UDF-fs: warning (device loop1): udf_fill_super: No fileset found
======================================================
WARNING: possible circular locking dependency detected
4.19.211-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.3/14535 is trying to acquire lock:
00000000e4ffe9f5 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline]
00000000e4ffe9f5 (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360

but task is already holding lock:
0000000075a77830 (&iint->mutex){+.+.}, at: process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&iint->mutex){+.+.}:
       process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224
       ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391
       do_last fs/namei.c:3425 [inline]
       path_openat+0x7e4/0x2df0 fs/namei.c:3537
       do_filp_open+0x18c/0x3f0 fs/namei.c:3567
       do_sys_open+0x3b3/0x520 fs/open.c:1085
       do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #0 (sb_writers#3){.+.+}:
       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+0x3a/0xb0 fs/namespace.c:360
       ovl_maybe_copy_up+0x11f/0x190 fs/overlayfs/copy_up.c:888
       ovl_open+0xb4/0x260 fs/overlayfs/file.c:126
       do_dentry_open+0x4aa/0x1160 fs/open.c:796
       vfs_open fs/open.c:902 [inline]
       dentry_open+0x132/0x1d0 fs/open.c:918
       ima_calc_file_hash+0x628/0x8a0 security/integrity/ima/ima_crypto.c:435
       ima_collect_measurement+0x4c4/0x570 security/integrity/ima/ima_api.c:231
       process_measurement+0xddd/0x1440 security/integrity/ima/ima_main.c:284
       ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391
       do_last fs/namei.c:3425 [inline]
       path_openat+0x7e4/0x2df0 fs/namei.c:3537
       do_filp_open+0x18c/0x3f0 fs/namei.c:3567
       do_sys_open+0x3b3/0x520 fs/open.c:1085
       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:

REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal
 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&iint->mutex);
                               lock(sb_writers#3);
                               lock(&iint->mutex);
  lock(sb_writers#3);
REISERFS (device loop2): using writeback data mode

 *** DEADLOCK ***

1 lock held by syz-executor.3/14535:
 #0: 0000000075a77830 (&iint->mutex){+.+.}, at: process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224

