====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.1.250/5324 is trying to acquire lock: ffff888056682650 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_setattr+0xbc2/0x1ad0 fs/ocfs2/file.c:1266 but task is already holding lock: ffff88805d360660 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_setattr+0xbb3/0x1ad0 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+0x237/0x8d0 fs/ocfs2/extent_map.c:984 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x3ca/0x2060 fs/ocfs2/dir.c:1091 ocfs2_rename+0x1e93/0x3960 fs/ocfs2/namei.c:1568 vfs_rename+0xbe1/0x1100 fs/namei.c:4840 do_renameat2+0x8b7/0xf60 fs/namei.c:4993 __do_sys_rename fs/namei.c:5039 [inline] __se_sys_rename fs/namei.c:5037 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5037 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+0x136f/0x15c0 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+0x3b2/0x6f0 fs/ocfs2/journal.c:376 ocfs2_modify_bh+0xe0/0x4c0 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x13c8/0x1750 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x756/0xac0 fs/quota/dquot.c:2463 dquot_load_quota_inode+0x2d8/0x5d0 fs/quota/dquot.c:2500 ocfs2_enable_quotas+0x1c5/0x490 fs/ocfs2/super.c:927 ocfs2_fill_super+0x3cd2/0x50f0 fs/ocfs2/super.c:1140 mount_bdev+0x287/0x3c0 fs/super.c:1400 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:3034 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562 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+0x3a6/0x6f0 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xe0/0x4c0 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x13c8/0x1750 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x756/0xac0 fs/quota/dquot.c:2463 dquot_load_quota_inode+0x2d8/0x5d0 fs/quota/dquot.c:2500 ocfs2_enable_quotas+0x1c5/0x490 fs/ocfs2/super.c:927 ocfs2_fill_super+0x3cd2/0x50f0 fs/ocfs2/super.c:1140 mount_bdev+0x287/0x3c0 fs/super.c:1400 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:3034 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562 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#4){.+.+}-{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+0x2c42/0x7d10 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 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+0x2a7/0x6f0 fs/ocfs2/journal.c:372 ocfs2_setattr+0xbc2/0x1ad0 fs/ocfs2/file.c:1266 notify_change+0xbcd/0xee0 fs/attr.c:505 do_truncate+0x1ac/0x240 fs/open.c:65 vfs_truncate+0x262/0x2f0 fs/open.c:111 do_sys_truncate+0xf2/0x1c0 fs/open.c:134 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#4 --> 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#4); *** DEADLOCK *** 3 locks held by syz.1.250/5324: #0: ffff888056682460 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:386 #1: ffff88805d3609c8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff88805d3609c8 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: do_truncate+0x198/0x240 fs/open.c:63 #2: ffff88805d360660 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_setattr+0xbb3/0x1ad0 fs/ocfs2/file.c:1265 stack backtrace: CPU: 0 PID: 5324 Comm: syz.1.250 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 check_noncircular+0x296/0x330 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+0x2c42/0x7d10 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 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+0x2a7/0x6f0 fs/ocfs2/journal.c:372 ocfs2_setattr+0xbc2/0x1ad0 fs/ocfs2/file.c:1266 notify_change+0xbcd/0xee0 fs/attr.c:505 do_truncate+0x1ac/0x240 fs/open.c:65 vfs_truncate+0x262/0x2f0 fs/open.c:111 do_sys_truncate+0xf2/0x1c0 fs/open.c:134 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: 0033:0x7f7eabe5acb9 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:00007f7eaa0b6028 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007f7eac0d5fa0 RCX: 00007f7eabe5acb9 RDX: 0000000000000000 RSI: 00000000000042dc RDI: 00002000000001c0 RBP: 00007f7eabec8bf7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7eac0d6038 R14: 00007f7eac0d5fa0 R15: 00007ffead3d3438