loop0: detected capacity change from 0 to 32768 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. (syz.0.0,5323,0):ocfs2_dio_end_io:2420 ERROR: Direct IO failed, bytes = -28 ============================================ WARNING: possible recursive locking detected syzkaller #0 Not tainted -------------------------------------------- syz.0.0/5323 is trying to acquire lock: ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline] ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_try_to_free_truncate_log+0xb4/0x370 fs/ocfs2/alloc.c:6141 but task is already holding lock: ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline] ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_defrag_extent fs/ocfs2/move_extents.c:253 [inline] ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: __ocfs2_move_extents_range fs/ocfs2/move_extents.c:869 [inline] ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_move_extents+0x1539/0x3b90 fs/ocfs2/move_extents.c:944 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]); *** DEADLOCK *** May be due to missing lock nesting notation 6 locks held by syz.0.0/5323: #0: ffff88803d076450 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write_file+0x60/0x200 fs/namespace.c:538 #1: ffff8880443425a0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline] #1: ffff8880443425a0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: ocfs2_move_extents+0x1ed/0x3b90 fs/ocfs2/move_extents.c:922 #2: ffff888044342258 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_move_extents+0x3d3/0x3b90 fs/ocfs2/move_extents.c:942 #3: ffff8880365a4090 (&new->rf_sem){+.+.}-{4:4}, at: __ocfs2_lock_refcount_tree fs/ocfs2/refcounttree.c:428 [inline] #3: ffff8880365a4090 (&new->rf_sem){+.+.}-{4:4}, at: ocfs2_lock_refcount_tree+0x1ad/0x9e0 fs/ocfs2/refcounttree.c:463 #4: ffff8880441d41a0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline] #4: ffff8880441d41a0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x170/0x4850 fs/ocfs2/suballoc.c:904 #5: ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline] #5: ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_defrag_extent fs/ocfs2/move_extents.c:253 [inline] #5: ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: __ocfs2_move_extents_range fs/ocfs2/move_extents.c:869 [inline] #5: ffff8880441d09a0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_move_extents+0x1539/0x3b90 fs/ocfs2/move_extents.c:944 stack backtrace: CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_deadlock_bug+0x279/0x290 kernel/locking/lockdep.c:3041 check_deadlock kernel/locking/lockdep.c:3093 [inline] validate_chain kernel/locking/lockdep.c:3895 [inline] __lock_acquire+0x24df/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 down_write+0x96/0x200 kernel/locking/rwsem.c:1631 inode_lock include/linux/fs.h:1024 [inline] ocfs2_try_to_free_truncate_log+0xb4/0x370 fs/ocfs2/alloc.c:6141 ocfs2_reserve_clusters_with_limit+0x48d/0xc20 fs/ocfs2/suballoc.c:1302 ocfs2_defrag_extent fs/ocfs2/move_extents.c:272 [inline] __ocfs2_move_extents_range fs/ocfs2/move_extents.c:869 [inline] ocfs2_move_extents+0x18b2/0x3b90 fs/ocfs2/move_extents.c:944 ocfs2_ioctl_move_extents+0x562/0x770 fs/ocfs2/move_extents.c:1076 ocfs2_ioctl+0x195/0x7e0 fs/ocfs2/ioctl.c:958 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fad70b9ce59 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:00007fad71b40fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fad70e15fa0 RCX: 00007fad70b9ce59 RDX: 00002000000000c0 RSI: 0000000040406f06 RDI: 0000000000000004 RBP: 00007fad70c32e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fad70e16038 R14: 00007fad70e15fa0 R15: 00007fff46efda58