tmpfs: Bad value 'local:00:96' for mount option 'mpol' ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. ------------------------------------------------------ syz-executor.4/26157 is trying to acquire lock: 0000000085c3b8ec (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:77 [inline] 0000000085c3b8ec (&pipe->mutex/1){+.+.}, at: pipe_lock+0x63/0x80 fs/pipe.c:85 but task is already holding lock: 00000000df0882c8 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline] 00000000df0882c8 (sb_writers#3){.+.+}, at: do_splice fs/splice.c:1153 [inline] 00000000df0882c8 (sb_writers#3){.+.+}, at: __do_sys_splice fs/splice.c:1428 [inline] 00000000df0882c8 (sb_writers#3){.+.+}, at: __se_sys_splice+0x11de/0x16d0 fs/splice.c:1408 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: libceph: connect [d::]:6789 error -101 -> #2 (sb_writers#3){.+.+}: sb_start_write include/linux/fs.h:1579 [inline] mnt_want_write+0x3a/0xb0 fs/namespace.c:360 libceph: mon0 [d::]:6789 connect error ovl_link+0x73/0x2b0 fs/overlayfs/dir.c:676 vfs_link+0x7e6/0xc80 fs/namei.c:4243 do_linkat+0x52a/0x810 fs/namei.c:4311 __do_sys_link fs/namei.c:4340 [inline] __se_sys_link fs/namei.c:4338 [inline] __x64_sys_link+0x5d/0x80 fs/namei.c:4338 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe ceph: No mds server is up or the cluster is laggy -> #1 (&ovl_i_mutex_key[depth]#2){+.+.}: inode_lock include/linux/fs.h:748 [inline] ovl_write_iter+0x148/0xb40 fs/overlayfs/file.c:270 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 __kernel_write+0x109/0x370 fs/read_write.c:506 libceph: connect [d::]:6789 error -101 write_pipe_buf+0x153/0x1f0 fs/splice.c:798 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x389/0x800 fs/splice.c:627 splice_from_pipe fs/splice.c:662 [inline] default_file_splice_write+0xd8/0x180 fs/splice.c:810 libceph: mon0 [d::]:6789 connect error do_splice_from fs/splice.c:852 [inline] do_splice fs/splice.c:1154 [inline] __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice+0xfe7/0x16d0 fs/splice.c:1408 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&pipe->mutex/1){+.+.}: __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 pipe_lock_nested fs/pipe.c:77 [inline] pipe_lock+0x63/0x80 fs/pipe.c:85 iter_file_splice_write+0x183/0xbb0 fs/splice.c:700 do_splice_from fs/splice.c:852 [inline] do_splice fs/splice.c:1154 [inline] __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice+0xfe7/0x16d0 fs/splice.c:1408 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: &pipe->mutex/1 --> &ovl_i_mutex_key[depth]#2 --> sb_writers#3 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_writers#3); lock(&ovl_i_mutex_key[depth]#2); lock(sb_writers#3); lock(&pipe->mutex/1); *** DEADLOCK *** 1 lock held by syz-executor.4/26157: #0: 00000000df0882c8 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline] #0: 00000000df0882c8 (sb_writers#3){.+.+}, at: do_splice fs/splice.c:1153 [inline] #0: 00000000df0882c8 (sb_writers#3){.+.+}, at: __do_sys_splice fs/splice.c:1428 [inline] #0: 00000000df0882c8 (sb_writers#3){.+.+}, at: __se_sys_splice+0x11de/0x16d0 fs/splice.c:1408 stack backtrace: CPU: 1 PID: 26157 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 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 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 pipe_lock_nested fs/pipe.c:77 [inline] pipe_lock+0x63/0x80 fs/pipe.c:85 iter_file_splice_write+0x183/0xbb0 fs/splice.c:700 do_splice_from fs/splice.c:852 [inline] do_splice fs/splice.c:1154 [inline] __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice+0xfe7/0x16d0 fs/splice.c:1408 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa4160540f9 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:00007fa414584168 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007fa416174120 RCX: 00007fa4160540f9 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fa4160afae9 R08: 000000000004ffe0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff12acfa4f R14: 00007fa414584300 R15: 0000000000022000 libceph: connect [d::]:6789 error -101 libceph: mon0 [d::]:6789 connect error IPVS: ftp: loaded support on port[0] = 21 tmpfs: Bad value 'local:00:96' for mount option 'mpol' audit: type=1800 audit(1677464963.025:2501): pid=26136 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=15268 res=0 libceph: connect [d::]:6789 error -101 libceph: mon0 [d::]:6789 connect error audit: type=1800 audit(1677464963.065:2502): pid=26136 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=15268 res=0 tmpfs: Bad value 'local:00:96' for mount option 'mpol' ceph: No mds server is up or the cluster is laggy tmpfs: Bad value 'local:00:96' for mount option 'mpol' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. IPVS: ftp: loaded support on port[0] = 21 libceph: connect [d::]:6789 error -101 libceph: mon0 [d::]:6789 connect error ceph: No mds server is up or the cluster is laggy libceph: connect [d::]:6789 error -101 libceph: mon0 [d::]:6789 connect error tmpfs: Bad value 'local:00:96' for mount option 'mpol' libceph: connect [d::]:6789 error -101 libceph: mon0 [d::]:6789 connect error tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' audit: type=1800 audit(1677464963.835:2503): pid=26246 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14449 res=0 audit: type=1800 audit(1677464963.865:2504): pid=26246 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14449 res=0 tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' ceph: No mds server is up or the cluster is laggy IPVS: ftp: loaded support on port[0] = 21 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' audit: type=1800 audit(1677464964.625:2505): pid=26347 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=15268 res=0 tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' audit: type=1800 audit(1677464964.655:2506): pid=26347 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=15268 res=0 tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1800 audit(1677464965.575:2507): pid=26420 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14947 res=0 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. audit: type=1800 audit(1677464965.575:2508): pid=26420 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14947 res=0 tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' device lo entered promiscuous mode tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' Y4`Ҙ: renamed from lo tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. kauditd_printk_skb: 2 callbacks suppressed audit: type=1800 audit(1677464967.085:2511): pid=26524 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14254 res=0 audit: type=1800 audit(1677464967.115:2512): pid=26524 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14254 res=0 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.4'. audit: type=1800 audit(1677464967.786:2513): pid=26590 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14237 res=0 audit: type=1800 audit(1677464967.816:2514): pid=26590 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14237 res=0 audit: type=1800 audit(1677464968.616:2515): pid=26637 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14254 res=0 audit: type=1800 audit(1677464968.646:2516): pid=26637 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14254 res=0 audit: type=1800 audit(1677464969.336:2517): pid=26680 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14282 res=0 audit: type=1800 audit(1677464969.366:2518): pid=26680 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14282 res=0 nla_parse: 15 callbacks suppressed netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. audit: type=1800 audit(1677464970.196:2519): pid=26726 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14272 res=0 audit: type=1800 audit(1677464970.226:2520): pid=26726 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14272 res=0 tmpfs: Bad value 'witF ' for mount option 'huge' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. tmpfs: Bad value 'witF ' for mount option 'huge' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. tmpfs: Bad value 'witF ' for mount option 'huge' netlink: 28 bytes leftover after parsing attributes in process `syz-executor.4'. tmpfs: Bad value 'local:00:96' for mount option 'mpol' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. tmpfs: Bad value 'local:00:96' for mount option 'mpol' tmpfs: Bad value 'local:00:96' for mount option 'mpol'