JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. ====================================================== WARNING: possible circular locking dependency detected 6.11.0-rc4-syzkaller-00011-g521b1e7f4cf0 #0 Not tainted ------------------------------------------------------ syz-executor447/5119 is trying to acquire lock: ffff88803d108610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_setattr+0xcb1/0x1f50 fs/ocfs2/file.c:1259 but task is already holding lock: ffff88803b754da0 (&oi->ip_alloc_sem){+.+.}-{3:3}, at: ocfs2_setattr+0xc9f/0x1f50 fs/ocfs2/file.c:1258 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_alloc_sem){+.+.}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_write+0x99/0x220 kernel/locking/rwsem.c:1579 ocfs2_try_remove_refcount_tree+0xb6/0x330 fs/ocfs2/refcounttree.c:931 ocfs2_xattr_set+0xa4f/0x1930 fs/ocfs2/xattr.c:3670 ocfs2_set_acl+0x4cb/0x580 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x24a/0x3c0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:955 [inline] vfs_set_acl+0x7fd/0xa60 fs/posix_acl.c:1134 do_setxattr fs/xattr.c:626 [inline] path_setxattr+0x3bd/0x4d0 fs/xattr.c:658 __do_sys_setxattr fs/xattr.c:676 [inline] __se_sys_setxattr fs/xattr.c:672 [inline] __x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:672 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 -> #3 (&oi->ip_xattr_sem){++++}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526 ocfs2_init_acl+0x397/0x930 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1c05/0x2b40 fs/ocfs2/namei.c:408 ocfs2_create+0x1ab/0x480 fs/ocfs2/namei.c:672 vfs_create+0x23c/0x3d0 fs/namei.c:3280 do_mknodat+0x447/0x5b0 fs/namei.c:4138 __do_sys_mknodat fs/namei.c:4166 [inline] __se_sys_mknodat fs/namei.c:4163 [inline] __x64_sys_mknodat+0xa7/0xc0 fs/namei.c:4163 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 -> #2 (jbd2_handle){.+.+}-{0:0}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 start_this_handle+0x1eb4/0x2110 fs/jbd2/transaction.c:448 jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505 jbd2_journal_start+0x29/0x40 fs/jbd2/transaction.c:544 ocfs2_start_trans+0x3c9/0x700 fs/ocfs2/journal.c:352 ocfs2_mknod+0x150c/0x2b40 fs/ocfs2/namei.c:359 ocfs2_create+0x1ab/0x480 fs/ocfs2/namei.c:672 vfs_create+0x23c/0x3d0 fs/namei.c:3280 do_mknodat+0x447/0x5b0 fs/namei.c:4138 __do_sys_mknodat fs/namei.c:4166 [inline] __se_sys_mknodat fs/namei.c:4163 [inline] __x64_sys_mknodat+0xa7/0xc0 fs/namei.c:4163 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 -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526 ocfs2_start_trans+0x3be/0x700 fs/ocfs2/journal.c:350 ocfs2_mknod+0x150c/0x2b40 fs/ocfs2/namei.c:359 ocfs2_create+0x1ab/0x480 fs/ocfs2/namei.c:672 vfs_create+0x23c/0x3d0 fs/namei.c:3280 do_mknodat+0x447/0x5b0 fs/namei.c:4138 __do_sys_mknodat fs/namei.c:4166 [inline] __se_sys_mknodat fs/namei.c:4163 [inline] __x64_sys_mknodat+0xa7/0xc0 fs/namei.c:4163 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 (sb_internal#2){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1675 [inline] sb_start_intwrite include/linux/fs.h:1858 [inline] ocfs2_start_trans+0x2b9/0x700 fs/ocfs2/journal.c:348 ocfs2_setattr+0xcb1/0x1f50 fs/ocfs2/file.c:1259 notify_change+0xb9d/0xe70 fs/attr.c:495 chmod_common+0x2ab/0x4c0 fs/open.c:654 do_fchmodat fs/open.c:702 [inline] __do_sys_fchmodat fs/open.c:721 [inline] __se_sys_fchmodat fs/open.c:718 [inline] __x64_sys_fchmodat+0x11d/0x1c0 fs/open.c:718 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: Chain exists of: sb_internal#2 --> &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#2); *** DEADLOCK *** 3 locks held by syz-executor447/5119: #0: ffff88803d108420 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff88803b755100 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline] #1: ffff88803b755100 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: chmod_common+0x1bb/0x4c0 fs/open.c:648 #2: ffff88803b754da0 (&oi->ip_alloc_sem){+.+.}-{3:3}, at: ocfs2_setattr+0xc9f/0x1f50 fs/ocfs2/file.c:1258 stack backtrace: CPU: 0 UID: 0 PID: 5119 Comm: syz-executor447 Not tainted 6.11.0-rc4-syzkaller-00011-g521b1e7f4cf0 #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:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2186 check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1675 [inline] sb_start_intwrite include/linux/fs.h:1858 [inline] ocfs2_start_trans+0x2b9/0x700 fs/ocfs2/journal.c:348 ocfs2_setattr+0xcb1/0x1f50 fs/ocfs2/file.c:1259 notify_change+0xb9d/0xe70 fs/attr.c:495 chmod_common+0x2ab/0x4c0 fs/open.c:654 do_fchmodat fs/open.c:702 [inline] __do_sys_fchmodat fs/open.c:721 [inline] __se_sys_fchmodat fs/open.c:718 [inline] __x64_sys_fchmodat+0x11d/0x1c0 fs/open.c:718 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: 0033:0x7f8ff7b9d659 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffec5171628 EFLAGS: 00000246 ORIG_RAX: 000000000000010c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8ff7b9d659 RDX: 00000000000001ff RSI: 0000000020000440 RDI: 00000000ffffff9c RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffec5171660 R10: 00007ffec5171630 R11: 0000000000000246 R12: 00007ffec5171660 R13: 00007ffec51718e8 R14: 431bde82d7b634db R15: 00007f8ff7be603b