Warning: Permanently added '10.128.0.193' (ED25519) to the list of known hosts. executing program [ 38.052924][ T6517] loop0: detected capacity change from 0 to 32768 [ 38.055081][ T6517] ======================================================= [ 38.055081][ T6517] WARNING: The mand mount option has been deprecated and [ 38.055081][ T6517] and is ignored by this kernel. Remove the mand [ 38.055081][ T6517] option from the mount to silence this warning. [ 38.055081][ T6517] ======================================================= [ 38.080646][ T6517] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. [ 38.123841][ T6517] [ 38.124579][ T6517] ====================================================== [ 38.126426][ T6517] WARNING: possible circular locking dependency detected [ 38.128316][ T6517] 6.16.0-rc1-syzkaller-g39dfc971e42d #0 Not tainted [ 38.130090][ T6517] ------------------------------------------------------ [ 38.132012][ T6517] syz-executor387/6517 is trying to acquire lock: [ 38.133719][ T6517] ffff0000e340d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: __ocfs2_flush_truncate_log+0x2e8/0xf6c [ 38.137309][ T6517] [ 38.137309][ T6517] but task is already holding lock: [ 38.139283][ T6517] ffff0000e3413480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_flush_truncate_log+0x44/0x6c [ 38.142673][ T6517] [ 38.142673][ T6517] which lock already depends on the new lock. [ 38.142673][ T6517] [ 38.145546][ T6517] [ 38.145546][ T6517] the existing dependency chain (in reverse order) is: [ 38.147964][ T6517] [ 38.147964][ T6517] -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 38.150801][ T6517] down_write+0x50/0xc0 [ 38.152105][ T6517] __ocfs2_move_extents_range+0x13ec/0x2abc [ 38.153885][ T6517] ocfs2_move_extents+0x314/0x7f0 [ 38.155402][ T6517] ocfs2_ioctl_move_extents+0x424/0x5f0 [ 38.157037][ T6517] ocfs2_ioctl+0x1c4/0x738 [ 38.158433][ T6517] __arm64_sys_ioctl+0x14c/0x1c4 [ 38.159954][ T6517] invoke_syscall+0x98/0x2b8 [ 38.161315][ T6517] el0_svc_common+0x130/0x23c [ 38.162694][ T6517] do_el0_svc+0x48/0x58 [ 38.163936][ T6517] el0_svc+0x58/0x17c [ 38.165198][ T6517] el0t_64_sync_handler+0x78/0x108 [ 38.166712][ T6517] el0t_64_sync+0x198/0x19c [ 38.168057][ T6517] [ 38.168057][ T6517] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}: [ 38.170970][ T6517] __lock_acquire+0x1774/0x30a4 [ 38.172423][ T6517] lock_acquire+0x14c/0x2e0 [ 38.173801][ T6517] down_write+0x50/0xc0 [ 38.175080][ T6517] __ocfs2_flush_truncate_log+0x2e8/0xf6c [ 38.176806][ T6517] ocfs2_flush_truncate_log+0x4c/0x6c [ 38.178407][ T6517] ocfs2_sync_fs+0xf8/0x2a4 [ 38.179760][ T6517] sync_filesystem+0x1a0/0x218 [ 38.181224][ T6517] generic_shutdown_super+0x70/0x2b8 [ 38.182805][ T6517] kill_block_super+0x44/0x90 [ 38.184203][ T6517] deactivate_locked_super+0xc4/0x12c [ 38.185838][ T6517] deactivate_super+0xe0/0x100 [ 38.187269][ T6517] cleanup_mnt+0x31c/0x3ac [ 38.188629][ T6517] __cleanup_mnt+0x20/0x30 [ 38.189968][ T6517] task_work_run+0x1dc/0x260 [ 38.191379][ T6517] do_exit+0x51c/0x19fc [ 