====================================================== WARNING: possible circular locking dependency detected 5.15.185-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.11/4193 is trying to acquire lock: ffff0000d9ed0650 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_setattr+0x954/0x16c4 fs/ocfs2/file.c:1266 but task is already holding lock: ffff0000e8f38660 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_setattr+0x944/0x16c4 fs/ocfs2/file.c:1265 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 ocfs2_read_virt_blocks+0x228/0x858 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+0x314/0x1b84 fs/ocfs2/dir.c:1091 ocfs2_find_files_on_disk+0x10c/0x388 fs/ocfs2/dir.c:1995 ocfs2_lookup_ino_from_name+0x60/0x114 fs/ocfs2/dir.c:2017 ocfs2_find_victim_alloc_group+0x16c/0x780 fs/ocfs2/move_extents.c:379 ocfs2_move_extent fs/ocfs2/move_extents.c:650 [inline] __ocfs2_move_extents_range+0x154c/0x2aac fs/ocfs2/move_extents.c:860 ocfs2_move_extents+0x314/0x7e0 fs/ocfs2/move_extents.c:927 ocfs2_ioctl_move_extents+0x3fc/0x5c8 fs/ocfs2/move_extents.c:1053 ocfs2_ioctl+0x204/0xc60 fs/ocfs2/ioctl.c:931 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #2 (jbd2_handle){++++}-{0:0}: start_this_handle+0xef4/0x11a4 fs/jbd2/transaction.c:464 jbd2__journal_start+0x28c/0x744 fs/jbd2/transaction.c:521 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:560 ocfs2_start_trans+0x43c/0x794 fs/ocfs2/journal.c:376 ocfs2_mknod+0xc60/0x1e88 fs/ocfs2/namei.c:361 ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x1144/0x26e4 fs/namei.c:3739 do_filp_open+0x164/0x330 fs/namei.c:3769 do_sys_openat2+0x128/0x3d8 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x120/0x154 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 ocfs2_start_trans+0x430/0x794 fs/ocfs2/journal.c:374 ocfs2_mknod+0xc60/0x1e88 fs/ocfs2/namei.c:361 ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x1144/0x26e4 fs/namei.c:3739 do_filp_open+0x164/0x330 fs/namei.c:3769 do_sys_openat2+0x128/0x3d8 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x120/0x154 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #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+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 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+0x2c4/0x794 fs/ocfs2/journal.c:372 ocfs2_setattr+0x954/0x16c4 fs/ocfs2/file.c:1266 notify_change+0xa08/0xcd8 fs/attr.c:505 chmod_common+0x1dc/0x344 fs/open.c:582 do_fchmodat+0xcc/0x1d0 fs/open.c:621 __do_sys_fchmodat fs/open.c:634 [inline] __se_sys_fchmodat fs/open.c:631 [inline] __arm64_sys_fchmodat+0x7c/0x94 fs/open.c:631 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Chain exists of: sb_internal#3 --> jbd2_handle --> &ocfs2_file_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(jbd2_handle); lock(&ocfs2_file_ip_alloc_sem_key); lock(sb_internal#3); *** DEADLOCK *** 3 locks held by syz.0.11/4193: #0: ffff0000d9ed0460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff0000e8f389c8 (&type->i_mutex_dir_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff0000e8f389c8 (&type->i_mutex_dir_key#9){+.+.}-{3:3}, at: chmod_common+0x134/0x344 fs/open.c:576 #2: ffff0000e8f38660 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_setattr+0x944/0x16c4 fs/ocfs2/file.c:1265 stack backtrace: CPU: 0 PID: 4193 Comm: syz.0.11 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2011 check_noncircular+0x240/0x2d4 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+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 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+0x2c4/0x794 fs/ocfs2/journal.c:372 ocfs2_setattr+0x954/0x16c4 fs/ocfs2/file.c:1266 notify_change+0xa08/0xcd8 fs/attr.c:505 chmod_common+0x1dc/0x344 fs/open.c:582 do_fchmodat+0xcc/0x1d0 fs/open.c:621 __do_sys_fchmodat fs/open.c:634 [inline] __se_sys_fchmodat fs/open.c:631 [inline] __arm64_sys_fchmodat+0x7c/0x94 fs/open.c:631 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584