ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.16.0-rc7-syzkaller #0 Not tainted ------------------------------------------------------ syz.2.233/7101 is trying to acquire lock: ffff888078316618 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ffff888078316618 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ffff888078316618 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0x15b8/0x6850 fs/ocfs2/aops.c:1648 but task is already holding lock: ffff888059a8bf60 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x1ac/0x340 fs/ocfs2/aops.c:1880 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_alloc_sem){++++}-{4:4}: down_write+0x92/0x200 kernel/locking/rwsem.c:1577 ocfs2_try_remove_refcount_tree+0xa7/0x320 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x1043/0x2a80 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x46d/0x550 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x224/0x2d0 fs/ocfs2/acl.c:286 set_posix_acl+0x25f/0x320 fs/posix_acl.c:954 vfs_remove_acl+0x33f/0x650 fs/posix_acl.c:1241 removexattr fs/xattr.c:1022 [inline] filename_removexattr fs/xattr.c:1052 [inline] path_removexattrat+0x364/0x5e0 fs/xattr.c:1088 __do_sys_removexattr fs/xattr.c:1100 [inline] __se_sys_removexattr fs/xattr.c:1097 [inline] __x64_sys_removexattr+0x5b/0x80 fs/xattr.c:1097 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x9b/0x480 kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x2fc/0x7d0 fs/ocfs2/acl.c:366 ocfs2_mknod+0xd5c/0x2540 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x17c/0x490 fs/ocfs2/namei.c:656 vfs_mkdir+0x593/0x8c0 fs/namei.c:4375 do_mkdirat+0x304/0x3e0 fs/namei.c:4408 __do_sys_mkdirat fs/namei.c:4425 [inline] __se_sys_mkdirat fs/namei.c:4423 [inline] __x64_sys_mkdirat+0x83/0xb0 fs/namei.c:4423 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (jbd2_handle){++++}-{0:0}: start_this_handle+0x5ea/0x1410 fs/jbd2/transaction.c:444 jbd2__journal_start+0x394/0x6a0 fs/jbd2/transaction.c:501 jbd2_journal_start+0x29/0x40 fs/jbd2/transaction.c:540 ocfs2_start_trans+0x3b9/0x970 fs/ocfs2/journal.c:374 ocfs2_mknod+0xc19/0x2540 fs/ocfs2/namei.c:361 ocfs2_mkdir+0x17c/0x490 fs/ocfs2/namei.c:656 vfs_mkdir+0x593/0x8c0 fs/namei.c:4375 do_mkdirat+0x304/0x3e0 fs/namei.c:4408 __do_sys_mkdirat fs/namei.c:4425 [inline] __se_sys_mkdirat fs/namei.c:4423 [inline] __x64_sys_mkdirat+0x83/0xb0 fs/namei.c:4423 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x9b/0x480 kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x3ae/0x970 fs/ocfs2/journal.c:372 ocfs2_mknod+0xc19/0x2540 fs/ocfs2/namei.c:361 ocfs2_mkdir+0x17c/0x490 fs/ocfs2/namei.c:656 vfs_mkdir+0x593/0x8c0 fs/namei.c:4375 do_mkdirat+0x304/0x3e0 fs/namei.c:4408 __do_sys_mkdirat fs/namei.c:4425 [inline] __se_sys_mkdirat fs/namei.c:4423 [inline] __x64_sys_mkdirat+0x83/0xb0 fs/namei.c:4423 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (sb_internal#5){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain kernel/locking/lockdep.c:3911 [inline] __lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5240 lock_acquire kernel/locking/lockdep.c:5871 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828 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+0x29d/0x970 fs/ocfs2/journal.c:370 ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ocfs2_write_begin_nolock+0x15b8/0x6850 fs/ocfs2/aops.c:1648 ocfs2_write_begin+0x1cb/0x340 fs/ocfs2/aops.c:1882 generic_perform_write+0x3d0/0x930 mm/filemap.c:4112 __generic_file_write_iter+0x1f7/0x240 mm/filemap.c:4229 ocfs2_file_write_iter+0xbc4/0x21b0 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x6c7/0x1150 fs/read_write.c:686 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: sb_internal#5 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_alloc_sem); lock(&oi->ip_xattr_sem); lock(&oi->ip_alloc_sem); rlock(sb_internal#5); *** DEADLOCK *** 4 locks held by syz.2.233/7101: #0: ffff888078f00638 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x2a2/0x370 fs/file.c:1217 #1: ffff888078316428 (sb_writers#23){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:738 #2: ffff888059a8c2c0 (&sb->s_type->i_mutex_key#29){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #2: ffff888059a8c2c0 (&sb->s_type->i_mutex_key#29){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x3c5/0x21b0 fs/ocfs2/file.c:2399 #3: ffff888059a8bf60 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x1ac/0x340 fs/ocfs2/aops.c:1880 stack backtrace: CPU: 0 UID: 0 PID: 7101 Comm: syz.2.233 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2046 check_noncircular+0x14c/0x170 kernel/locking/lockdep.c:2178 check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain kernel/locking/lockdep.c:3911 [inline] __lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5240 lock_acquire kernel/locking/lockdep.c:5871 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828 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+0x29d/0x970 fs/ocfs2/journal.c:370 ocfs2_write_begin_inline fs/ocfs2/aops.c:1458 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1562 [inline] ocfs2_write_begin_nolock+0x15b8/0x6850 fs/ocfs2/aops.c:1648 ocfs2_write_begin+0x1cb/0x340 fs/ocfs2/aops.c:1882 generic_perform_write+0x3d0/0x930 mm/filemap.c:4112 __generic_file_write_iter+0x1f7/0x240 mm/filemap.c:4229 ocfs2_file_write_iter+0xbc4/0x21b0 fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x6c7/0x1150 fs/read_write.c:686 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f255458e9a9 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:00007f2555426038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f25547b5fa0 RCX: 00007f255458e9a9 RDX: 0000000000000118 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f2554610d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f25547b5fa0 R15: 00007ffc70856be8