======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.3.47/7031 is trying to acquire lock:
ffff0000c89d8610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_orphan_for_truncate fs/ocfs2/file.c:396 [inline]
ffff0000c89d8610 (sb_internal#4){.+.+}-{0:0}, at: ocfs2_truncate_file+0x5b0/0x12f4 fs/ocfs2/file.c:500

but task is already holding lock:
ffff0000f6a2dbe0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_truncate_file+0x30c/0x12f4 fs/ocfs2/file.c:471

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&oi->ip_alloc_sem){++++}-{4:4}:
       down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537
       ocfs2_xattr_ibody_find+0x100/0x668 fs/ocfs2/xattr.c:2689
       ocfs2_xattr_set_handle+0x2bc/0x5e4 fs/ocfs2/xattr.c:3503
       ocfs2_init_security_set+0xb4/0xd8 fs/ocfs2/xattr.c:7307
       ocfs2_mknod+0x106c/0x1cf0 fs/ocfs2/namei.c:422
       ocfs2_create+0x190/0x474 fs/ocfs2/namei.c:676
       lookup_open fs/namei.c:3796 [inline]
       open_last_lookups fs/namei.c:3895 [inline]
       path_openat+0x12d8/0x2c40 fs/namei.c:4131
       do_filp_open+0x18c/0x36c fs/namei.c:4161
       file_open_name fs/open.c:1381 [inline]
       filp_open+0x15c/0x1b8 fs/open.c:1401
       coredump_file+0x2d0/0x918 fs/coredump.c:931
       vfs_coredump+0x152c/0x2354 fs/coredump.c:1143
       get_signal+0xe38/0x12f8 kernel/signal.c:3019
       arch_do_signal_or_restart+0x1c0/0x4414 arch/arm64/kernel/signal.c:1619
       exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40
       exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
       arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline]
       el0_da+0x174/0x230 arch/arm64/kernel/entry-common.c:541
       el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:746
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #3 (&oi->ip_xattr_sem){++++}-{4:4}:
       down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537
       ocfs2_init_acl+0x258/0x5f0 fs/ocfs2/acl.c:366
       ocfs2_mknod+0x1028/0x1cf0 fs/ocfs2/namei.c:413
       ocfs2_create+0x190/0x474 fs/ocfs2/namei.c:676
       lookup_open fs/namei.c:3796 [inline]
       open_last_lookups fs/namei.c:3895 [inline]
       path_openat+0x12d8/0x2c40 fs/namei.c:4131
       do_filp_open+0x18c/0x36c fs/namei.c:4161
       file_open_name fs/open.c:1381 [inline]
       filp_open+0x15c/0x1b8 fs/open.c:1401
       coredump_file+0x2d0/0x918 fs/coredump.c:931
       vfs_coredump+0x152c/0x2354 fs/coredump.c:1143
       get_signal+0xe38/0x12f8 kernel/signal.c:3019
       arch_do_signal_or_restart+0x1c0/0x4414 arch/arm64/kernel/signal.c:1619
       exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40
       exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
       arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline]
       el0_da+0x174/0x230 arch/arm64/kernel/entry-common.c:541
       el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:746
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #2 (jbd2_handle){++++}-{0:0}:
       start_this_handle+0xe74/0x10dc fs/jbd2/transaction.c:444
       jbd2__journal_start+0x288/0x51c fs/jbd2/transaction.c:501
       jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:540
       ocfs2_start_trans+0x368/0x6b0 fs/ocfs2/journal.c:374
       ocfs2_mknod+0xc50/0x1cf0 fs/ocfs2/namei.c:364
       ocfs2_create+0x190/0x474 fs/ocfs2/namei.c:676
       lookup_open fs/namei.c:3796 [inline]
       open_last_lookups fs/namei.c:3895 [inline]
       path_openat+0x12d8/0x2c40 fs/namei.c:4131
       do_filp_open+0x18c/0x36c fs/namei.c:4161
       file_open_name fs/open.c:1381 [inline]
       filp_open+0x15c/0x1b8 fs/open.c:1401
       coredump_file+0x2d0/0x918 fs/coredump.c:931
       vfs_coredump+0x152c/0x2354 fs/coredump.c:1143
       get_signal+0xe38/0x12f8 kernel/signal.c:3019
       arch_do_signal_or_restart+0x1c0/0x4414 arch/arm64/kernel/signal.c:1619
       exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40
       exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
       arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline]
       el0_da+0x174/0x230 arch/arm64/kernel/entry-common.c:541
       el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:746
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #1 (&journal->j_trans_barrier){.+.+}-{4:4}:
       down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537
       ocfs2_start_trans+0x35c/0x6b0 fs/ocfs2/journal.c:372
       ocfs2_mknod+0xc50/0x1cf0 fs/ocfs2/namei.c:364
       ocfs2_create+0x190/0x474 fs/ocfs2/namei.c:676
       lookup_open fs/namei.c:3796 [inline]
       open_last_lookups fs/namei.c:3895 [inline]
       path_openat+0x12d8/0x2c40 fs/namei.c:4131
       do_filp_open+0x18c/0x36c fs/namei.c:4161
       file_open_name fs/open.c:1381 [inline]
       filp_open+0x15c/0x1b8 fs/open.c:1401
       coredump_file+0x2d0/0x918 fs/coredump.c:931
       vfs_coredump+0x152c/0x2354 fs/coredump.c:1143
       get_signal+0xe38/0x12f8 kernel/signal.c:3019
       arch_do_signal_or_restart+0x1c0/0x4414 arch/arm64/kernel/signal.c:1619
       exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40
       exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
       arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline]
       el0_da+0x174/0x230 arch/arm64/kernel/entry-common.c:541
       el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:746
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

