====================================================== WARNING: possible circular locking dependency detected 5.15.189-syzkaller #0 Not tainted ------------------------------------------------------ syz.3.96/4669 is trying to acquire lock: ffff888024b10650 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_setattr+0x886/0x1a10 fs/ocfs2/file.c:1266 but task is already holding lock: ffff88805e086a20 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_setattr+0x877/0x1a10 fs/ocfs2/file.c:1265 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&oi->ip_alloc_sem){++++}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_read_virt_blocks+0x23f/0x8a0 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x3d1/0x1f90 fs/ocfs2/dir.c:1091 ocfs2_rename+0x1d36/0x3690 fs/ocfs2/namei.c:1568 vfs_rename+0xbbf/0x10d0 fs/namei.c:4832 do_renameat2+0xa83/0xf70 fs/namei.c:4985 __do_sys_rename fs/namei.c:5031 [inline] __se_sys_rename fs/namei.c:5029 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5029 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #2 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1338/0x15a0 fs/jbd2/transaction.c:464 jbd2__journal_start+0x2b7/0x5a0 fs/jbd2/transaction.c:521 jbd2_journal_start+0x26/0x30 fs/jbd2/transaction.c:560 ocfs2_start_trans+0x374/0x6c0 fs/ocfs2/journal.c:376 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline] ocfs2_reserve_local_alloc_bits+0xaeb/0x24c0 fs/ocfs2/localalloc.c:668 ocfs2_reserve_clusters_with_limit+0x1bb/0xba0 fs/ocfs2/suballoc.c:1162 ocfs2_mknod+0xddd/0x22b0 fs/ocfs2/namei.c:354 ocfs2_mkdir+0x192/0x410 fs/ocfs2/namei.c:657 vfs_mkdir+0x387/0x570 fs/namei.c:4065 do_mkdirat+0x1d7/0x5a0 fs/namei.c:4090 __do_sys_mkdirat fs/namei.c:4105 [inline] __se_sys_mkdirat fs/namei.c:4103 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4103 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_start_trans+0x368/0x6c0 fs/ocfs2/journal.c:374 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline] ocfs2_reserve_local_alloc_bits+0xaeb/0x24c0 fs/ocfs2/localalloc.c:668 ocfs2_reserve_clusters_with_limit+0x1bb/0xba0 fs/ocfs2/suballoc.c:1162 ocfs2_mknod+0xddd/0x22b0 fs/ocfs2/namei.c:354 ocfs2_mkdir+0x192/0x410 fs/ocfs2/namei.c:657 vfs_mkdir+0x387/0x570 fs/namei.c:4065 do_mkdirat+0x1d7/0x5a0 fs/namei.c:4090 __do_sys_mkdirat fs/namei.c:4105 [inline] __se_sys_mkdirat fs/namei.c:4103 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4103 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 (sb_internal#3){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2c33/0x7c60 kernel/locking/lockdep.c:5012 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1811 [inline] sb_start_intwrite include/linux/fs.h:1928 [inline] ocfs2_start_trans+0x269/0x6c0 fs/ocfs2/journal.c:372 ocfs2_setattr+0x886/0x1a10 fs/ocfs2/file.c:1266 notify_change+0xbcd/0xee0 fs/attr.c:505 ovl_workdir_create+0x3ee/0x580 fs/overlayfs/super.c:830 ovl_make_workdir fs/overlayfs/super.c:1376 [inline] ovl_get_workdir+0x352/0x11a0 fs/overlayfs/super.c:1526 ovl_fill_super+0x1925/0x2ae0 fs/overlayfs/super.c:2082 mount_nodev+0x52/0xe0 fs/super.c:1446 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3014 do_mount fs/namespace.c:3357 [inline] __do_sys_mount fs/namespace.c:3565 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 other info that might help us debug this: Chain exists of: sb_internal#3 --> jbd2_handle --> &oi->ip_alloc_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_alloc_sem); lock(jbd2_handle); lock(&oi->ip_alloc_sem); lock(sb_internal#3); *** DEADLOCK *** 5 locks held by syz.3.96/4669: #0: ffff88802aa5c0e0 (&type->s_umount_key#72/1){+.+.}-{3:3}, at: alloc_super+0x201/0x950 fs/super.c:229 #1: ffff888024b10460 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:377 #2: ffff88805e085f48 (&sb->s_type->i_mutex_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #2: ffff88805e085f48 (&sb->s_type->i_mutex_key#23/1){+.+.}-{3:3}, at: ovl_workdir_create+0x127/0x580 fs/overlayfs/super.c:768 #3: ffff88805e086d88 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #3: ffff88805e086d88 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: ovl_workdir_create+0x3d3/0x580 fs/overlayfs/super.c:829 #4: ffff88805e086a20 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_setattr+0x877/0x1a10 fs/ocfs2/file.c:1265 stack backtrace: CPU: 1 PID: 4669 Comm: syz.3.96 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 check_noncircular+0x274/0x310 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2c33/0x7c60 kernel/locking/lockdep.c:5012 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1811 [inline] sb_start_intwrite include/linux/fs.h:1928 [inline] ocfs2_start_trans+0x269/0x6c0 fs/ocfs2/journal.c:372 ocfs2_setattr+0x886/0x1a10 fs/ocfs2/file.c:1266 notify_change+0xbcd/0xee0 fs/attr.c:505 ovl_workdir_create+0x3ee/0x580 fs/overlayfs/super.c:830 ovl_make_workdir fs/overlayfs/super.c:1376 [inline] ovl_get_workdir+0x352/0x11a0 fs/overlayfs/super.c:1526 ovl_fill_super+0x1925/0x2ae0 fs/overlayfs/super.c:2082 mount_nodev+0x52/0xe0 fs/super.c:1446 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3014 do_mount fs/namespace.c:3357 [inline] __do_sys_mount fs/namespace.c:3565 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f9dc44cd9a9 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:00007f9dc22f3038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f9dc46f5160 RCX: 00007f9dc44cd9a9 RDX: 0000200000000b80 RSI: 0000200000000340 RDI: 0000000000000000 RBP: 00007f9dc454fd69 R08: 00002000000004c0 R09: 0000000000000000 R10: 0000000000200008 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9dc46f5160 R15: 00007ffc441ce798 overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. overlayfs: failed to set xattr on upper overlayfs: ...falling back to index=off,metacopy=off. overlayfs: upper fs missing required features.