stack backtrace:
CPU: 1 PID: 14535 Comm: syz-executor.3 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
reiserfs: using flush barriers
 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+0x3a/0xb0 fs/namespace.c:360
 ovl_maybe_copy_up+0x11f/0x190 fs/overlayfs/copy_up.c:888
 ovl_open+0xb4/0x260 fs/overlayfs/file.c:126
REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
 do_dentry_open+0x4aa/0x1160 fs/open.c:796
 vfs_open fs/open.c:902 [inline]
 dentry_open+0x132/0x1d0 fs/open.c:918
 ima_calc_file_hash+0x628/0x8a0 security/integrity/ima/ima_crypto.c:435
 ima_collect_measurement+0x4c4/0x570 security/integrity/ima/ima_api.c:231
 process_measurement+0xddd/0x1440 security/integrity/ima/ima_main.c:284
REISERFS (device loop2): checking transaction log (loop2)
 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391
 do_last fs/namei.c:3425 [inline]
 path_openat+0x7e4/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f46cc4260d9
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:00007f46ca998168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f46cc545f80 RCX: 00007f46cc4260d9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000020000040
RBP: 00007f46cc481ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc275570bf R14: 00007f46ca998300 R15: 0000000000022000
UDF-fs: warning (device loop1): udf_fill_super: No fileset found
BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop4
REISERFS (device loop2): Using r5 hash to sort names
REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.
BTRFS info (device loop4): unrecognized mount option 'ref_verify'
BTRFS error (device loop4): open_ctree failed
audit: type=1800 audit(1671623714.269:41250): pid=14528 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="loop2" ino=4 res=0
audit: type=1800 audit(1671623714.449:41251): pid=14529 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="file1" dev="sda1" ino=13906 res=0
REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop2): using writeback data mode
reiserfs: using flush barriers
REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop2): checking transaction log (loop2)
REISERFS (device loop2): Using r5 hash to sort names
REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.
audit: type=1800 audit(1671623714.999:41252): pid=14588 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="loop2" ino=4 res=0
BTRFS info (device loop4): unrecognized mount option 'ref_verify'
BTRFS error (device loop4): open_ctree failed
audit: type=1800 audit(1671623715.279:41253): pid=14603 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="file1" dev="sda1" ino=13959 res=0
F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): Found nat_bits in checkpoint
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
audit: type=1800 audit(1671623715.739:41254): pid=14567 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="loop0" ino=5 res=0
audit: type=1800 audit(1671623715.809:41255): pid=14635 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="loop0" ino=5 res=0
BTRFS: device fsid 11f48b31-c56c-4ac8-b2ac-117247207a11 devid 1 transid 8 /dev/loop5
BTRFS info (device loop5): force clearing of disk cache
BTRFS info (device loop5): enabling ssd optimizations
BTRFS info (device loop5): using spread ssd allocation scheme
BTRFS info (device loop5): enabling inode map caching
BTRFS info (device loop5): unrecognized mount option 'ref_verify'
BTRFS error (device loop5): open_ctree failed
REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop2): using writeback data mode
reiserfs: using flush barriers
REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
9pnet: Could not find request transport: t0000000����(6}�u�8Q��
REISERFS (device loop2): checking transaction log (loop2)
BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop3
REISERFS (device loop2): Using r5 hash to sort names
REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.
BTRFS error (device loop3): unsupported checksum algorithm 2
audit: type=1800 audit(1671623717.119:41256): pid=14661 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="loop2" ino=4 res=0
BTRFS error (device loop3): superblock checksum mismatch
BTRFS error (device loop3): open_ctree failed
audit: type=1800 audit(1671623717.299:41257): pid=14657 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14492 res=0
BTRFS info (device loop4): unrecognized mount option 'ref_verify'
audit: type=1800 audit(1671623717.309:41258): pid=14657 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14492 res=0
BTRFS error (device loop4): open_ctree failed
REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop2): using writeback data mode
reiserfs: using flush barriers
REISERFS (device loop2): journal params: device loop2, 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(1671623717.689:41259): pid=14660 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="file1" dev="sda1" ino=14497 res=0
REISERFS (device loop2): checking transaction log (loop2)
REISERFS (device loop2): Using r5 hash to sort names
REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.
BTRFS error (device loop1): unsupported checksum algorithm 2
BTRFS error (device loop1): superblock checksum mismatch
BTRFS warning (device <unknown>): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor.3 (14706)
BTRFS error (device loop1): open_ctree failed
BTRFS info (device loop4): unrecognized mount option 'ref_verify'
BTRFS error (device loop4): open_ctree failed
F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): Found nat_bits in checkpoint
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
F2FS-fs (loop5): invalid crc value
F2FS-fs (loop5): Found nat_bits in checkpoint
F2FS-fs (loop5): Mounted with checkpoint version = 48b305e4
Unknown ioctl -805268418
BTRFS warning (device <unknown>): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor.1 (14777)
BTRFS error (device loop3): unsupported checksum algorithm 2
BTRFS error (device loop3): superblock checksum mismatch
kauditd_printk_skb: 10 callbacks suppressed
audit: type=1800 audit(1671623719.719:41270): pid=14777 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14506 res=0
BTRFS error (device loop3): open_ctree failed
audit: type=1800 audit(1671623719.769:41271): pid=14777 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14506 res=0
audit: type=1800 audit(1671623719.969:41272): pid=14778 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14523 res=0
audit: type=1800 audit(1671623719.969:41273): pid=14778 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14523 res=0
F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): Found nat_bits in checkpoint
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
audit: type=1800 audit(1671623720.839:41274): pid=14807 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="loop0" ino=5 res=0
F2FS-fs (loop5): invalid crc value
F2FS-fs (loop5): Found nat_bits in checkpoint
audit: type=1800 audit(1671623720.949:41275): pid=14807 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="loop0" ino=5 res=0
F2FS-fs (loop5): Mounted with checkpoint version = 48b305e4
audit: type=1800 audit(1671623721.019:41276): pid=14822 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="loop5" ino=5 res=0
audit: type=1800 audit(1671623721.099:41277): pid=14845 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="loop5" ino=5 res=0
BTRFS error (device loop3): unsupported checksum algorithm 2
BTRFS error (device loop3): superblock checksum mismatch
BTRFS warning (device <unknown>): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor.1 (14857)
BTRFS error (device loop3): open_ctree failed
audit: type=1800 audit(1671623721.790:41278): pid=14857 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14405 res=0
audit: type=1800 audit(1671623721.790:41279): pid=14857 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14405 res=0
F2FS-fs (loop5): invalid crc value
F2FS-fs (loop5): Found nat_bits in checkpoint
F2FS-fs (loop5): Mounted with checkpoint version = 48b305e4
F2FS-fs (loop0): invalid crc value