====================================================== WARNING: possible circular locking dependency detected 6.1.128-syzkaller #0 Not tainted ------------------------------------------------------ syz.3.4199/15269 is trying to acquire lock: ffff888056aecda0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976 but task is already holding lock: ffff8880684da990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f51/0x21b0 fs/jbd2/transaction.c:463 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (jbd2_handle){++++}-{0:0}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 start_this_handle+0x1f71/0x21b0 fs/jbd2/transaction.c:463 jbd2__journal_start+0x2d1/0x5c0 fs/jbd2/transaction.c:520 jbd2_journal_start+0x25/0x30 fs/jbd2/transaction.c:559 ocfs2_start_trans+0x3c0/0x6f0 fs/ocfs2/journal.c:354 ocfs2_shutdown_local_alloc+0x214/0xa90 fs/ocfs2/localalloc.c:416 ocfs2_dismount_volume+0x1fb/0x960 fs/ocfs2/super.c:1879 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1470 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3b5/0x6f0 fs/ocfs2/journal.c:352 ocfs2_shutdown_local_alloc+0x214/0xa90 fs/ocfs2/localalloc.c:416 ocfs2_dismount_volume+0x1fb/0x960 fs/ocfs2/super.c:1879 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1470 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (sb_internal#5){.+.+}-{0:0}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1891 [inline] sb_start_intwrite include/linux/fs.h:2013 [inline] ocfs2_start_trans+0x2b0/0x6f0 fs/ocfs2/journal.c:350 ocfs2_orphan_for_truncate fs/ocfs2/file.c:392 [inline] ocfs2_truncate_file+0x6b1/0x1630 fs/ocfs2/file.c:496 ocfs2_setattr+0x17c5/0x1e60 fs/ocfs2/file.c:1212 notify_change+0xce3/0xfc0 fs/attr.c:499 do_truncate+0x21c/0x300 fs/open.c:65 handle_truncate fs/namei.c:3285 [inline] do_open fs/namei.c:3630 [inline] path_openat+0x27e2/0x2e60 fs/namei.c:3783 do_filp_open+0x230/0x480 fs/namei.c:3810 do_sys_openat2+0x13b/0x4f0 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_creat fs/open.c:1412 [inline] __se_sys_creat fs/open.c:1406 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1406 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block+0x102/0x5b0 fs/ocfs2/dir.c:508 ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1829 [inline] ocfs2_dir_foreach_blk+0x2a1/0x1e10 fs/ocfs2/dir.c:1915 ocfs2_dir_foreach+0x20c/0x270 fs/ocfs2/dir.c:1925 ocfs2_empty_dir+0x446/0x7b0 fs/ocfs2/dir.c:2139 ocfs2_rename+0x26c2/0x4000 fs/ocfs2/namei.c:1499 vfs_rename+0xd32/0x10f0 fs/namei.c:4874 do_renameat2+0xde0/0x1440 fs/namei.c:5027 __do_sys_rename fs/namei.c:5073 [inline] __se_sys_rename fs/namei.c:5071 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5071 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &ocfs2_file_ip_alloc_sem_key --> &journal->j_trans_barrier --> jbd2_handle Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(jbd2_handle); lock(&journal->j_trans_barrier); lock(jbd2_handle); lock(&ocfs2_file_ip_alloc_sem_key); *** DEADLOCK *** 7 locks held by syz.3.4199/15269: #0: ffff888065cc2460 (sb_writers#34){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393 #1: ffff888054f32648 (&type->i_mutex_dir_key#18/1){+.+.}-{3:3}, at: do_renameat2+0x65a/0x1440 fs/namei.c:4966 #2: ffff888056aed108 (&sb->s_type->i_mutex_key#42){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff888056aed108 (&sb->s_type->i_mutex_key#42){+.+.}-{3:3}, at: vfs_rename+0x814/0x10f0 fs/namei.c:4839 #3: ffff888070d909c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #3: ffff888070d909c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_lookup_lock_orphan_dir+0xfe/0x340 fs/ocfs2/namei.c:2116 #4: ffff888065cc2650 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_rename+0x1eed/0x4000 fs/ocfs2/namei.c:1488 #5: ffff8880591048e8 (&journal->j_trans_barrier){.+.+}-{3:3}, at: ocfs2_start_trans+0x3b5/0x6f0 fs/ocfs2/journal.c:352 #6: ffff8880684da990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f51/0x21b0 fs/jbd2/transaction.c:463 stack backtrace: CPU: 0 PID: 15269 Comm: syz.3.4199 Not tainted 6.1.128-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block+0x102/0x5b0 fs/ocfs2/dir.c:508 ocfs2_dir_foreach_blk_el fs/ocfs2/dir.c:1829 [inline] ocfs2_dir_foreach_blk+0x2a1/0x1e10 fs/ocfs2/dir.c:1915 ocfs2_dir_foreach+0x20c/0x270 fs/ocfs2/dir.c:1925 ocfs2_empty_dir+0x446/0x7b0 fs/ocfs2/dir.c:2139 ocfs2_rename+0x26c2/0x4000 fs/ocfs2/namei.c:1499 vfs_rename+0xd32/0x10f0 fs/namei.c:4874 do_renameat2+0xde0/0x1440 fs/namei.c:5027 __do_sys_rename fs/namei.c:5073 [inline] __se_sys_rename fs/namei.c:5071 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5071 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fcfe718cda9 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:00007fcfe7f7c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fcfe73a6080 RCX: 00007fcfe718cda9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000040 RBP: 00007fcfe720e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fcfe73a6080 R15: 00007ffdea1fa138