====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.2.80/6237 is trying to acquire lock: ffff88805fd95118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] ffff88805fd95118 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}, at: __ocfs2_flush_truncate_log+0x352/0x1130 fs/ocfs2/alloc.c:6046 but task is already holding lock: ffff88805fdba658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] ffff88805fdba658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6075 [inline] ffff88805fdba658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_try_to_free_truncate_log+0x1a3/0x370 fs/ocfs2/alloc.c:6135 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}: down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_move_extent fs/ocfs2/move_extents.c:648 [inline] __ocfs2_move_extents_range+0x1a35/0x3450 fs/ocfs2/move_extents.c:868 ocfs2_move_extents+0x3f9/0xa10 fs/ocfs2/move_extents.c:940 ocfs2_ioctl_move_extents+0x4db/0x6e0 fs/ocfs2/move_extents.c:1066 ocfs2_ioctl+0x199/0x7e0 fs/ocfs2/ioctl.c:961 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3162 [inline] check_prevs_add kernel/locking/lockdep.c:3281 [inline] validate_chain kernel/locking/lockdep.c:3897 [inline] __lock_acquire+0x3a07/0x7eb0 kernel/locking/lockdep.c:5171 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5790 down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] __ocfs2_flush_truncate_log+0x352/0x1130 fs/ocfs2/alloc.c:6046 ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6076 [inline] ocfs2_try_to_free_truncate_log+0x1ab/0x370 fs/ocfs2/alloc.c:6135 ocfs2_write_begin_nolock+0x32d3/0x4480 fs/ocfs2/aops.c:1872 ocfs2_dio_wr_get_block+0xba8/0x1820 fs/ocfs2/aops.c:2241 get_more_blocks fs/direct-io.c:647 [inline] do_direct_IO fs/direct-io.c:935 [inline] __blockdev_direct_IO+0x1628/0x32e0 fs/direct-io.c:1248 ocfs2_direct_IO+0x235/0x2a0 fs/ocfs2/aops.c:2488 generic_file_direct_write+0x1c9/0x3e0 mm/filemap.c:3952 __generic_file_write_iter+0x11b/0x230 mm/filemap.c:4108 ocfs2_file_write_iter+0x1724/0x1ef0 fs/ocfs2/file.c:2468 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x747/0xc50 fs/read_write.c:860 iter_file_splice_write+0x6b6/0xcf0 fs/splice.c:736 do_splice_from fs/splice.c:933 [inline] direct_splice_actor+0xe8/0x130 fs/splice.c:1142 splice_direct_to_actor+0x30b/0x8e0 fs/splice.c:1088 do_splice_direct+0x1d5/0x2f0 fs/splice.c:1194 do_sendfile+0x52b/0xe80 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64+0x145/0x1a0 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); *** DEADLOCK *** 4 locks held by syz.2.80/6237: #0: ffff88802eb46418 (sb_writers#16){.+.+}-{0:0}, at: do_sendfile+0x506/0xe80 fs/read_write.c:1253 #1: ffff88805fdbc2d8 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #1: ffff88805fdbc2d8 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x441/0x1ef0 fs/ocfs2/file.c:2398 #2: ffff88805fdbbf60 (&oi->ip_alloc_sem){++++}-{3:3}, at: ocfs2_dio_wr_get_block+0x910/0x1820 fs/ocfs2/aops.c:2227 #3: ffff88805fdba658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #3: ffff88805fdba658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6075 [inline] #3: ffff88805fdba658 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_try_to_free_truncate_log+0x1a3/0x370 fs/ocfs2/alloc.c:6135 stack backtrace: CPU: 0 PID: 6237 Comm: syz.2.80 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 check_noncircular+0x2fc/0x400 kernel/locking/lockdep.c:2215 check_prev_add kernel/locking/lockdep.c:3162 [inline] check_prevs_add kernel/locking/lockdep.c:3281 [inline] validate_chain kernel/locking/lockdep.c:3897 [inline] __lock_acquire+0x3a07/0x7eb0 kernel/locking/lockdep.c:5171 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5790 down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] __ocfs2_flush_truncate_log+0x352/0x1130 fs/ocfs2/alloc.c:6046 ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6076 [inline] ocfs2_try_to_free_truncate_log+0x1ab/0x370 fs/ocfs2/alloc.c:6135 ocfs2_write_begin_nolock+0x32d3/0x4480 fs/ocfs2/aops.c:1872 ocfs2_dio_wr_get_block+0xba8/0x1820 fs/ocfs2/aops.c:2241 get_more_blocks fs/direct-io.c:647 [inline] do_direct_IO fs/direct-io.c:935 [inline] __blockdev_direct_IO+0x1628/0x32e0 fs/direct-io.c:1248 ocfs2_direct_IO+0x235/0x2a0 fs/ocfs2/aops.c:2488 generic_file_direct_write+0x1c9/0x3e0 mm/filemap.c:3952 __generic_file_write_iter+0x11b/0x230 mm/filemap.c:4108 ocfs2_file_write_iter+0x1724/0x1ef0 fs/ocfs2/file.c:2468 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x747/0xc50 fs/read_write.c:860 iter_file_splice_write+0x6b6/0xcf0 fs/splice.c:736 do_splice_from fs/splice.c:933 [inline] direct_splice_actor+0xe8/0x130 fs/splice.c:1142 splice_direct_to_actor+0x30b/0x8e0 fs/splice.c:1088 do_splice_direct+0x1d5/0x2f0 fs/splice.c:1194 do_sendfile+0x52b/0xe80 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64+0x145/0x1a0 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f494819f559 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:00007f4948ff7028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f4948425fa0 RCX: 00007f494819f559 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 RBP: 00007f4948236b20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000fffe7f R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4948426038 R14: 00007f4948425fa0 R15: 00007ffd7ea01778 syz.2.80 (6237) used greatest stack depth: 18072 bytes left