Warning: Permanently added '10.128.1.7' (ED25519) to the list of known hosts. 2026/05/09 00:21:24 parsed 1 programs [ 84.141199][ T5615] cgroup: Unknown subsys name 'net' [ 84.360692][ T5615] cgroup: Unknown subsys name 'cpuset' [ 84.427103][ T5615] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 86.150615][ T5615] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 86.711975][ T10] cfg80211: failed to load regulatory.db [ 89.430544][ T3434] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.430568][ T3434] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.484432][ T163] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.484465][ T163] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 93.193929][ T59] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 93.195897][ T59] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 93.198741][ T59] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 93.200362][ T59] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 93.201990][ T59] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 94.351372][ T5683] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.352547][ T5683] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.352637][ T5683] bridge_slave_0: entered allmulticast mode [ 94.354495][ T5683] bridge_slave_0: entered promiscuous mode [ 94.369083][ T5683] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.369201][ T5683] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.369356][ T5683] bridge_slave_1: entered allmulticast mode [ 94.374455][ T5683] bridge_slave_1: entered promiscuous mode [ 94.448674][ T5683] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 94.455630][ T5683] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 94.496093][ T5683] team0: Port device team_slave_0 added [ 94.500607][ T5683] team0: Port device team_slave_1 added [ 94.528967][ T5683] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 94.528977][ T5683] 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 1532 would solve the problem. [ 94.528990][ T5683] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 94.531297][ T5683] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 94.531323][ T5683] 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 1532 would solve the problem. [ 94.531336][ T5683] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 94.603950][ T5683] hsr_slave_0: entered promiscuous mode [ 94.605340][ T5683] hsr_slave_1: entered promiscuous mode [ 94.825527][ T5683] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 94.871642][ T5683] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 94.875162][ T5683] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 94.910323][ T5683] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 94.915601][ T5683] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 94.952132][ T5683] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 94.953923][ T5683] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 95.001704][ T5683] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 95.038802][ T5683] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.039017][ T5683] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.039700][ T5683] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.039780][ T5683] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.143425][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 95.176906][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 95.366257][ T5683] 8021q: adding VLAN 0 to HW filter on device bond0 [ 95.396227][ T5683] 8021q: adding VLAN 0 to HW filter on device team0 [ 95.411778][ T13] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.411925][ T13] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.431255][ T1435] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.431453][ T1435] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.819668][ T5683] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 95.881464][ T5683] veth0_vlan: entered promiscuous mode [ 95.891172][ T5683] veth1_vlan: entered promiscuous mode [ 95.936168][ T5683] veth0_macvtap: entered promiscuous mode [ 95.953069][ T5683] veth1_macvtap: entered promiscuous mode [ 95.982981][ T5683] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 96.003300][ T5683] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 96.025042][ T13] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 96.038932][ T13] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 96.040830][ T13] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 96.041016][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 96.771002][ T1448] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 97.471864][ T1448] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/05/09 00:21:41 executed programs: 0 [ 98.265116][ T59] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 98.269637][ T59] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 98.273115][ T59] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 98.275457][ T59] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 98.276788][ T59] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 98.375148][ T1448] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 98.926400][ T1448] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 99.165467][ T5740] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.173901][ T5740] bridge0: port 1(bridge_slave_0) entered disabled state [ 99.174092][ T5740] bridge_slave_0: entered allmulticast mode [ 99.202642][ T5740] bridge_slave_0: entered promiscuous mode [ 99.206064][ T5740] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.206226][ T5740] bridge0: port 2(bridge_slave_1) entered disabled state [ 99.231824][ T5740] bridge_slave_1: entered allmulticast mode [ 99.234940][ T5740] bridge_slave_1: entered promiscuous mode [ 99.367049][ T5740] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 99.375625][ T5740] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 99.438088][ T5740] team0: Port device team_slave_0 added [ 99.510945][ T5740] team0: Port device team_slave_1 added [ 99.567982][ T5740] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 99.567997][ T5740] 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 1532 would solve the problem. [ 99.568019][ T5740] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 99.574002][ T5740] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 99.574015][ T5740] 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 1532 would solve the problem. [ 99.574035][ T5740] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 99.739245][ T5740] hsr_slave_0: entered promiscuous mode [ 99.739988][ T5740] hsr_slave_1: entered promiscuous mode [ 99.740580][ T5740] debugfs: 'hsr0' already exists in 'hsr' [ 99.740645][ T5740] Cannot create hsr debugfs directory [ 100.071501][ T1448] bridge_slave_1: left allmulticast mode [ 100.071573][ T1448] bridge_slave_1: left promiscuous mode [ 100.071964][ T1448] bridge0: port 2(bridge_slave_1) entered disabled state [ 100.157734][ T1448] bridge_slave_0: left allmulticast mode [ 100.157758][ T1448] bridge_slave_0: left promiscuous mode [ 100.157902][ T1448] bridge0: port 1(bridge_slave_0) entered disabled state [ 100.308450][ T59] Bluetooth: hci0: command tx timeout [ 100.828285][ T1448] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 100.907457][ T1448] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 100.930965][ T1448] bond0 (unregistering): Released all slaves [ 101.267285][ T1448] hsr_slave_0: left promiscuous mode [ 101.306684][ T1448] hsr_slave_1: left promiscuous mode [ 101.308022][ T1448] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 101.308097][ T1448] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 