KASAN: slab-use-after-free Write in binder_add_device ================================================================== BUG: KASAN: slab-use-after-free in hlist_add_head include/linux/list.h:1026 [inline] BUG: KASAN: slab-use-after-free in binder_add_device+0x64/0xac drivers/android/binder.c:6932 Write of size 8 at addr ffff0000c8bca808 by task syz-executor/5630 CPU: 0 UID: 0 PID: 5630 Comm: syz-executor Not tainted 6.14.0-rc3-syzkaller-g0ad2507d5d93 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x178/0x518 mm/kasan/report.c:489 kasan_report+0xd8/0x138 mm/kasan/report.c:602 __asan_report_store8_noabort+0x20/0x2c mm/kasan/report_generic.c:386 hlist_add_head include/linux/list.h:1026 [inline] binder_add_device+0x64/0xac drivers/android/binder.c:6932 binderfs_binder_device_create+0x798/0x958 drivers/android/binderfs.c:210 binderfs_fill_super+0x7ac/0xc04 drivers/android/binderfs.c:729 vfs_get_super fs/super.c:1280 [inline] get_tree_nodev+0xb4/0x144 fs/super.c:1299 binderfs_fs_context_get_tree+0x28/0x38 drivers/android/binderfs.c:749 vfs_get_tree+0x90/0x28c fs/super.c:1814 do_new_mount+0x278/0x900 fs/namespace.c:3560 path_mount+0x590/0xe04 fs/namespace.c:3887 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount fs/namespace.c:4088 [inline] __arm64_sys_mount+0x4d8/0x5ac fs/namespace.c:4088 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Allocated by task 5625: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:562 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x90/0xa8 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x2c8/0x3f0 mm/slub.c:4325 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] binderfs_binder_device_create+0x18c/0x958 drivers/android/binderfs.c:147 binderfs_fill_super+0x7ac/0xc04 drivers/android/binderfs.c:729 vfs_get_super fs/super.c:1280 [inline] get_tree_nodev+0xb4/0x144 fs/super.c:1299 binderfs_fs_context_get_tree+0x28/0x38 drivers/android/binderfs.c:749 vfs_get_tree+0x90/0x28c fs/super.c:1814 do_new_mount+0x278/0x900 fs/namespace.c:3560 path_mount+0x590/0xe04 fs/namespace.c:3887 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount fs/namespace.c:4088 [inline] __arm64_sys_mount+0x4d8/0x5ac fs/namespace.c:4088 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Freed by task 5625: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x48/0x68 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4609 [inline] kfree+0x16c/0x484 mm/slub.c:4757 binderfs_evict_inode+0x160/0x220 drivers/android/binderfs.c:278 evict+0x444/0x978 fs/inode.c:796 iput_final fs/inode.c:1946 [inline] iput+0x740/0x8e8 fs/inode.c:1972 dentry_unlink_inode+0x3a0/0x4e0 fs/dcache.c:440 __dentry_kill+0x178/0x5e8 fs/dcache.c:643 shrink_kill+0xd4/0x2cc fs/dcache.c:1088 shrink_dentry_list+0x31c/0x768 fs/dcache.c:1115 shrink_dcache_parent+0xc4/0x374 do_one_tree+0x30/0xfc fs/dcache.c:1578 shrink_dcache_for_umount+0xd8/0x188 fs/dcache.c:1595 generic_shutdown_super+0x68/0x2bc fs/super.c:620 kill_anon_super fs/super.c:1237 [inline] kill_litter_super+0x74/0xb8 fs/super.c:1247 binderfs_kill_super+0x44/0x9c drivers/android/binderfs.c:791 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1413 __cleanup_mnt+0x20/0x30 fs/namespace.c:1420 task_work_run+0x230/0x2e0 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x4e8/0x1acc kernel/exit.c:938 do_group_exit+0x194/0x22c kernel/exit.c:1087 get_signal+0x1418/0x1534 kernel/signal.c:3036 do_signal+0x22c/0x39e4 arch/arm64/kernel/signal.c:1658 do_notify_resume+0x74/0x1f4 arch/arm64/kernel/entry-common.c:148 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 The buggy address