Warning: Permanently added '10.128.0.195' (ED25519) to the list of known hosts. 2026/08/02 08:52:28 parsed 1 programs 2026/08/02 08:52:28 serving rpc on tcp://44259 [ 82.117745][ T5611] cgroup: Unknown subsys name 'net' [ 82.379618][ T5611] cgroup: Unknown subsys name 'cpuset' [ 82.434524][ T5611] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 84.075876][ T5611] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 86.782117][ T10] cfg80211: failed to load regulatory.db [ 87.681273][ T60] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 87.683204][ T60] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 87.683888][ T60] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 87.691988][ T60] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 87.692954][ T60] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 90.468793][ T3841] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 90.468818][ T3841] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 90.540543][ T3830] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 90.540563][ T3830] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 91.212025][ T5678] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.212988][ T5678] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.213508][ T5678] bridge_slave_0: entered allmulticast mode [ 91.216928][ T5678] bridge_slave_0: entered promiscuous mode [ 91.242907][ T5678] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.243029][ T5678] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.243148][ T5678] bridge_slave_1: entered allmulticast mode [ 91.245078][ T5678] bridge_slave_1: entered promiscuous mode [ 91.300190][ T5678] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 91.302494][ T5678] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 91.345978][ T5678] team0: Port device team_slave_0 added [ 91.348274][ T5678] team0: Port device team_slave_1 added [ 91.382623][ T5678] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 91.382637][ T5678] 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. [ 91.382657][ T5678] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 91.387605][ T5678] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 91.387619][ T5678] 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. [ 91.387643][ T5678] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 91.480193][ T5678] hsr_slave_0: entered promiscuous mode [ 91.481147][ T5678] hsr_slave_1: entered promiscuous mode [ 92.036761][ T5678] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 92.079123][ T5678] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 92.082206][ T5678] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 92.107767][ T5678] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 92.111200][ T5678] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 92.151345][ T5678] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 92.152999][ T5678] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 92.192314][ T5678] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 92.598901][ T5678] 8021q: adding VLAN 0 to HW filter on device bond0 [ 92.630321][ T5678] 8021q: adding VLAN 0 to HW filter on device team0 [ 92.732047][ T3830] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.732249][ T3830] bridge0: port 1(bridge_slave_0) entered forwarding state [ 92.761751][ T3830] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.762081][ T3830] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.477921][ T5678] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 93.543345][ T5678] veth0_vlan: entered promiscuous mode [ 93.568495][ T5678] veth1_vlan: entered promiscuous mode [ 93.612763][ T5678] veth0_macvtap: entered promiscuous mode [ 93.620867][ T5678] veth1_macvtap: entered promiscuous mode [ 93.657439][ T5678] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 93.673220][ T5678] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 94.038844][ T3841] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.074637][ T3761] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.074682][ T3761] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.074716][ T3761] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.439521][ T3841] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.856930][ T3841] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.547273][ T3841] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.108576][ T3841] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.933842][ T3841] bridge_slave_1: left allmulticast mode [ 96.933942][ T3841] bridge_slave_1: left promiscuous mode [ 96.967619][ T3841] bridge0: port 2(bridge_slave_1) entered disabled state [ 97.155949][ T3841] bridge_slave_0: left allmulticast mode [ 97.155982][ T3841] bridge_slave_0: left promiscuous mode [ 97.167435][ T3841] bridge0: port 1(bridge_slave_0) entered disabled state 2026/08/02 08:52:46 executed programs: 0 [ 97.482463][ T60] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 97.498197][ T60] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 97.501709][ T60] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 97.502654][ T60] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 97.503414][ T60] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 98.084554][ T3841] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 98.164826][ T3841] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 98.186181][ T3841] bond0 (unregistering): Released all slaves [ 98.225650][ T5260] 8021q: adding VLAN 0 to HW filter on device eth1 [ 98.614142][ T3841] hsr_slave_0: left promiscuous mode [ 98.654139][ T3841] hsr_slave_1: left promiscuous mode [ 98.655337][ T3841] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 98.655418][ T3841] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 98.705950][ T3841] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 98.705976][ T3841] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 98.785330][ T3841] veth1_macvtap: left promiscuous mode [ 98.786469][ T3841] veth0_macvtap: left promiscuous mode [ 98.786648][ T3841] veth1_vlan: left promiscuous mode [ 98.786851][ T3841] veth0_vlan: left promiscuous mode [ 99.454662][ T3841] team0 (unregistering): Port device team_slave_1 removed [ 99.474618][ T3841] team0 (unregistering): Port device team_slave_0 removed [ 99.636048][ T4914] Bluetooth: hci0: command tx timeout [ 99.640858][ T5260] 8021q: adding VLAN 0 to HW filter on device eth2 [ 100.331127][ T5752] bridge0: port 1(bridge_slave_0) entered blocking state [ 100.331327][ T5752] bridge0: port 1(bridge_slave_0) entered disabled state [ 100.331481][ T5752] bridge_slave_0: entered allmulticast mode [ 100.333929][ T5752] bridge_slave_0: entered promiscuous mode [ 100.342878][ T5752] bridge0: port 2(bridge_slave_1) entered blocking state [ 100.343063][ T5752] bridge0: port 2(bridge_slave_1) entered disabled state [ 100.343508][ T5752] bridge_slave_1: entered allmulticast mode [ 100.347152][ T5752] bridge_slave_1: entered promiscuous mode [ 100.395640][ T5752] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 100.400821][ T5752] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 100.402813][ T5260] 8021q: adding VLAN 0 to HW filter on device eth3 [ 100.446160][ T5752] team0: Port device team_slave_0 added [ 100.449766][ T5752] team0: Port device team_slave_1 added [ 100.502706][ T5752] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 100.502722][ T5752] 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. [ 100.502746][ T5752] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 100.506761][ T5752] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 100.506775][ T5752] 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. [ 100.506799][ T5752] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 100.585355][ T5752] hsr_slave_0: entered promiscuous mode [ 100.587672][ T5752] hsr_slave_1: entered promiscuous mode [ 101.015972][ T5260] 8021q: adding VLAN 0 to HW filter on device eth4 [ 101.704785][ T4914] Bluetooth: hci0: command tx timeout [ 103.104268][ T5752] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 