reiserfs_getopt: unknown mount option "" gfs2: gfs2 mount does not exist overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: unrecognized mount option "obj_role=[(" or missing value gfs2: gfs2 mount does not exist device bond0 entered promiscuous mode device bond_slave_0 entered promiscuous mode EXT4-fs warning (device loop5): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. device bond_slave_1 entered promiscuous mode EXT4-fs (loop5): mount failed EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue kauditd_printk_skb: 6995 callbacks suppressed audit: type=1804 audit(1646726235.482:26764): pid=9910 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/822/bus" dev="sda1" ino=13988 res=1 jfs: Unrecognized mount option "obj_role=jfs" or missing value EXT4-fs warning (device loop5): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop5): mount failed audit: type=1804 audit(1646726235.682:26765): pid=9932 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/822/bus" dev="sda1" ino=13988 res=1 jfs: Unrecognized mount option "obj_role=jfs" or missing value EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue jfs: Unrecognized mount option "obj_role=jfs" or missing value EXT4-fs warning (device loop5): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop5): mount failed jfs: Unrecognized mount option "obj_role=jfs" or missing value EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue audit: type=1804 audit(1646726236.482:26766): pid=10039 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/823/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1646726236.542:26767): pid=10033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/823/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1646726236.542:26768): pid=10033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/823/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1646726236.542:26769): pid=10033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/823/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1646726236.542:26770): pid=10033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/823/bus" dev="sda1" ino=13956 res=1 audit: type=1804 audit(1646726236.542:26771): pid=10033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/823/bus" dev="sda1" ino=13956 res=1 EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. audit: type=1804 audit(1646726236.542:26772): pid=10033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/823/bus" dev="sda1" ino=13956 res=1 EXT4-fs (loop2): mount failed audit: type=1804 audit(1646726236.542:26773): pid=10033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir387993710/syzkaller.mbpB86/823/bus" dev="sda1" ino=13956 res=1 EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop2): mount failed EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop2): mount failed EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop1): unsupported descriptor size 212 EXT4-fs (loop2): mount failed EXT4-fs (loop1): unsupported descriptor size 212 EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop2): mount failed EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop2): mount failed netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. BTRFS error (device loop4): superblock checksum mismatch device bond1 entered promiscuous mode EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. BTRFS error (device loop4): open_ctree failed EXT4-fs (loop2): mount failed netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. device bond2 entered promiscuous mode BTRFS error (device loop4): superblock checksum mismatch EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. BTRFS error (device loop4): open_ctree failed EXT4-fs (loop2): mount failed netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. device bond3 entered promiscuous mode EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop2): mount failed BTRFS error (device loop4): superblock checksum mismatch BTRFS error (device loop4): open_ctree failed EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=0, err=-22). Please run e2fsck to fix. EXT4-fs (loop2): mount failed RDS: rds_bind could not find a transport for fc01::1, load rds_tcp or rds_rdma? RDS: rds_bind could not find a transport for fc01::1, load rds_tcp or rds_rdma? Left network mode EXT4-fs (loop2): bad geometry: block count 128 exceeds size of device (68 blocks) RDS: rds_bind could not find a transport for fc01::1, load rds_tcp or rds_rdma? EXT4-fs (loop2): bad geometry: block count 128 exceeds size of device (68 blocks) EXT4-fs (loop2): bad geometry: block count 128 exceeds size of device (68 blocks)