38.192635][ T6517] do_group_exit+0x194/0x22c [ 38.194018][ T6517] pid_child_should_wake+0x0/0x1dc [ 38.195595][ T6517] invoke_syscall+0x98/0x2b8 [ 38.196989][ T6517] el0_svc_common+0x130/0x23c [ 38.198377][ T6517] do_el0_svc+0x48/0x58 [ 38.199653][ T6517] el0_svc+0x58/0x17c [ 38.200869][ T6517] el0t_64_sync_handler+0x78/0x108 [ 38.202397][ T6517] el0t_64_sync+0x198/0x19c [ 38.203784][ T6517] [ 38.203784][ T6517] other info that might help us debug this: [ 38.203784][ T6517] [ 38.206555][ T6517] Possible unsafe locking scenario: [ 38.206555][ T6517] [ 38.208614][ T6517] CPU0 CPU1 [ 38.210080][ T6517] ---- ---- [ 38.211541][ T6517] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 38.213503][ T6517] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4); [ 38.216237][ T6517] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 38.218936][ T6517] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4); [ 38.220960][ T6517] [ 38.220960][ T6517] *** DEADLOCK *** [ 38.220960][ T6517] [ 38.223171][ T6517] 2 locks held by syz-executor387/6517: [ 38.224698][ T6517] #0: ffff0000ca7c80e0 (&type->s_umount_key#48){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 [ 38.227559][ T6517] #1: ffff0000e3413480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_flush_truncate_log+0x44/0x6c [ 38.231155][ T6517] [ 38.231155][ T6517] stack backtrace: [ 38.232732][ T6517] CPU: 1 UID: 0 PID: 6517 Comm: syz-executor387 Not tainted 6.16.0-rc1-syzkaller-g39dfc971e42d #0 PREEMPT [ 38.235898][ T6517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 38.238695][ T6517] Call trace: [ 38.239610][ T6517] show_stack+0x2c/0x3c (C) [ 38.240879][ T6517] __dump_stack+0x30/0x40 [ 38.242097][ T6517] dump_stack_lvl+0xd8/0x12c [ 38.243360][ T6517] dump_stack+0x1c/0x28 [ 38.244504][ T6517] print_circular_bug+0x324/0x32c [ 38.245859][ T6517] check_noncircular+0x154/0x174 [ 38.247226][ T6517] __lock_acquire+0x1774/0x30a4 [ 38.248625][ T6517] lock_acquire+0x14c/0x2e0 [ 38.249935][ T6517] down_write+0x50/0xc0 [ 38.251132][ T6517] __ocfs2_flush_truncate_log+0x2e8/0xf6c [ 38.252748][ T6517] ocfs2_flush_truncate_log+0x4c/0x6c [ 38.254228][ T6517] ocfs2_sync_fs+0xf8/0x2a4 [ 38.255516][ T6517] sync_filesystem+0x1a0/0x218 [ 38.256879][ T6517] generic_shutdown_super+0x70/0x2b8 [ 38.258333][ T6517] kill_block_super+0x44/0x90 [ 38.259625][ T6517] deactivate_locked_super+0xc4/0x12c [ 38.261111][ T6517] deactivate_super+0xe0/0x100 [ 38.262476][ T6517] cleanup_mnt+0x31c/0x3ac [ 38.263678][ T6517] __cleanup_mnt+0x20/0x30 [ 38.264874][ T6517] task_work_run+0x1dc/0x260 [ 38.266164][ T6517] do_exit+0x51c/0x19fc [ 38.267306][ T6517] do_group_exit+0x194/0x22c [ 38.268599][ T6517] pid_child_should_wake+0x0/0x1dc [ 38.270071][ T6517] invoke_syscall+0x98/0x2b8 [ 38.271339][ T6517] el0_svc_common+0x130/0x23c [ 38.272661][ T6517] do_el0_svc+0x48/0x58 [ 38.273838][ T6517] el0_svc+0x58/0x17c [ 38.274970][ T6517] el0t_64_sync_handler+0x78/0x108 [ 38.276342][ T6517] el0t_64_sync+0x198/0x19c [ 38.281100][ T6517] ocfs2: Unmounting device (7,0) on (node local)