loop3: detected capacity change from 0 to 32768 ocfs2: Mounting device (7,3) on (node local, slot 0) with writeback data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.3.241/6795 is trying to acquire lock: ffff88807aaddf58 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] ffff88807aaddf58 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0x126/0x24b0 fs/ocfs2/localalloc.c:635 but task is already holding lock: ffff88807aadb120 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: __ocfs2_change_file_space+0x760/0xe40 fs/ocfs2/file.c:2014 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #5 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 ocfs2_try_remove_refcount_tree+0xb7/0x320 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x596/0x11f0 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x4e1/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1ab/0x2a0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:956 [inline] vfs_remove_acl+0x4e3/0x740 fs/posix_acl.c:1243 removexattr fs/xattr.c:907 [inline] path_removexattr+0x23b/0x3f0 fs/xattr.c:929 __do_sys_lremovexattr fs/xattr.c:949 [inline] __se_sys_lremovexattr fs/xattr.c:946 [inline] __x64_sys_lremovexattr+0x5d/0x70 fs/xattr.c:946 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #4 (&oi->ip_xattr_sem){++++}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x2fa/0x720 fs/ocfs2/acl.c:366 ocfs2_mknod+0x12e5/0x20f0 fs/ocfs2/namei.c:410 ocfs2_create+0x196/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3488 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0x1277/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_openat fs/open.c:1450 [inline] __se_sys_openat fs/open.c:1445 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1445 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #3 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1e9d/0x20c0 fs/jbd2/transaction.c:448 jbd2__journal_start+0x2bb/0x5b0 fs/jbd2/transaction.c:505 jbd2_journal_start+0x2a/0x40 fs/jbd2/transaction.c:544 ocfs2_start_trans+0x376/0x6c0 fs/ocfs2/journal.c:374 ocfs2_mknod+0xe47/0x20f0 fs/ocfs2/namei.c:361 ocfs2_create+0x196/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3488 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0x1277/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_openat fs/open.c:1450 [inline] __se_sys_openat fs/open.c:1445 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1445 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x36a/0x6c0 fs/ocfs2/journal.c:372 ocfs2_mknod+0xe47/0x20f0 fs/ocfs2/namei.c:361 ocfs2_create+0x196/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3488 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0x1277/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_openat fs/open.c:1450 [inline] __se_sys_openat fs/open.c:1445 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1445 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (sb_internal#5){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1633 [inline] sb_start_intwrite include/linux/fs.h:1755 [inline] ocfs2_start_trans+0x26b/0x6c0 fs/ocfs2/journal.c:370 ocfs2_mknod+0xe47/0x20f0 fs/ocfs2/namei.c:361 ocfs2_create+0x196/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3488 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0x1277/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_openat fs/open.c:1450 [inline] __se_sys_openat fs/open.c:1445 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1445 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_reserve_local_alloc_bits+0x126/0x24b0 fs/ocfs2/localalloc.c:635 ocfs2_reserve_clusters_with_limit+0x1bf/0xba0 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x2fb/0x5b0 fs/ocfs2/suballoc.c:2669 ocfs2_extend_allocation+0x39b/0x1760 fs/ocfs2/file.c:589 ocfs2_allocate_unwritten_extents+0x2ea/0x7b0 fs/ocfs2/file.c:1495 __ocfs2_change_file_space+0x8d6/0xe40 fs/ocfs2/file.c:2022 ocfs2_fallocate+0x1f5/0x240 fs/ocfs2/file.c:2137 vfs_fallocate+0x58e/0x700 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xc1/0x110 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 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_sysfile_lock_key[args->fi_sysfile_type]#4 --> &oi->ip_xattr_sem --> &ocfs2_file_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&oi->ip_xattr_sem); lock(&ocfs2_file_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4); *** DEADLOCK *** 3 locks held by syz.3.241/6795: #0: ffff888077e04418 (sb_writers#27){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2711 [inline] #0: ffff888077e04418 (sb_writers#27){.+.+}-{0:0}, at: vfs_fallocate+0x4fb/0x700 fs/open.c:323 #1: ffff88807aadb498 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #1: ffff88807aadb498 (&sb->s_type->i_mutex_key#32){+.+.}-{3:3}, at: __ocfs2_change_file_space+0x1d9/0xe40 fs/ocfs2/file.c:1948 #2: ffff88807aadb120 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: __ocfs2_change_file_space+0x760/0xe40 fs/ocfs2/file.c:2014 stack backtrace: CPU: 0 PID: 6795 Comm: syz.3.241 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 check_noncircular+0x2bd/0x3c0 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_reserve_local_alloc_bits+0x126/0x24b0 fs/ocfs2/localalloc.c:635 ocfs2_reserve_clusters_with_limit+0x1bf/0xba0 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x2fb/0x5b0 fs/ocfs2/suballoc.c:2669 ocfs2_extend_allocation+0x39b/0x1760 fs/ocfs2/file.c:589 ocfs2_allocate_unwritten_extents+0x2ea/0x7b0 fs/ocfs2/file.c:1495 __ocfs2_change_file_space+0x8d6/0xe40 fs/ocfs2/file.c:2022 ocfs2_fallocate+0x1f5/0x240 fs/ocfs2/file.c:2137 vfs_fallocate+0x58e/0x700 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xc1/0x110 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7e4f98eba9 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:00007f7e5089d038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f7e4fbd5fa0 RCX: 00007f7e4f98eba9 RDX: 0000000000002000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f7e4fa11e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7e4fbd6038 R14: 00007f7e4fbd5fa0 R15: 00007ffd59aeeca8