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 syzkaller #0 Not tainted ------------------------------------------------------ syz.0.365/7186 is trying to acquire lock: ffff88805f064da0 (&oi->ip_alloc_sem){+.+.}-{3:3}, at: ocfs2_reflink+0x4cf/0x920 fs/ocfs2/refcounttree.c:4277 but task is already holding lock: ffff88805f064e38 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_reflink+0x4c0/0x920 fs/ocfs2/refcounttree.c:4276 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&oi->ip_xattr_sem){++++}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x30a/0x770 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1427/0x2310 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x196/0x430 fs/ocfs2/namei.c:657 vfs_mkdir+0x2a5/0x470 fs/namei.c:4125 do_mkdirat+0x1dc/0x450 fs/namei.c:4148 __do_sys_mkdirat fs/namei.c:4163 [inline] __se_sys_mkdirat fs/namei.c:4161 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4161 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3a8/0x6f0 fs/ocfs2/journal.c:372 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline] ocfs2_reserve_local_alloc_bits+0xb39/0x2620 fs/ocfs2/localalloc.c:668 ocfs2_reserve_clusters_with_limit+0x1ba/0xc20 fs/ocfs2/suballoc.c:1184 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2856 [inline] ocfs2_extend_dir+0x750/0x49b0 fs/ocfs2/dir.c:3201 ocfs2_prepare_dir_for_insert+0x30e7/0x5520 fs/ocfs2/dir.c:4322 ocfs2_mknod+0x831/0x2310 fs/ocfs2/namei.c:294 ocfs2_create+0x196/0x430 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3496 [inline] open_last_lookups fs/namei.c:3564 [inline] path_openat+0x1705/0x3270 fs/namei.c:3798 do_filp_open+0x1f2/0x430 fs/namei.c:3828 do_sys_openat2+0x134/0x1d0 fs/open.c:1422 do_sys_open fs/open.c:1437 [inline] __do_sys_creat fs/open.c:1515 [inline] __se_sys_creat fs/open.c:1509 [inline] __x64_sys_creat+0x90/0xb0 fs/open.c:1509 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (sb_internal#3){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1633 [inline] sb_start_intwrite include/linux/fs.h:1755 [inline] ocfs2_start_trans+0x2a9/0x6f0 fs/ocfs2/journal.c:370 ocfs2_setattr+0xc84/0x1bf0 fs/ocfs2/file.c:1262 notify_change+0xb05/0xde0 fs/attr.c:499 do_truncate+0x1b0/0x240 fs/open.c:66 vfs_truncate+0x266/0x300 fs/open.c:112 do_sys_truncate+0xf6/0x1c0 fs/open.c:135 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&oi->ip_alloc_sem){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x37ef/0x7d80 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 down_write+0x97/0x200 kernel/locking/rwsem.c:1573 ocfs2_reflink+0x4cf/0x920 fs/ocfs2/refcounttree.c:4277 ocfs2_vfs_reflink+0x333/0x450 fs/ocfs2/refcounttree.c:4404 ocfs2_reflink_ioctl+0x3a0/0x450 fs/ocfs2/refcounttree.c:4444 ocfs2_ioctl+0x5b9/0x7e0 fs/ocfs2/ioctl.c:923 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &oi->ip_alloc_sem --> &journal->j_trans_barrier --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(&journal->j_trans_barrier); lock(&oi->ip_xattr_sem); lock(&oi->ip_alloc_sem); *** DEADLOCK *** 4 locks held by syz.0.365/7186: #0: ffff88807dc0c418 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412 #1: ffff888077f02658 (&type->i_mutex_dir_key#12/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline] #1: ffff888077f02658 (&type->i_mutex_dir_key#12/1){+.+.}-{3:3}, at: filename_create+0x20f/0x450 fs/namei.c:3894 #2: ffff88805f065118 (&sb->s_type->i_mutex_key#27){++++}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #2: ffff88805f065118 (&sb->s_type->i_mutex_key#27){++++}-{3:3}, at: ocfs2_vfs_reflink+0x2f3/0x450 fs/ocfs2/refcounttree.c:4401 #3: ffff88805f064e38 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_reflink+0x4c0/0x920 fs/ocfs2/refcounttree.c:4276 stack backtrace: CPU: 1 PID: 7186 Comm: syz.0.365 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 check_noncircular+0x2fc/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x37ef/0x7d80 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 down_write+0x97/0x200 kernel/locking/rwsem.c:1573 ocfs2_reflink+0x4cf/0x920 fs/ocfs2/refcounttree.c:4277 ocfs2_vfs_reflink+0x333/0x450 fs/ocfs2/refcounttree.c:4404 ocfs2_reflink_ioctl+0x3a0/0x450 fs/ocfs2/refcounttree.c:4444 ocfs2_ioctl+0x5b9/0x7e0 fs/ocfs2/ioctl.c:923 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f3df139e019 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:00007f3df226d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f3df1625fa0 RCX: 00007f3df139e019 RDX: 00002000000001c0 RSI: 0000000040186f04 RDI: 0000000000000005 RBP: 00007f3df143500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3df1626038 R14: 00007f3df1625fa0 R15: 00007ffd96ebb658