101.368470][ T1448] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 101.368496][ T1448] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 101.462745][ T1448] veth1_macvtap: left promiscuous mode [ 101.462910][ T1448] veth0_macvtap: left promiscuous mode [ 101.463055][ T1448] veth1_vlan: left promiscuous mode [ 101.463211][ T1448] veth0_vlan: left promiscuous mode [ 102.097028][ T1448] team0 (unregistering): Port device team_slave_1 removed [ 102.157113][ T1448] team0 (unregistering): Port device team_slave_0 removed [ 102.333929][ T5263] 8021q: adding VLAN 0 to HW filter on device eth1 [ 102.387285][ T59] Bluetooth: hci0: command tx timeout [ 102.828387][ T5263] 8021q: adding VLAN 0 to HW filter on device eth2 [ 104.192768][ T5740] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 104.249438][ T5740] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 104.250817][ T5740] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 104.314289][ T5740] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 104.325531][ T5740] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 104.364643][ T5740] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 104.366342][ T5740] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 104.391156][ T5740] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 104.468208][ T59] Bluetooth: hci0: command tx timeout [ 104.519901][ T5740] 8021q: adding VLAN 0 to HW filter on device bond0 [ 104.556209][ T5740] 8021q: adding VLAN 0 to HW filter on device team0 [ 104.579966][ T3434] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.580097][ T3434] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.602900][ T163] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.603000][ T163] bridge0: port 2(bridge_slave_1) entered forwarding state [ 105.036260][ T5740] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 105.093161][ T5740] veth0_vlan: entered promiscuous mode [ 105.104920][ T5740] veth1_vlan: entered promiscuous mode [ 105.146082][ T5740] veth0_macvtap: entered promiscuous mode [ 105.158654][ T5740] veth1_macvtap: entered promiscuous mode [ 105.178754][ T5740] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 105.203536][ T5740] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 105.220598][ T13] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.223120][ T13] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.223581][ T13] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.223622][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.542133][ T3434] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 105.542153][ T3434] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 105.593159][ T3434] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 105.593177][ T3434] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2026/05/09 00:21:48 executed programs: 2 [ 105.940749][ T5842] loop0: detected capacity change from 0 to 32768 [ 106.555685][ T5843] loop0: detected capacity change from 0 to 32768 [ 106.556815][ T59] Bluetooth: hci0: command tx timeout [ 107.090543][ T5844] loop0: detected capacity change from 0 to 32768 [ 107.744871][ T5845] loop0: detected capacity change from 0 to 32768 [ 108.163724][ T5846] loop0: detected capacity change from 0 to 32768 [ 108.580276][ T5847] loop0: detected capacity change from 0 to 32768 [ 108.964333][ T5848] loop0: detected capacity change from 0 to 32768 [ 109.403735][ T5849] loop0: detected capacity change from 0 to 32768 [ 109.786018][ T5850] loop0: detected capacity change from 0 to 32768 [ 110.175511][ T5851] loop0: detected capacity change from 0 to 32768 [ 111.176148][ T5853] set_capacity_and_notify: 1 callbacks suppressed [ 111.176159][ T5853] loop0: detected capacity change from 0 to 32768 2026/05/09 00:21:54 executed programs: 14 [ 111.577913][ T5854] loop0: detected capacity change from 0 to 32768 [ 111.934174][ T5855] loop0: detected capacity change from 0 to 32768 [ 112.834559][ T5856] loop0: detected capacity change from 0 to 32768 [ 113.459322][ T5857] loop0: detected capacity change from 0 to 32768 [ 113.840646][ T5858] loop0: detected capacity change from 0 to 32768 [ 114.713670][ T5859] loop0: detected capacity change from 0 to 32768 [ 115.321342][ T5863] loop0: detected capacity change from 0 to 32768 [ 115.645973][ T5864] loop0: detected capacity change from 0 to 32768 [ 115.992687][ T5865] loop0: detected capacity change from 0 to 32768 [ 116.631922][ T5867] loop0: detected capacity change from 0 to 32768 2026/05/09 00:21:59 executed programs: 24 [ 117.241747][ T5870] loop0: detected capacity change from 0 to 32768 [ 117.852962][ T5871] loop0: detected capacity change from 0 to 32768 [ 118.200416][ T5872] loop0: detected capacity change from 0 to 32768 [ 118.570090][ T5873] loop0: detected capacity change from 0 to 32768 [ 119.169704][ T5874] loop0: detected capacity change from 0 to 32768 [ 119.774208][ T5875] loop0: detected capacity change from 0 to 32768 [ 120.357135][ T5876] loop0: detected capacity change from 0 to 32768 [ 120.719755][ T5877] loop0: detected capacity change from 0 to 32768 [ 121.311742][ T5878] loop0: detected capacity change from 0 to 32768 [ 121.914792][ T5879] loop0: detected capacity change from 0 to 32768 2026/05/09 00:22:05 executed programs: 34 [ 122.809210][ T5880] loop0: detected capacity change from 0 to 32768 [ 123.174490][ T5881] loop0: detected capacity change from 0 to 32768 [ 123.530928][ T5882] loop0: detected capacity change from 0 to 32768 [ 123.608576][ C0] ================================================================== [ 123.608591][ C0] BUG: KASAN: slab-use-after-free in lbmIODone+0x1312/0x16c0 [ 123.608632][ C0] Read of size 4 at addr ffff88802cc8f208 by task syz-execprog/5613 [ 123.608649][ C0] [ 123.608672][ C0] CPU: 0 UID: 0 PID: 5613 Comm: syz-execprog Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 123.608695][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 123.608712][ C0] Call Trace: [ 123.608720][ C0] [ 123.608728][ C0] dump_stack_lvl+0xe8/0x150 [ 123.608751][ C0] print_address_description+0x55/0x1e0 [ 123.608771][ C0] ? lbmIODone+0x1312/0x16c0 [ 123.608792][ C0] print_report+0x58/0x70 [ 123.608809][ C0] kasan_report+0x117/0x150 [ 123.608834][ C0] ? lbmIODone+0x1312/0x16c0 [ 123.608860][ C0] lbmIODone+0x1312/0x16c0 [ 123.608882][ C0] ? blkg_put+0x22/0x240 [ 123.608898][ C0] ? blkg_put+0x22/0x240 [ 123.608916][ C0] ? blkg_put+0x18d/0x240 [ 123.608934][ C0] ? bio_endio+0x989/0x9d0 [ 123.608955][ C0] blk_update_request+0x57e/0xe60 [ 123.608981][ C0] blk_mq_end_request+0x3e/0x70 [ 123.609003][ C0] blk_done_softirq+0x10a/0x160 [ 123.609024][ C0] handle_softirqs+0x1de/0x6d0 [ 123.609052][ C0] __local_bh_enable_ip+0x170/0x2b0 [ 123.609073][ C0] tcp_recvmsg+0xdb/0x530 [ 123.609102][ C0] ? __pfx_tcp_recvmsg+0x10/0x10 [ 123.609128][ C0] ? inet6_recvmsg+0xb4/0x490 [ 123.609147][ C0] ? bpf_lsm_socket_recvmsg+0x9/0x20 [ 123.609166][ C0] ? security_socket_recvmsg+0x7e/0x2c0 [ 123.609189][ C0] ? __pfx_inet6_recvmsg+0x10/0x10 [ 123.609209][ C0] sock_recvmsg+0xfa/0x1b0 [ 123.609228][ C0] sock_read_iter+0x25a/0x330 [ 123.609253][ C0] ? __pfx_sock_read_iter+0x10/0x10 [ 123.609288][ C0] vfs_read+0x58b/0xa80 [ 123.609312][ C0] ? __pfx_vfs_read+0x10/0x10 [ 123.609335][ C0] ? __fget_files+0x2a/0x420 [ 123.609357][ C0] ksys_read+0x156/0x270 [ 123.609378][ C0] ? __pfx_ksys_read+0x10/0x10 [ 123.609407][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 123.609427][ C0] do_syscall_64+0x15f/0xf80 [ 123.609450][ C0] ? clear_bhb_loop+0x40/0x90 [ 123.609471][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 123.609491][ C0] RIP: 0033:0x40d3ce [ 123.609520][ C0] Code: ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48 [ 123.609534][ C0] RSP: 002b:00003b37da74d3d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 123.609559][ C0] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000040d3ce [ 123.609572][ C0] RDX: 0000000001e4e7fc RSI: 00003b37dbb80000 RDI: 0000000000000006 [ 123.609585][ C0] RBP: 00003b37da74d418 R08: 0000000000000000 R09: 0000000000000000 [ 123.609598][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 00003b37da739d30 [ 123.609611][ C0] R13: 0000000000000001 R14: 00003b37da6aad20 R15: 0000000000000001 [ 123.609630][ C0] [ 123.609637][ C0] [ 123.609644][ C0] Allocated by task 5882: [ 123.609653][ C0] kasan_save_track+0x3e/0x80 [ 123.609669][ C0] __kasan_kmalloc+0x93/0xb0 [ 123.609684][ C0] __kmalloc_cache_noprof+0x3a6/0x690 [ 123.609707][ C0] lmLogInit+0x3e5/0x1a00 [ 123.609725][ C0] lmLogOpen+0x4e1/0xfa0 [ 123.609744][ C0] jfs_mount_rw+0xee/0x670 [ 123.609763][ C0] jfs_fill_super+0x754/0xd80 [ 123.609778][ C0] get_tree_bdev_flags+0x431/0x4f0 [ 123.609796][ C0] vfs_get_tree+0x92/0x2a0 [ 123.609808][ C0] do_new_mount+0x341/0xd30 [ 123.609824][ C0] __se_sys_mount+0x31d/0x420 [ 123.609839][ C0] do_syscall_64+0x15f/0xf80 [ 123.609853][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 123.609864][ C0] [ 123.609867][ C0] Freed by task 5740: [ 123.609874][ C0] kasan_save_track+0x3e/0x80 [ 123.609884][ C0] kasan_save_free_info+0x46/0x50 [ 123.609901][ C0] __kasan_slab_free+0x5c/0x80 [ 123.609912][ C0] kfree+0x1c5/0x6c0 [ 123.609923][ C0] lmLogShutdown+0x456/0x850 [ 123.609938][ C0] lmLogClose+0x28a/0x520 [ 123.609953][ C0] jfs_umount+0x2fb/0x3d0 [ 123.609975][ C0] jfs_put_super+0x8c/0x190 [ 123.609988][ C0] generic_shutdown_super+0x13d/0x2d0 [ 123.610000][ C0] kill_block_super+0x44/0x90 [ 123.610013][ C0] deactivate_locked_super+0xbc/0x130 [ 123.610023][ C0] cleanup_mnt+0x437/0x4d0 [ 123.610035][ C0] task_work_run+0x1d9/0x270 [ 123.610051][ C0] exit_to_user_mode_loop+0xed/0x480 [ 123.610065][ C0] do_syscall_64+0x33e/0xf80 [ 123.610079][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 123.610091][ C0] [ 123.610094][ C0] The buggy address belongs to the object at ffff88802cc8f200 [ 123.610094][ C0] which belongs to the cache kmalloc-256 of size 256 [ 123.610107][ C0] The buggy address is located 8 bytes inside of [ 123.610107][ C0] freed 256-byte region [ffff88802cc8f200, ffff88802cc8f300) [ 123.610123][ C0] [ 123.610126][ C0] The buggy address belongs to the physical page: [ 123.610144][ C0] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2cc8e [ 123.610158][ C0] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 123.610170][ C0] flags: 0x80000000000040(head|node=0|zone=1) [ 123.610186][ C0] page_type: f5(slab) [ 123.610199][ C0] raw: 0080000000000040 ffff88801a010b40 dead000000000100 dead000000000122 [ 123.610210][ C0] raw: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000 [ 123.610222][ C0] head: 0080000000000040 ffff88801a010b40 dead000000000100 dead000000000122 [ 123.610232][ C0] head: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000 [ 123.610244][ C0] head: 0080000000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff [ 123.610255][ C0] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000002 [ 123.610262][ C0] page dumped because: kasan: bad access detected [ 123.610275][ C0] page_owner tracks the page as allocated [ 123.610280][ C0] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 33, tgid 33 (kdevtmpfs), ts 15271199401, free_ts 0 [ 123.610306][ C0] post_alloc_hook+0x231/0x280 [ 123.610322][ C0] get_page_from_freelist+0x27c8/0x2840 [ 123.610337][ C0] __alloc_frozen_pages_noprof+0x18d/0x380 [ 123.610351][ C0] allocate_slab+0x77/0x660 [ 123.610370][ C0] refill_objects+0x33c/0x3d0 [ 123.610393][ C0] __pcs_replace_empty_main+0x373/0x720 [ 123.610409][ C0] __kmalloc_noprof+0x530/0x7b0 [ 123.610421][ C0] security_inode_init_security+0x102/0x3d0 [ 123.610435][ C0] shmem_mknod+0x1fe/0x360 [ 123.610451][ C0] vfs_mknod+0x44e/0x620 [ 123.610465][ C0] devtmpfs_work_loop+0x861/0xdf0 [ 123.610480][ C0] devtmpfsd+0x4d/0x50 [ 123.610494][ C0] kthread+0x388/0x470 [ 123.610510][ C0] ret_from_fork+0x514/0xb70 [ 123.610525][ C0] ret_from_fork_asm+0x1a/0x30 [ 123.610542][ C0] page_owner free stack trace missing [ 123.610548][ C0] [ 123.610551][ C0] Memory state around the buggy address: [ 123.610558][ C0] ffff88802cc8f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 123.610567][ C0] ffff88802cc8f180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 123.610575][ C0] >ffff88802cc8f200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 123.610581][ C0] ^ [ 123.610589][ C0] ffff88802cc8f280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 123.610597][ C0] ffff88802cc8f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 123.610604][ C0] ================================================================== [ 123.610649][ C0] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 123.610662][ C0] CPU: 0 UID: 0 PID: 5613 Comm: syz-execprog Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 123.610679][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 123.610688][ C0] Call Trace: [ 123.610693][ C0] [ 123.610699][ C0] vpanic+0x56c/0xa60 [ 123.610718][ C0] ? __pfx_vpanic+0x10/0x10 [ 123.610733][ C0] ? __pfx___schedule+0x10/0x10 [ 123.610751][ C0] panic+0xc5/0xd0 [ 123.610767][ C0] ? __pfx_panic+0x10/0x10 [ 123.610783][ C0] ? preempt_schedule_thunk+0x16/0x30 [ 123.610807][ C0] ? lbmIODone+0x1312/0x16c0 [ 123.610825][ C0] check_panic_on_warn+0x89/0xb0 [ 123.610844][ C0] ? lbmIODone+0x1312/0x16c0 [ 123.610860][ C0] end_report+0x73/0x170 [ 123.610879][ C0] ? lbmIODone+0x1312/0x16c0 [ 123.610894][ C0] kasan_report+0x128/0x150 [ 123.610909][ C0] ? lbmIODone+0x1312/0x16c0 [ 123.610927][ C0] lbmIODone+0x1312/0x16c0 [ 123.610943][ C0] ? blkg_put+0x22/0x240 [ 123.610956][ C0] ? blkg_put+0x22/0x240 [ 123.610969][ C0] ? blkg_put+0x18d/0x240 [ 123.610982][ C0] ? bio_endio+0x989/0x9d0 [ 123.611000][ C0] blk_update_request+0x57e/0xe60 [ 123.611023][ C0] blk_mq_end_request+0x3e/0x70 [ 123.611039][ C0] blk_done_softirq+0x10a/0x160 [ 123.611054][ C0] handle_softirqs+0x1de/0x6d0 [ 123.611071][ C0] __local_bh_enable_ip+0x170/0x2b0 [ 123.611086][ C0] tcp_recvmsg+0xdb/0x530 [ 123.611107][ C0] ? __pfx_tcp_recvmsg+0x10/0x10 [ 123.611128][ C0] ? inet6_recvmsg+0xb4/0x490 [ 123.611145][ C0] ? bpf_lsm_socket_recvmsg+0x9/0x20 [ 123.611160][ C0] ? security_socket_recvmsg+0x7e/0x2c0 [ 123.611177][ C0] ? __pfx_inet6_recvmsg+0x10/0x10 [ 123.611192][ C0] sock_recvmsg+0xfa/0x1b0 [ 123.611206][ C0] sock_read_iter+0x25a/0x330 [ 123.611226][ C0] ? __pfx_sock_read_iter+0x10/0x10 [ 123.611252][ C0] vfs_read+0x58b/0xa80 [ 123.611270][ C0] ? __pfx_vfs_read+0x10/0x10 [ 123.611288][ C0] ? __fget_files+0x2a/0x420 [ 123.611305][ C0] ksys_read+0x156/0x270 [ 123.611321][ C0] ? __pfx_ksys_read+0x10/0x10 [ 123.611337][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 123.611351][ C0] do_syscall_64+0x15f/0xf80 [ 123.611371][ C0] ? clear_bhb_loop+0x40/0x90 [ 123.611394][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 123.611408][ C0] RIP: 0033:0x40d3ce [ 123.611419][ C0] Code: ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48 [ 123.611430][ C0] RSP: 002b:00003b37da74d3d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 123.611445][ C0] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000040d3ce [ 123.611455][ C0] RDX: 0000000001e4e7fc RSI: 00003b37dbb80000 RDI: 0000000000000006 [ 123.611464][ C0] RBP: 00003b37da74d418 R08: 0000000000000000 R09: 0000000000000000 [ 123.611473][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 00003b37da739d30 [ 123.611483][ C0] R13: 0000000000000001 R14: 00003b37da6aad20 R15: 0000000000000001 [ 123.611499][ C0] [ 123.612704][ C0] Kernel Offset: disabled