[ 76.903652][ T47] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.22' (ED25519) to the list of known hosts. 2024/07/29 01:59:58 ignoring optional flag "sandboxArg"="0" 2024/07/29 01:59:59 parsed 1 programs 2024/07/29 02:00:00 executed programs: 0 [ 82.124221][ T5524] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 82.177999][ T55] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 82.186470][ T55] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 82.194449][ T55] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 82.202794][ T55] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 82.211278][ T55] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 82.219229][ T55] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 82.346391][ T5529] chnl_net:caif_netlink_parms(): no params data found [ 82.409948][ T5529] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.417832][ T5529] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.425202][ T5529] bridge_slave_0: entered allmulticast mode [ 82.432652][ T5529] bridge_slave_0: entered promiscuous mode [ 82.440862][ T5529] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.448986][ T5529] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.456488][ T5529] bridge_slave_1: entered allmulticast mode [ 82.464231][ T5529] bridge_slave_1: entered promiscuous mode [ 82.491094][ T5529] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 82.502698][ T5529] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 82.529868][ T5529] team0: Port device team_slave_0 added [ 82.539006][ T5529] team0: Port device team_slave_1 added [ 82.561173][ T5529] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 82.569013][ T5529] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 82.595732][ T5529] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 82.608325][ T5529] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 82.615296][ T5529] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 82.642627][ T5529] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 82.680061][ T5529] hsr_slave_0: entered promiscuous mode [ 82.686844][ T5529] hsr_slave_1: entered promiscuous mode [ 83.329842][ T5529] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.348501][ T5529] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.359711][ T5529] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.371559][ T5529] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.495208][ T5529] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.524396][ T5529] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.540313][ T1854] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.547532][ T1854] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.575632][ T47] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.582891][ T47] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.791126][ T5529] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.850245][ T5529] veth0_vlan: entered promiscuous mode [ 83.865451][ T5529] veth1_vlan: entered promiscuous mode [ 83.908869][ T5529] veth0_macvtap: entered promiscuous mode [ 83.920742][ T5529] veth1_macvtap: entered promiscuous mode [ 83.948988][ T5529] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.969144][ T5529] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.984443][ T5529] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.995002][ T5529] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.005318][ T5529] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.015959][ T5529] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.108455][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.116431][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.152135][ T2469] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.160206][ T2469] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.258256][ T55] Bluetooth: hci0: command tx timeout [ 84.715860][ T5599] loop0: detected capacity change from 0 to 32768 [ 84.754035][ T5599] gfs2: fsid=__&+[$!: Trying to join cluster "lock_nolock", "__&+[$!" [ 84.781823][ T5599] gfs2: fsid=__&+[$!: Now mounting FS (format 1801)... [ 84.809717][ T5599] gfs2: fsid=__&+[$!.0: journal 0 mapped with 16 extents in 0ms [ 84.822727][ T9] gfs2: fsid=__&+[$!.0: jid=0, already locked for use [ 84.831815][ T9] gfs2: fsid=__&+[$!.0: jid=0: Looking at journal... [ 84.911637][ T9] gfs2: fsid=__&+[$!.0: jid=0: Journal head lookup took 79ms [ 84.923310][ T9] gfs2: fsid=__&+[$!.0: jid=0: Done [ 84.932175][ T5599] gfs2: fsid=__&+[$!.0: first mount done, others may mount [ 86.347352][ T55] Bluetooth: hci0: command tx timeout [ 88.417347][ T55] Bluetooth: hci0: command tx timeout [ 90.496999][ T55] Bluetooth: hci0: command tx timeout [ 133.219874][ T1266] ieee802154 phy0 wpan0: encryption failed: -22 [ 133.226183][ T1266] ieee802154 phy1 wpan1: encryption failed: -22 [ 194.659406][ T1266] ieee802154 phy0 wpan0: encryption failed: -22 [ 194.665763][ T1266] ieee802154 phy1 wpan1: encryption failed: -22 [ 206.976995][ T5232] Bluetooth: hci0: command 0x0406 tx timeout [ 239.458175][ T30] INFO: task syz-executor.0:5529 blocked for more than 143 seconds. [ 239.466327][ T30] Not tainted 6.10.0-next-20240726-syzkaller-13921-g668d33c9ff92 #0 [ 239.476448][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 239.485226][ T30] task:syz-executor.0 state:D stack:20448 pid:5529 tgid:5529 ppid:1 flags:0x00000006 [ 239.495556][ T30] Call Trace: [ 239.500172][ T30] [ 239.503144][ T30] __schedule+0x1800/0x4a60 [ 239.507894][ T30] ? __pfx___schedule+0x10/0x10 [ 239.512751][ T30] ? __pfx_lock_release+0x10/0x10 [ 239.518408][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 239.524103][ T30] ? schedule+0x90/0x320 [ 239.528496][ T30] schedule+0x14b/0x320 [ 239.532671][ T30] bit_wait+0x12/0xd0 [ 239.536652][ T30] __wait_on_bit+0xb0/0x2f0 [ 239.541237][ T30] ? __pfx_bit_wait+0x10/0x10 [ 239.546104][ T30] out_of_line_wait_on_bit+0x1d5/0x260 [ 239.551960][ T30] ? __pfx_bit_wait+0x10/0x10 [ 239.556769][ T30] ? __pfx_out_of_line_wait_on_bit+0x10/0x10 [ 239.562779][ T30] ? __pfx_wake_bit_function+0x10/0x10 [ 239.568393][ T30] gfs2_glock_wait+0xc7/0x2b0 [ 239.573162][ T30] __gfs2_lookup+0x11b/0x280 [ 239.578105][ T30] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 239.584286][ T30] ? __pfx___gfs2_lookup+0x10/0x10 [ 239.589595][ T30] ? __lookup_slow+0x28c/0x3f0 [ 239.594402][ T30] ? __init_waitqueue_head+0xae/0x150 [ 239.600050][ T30] __lookup_slow+0x28c/0x3f0 [ 239.604666][ T30] ? __pfx___lookup_slow+0x10/0x10 [ 239.609886][ T30] ? __d_lookup+0x64/0x7b0 [ 239.614337][ T30] ? gfs2_dhash+0x5c/0xb0 [ 239.618855][ T30] lookup_slow+0x53/0x70 [ 239.623304][ T30] walk_component+0x2e1/0x410 [ 239.628472][ T30] path_lookupat+0x16f/0x450 [ 239.633197][ T30] filename_lookup+0x256/0x610 [ 239.638374][ T30] ? __pfx_filename_lookup+0x10/0x10 [ 239.643963][ T30] ? strncpy_from_user+0x1a4/0x2e0 [ 239.649239][ T30] ? getname_flags+0x1e3/0x540 [ 239.654120][ T30] user_path_at+0x3a/0x60 [ 239.658520][ T30] __x64_sys_umount+0xf1/0x170 [ 239.663407][ T30] ? __pfx___x64_sys_umount+0x10/0x10 [ 239.668827][ T30] ? do_syscall_64+0x100/0x230 [ 239.673729][ T30] ? do_syscall_64+0xb6/0x230 [ 239.678564][ T30] do_syscall_64+0xf3/0x230 [ 239.683270][ T30] ? clear_bhb_loop+0x35/0x90 [ 239.688037][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 239.694096][ T30] RIP: 0033:0x7f7337a7f197 [ 239.698769][ T30] RSP: 002b:00007ffe5f064ab8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 239.707234][ T30] RAX: ffffffffffffffda RBX: 00007f7337ac93b9 RCX: 00007f7337a7f197 [ 239.715232][ T30] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe5f064b70 [ 239.723304][ T30] RBP: 00007ffe5f064b70 R08: 0000000000000000 R09: 0000000000000000 [ 239.731329][ T30] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe5f065c60 [ 239.739445][ T30] R13: 00007f7337ac93b9 R14: 0000555557376430 R15: 0000000000000002 [ 239.747487][ T30] [ 239.750538][ T30] [ 239.750538][ T30] Showing all locks held in the system: [ 239.758389][ T30] 1 lock held by khungtaskd/30: [ 