(syz.0.0,5334,0):ocfs2_extend_trans:438 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_insert_path:4189 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_do_insert_extent:4345 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_insert_extent:4767 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_add_clusters_in_btree:4860 ERROR: status = -30 (syz.0.0,5334,0):__ocfs2_journal_access:705 ERROR: Error -30 getting 2 access to buffer! (syz.0.0,5334,0):ocfs2_block_group_clear_bits:2465 ERROR: status = -30 (syz.0.0,5334,0):_ocfs2_free_suballoc_bits:2566 ERROR: status = -30 (syz.0.0,5334,0):_ocfs2_free_clusters:2650 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_write_cluster:1131 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_write_cluster_by_desc:1225 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_write_begin_nolock:1798 ERROR: status = -30 ============================================ WARNING: possible recursive locking detected 6.15.0-rc1-syzkaller-00173-g0c7cae12f67c #0 Not tainted -------------------------------------------- syz.0.0/5334 is trying to acquire lock: ffff88801bb6e610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_dquot fs/ocfs2/quota_global.c:679 [inline] ffff88801bb6e610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_mark_dquot_dirty+0x416/0xe00 fs/ocfs2/quota_global.c:954 but task is already holding lock: ffff88801bb6e610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x2e11/0x4e80 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.0.0/5334: #0: ffff88801228ab78 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x310 fs/file.c:1213 #1: ffff88801bb6e420 (sb_writers#12){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3041 [inline] #1: ffff88801bb6e420 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x23f/0xd10 fs/read_write.c:680 #2: ffff8880451ba640 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #2: ffff8880451ba640 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x43c/0x20d0 fs/ocfs2/file.c:2399 #3: ffff8880451ba2e0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x1d3/0x3a0 fs/ocfs2/aops.c:1880 #4: ffff888045199800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #4: ffff888045199800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x18d/0x4f30 fs/ocfs2/suballoc.c:786 #5: ffff888045195100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #5: ffff888045195100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x18d/0x4f30 fs/ocfs2/suballoc.c:786 #6: ffff88801bb6e610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x2e11/0x4e80 fs/ocfs2/aops.c:1748 #7: ffff88804279f4e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3c2/0x710 fs/ocfs2/journal.c:350 #8: ffffffff8eebcd30 (dquot_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline] #8: ffffffff8eebcd30 (dquot_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline] #8: ffffffff8eebcd30 (dquot_srcu){.+.+}-{0:0}, at: __dquot_free_space+0x1f5/0xec0 fs/quota/dquot.c:1901 stack backtrace: CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted 6.15.0-rc1-syzkaller-00173-g0c7cae12f67c #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_deadlock_bug+0x2be/0x2d0 kernel/locking/lockdep.c:3042 check_deadlock kernel/locking/lockdep.c:3094 [inline] validate_chain+0x928/0x24e0 kernel/locking/lockdep.c:3896 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 percpu_down_read include/linux/percpu-rwsem.h:52 [inline] __sb_start_write include/linux/fs.h:1783 [inline] sb_start_intwrite include/linux/fs.h:1966 [inline] ocfs2_start_trans+0x2bd/0x710 fs/ocfs2/journal.c:348 ocfs2_write_dquot fs/ocfs2/quota_global.c:679 [inline] ocfs2_mark_dquot_dirty+0x416/0xe00 fs/ocfs2/quota_global.c:954 mark_dquot_dirty fs/quota/dquot.c:370 [inline] mark_all_dquot_dirty+0x101/0x450 fs/quota/dquot.c:410 __dquot_free_space+0x97f/0xec0 fs/quota/dquot.c:1928 dquot_free_space_nodirty include/linux/quotaops.h:374 [inline] dquot_free_space+0x1b/0x30 include/linux/quotaops.h:379 ocfs2_write_begin_nolock+0x35e7/0x4e80 fs/ocfs2/aops.c:1814 ocfs2_write_begin+0x207/0x3a0 fs/ocfs2/aops.c:1882 generic_perform_write+0x329/0xa10 mm/filemap.c:4102 ocfs2_file_write_iter+0x190f/0x20d0 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x70f/0xd10 fs/read_write.c:684 ksys_write+0x19d/0x2d0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f47e2d8d169 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f47e3c77038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f47e2fa6160 RCX: 00007f47e2d8d169 RDX: 000000000208e24b RSI: 0000200000000000 RDI: 000000000000000a RBP: 00007f47e2e0e990 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f47e2fa6160 R15: 00007ffd85612528 (syz.0.0,5334,0):ocfs2_start_trans:357 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.0.0,5334,0):ocfs2_write_dquot:682 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_mark_dquot_dirty:983 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_start_trans:357 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.0.0,5334,0):ocfs2_write_dquot:682 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_mark_dquot_dirty:983 ERROR: status = -30 (syz.0.0,5334,0):ocfs2_write_begin:1885 ERROR: status = -30