103.151079][ T5752] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 103.152512][ T5752] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 103.196859][ T5752] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 103.198027][ T5752] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 103.233132][ T5752] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 103.250215][ T5752] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 103.290273][ T5752] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 103.435707][ T5752] 8021q: adding VLAN 0 to HW filter on device bond0 [ 103.455845][ T5752] 8021q: adding VLAN 0 to HW filter on device team0 [ 103.476670][ T3830] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.476794][ T3830] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.502814][ T42] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.502941][ T42] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.784996][ T4914] Bluetooth: hci0: command tx timeout [ 104.126792][ T5752] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 104.247839][ T5752] veth0_vlan: entered promiscuous mode [ 104.279332][ T5752] veth1_vlan: entered promiscuous mode [ 104.327966][ T5752] veth0_macvtap: entered promiscuous mode [ 104.342663][ T5752] veth1_macvtap: entered promiscuous mode [ 104.384922][ T5752] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 104.422841][ T5752] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 104.558830][ T56] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.849977][ T3753] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 104.849998][ T3753] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 104.918489][ T56] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 104.918510][ T56] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 104.934155][ T3753] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.934536][ T3841] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.934572][ T3841] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 2026/08/02 08:52:54 executed programs: 2 [ 105.291190][ T5911] loop0: detected capacity change from 0 to 32768 [ 105.864244][ T4914] Bluetooth: hci0: command tx timeout [ 105.899229][ T5912] loop0: detected capacity change from 0 to 32768 [ 106.307699][ T5913] loop0: detected capacity change from 0 to 32768 [ 106.695870][ T5914] loop0: detected capacity change from 0 to 32768 [ 107.048061][ T5915] loop0: detected capacity change from 0 to 32768 [ 107.430150][ T5916] loop0: detected capacity change from 0 to 32768 [ 107.792432][ T5917] loop0: detected capacity change from 0 to 32768 [ 108.154989][ T5918] loop0: detected capacity change from 0 to 32768 [ 108.528757][ T5919] loop0: detected capacity change from 0 to 32768 [ 108.901951][ T5920] loop0: detected capacity change from 0 to 32768 [ 110.330046][ T5924] set_capacity_and_notify: 3 callbacks suppressed [ 110.330057][ T5924] loop0: detected capacity change from 0 to 32768 2026/08/02 08:52:59 executed programs: 16 [ 110.729449][ T5925] loop0: detected capacity change from 0 to 32768 [ 111.059368][ T5926] loop0: detected capacity change from 0 to 32768 [ 111.377973][ T5927] loop0: detected capacity change from 0 to 32768 [ 111.757261][ T5928] loop0: detected capacity change from 0 to 32768 [ 112.109839][ T5929] loop0: detected capacity change from 0 to 32768 [ 112.445163][ T5930] loop0: detected capacity change from 0 to 32768 [ 112.794576][ T5931] loop0: detected capacity change from 0 to 32768 [ 113.158910][ T5932] loop0: detected capacity change from 0 to 32768 [ 113.525692][ T5934] loop0: detected capacity change from 0 to 32768 [ 115.261375][ C0] ================================================================== [ 115.261426][ C0] BUG: KASAN: slab-use-after-free in lbmIODone+0x130e/0x16b0 [ 115.261466][ C0] Read of size 4 at addr ffff8880253dae08 by task rcuc/0/20 [ 115.261488][ C0] [ 115.261513][ C0] CPU: 0 UID: 0 PID: 20 Comm: rcuc/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 115.261542][ C0] Hardware [ 