(syz.0.0,5327,0):ocfs2_extend_trans:438 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_insert_path:4189 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_do_insert_extent:4345 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_insert_extent:4767 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_add_clusters_in_btree:4860 ERROR: status = -30 (syz.0.0,5327,0):__ocfs2_journal_access:705 ERROR: Error -30 getting 2 access to buffer! (syz.0.0,5327,0):ocfs2_block_group_clear_bits:2465 ERROR: status = -30 (syz.0.0,5327,0):_ocfs2_free_suballoc_bits:2566 ERROR: status = -30 (syz.0.0,5327,0):_ocfs2_free_clusters:2650 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_write_cluster:1131 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_write_cluster_by_desc:1225 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_write_begin_nolock:1798 ERROR: status = -30 ============================================ WARNING: possible recursive locking detected 6.15.0-rc2-syzkaller-00400-g3088d26962e8 #0 Not tainted -------------------------------------------- syz.0.0/5327 is trying to acquire lock: ffff88803433a610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_dquot fs/ocfs2/quota_global.c:679 [inline] ffff88803433a610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_mark_dquot_dirty+0x416/0xe00 fs/ocfs2/quota_global.c:954 but task is already holding lock: ffff88803433a610 (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 8 locks held by syz.0.0/5327: #0: ffff888040a8efe0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:203 [inline] #0: ffff888040a8efe0 (&mm->mmap_lock){++++}-{4:4}, at: get_mmap_lock_carefully mm/memory.c:6346 [inline] #0: ffff888040a8efe0 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:6406 #1: ffff88803433a518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x159/0x340 mm/memory.c:3287 #2: ffff8880534a14a0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_page_mkwrite+0x351/0xdb0 fs/ocfs2/mmap.c:142 #3: ffff888053499800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #3: ffff888053499800 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x18d/0x4f30 fs/ocfs2/suballoc.c:786 #4: ffff88805348d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #4: ffff88805348d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x18d/0x4f30 fs/ocfs2/suballoc.c:786 #5: ffff88803433a610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x2e11/0x4e80 fs/ocfs2/aops.c:1748 #6: ffff8880442ba0e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3c2/0x710 fs/ocfs2/journal.c:350 #7: ffffffff8eebccb0 (dquot_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline] #7: ffffffff8eebccb0 (dquot_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline] #7: ffffffff8eebccb0 (dquot_srcu){.+.+}-{0:0}, at: __dquot_free_space+0x1f5/0xec0 fs/quota/dquot.c:1901 stack backtrace: CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00400-g3088d26962e8 #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_page_mkwrite fs/ocfs2/mmap.c:93 [inline] ocfs2_page_mkwrite+0x6db/0xdb0 fs/ocfs2/mmap.c:144 do_page_mkwrite+0x159/0x340 mm/memory.c:3287 do_shared_fault mm/memory.c:5594 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing mm/memory.c:4160 [inline] handle_pte_fault+0x10c6/0x61c0 mm/memory.c:5997 __handle_mm_fault mm/memory.c:6140 [inline] handle_mm_fault+0x1129/0x1bf0 mm/memory.c:6309 do_user_addr_fault arch/x86/mm/fault.c:1388 [inline] handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x2bb/0x920 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7ff3f5d5790c Code: 00 00 00 74 a0 83 f9 c0 0f 87 56 fe ff ff 62 e1 fe 28 6f 4e 01 48 29 fe 48 83 c7 3f 49 8d 0c 10 48 83 e7 c0 48 01 fe 48 29 f9 a4 62 c1 fe 28 7f 00 62 c1 fe 28 7f 48 01 c3 0f 1f 40 00 4c 8b RSP: 002b:00007ffe890764c8 EFLAGS: 00010206 RAX: 000020000000e400 RBX: 0000000000000004 RCX: 000000000000568e RDX: 000000000001f28e RSI: 00007ff3f581d898 RDI: 0000200000028000 RBP: 00007ff3f5fb7ba0 R08: 000020000000e400 R09: 000000000000000f R10: 0000000000000000 R11: 0000000000000002 R12: 00007ff3f5fb5fac R13: 00007ff3f5fb5fa0 R14: fffffffffffffffe R15: 00007ffe890765e0 (syz.0.0,5327,0):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.0.0,5327,0):ocfs2_write_dquot:682 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_mark_dquot_dirty:983 ERROR: status = -30 (syz.0.0,5327,0):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.0.0,5327,0):ocfs2_write_dquot:682 ERROR: status = -30 (syz.0.0,5327,0):ocfs2_mark_dquot_dirty:983 ERROR: status = -30 (syz.0.0,5327,0):__ocfs2_page_mkwrite:97 ERROR: status = -30