239.763255][ T30] #0: ffffffff8e937a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 239.773195][ T30] 2 locks held by getty/4981: [ 239.777940][ T30] #0: ffff88802ae8d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 239.787807][ T30] #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 239.797985][ T30] 1 lock held by syz-executor.0/5529: [ 239.803361][ T30] #0: ffff888011ea87f8 (&type->i_mutex_dir_key#8){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 [ 239.813431][ T30] [ 239.815769][ T30] ============================================= [ 239.815769][ T30] [ 239.824217][ T30] NMI backtrace for cpu 0 [ 239.828569][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-next-20240726-syzkaller-13921-g668d33c9ff92 #0 [ 239.840379][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 239.850428][ T30] Call Trace: [ 239.853692][ T30] [ 239.856606][ T30] dump_stack_lvl+0x241/0x360 [ 239.861284][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 239.866491][ T30] ? __pfx__printk+0x10/0x10 [ 239.871079][ T30] ? __pfx_vprintk_emit+0x10/0x10 [ 239.876277][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 239.881305][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 239.886840][ T30] ? _printk+0xd5/0x120 [ 239.890994][ T30] ? __pfx__printk+0x10/0x10 [ 239.895663][ T30] ? __wake_up_klogd+0x109/0x140 [ 239.900600][ T30] ? __pfx__printk+0x10/0x10 [ 239.905191][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 239.911177][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 239.917153][ T30] watchdog+0xff4/0x1040 [ 239.921393][ T30] ? watchdog+0x1ea/0x1040 [ 239.925819][ T30] ? __pfx_watchdog+0x10/0x10 [ 239.930634][ T30] kthread+0x2f0/0x390 [ 239.934819][ T30] ? __pfx_watchdog+0x10/0x10 [ 239.939576][ T30] ? __pfx_kthread+0x10/0x10 [ 239.944250][ T30] ret_from_fork+0x4b/0x80 [ 239.948699][ T30] ? __pfx_kthread+0x10/0x10 [ 239.953629][ T30] ret_from_fork_asm+0x1a/0x30 [ 239.958408][ T30] [ 239.961565][ T30] Sending NMI from CPU 0 to CPUs 1: [ 239.966864][ C1] NMI backtrace for cpu 1 [ 239.966878][ C1] CPU: 1 UID: 0 PID: 4669 Comm: klogd Not tainted 6.10.0-next-20240726-syzkaller-13921-g668d33c9ff92 #0 [ 239.966898][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 239.966907][ C1] RIP: 0010:lock_acquire+0x2a9/0x550 [ 239.966935][ C1] Code: 66 43 c7 44 25 15 00 00 43 c6 44 25 17 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 00 01 00 00 0f 85 95 02 00 00 48 8d 65 d8 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 65 8b 05 02 d9 92 7e 85 [ 239.966952][ C1] RSP: 0018:ffffc9000301f698 EFLAGS: 00000246 [ 239.966967][ C1] RAX: ea3d3fe03ba0fe00 RBX: ffff88807d8bbc2c RCX: ea3d3fe03ba0fe00 [ 239.966978][ C1] RDX: dffffc0000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c607cc0 [ 239.966990][ C1] RBP: ffffc9000301f6b8 R08: ffffffff93737817 R09: 1ffffffff26e6f02 [ 239.967001][ C1] R10: dffffc0000000000 R11: fffffbfff26e6f03 R12: 1ffff92000603eb4 [ 239.967013][ C1] R13: dffffc0000000000 R14: ffffc9000301f5c0 R15: 0000000000000246 [ 239.967024][ C1] FS: 00007f8b5225d380(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 [ 239.967038][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 239.967049][ C1] CR2: 0000559a6248b600 CR3: 000000007d4c0000 CR4: 00000000003506f0 [ 239.967062][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 239.967072][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 239.967081][ C1] Call Trace: [ 239.967087][ C1] [ 239.967094][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 239.967112][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 239.967134][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 239.967151][ C1] ? nmi_handle+0x2a/0x5a0 [ 239.967174][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 239.967193][ C1] ? nmi_handle+0x14f/0x5a0 [ 239.967207][ C1] ? nmi_handle+0x2a/0x5a0 [ 239.967229][ C1] ? lock_acquire+0x2a9/0x550 [ 239.967248][ C1] ? default_do_nmi+0x63/0x160 [ 239.967267][ C1] ? exc_nmi+0x123/0x1f0 [ 239.967284][ C1] ? end_repeat_nmi+0xf/0x53 [ 