115.261542][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 115.261570][ C0] Call Trace: [ 115.261578][ C0] [ 115.261592][ C0] dump_stack_lvl+0xe8/0x150 [ 115.261631][ C0] print_address_description+0x55/0x1e0 [ 115.261665][ C0] ? lbmIODone+0x130e/0x16b0 [ 115.261680][ C0] print_report+0x58/0x70 [ 115.261707][ C0] kasan_report+0x117/0x150 [ 115.261734][ C0] ? lbmIODone+0x130e/0x16b0 [ 115.261755][ C0] lbmIODone+0x130e/0x16b0 [ 115.261773][ C0] ? blkg_put+0x22/0x240 [ 115.261792][ C0] ? blkg_put+0x22/0x240 [ 115.261810][ C0] ? blkg_put+0x18d/0x240 [ 115.261847][ C0] ? bio_endio+0x980/0x9d0 [ 115.261875][ C0] blk_update_request+0x57b/0xe50 [ 115.261905][ C0] blk_mq_end_request+0x3e/0x70 [ 115.261943][ C0] blk_done_softirq+0x10a/0x160 [ 115.261967][ C0] handle_softirqs+0x1d9/0x6c0 [ 115.261998][ C0] __local_bh_enable_ip+0x170/0x2b0 [ 115.262023][ C0] ? __pfx_thread_stack_free_rcu+0x10/0x10 [ 115.262055][ C0] ? rcu_cpu_kthread+0x20b/0x1480 [ 115.262078][ C0] rcu_cpu_kthread+0x99f/0x1480 [ 115.262118][ C0] ? rcu_cpu_kthread+0x20b/0x1480 [ 115.262144][ C0] ? __pfx_rcu_cpu_kthread+0x10/0x10 [ 115.262179][ C0] ? schedule+0x90/0x2b0 [ 115.262204][ C0] smpboot_thread_fn+0x57c/0xa80 [ 115.262232][ C0] ? smpboot_thread_fn+0x4e/0xa80 [ 115.262260][ C0] kthread+0x388/0x470 [ 115.262289][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 115.262338][ C0] ? __pfx_kthread+0x10/0x10 [ 115.262384][ C0] ret_from_fork+0x514/0xb70 [ 115.262418][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 115.262447][ C0] ? __switch_to+0xc89/0x1420 [ 115.262474][ C0] ? __pfx_kthread+0x10/0x10 [ 115.262525][ C0] ret_from_fork_asm+0x1a/0x30 [ 115.262552][ C0] [ 115.262566][ C0] [ 115.262571][ C0] Allocated by task 5939: [ 115.262581][ C0] kasan_save_track+0x3e/0x80 [ 115.262601][ C0] __kasan_kmalloc+0x93/0xb0 [ 115.262621][ C0] __kmalloc_cache_noprof+0x3d2/0x6b0 [ 115.262651][ C0] lmLogInit+0x3e5/0x1a20 [ 115.262679][ C0] lmLogOpen+0x4e3/0xf90 [ 115.262706][ C0] jfs_mount_rw+0xf3/0x670 [ 115.262733][ C0] jfs_fill_super+0x769/0xda0 [ 115.262755][ C0] get_tree_bdev_flags+0x430/0x4f0 [ 115.262781][ C0] vfs_get_tree+0x92/0x2a0 [ 115.262805][ C0] do_new_mount+0x319/0xdc0 [ 115.262823][ C0] __se_sys_mount+0x31d/0x420 [ 115.262841][ C0] do_syscall_64+0x174/0x580 [ 115.262867][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 115.262886][ C0] [ 115.262891][ C0] Freed by task 5752: [ 115.262900][ C0] kasan_save_track+0x3e/0x80 [ 115.262918][ C0] kasan_save_free_info+0x40/0x50 [ 115.262945][ C0] __kasan_slab_free+0x5c/0x80 [ 115.262964][ C0] kfree+0x1c5/0x6c0 [ 115.262979][ C0] lmLogShutdown+0x456/0x850 [ 115.262993][ C0] lmLogClose+0x28c/0x530 [ 115.263020][ C0] jfs_umount+0x2da/0x3b0 [ 115.263047][ C0] jfs_put_super+0x8c/0x190 [ 115.263068][ C0] generic_shutdown_super+0x13d/0x2d0 [ 115.263089][ C0] kill_block_super+0x44/0x90 [ 115.263111][ C0] deactivate_locked_super+0xbc/0x130 [ 115.263130][ C0] cleanup_mnt+0x3d3/0x460 [ 115.263153][ C0] task_work_run+0x1d9/0x270 [ 115.263170][ C0] exit_to_user_mode_loop+0x1fa/0x730 [ 115.263189][ C0] do_syscall_64+0x353/0x580 [ 115.263214][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 115.263232][ C0] [ 115.263237][ C0] The buggy address belongs to the object at ffff8880253dae00 [ 115.263237][ C0] which belongs to the cache kmalloc-256 of size 256 [ 115.263255][ C0] The buggy address is located 8 bytes inside of [ 115.263255][ C0] freed 256-byte region [ffff8880253dae00, ffff8880253daf00) [ 115.263276][ C0] [ 115.263280][ C0] The buggy address belongs to the physical page: [ 115.263307][ C0] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x253da [ 115.263330][ C0] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 115.263348][ C0] flags: 0x80000000000040(head|node=0|zone=1) [ 115.263367][ C0] page_type: f5(slab) [ 115.263386][ C0] raw: 0080000000000040 ffff88813ffb2b40 dead000000000100 dead000000000122 [ 115.263404][ C0] raw: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000 [ 115.263425][ C0] head: 0080000000000040 ffff88813ffb2b40 dead000000000100 dead000000000122 [ 115.263442][ C0] head: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000 [ 115.263461][ C0] head: 0080000000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff [ 115.263479][ C0] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000002 [ 115.263490][ C0] page dumped because: kasan: bad access detected [ 115.263503][ C0] page_owner tracks the page as allocated [ 115.263509][ 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 5551944723, free_ts 0 [ 115.263542][ C0] post_alloc_hook+0x1f9/0x250 [ 115.263584][ C0] get_page_from_freelist+0x262a/0x26a0 [ 115.263607][ C0] __alloc_frozen_pages_noprof+0x18d/0x380 [ 115.263630][ C0] allocate_slab+0x79/0x5e0 [ 115.263656][ C0] refill_objects+0x2d8/0x350 [ 115.263683][ C0] __pcs_replace_empty_main+0x330/0x690 [ 115.263709][ C0] __kmalloc_noprof+0x544/0x780 [ 115.263728][ C0] security_inode_init_security+0x102/0x3e0 [ 115.263758][ C0] shmem_mknod+0x1ea/0x340 [ 115.263782][ C0] vfs_mknod+0x443/0x610 [ 115.263807][ C0] devtmpfs_work_loop+0x861/0xdf0 [ 115.263836][ C0] devtmpfsd+0x4d/0x50 [ 115.263856][ C0] kthread+0x388/0x470 [ 115.263883][ C0] ret_from_fork+0x514/0xb70 [ 115.263911][ C0] ret_from_fork_asm+0x1a/0x30 [ 115.263929][ C0] page_owner free stack trace missing [ 115.263936][ C0] [ 115.263941][ C0] Memory state around the buggy address: [ 115.263952][ C0] ffff8880253dad00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 115.263966][ C0] ffff8880253dad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 115.263978][ C0] >ffff8880253dae00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 115.263987][ C0] ^ [ 115.263996][ C0] ffff8880253dae80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 115.264008][ C0] ffff8880253daf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 115.264018][ C0] ================================================================== [ 115.304768][ C0] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 115.304789][ C0] CPU: 0 UID: 0 PID: 20 Comm: rcuc/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 115.304813][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 115.304826][ C0] Call Trace: [ 115.304834][ C0] [ 115.304842][ C0] vpanic+0x56c/0xa60 [ 115.304869][ C0] ? __pfx_vpanic+0x10/0x10 [ 115.304890][ C0] ? __pfx___schedule+0x10/0x10 [ 115.304918][ C0] panic+0xc5/0xd0 [ 115.304937][ C0] ? __pfx_panic+0x10/0x10 [ 115.304956][ C0] ? preempt_schedule_thunk+0x16/0x40 [ 115.304987][ C0] ? lbmIODone+0x130e/0x16b0 [ 115.305006][ C0] check_panic_on_warn+0x89/0xb0 [ 115.305027][ C0] ? lbmIODone+0x130e/0x16b0 [ 115.305045][ C0] end_report+0x73/0x170 [ 115.305070][ C0] ? lbmIODone+0x130e/0x16b0 [ 115.305087][ C0] kasan_report+0x128/0x150 [ 115.305111][ C0] ? lbmIODone+0x130e/0x16b0 [ 115.305133][ C0] lbmIODone+0x130e/0x16b0 [ 115.305153][ C0] ? blkg_put+0x22/0x240 [ 115.305172][ C0] ? blkg_put+0x22/0x240 [ 115.305190][ C0] ? blkg_put+0x18d/0x240 [ 115.305209][ C0] ? bio_endio+0x980/0x9d0 [ 115.305234][ C0] blk_update_request+0x57b/0xe50 [ 115.305264][ C0] blk_mq_end_request+0x3e/0x70 [ 115.305288][ C0] blk_done_softirq+0x10a/0x160 [ 115.305313][ C0] handle_softirqs+0x1d9/0x6c0 [ 115.305344][ C0] __local_bh_enable_ip+0x170/0x2b0 [ 115.305369][ C0] ? __pfx_thread_stack_free_rcu+0x10/0x10 [ 115.305401][ C0] ? rcu_cpu_kthread+0x20b/0x1480 [ 115.305425][ C0] rcu_cpu_kthread+0x99f/0x1480 [ 115.305452][ C0] ? rcu_cpu_kthread+0x20b/0x1480 [ 115.305479][ C0] ? __pfx_rcu_cpu_kthread+0x10/0x10 [ 115.305502][ C0] ? schedule+0x90/0x2b0 [ 115.305528][ C0] smpboot_thread_fn+0x57c/0xa80 [ 115.305562][ C0] ? smpboot_thread_fn+0x4e/0xa80 [ 115.305591][ C0] kthread+0x388/0x470 [ 115.305623][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 115.305650][ C0] ? __pfx_kthread+0x10/0x10 [ 115.305680][ C0] ret_from_fork+0x514/0xb70 [ 115.305713][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 115.305744][ C0] ? __switch_to+0xc89/0x1420 [ 115.305771][ C0] ? __pfx_kthread+0x10/0x10 [ 115.305802][ C0] ret_from_fork_asm+0x1a/0x30 [ 115.305829][ C0] [ 115.306096][ C0] Kernel Offset: disabled