-> #0 (sb_internal#4){.+.+}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain kernel/locking/lockdep.c:3908 [inline]
       __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237
       lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
       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:1916 [inline]
       sb_start_intwrite include/linux/fs.h:2099 [inline]
       ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370
       ocfs2_orphan_for_truncate fs/ocfs2/file.c:396 [inline]
       ocfs2_truncate_file+0x5b0/0x12f4 fs/ocfs2/file.c:500
       ocfs2_setattr+0x1148/0x17a0 fs/ocfs2/file.c:1212
       notify_change+0xa0c/0xcb8 fs/attr.c:546
       do_truncate+0x198/0x210 fs/open.c:68
       coredump_file+0x648/0x918 fs/coredump.c:964
       vfs_coredump+0x152c/0x2354 fs/coredump.c:1143
       get_signal+0xe38/0x12f8 kernel/signal.c:3019
       arch_do_signal_or_restart+0x1c0/0x4414 arch/arm64/kernel/signal.c:1619
       exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40
       exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
       arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline]
       el0_da+0x174/0x230 arch/arm64/kernel/entry-common.c:541
       el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:746
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

other info that might help us debug this:

Chain exists of:
  sb_internal#4 --> &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#4);

 *** DEADLOCK ***

2 locks held by syz.3.47/7031:
 #0: ffff0000f6a2df40 (&sb->s_type->i_mutex_key#27){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:985 [inline]
 #0: ffff0000f6a2df40 (&sb->s_type->i_mutex_key#27){+.+.}-{4:4}, at: do_truncate+0x164/0x210 fs/open.c:63
 #1: ffff0000f6a2dbe0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_truncate_file+0x30c/0x12f4 fs/ocfs2/file.c:471

stack backtrace:
CPU: 1 UID: 0 PID: 7031 Comm: syz.3.47 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2043
 check_noncircular+0x154/0x174 kernel/locking/lockdep.c:2175
 check_prev_add kernel/locking/lockdep.c:3165 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
 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:1916 [inline]
 sb_start_intwrite include/linux/fs.h:2099 [inline]
 ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370
 ocfs2_orphan_for_truncate fs/ocfs2/file.c:396 [inline]
 ocfs2_truncate_file+0x5b0/0x12f4 fs/ocfs2/file.c:500
 ocfs2_setattr+0x1148/0x17a0 fs/ocfs2/file.c:1212
 notify_change+0xa0c/0xcb8 fs/attr.c:546
 do_truncate+0x198/0x210 fs/open.c:68
 coredump_file+0x648/0x918 fs/coredump.c:964
 vfs_coredump+0x152c/0x2354 fs/coredump.c:1143
 get_signal+0xe38/0x12f8 kernel/signal.c:3019
 arch_do_signal_or_restart+0x1c0/0x4414 arch/arm64/kernel/signal.c:1619
 exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline]
 el0_da+0x174/0x230 arch/arm64/kernel/entry-common.c:541
 el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:746
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596