ntfs: (device loop1): ntfs_nlstoucs(): Name is too long (maximum length for a name on NTFS is 255 Unicode characters. NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) ====================================================== WARNING: possible circular locking dependency detected 4.14.295-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/10448 is trying to acquire lock: (&nilfs->ns_sem){++++}, at: [] nilfs_set_error fs/nilfs2/super.c:95 [inline] (&nilfs->ns_sem){++++}, at: [] __nilfs_error+0x176/0x399 fs/nilfs2/super.c:140 but task is already holding lock: (&dat_lock_key){.+.+}, at: [] nilfs_get_block+0x17e/0x7a0 fs/nilfs2/inode.c:88 which lock already depends on the new lock. netlink: 104 bytes leftover after parsing attributes in process `syz-executor.0'. the existing dependency chain (in reverse order) is: -> #1 (&dat_lock_key){.+.+}: down_read+0x36/0x80 kernel/locking/rwsem.c:24 nilfs_count_free_blocks+0x68/0x180 fs/nilfs2/the_nilfs.c:707 nilfs_set_log_cursor fs/nilfs2/super.c:247 [inline] nilfs_cleanup_super+0x123/0x450 fs/nilfs2/super.c:329 nilfs_put_super+0x141/0x190 fs/nilfs2/super.c:483 generic_shutdown_super+0x144/0x370 fs/super.c:446 kill_block_super+0x95/0xe0 fs/super.c:1161 deactivate_locked_super+0x6c/0xd0 fs/super.c:319 deactivate_super+0x7f/0xa0 fs/super.c:350 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #0 (&nilfs->ns_sem){++++}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 down_write+0x34/0x90 kernel/locking/rwsem.c:54 nilfs_set_error fs/nilfs2/super.c:95 [inline] __nilfs_error+0x176/0x399 fs/nilfs2/super.c:140 nilfs_bmap_convert_error fs/nilfs2/bmap.c:44 [inline] nilfs_bmap_lookup_contig+0x130/0x170 fs/nilfs2/bmap.c:104 nilfs_get_block+0x1bd/0x7a0 fs/nilfs2/inode.c:89 do_mpage_readpage+0x615/0x1470 fs/mpage.c:211 mpage_readpages+0x2d6/0x5f0 fs/mpage.c:383 read_pages mm/readahead.c:121 [inline] __do_page_cache_readahead+0x522/0x940 mm/readahead.c:199 ra_submit mm/internal.h:66 [inline] ondemand_readahead.isra.0+0x514/0xb60 mm/readahead.c:486 page_cache_sync_readahead mm/readahead.c:518 [inline] page_cache_sync_readahead+0xa6/0xf0 mm/readahead.c:503 generic_file_buffered_read mm/filemap.c:2003 [inline] generic_file_read_iter+0xfbc/0x21c0 mm/filemap.c:2273 call_read_iter include/linux/fs.h:1774 [inline] new_sync_read fs/read_write.c:401 [inline] __vfs_read+0x449/0x620 fs/read_write.c:413 integrity_kernel_read+0x11b/0x1b0 security/integrity/iint.c:199 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:381 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:410 [inline] ima_calc_file_hash+0x3ee/0x780 security/integrity/ima/ima_crypto.c:467 ima_collect_measurement+0x39d/0x430 security/integrity/ima/ima_api.c:227 process_measurement+0x78b/0xb20 security/integrity/ima/ima_main.c:264 do_last fs/namei.c:3435 [inline] path_openat+0x10ad/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+0x46/0xbb other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&dat_lock_key); lock(&nilfs->ns_sem); lock(&dat_lock_key); lock(&nilfs->ns_sem); *** DEADLOCK *** 2 locks held by syz-executor.3/10448: #0: (&iint->mutex){+.+.}, at: [] process_measurement+0x270/0xb20 security/integrity/ima/ima_main.c:225 #1: (&dat_lock_key){.+.+}, at: [] nilfs_get_block+0x17e/0x7a0 fs/nilfs2/inode.c:88 stack backtrace: CPU: 0 PID: 10448 Comm: syz-executor.3 Not tainted 4.14.295-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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 down_write+0x34/0x90 kernel/locking/rwsem.c:54 nilfs_set_error fs/nilfs2/super.c:95 [inline] __nilfs_error+0x176/0x399 fs/nilfs2/super.c:140 nilfs_bmap_convert_error fs/nilfs2/bmap.c:44 [inline] nilfs_bmap_lookup_contig+0x130/0x170 fs/nilfs2/bmap.c:104 nilfs_get_block+0x1bd/0x7a0 fs/nilfs2/inode.c:89 do_mpage_readpage+0x615/0x1470 fs/mpage.c:211 mpage_readpages+0x2d6/0x5f0 fs/mpage.c:383 read_pages mm/readahead.c:121 [inline] __do_page_cache_readahead+0x522/0x940 mm/readahead.c:199 ra_submit mm/internal.h:66 [inline] ondemand_readahead.isra.0+0x514/0xb60 mm/readahead.c:486 page_cache_sync_readahead mm/readahead.c:518 [inline] page_cache_sync_readahead+0xa6/0xf0 mm/readahead.c:503 generic_file_buffered_read mm/filemap.c:2003 [inline] generic_file_read_iter+0xfbc/0x21c0 mm/filemap.c:2273 call_read_iter include/linux/fs.h:1774 [inline] new_sync_read fs/read_write.c:401 [inline] __vfs_read+0x449/0x620 fs/read_write.c:413 integrity_kernel_read+0x11b/0x1b0 security/integrity/iint.c:199 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:381 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:410 [inline] ima_calc_file_hash+0x3ee/0x780 security/integrity/ima/ima_crypto.c:467 ima_collect_measurement+0x39d/0x430 security/integrity/ima/ima_api.c:227 process_measurement+0x78b/0xb20 security/integrity/ima/ima_main.c:264 do_last fs/namei.c:3435 [inline] path_openat+0x10ad/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+0x46/0xbb RIP: 0033:0x7ffaa4f325f9 RSP: 002b:00007ffaa38a5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffaa5052f80 RCX: 00007ffaa4f325f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007ffaa4f8d7b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc7933cdf R14: 00007ffaa38a5300 R15: 0000000000022000 uinput: write device info first Remounting filesystem read-only NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 print_req_error: I/O error, dev loop1, sector 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) MTD: Attempt to mount non-MTD device "/dev/loop1" romfs: Mounting image 'rom 631f1f75' through the block layer uinput: write device info first NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) NILFS (loop3): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 NILFS error (device loop3): nilfs_bmap_lookup_contig: broken bmap (inode number=16) audit: type=1800 audit(1666616346.352:37): pid=10448 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.3" name="file2" dev="loop3" ino=16 res=0 MTD: Attempt to mount non-MTD device "/dev/loop1" romfs: Mounting image 'rom 631f1f75' through the block layer NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds MTD: Attempt to mount non-MTD device "/dev/loop1" NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds romfs: Mounting image 'rom 631f1f75' through the block layer MTD: Attempt to mount non-MTD device "/dev/loop1" romfs: Mounting image 'rom 631f1f75' through the block layer ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. ntfs: volume version 3.1. unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 ntfs: volume version 3.1. ntfs: volume version 3.1.