(syz.0.0,5330,0):ocfs2_extend_trans:457 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_insert_path:4189 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_do_insert_extent:4345 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_insert_extent:4767 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_add_clusters_in_btree:4860 ERROR: status = -30 (syz.0.0,5330,0):__ocfs2_journal_access:724 ERROR: Error -30 getting 2 access to buffer! (syz.0.0,5330,0):ocfs2_block_group_clear_bits:2585 ERROR: status = -30 (syz.0.0,5330,0):_ocfs2_free_suballoc_bits:2879 ERROR: status = -30 (syz.0.0,5330,0):_ocfs2_free_clusters:2977 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_write_cluster:1132 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_write_cluster_by_desc:1226 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_write_begin_nolock:1798 ERROR: status = -30 ============================================ WARNING: possible recursive locking detected syzkaller #0 Not tainted -------------------------------------------- syz.0.0/5330 is trying to acquire lock: ffff888012b54610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_dquot fs/ocfs2/quota_global.c:679 [inline] ffff888012b54610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_mark_dquot_dirty+0x3dc/0xdd0 fs/ocfs2/quota_global.c:954 but task is already holding lock: ffff888012b54610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x279c/0x41e0 fs/ocfs2/aops.c:1748 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(sb_internal#2); lock(sb_internal#2); *** DEADLOCK *** May be due to missing lock nesting notation 9 locks held by syz.0.0/5330: #0: ffff88803760eef8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x246/0x320 fs/file.c:1261 #1: ffff888012b54420 (sb_writers#12){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2710 [inline] #1: ffff888012b54420 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x227/0xb90 fs/read_write.c:684 #2: ffff888047709800 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #2: ffff888047709800 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x429/0x1ed0 fs/ocfs2/file.c:2406 #3: ffff8880477094a0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_dio_wr_get_block+0x91c/0x1800 fs/ocfs2/aops.c:2199 #4: ffff888011f8a640 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #4: ffff888011f8a640 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16a/0x4940 fs/ocfs2/suballoc.c:857 #5: ffff888011f8df40 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #5: ffff888011f8df40 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x16a/0x4940 fs/ocfs2/suballoc.c:857 #6: ffff888012b54610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x279c/0x41e0 fs/ocfs2/aops.c:1748 #7: ffff8880345ae4e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3ab/0x700 fs/ocfs2/journal.c:369 #8: ffffffff8e9128f8 (dquot_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline] #8: ffffffff8e9128f8 (dquot_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:294 [inline] #8: ffffffff8e9128f8 (dquot_srcu){.+.+}-{0:0}, at: __dquot_free_space+0x18e/0xc00 fs/quota/dquot.c:1904 stack backtrace: CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_deadlock_bug+0x279/0x290 kernel/locking/lockdep.c:3041 check_deadlock kernel/locking/lockdep.c:3093 [inline] validate_chain kernel/locking/lockdep.c:3895 [inline] __lock_acquire+0x253f/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs/super.h:19 [inline] sb_start_intwrite include/linux/fs/super.h:177 [inline] ocfs2_start_trans+0x2ac/0x700 fs/ocfs2/journal.c:367 ocfs2_write_dquot fs/ocfs2/quota_global.c:679 [inline] ocfs2_mark_dquot_dirty+0x3dc/0xdd0 fs/ocfs2/quota_global.c:954 mark_dquot_dirty fs/quota/dquot.c:373 [inline] mark_all_dquot_dirty+0x101/0x460 fs/quota/dquot.c:413 __dquot_free_space+0x80b/0xc00 fs/quota/dquot.c:1931 dquot_free_space_nodirty include/linux/quotaops.h:374 [inline] dquot_free_space+0x1b/0x30 include/linux/quotaops.h:379 ocfs2_write_begin_nolock+0x2f1a/0x41e0 fs/ocfs2/aops.c:1814 ocfs2_dio_wr_get_block+0xbbf/0x1800 fs/ocfs2/aops.c:2213 get_more_blocks fs/direct-io.c:648 [inline] do_direct_IO fs/direct-io.c:936 [inline] __blockdev_direct_IO+0x15d7/0x32f0 fs/direct-io.c:1243 ocfs2_direct_IO+0x251/0x2c0 fs/ocfs2/aops.c:2440 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4253 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4422 ocfs2_file_write_iter+0x1663/0x1ed0 fs/ocfs2/file.c:2476 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f50ac99c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f50ad8b2fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f50acc16090 RCX: 00007f50ac99c799 RDX: 00000000ffffffd7 RSI: 0000200000000000 RDI: 0000000000000007 RBP: 00007f50aca32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f50acc16128 R14: 00007f50acc16090 R15: 00007ffd22d96168 (syz.0.0,5330,0):ocfs2_start_trans:376 ERROR: status = -30 OCFS2: abort (device loop0): handle_t *ocfs2_start_trans(struct ocfs2_super *, int): Detected aborted journal On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: Returning error to the calling process. (syz.0.0,5330,0):ocfs2_write_dquot:682 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_mark_dquot_dirty:983 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_start_trans:376 ERROR: status = -30 OCFS2: abort (device loop0): handle_t *ocfs2_start_trans(struct ocfs2_super *, int): Detected aborted journal On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: Returning error to the calling process. (syz.0.0,5330,0):ocfs2_write_dquot:682 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_mark_dquot_dirty:983 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_dio_wr_get_block:2217 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_dio_end_io:2400 ERROR: Direct IO failed, bytes = -30