239.967307][ C1] ? lock_acquire+0x2a9/0x550 [ 239.967327][ C1] ? lock_acquire+0x2a9/0x550 [ 239.967348][ C1] ? lock_acquire+0x2a9/0x550 [ 239.967369][ C1] [ 239.967374][ C1] [ 239.967380][ C1] fs_reclaim_acquire+0x88/0x140 [ 239.967396][ C1] ? __kmalloc_node_track_caller_noprof+0xab/0x440 [ 239.967417][ C1] __kmalloc_node_track_caller_noprof+0xab/0x440 [ 239.967436][ C1] ? __alloc_skb+0x1f3/0x440 [ 239.967487][ C1] ? __alloc_skb+0x1f3/0x440 [ 239.967502][ C1] kmalloc_reserve+0x111/0x2a0 [ 239.967520][ C1] __alloc_skb+0x1f3/0x440 [ 239.967535][ C1] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 239.967559][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 239.967579][ C1] alloc_skb_with_frags+0xc3/0x770 [ 239.967604][ C1] sock_alloc_send_pskb+0x91a/0xa60 [ 239.967633][ C1] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 239.967656][ C1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 239.967678][ C1] unix_dgram_sendmsg+0x6d3/0x1f80 [ 239.967730][ C1] ? aa_sk_perm+0x96d/0xab0 [ 239.967788][ C1] ? __pfx_unix_dgram_sendmsg+0x10/0x10 [ 239.967819][ C1] ? aa_sock_msg_perm+0x91/0x160 [ 239.967853][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 239.967867][ C1] ? security_socket_sendmsg+0x87/0xb0 [ 239.967898][ C1] ? __pfx_unix_dgram_sendmsg+0x10/0x10 [ 239.967919][ C1] __sock_sendmsg+0x221/0x270 [ 239.967942][ C1] __sys_sendto+0x3a4/0x4f0 [ 239.967961][ C1] ? __pfx___sys_sendto+0x10/0x10 [ 239.967989][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 239.968012][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 239.968035][ C1] __x64_sys_sendto+0xde/0x100 [ 239.968054][ C1] do_syscall_64+0xf3/0x230 [ 239.968075][ C1] ? clear_bhb_loop+0x35/0x90 [ 239.968094][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 239.968110][ C1] RIP: 0033:0x7f8b523bf9b5 [ 239.968122][ C1] Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83 [ 239.968134][ C1] RSP: 002b:00007ffca70e6c48 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 239.968149][ C1] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f8b523bf9b5 [ 239.968160][ C1] RDX: 000000000000004c RSI: 000055b1be5c42d0 RDI: 0000000000000003 [ 239.968170][ C1] RBP: 000055b1be5bf910 R08: 0000000000000000 R09: 0000000000000000 [ 239.968180][ C1] R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013 [ 239.968190][ C1] R13: 00007f8b5254d212 R14: 00007ffca70e6d48 R15: 0000000000000000 [ 239.968208][ C1] [ 239.968867][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 240.419565][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-next-20240726-syzkaller-13921-g668d33c9ff92 #0 [ 240.430954][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 240.441094][ T30] Call Trace: [ 240.444368][ T30] [ 240.447295][ T30] dump_stack_lvl+0x241/0x360 [ 240.451977][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 240.457177][ T30] ? __pfx__printk+0x10/0x10 [ 240.461764][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 240.467754][ T30] ? vscnprintf+0x5d/0x90 [ 240.472169][ T30] panic+0x349/0x870 [ 240.476089][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 240.482233][ T30] ? __pfx_panic+0x10/0x10 [ 240.486640][ T30] ? tick_nohz_tick_stopped+0x82/0xb0 [ 240.492005][ T30] ? __irq_work_queue_local+0x137/0x410 [ 240.497651][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 240.503018][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 240.509164][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 240.515312][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 240.521542][ T30] watchdog+0x1033/0x1040 [ 240.525865][ T30] ? watchdog+0x1ea/0x1040 [ 240.530274][ T30] ? __pfx_watchdog+0x10/0x10 [ 240.534937][ T30] kthread+0x2f0/0x390 [ 240.539090][ T30] ? __pfx_watchdog+0x10/0x10 [ 240.543845][ T30] ? __pfx_kthread+0x10/0x10 [ 240.548522][ T30] ret_from_fork+0x4b/0x80 [ 240.552957][ T30] ? __pfx_kthread+0x10/0x10 [ 240.557550][ T30] ret_from_fork_asm+0x1a/0x30 [ 240.562339][ T30] [ 240.565684][ T30] Kernel Offset: disabled [ 240.570105][ T30] Rebooting in 86400 seconds..