loop0: detected capacity change from 0 to 262144 JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0 Not tainted ------------------------------------------------------ syz.0.0/5321 is trying to acquire lock: ffff888052196958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448 but task is already holding lock: ffff88805861a2e0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_xattr_ibody_set+0x12c/0xd00 fs/ocfs2/xattr.c:2783 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&oi->ip_alloc_sem){++++}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 ocfs2_xattr_ibody_set+0x12c/0xd00 fs/ocfs2/xattr.c:2783 __ocfs2_xattr_set_handle+0x128/0x10a0 fs/ocfs2/xattr.c:3322 ocfs2_xattr_set+0x128c/0x1930 fs/ocfs2/xattr.c:3650 __vfs_setxattr+0x468/0x4a0 fs/xattr.c:200 __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234 vfs_setxattr+0x221/0x430 fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] file_setxattr+0x1e2/0x2b0 fs/xattr.c:646 path_setxattrat+0x483/0x510 fs/xattr.c:711 __do_sys_fsetxattr fs/xattr.c:761 [inline] __se_sys_fsetxattr fs/xattr.c:758 [inline] __x64_sys_fsetxattr+0xbc/0xe0 fs/xattr.c:758 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (jbd2_handle){++++}-{0:0}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 start_this_handle+0x1eb4/0x2110 fs/jbd2/transaction.c:448 jbd2__journal_restart+0x243/0x690 fs/jbd2/transaction.c:800 ocfs2_extend_trans+0x2d7/0x750 fs/ocfs2/journal.c:435 ocfs2_extend_rotate_transaction fs/ocfs2/alloc.c:2296 [inline] ocfs2_truncate_rec+0x91f/0x1c90 fs/ocfs2/alloc.c:5433 ocfs2_remove_extent+0x1033/0x25f0 fs/ocfs2/alloc.c:5581 __ocfs2_remove_xattr_range fs/ocfs2/xattr.c:779 [inline] ocfs2_xattr_shrink_size fs/ocfs2/xattr.c:832 [inline] ocfs2_xattr_value_truncate+0xec5/0x1960 fs/ocfs2/xattr.c:868 ocfs2_xa_value_truncate fs/ocfs2/xattr.c:1915 [inline] ocfs2_xa_reuse_entry fs/ocfs2/xattr.c:2097 [inline] ocfs2_xa_prepare_entry fs/ocfs2/xattr.c:2141 [inline] ocfs2_xa_set+0x149d/0x2c60 fs/ocfs2/xattr.c:2251 ocfs2_xattr_ibody_set+0x534/0xd00 fs/ocfs2/xattr.c:2795 __ocfs2_xattr_set_handle+0x128/0x10a0 fs/ocfs2/xattr.c:3322 ocfs2_xattr_set+0x128c/0x1930 fs/ocfs2/xattr.c:3650 __vfs_setxattr+0x468/0x4a0 fs/xattr.c:200 __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234 vfs_setxattr+0x221/0x430 fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x2af/0x430 fs/xattr.c:665 path_setxattrat+0x440/0x510 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:743 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_alloc_sem); lock(jbd2_handle); lock(&oi->ip_alloc_sem); rlock(jbd2_handle); *** DEADLOCK *** 6 locks held by syz.0.0/5321: #0: ffff8880525a2420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff88805861a640 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #1: ffff88805861a640 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: vfs_setxattr+0x1e1/0x430 fs/xattr.c:320 #2: ffff88805861a378 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930 fs/ocfs2/xattr.c:3583 #3: ffff8880525a2610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_xattr_set+0x1192/0x1930 fs/ocfs2/xattr.c:3643 #4: ffff88803f5cc8e8 (&journal->j_trans_barrier){.+.+}-{4:4}, at: ocfs2_start_trans+0x3be/0x700 fs/ocfs2/journal.c:350 #5: ffff88805861a2e0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_xattr_ibody_set+0x12c/0xd00 fs/ocfs2/xattr.c:2783 stack backtrace: CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted 6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0 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_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 start_this_handle+0x1eb4/0x2110 fs/jbd2/transaction.c:448 jbd2__journal_restart+0x243/0x690 fs/jbd2/transaction.c:800 ocfs2_extend_trans+0x2d7/0x750 fs/ocfs2/journal.c:435 ocfs2_extend_rotate_transaction fs/ocfs2/alloc.c:2296 [inline] ocfs2_truncate_rec+0x91f/0x1c90 fs/ocfs2/alloc.c:5433 ocfs2_remove_extent+0x1033/0x25f0 fs/ocfs2/alloc.c:5581 __ocfs2_remove_xattr_range fs/ocfs2/xattr.c:779 [inline] ocfs2_xattr_shrink_size fs/ocfs2/xattr.c:832 [inline] ocfs2_xattr_value_truncate+0xec5/0x1960 fs/ocfs2/xattr.c:868 ocfs2_xa_value_truncate fs/ocfs2/xattr.c:1915 [inline] ocfs2_xa_reuse_entry fs/ocfs2/xattr.c:2097 [inline] ocfs2_xa_prepare_entry fs/ocfs2/xattr.c:2141 [inline] ocfs2_xa_set+0x149d/0x2c60 fs/ocfs2/xattr.c:2251 ocfs2_xattr_ibody_set+0x534/0xd00 fs/ocfs2/xattr.c:2795 __ocfs2_xattr_set_handle+0x128/0x10a0 fs/ocfs2/xattr.c:3322 ocfs2_xattr_set+0x128c/0x1930 fs/ocfs2/xattr.c:3650 __vfs_setxattr+0x468/0x4a0 fs/xattr.c:200 __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234 vfs_setxattr+0x221/0x430 fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x2af/0x430 fs/xattr.c:665 path_setxattrat+0x440/0x510 fs/xattr.c:713 __do_sys_setxattr fs/xattr.c:747 [inline] __se_sys_setxattr fs/xattr.c:743 [inline] __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:743 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa792985d19 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:00007fa7936f2038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007fa792b75fa0 RCX: 00007fa792985d19 RDX: 0000000020000480 RSI: 0000000020000140 RDI: 0000000020000100 RBP: 00007fa792a01a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000700 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa792b75fa0 R15: 00007ffe52853be8 syz.0.0 (5321) used greatest stack depth: 17144 bytes left