loop0: detected capacity change from 0 to 32768 (syz.0.0,5328,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. (syz.0.0,5328,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. (syz.0.0,5328,0):ocfs2_extend_trans:460 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_insert_path:4189 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_do_insert_extent:4345 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_insert_extent:4767 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_add_clusters_in_btree:4860 ERROR: status = -30 (syz.0.0,5328,0):__ocfs2_journal_access:727 ERROR: Error -30 getting 2 access to buffer! (syz.0.0,5328,0):ocfs2_block_group_clear_bits:2491 ERROR: status = -30 (syz.0.0,5328,0):_ocfs2_free_suballoc_bits:2592 ERROR: status = -30 (syz.0.0,5328,0):_ocfs2_free_clusters:2676 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_write_cluster:1131 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_write_cluster_by_desc:1225 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_write_begin_nolock:1798 ERROR: status = -30 ============================================ WARNING: possible recursive locking detected 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0 Not tainted -------------------------------------------- syz.0.0/5328 is trying to acquire lock: ffff888035522618 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_dquot fs/ocfs2/quota_global.c:679 [inline] ffff888035522618 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_mark_dquot_dirty+0x4a3/0xd10 fs/ocfs2/quota_global.c:954 but task is already holding lock: ffff888035522618 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x26ee/0x4340 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.0.0/5328: #0: ffff8880001bf638 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x320 fs/file.c:1217 #1: ffff888035522428 (sb_writers#12){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3096 [inline] #1: ffff888035522428 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x211/0xa90 fs/read_write.c:682 #2: ffff8880455609c0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #2: ffff8880455609c0 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x429/0x1d10 fs/ocfs2/file.c:2399 #3: ffff888045560660 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x198/0x310 fs/ocfs2/aops.c:1880 #4: ffff888042fa1800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #4: ffff888042fa1800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 #5: ffff888042f9d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #5: ffff888042f9d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x4640 fs/ocfs2/suballoc.c:788 #6: ffff888035522618 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x26ee/0x4340 fs/ocfs2/aops.c:1748 #7: ffff88801a0f78e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x36a/0x6d0 fs/ocfs2/journal.c:372 #8: ffffffff8e2bfc50 (dquot_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline] #8: ffffffff8e2bfc50 (dquot_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline] #8: ffffffff8e2bfc50 (dquot_srcu){.+.+}-{0:0}, at: __dquot_free_space+0x18e/0xc00 fs/quota/dquot.c:1901 stack backtrace: CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #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_lvl+0x189/0x250 lib/dump_stack.c:120 print_deadlock_bug+0x28b/0x2a0 kernel/locking/lockdep.c:3044 check_deadlock kernel/locking/lockdep.c:3096 [inline] validate_chain+0x1a3f/0x2140 kernel/locking/lockdep.c:3898 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 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.h:1795 [inline] sb_start_intwrite include/linux/fs.h:1978 [inline] ocfs2_start_trans+0x26b/0x6d0 fs/ocfs2/journal.c:370 ocfs2_write_dquot fs/ocfs2/quota_global.c:679 [inline] ocfs2_mark_dquot_dirty+0x4a3/0xd10 fs/ocfs2/quota_global.c:954 mark_dquot_dirty fs/quota/dquot.c:370 [inline] mark_all_dquot_dirty+0xfe/0x460 fs/quota/dquot.c:410 __dquot_free_space+0x80b/0xc00 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+0x2dd5/0x4340 fs/ocfs2/aops.c:1814 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1882 generic_perform_write+0x2c7/0x910 mm/filemap.c:4112 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x54b/0xa90 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f04fd38e929 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:00007f04fe24b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f04fd5b6080 RCX: 00007f04fd38e929 RDX: 000000000208e24b RSI: 0000200000000240 RDI: 0000000000000006 RBP: 00007f04fd410b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f04fd5b6080 R15: 00007fff0dd64128 (syz.0.0,5328,0):ocfs2_start_trans:379 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.0.0,5328,0):ocfs2_write_dquot:682 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_mark_dquot_dirty:983 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_start_trans:379 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.0.0,5328,0):ocfs2_write_dquot:682 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_mark_dquot_dirty:983 ERROR: status = -30 (syz.0.0,5328,0):ocfs2_write_begin:1885 ERROR: status = -30