belongs to the object at ffff0000c8bca800 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 8 bytes inside of freed 512-byte region [ffff0000c8bca800, ffff0000c8bcaa00) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x108bc8 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 05ffc00000000040 ffff0000c0001c80 fffffdffc32eaf00 dead000000000002 raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000 head: 05ffc00000000040 ffff0000c0001c80 fffffdffc32eaf00 dead000000000002 head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000 head: 05ffc00000000002 fffffdffc322f201 ffffffffffffffff 0000000000000000 head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000c8bca700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000c8bca780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000c8bca800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000c8bca880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000c8bca900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== Warning: Permanently added '10.128.1.143' (ED25519) to the list of known hosts. 1970/01/01 00:00:35 ignoring optional flag "sandboxArg"="0" 1970/01/01 00:00:36 parsed 1 programs [ 39.058266][ T5618] cgroup: Unknown subsys name 'net' [ 39.304423][ T5618] cgroup: Unknown subsys name 'cpuset' [ 39.308377][ T5618] cgroup: Unknown subsys name 'rlimit' [ 39.309916][ T5618] cgroup: Unknown subsys name 'memory' [ 39.468927][ T5618] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SS [ 48.715213][ T5630] ================================================================== [ 48.717331][ T5630] BUG: KASAN: slab-use-after-free in binder_add_device+0x64/0xac [ 48.719456][ T5630] Write of size 8 at addr ffff0000c8bca808 by task syz-executor/5630 [ 48.721426][ T5630] [ 48.722026][ T5630] CPU: 0 UID: 0 PID: 5630 Comm: syz-executor Not tainted 6.14.0-rc3-syzkaller-g0ad2507d5d93 #0 [ 48.722040][ T5630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 48.722047][ T5630] Call trace: [ 48.722051][ T5630] show_stack+0x2c/0x3c (C) [ 48.722073][ T5630] dump_stack_lvl+0xe4/0x150 [ 48.722086][ T5630] print_report+0x178/0x518 [ 48.722100][ T5630] kasan_report+0xd8/0x138 [ 48.722111][ T5630] __asan_report_store8_noabort+0x20/0x2c [ 48.722126][ T5630] binder_add_device+0x64/0xac [ 48.722137][ T5630] binderfs_binder_device_create+0x798/0x958 [ 48.722148][ T5630] binderfs_fill_super+0x7ac/0xc04 [ 48.722158][ T5630] get_tree_nodev+0xb4/0x144 [ 48.722169][ T5630] binderfs_fs_context_get_tree+0x28/0x38 [ 48.722184][ T5630] vfs_get_tree+0x90/0x28c [ 48.722195][ T5630] do_new_mount+0x278/0x900 [ 48.722207][ T5630] path_mount+0x590/0xe04 [ 48.722218][ T5630] __arm64_sys_mount+0x4d8/0x5ac [ 48.722230][ T5630] invoke_syscall+0x98/0x2b8 [ 48.722242][ T5630] el0_svc_common+0x130/0x23c [ 48.722253][ T5630] do_el0_svc+0x48/0x58 [ 48.722264][ T5630] el0_svc+0x54/0x168 [ 48.722276][ T5630] el0t_64_sync_handler+0x84/0x108 [ 48.722288][ T5630] el0t_64_sync+0x198/0x19c [ 48.722299][ T5630] [ 48.752179][ T5630] Allocated by task 5625: [ 48.753332][ T5630] kasan_save_track+0x40/0x78 [ 48.754445][ T5630] kasan_save_alloc_info+0x40/0x50 [ 48.755736][ T5630] __kasan_kmalloc+0x90/0xa8 [ 48.756997][ T5630] __kmalloc_cache_noprof+0x2c8/0x3f0 [ 48.758378][ T5630] binderfs_binder_device_create+0x18c/0x958 [ 48.759906][ T5630] binderfs_fill_super+0x7ac/0xc04 [ 48.761248][ T5630] get_tree_nodev+0xb4/0x144 [ 48.762380][ T5630] binderfs_fs_context_get_tree+0x28/0x38 [ 48.763821][ T5630] vfs_get_tree+0x90/0x28c [ 48.764931][ T5630] do_new_mount+0x278/0x900 [ 48.766038][ T5630] path_mount+0x590/0xe04 [ 48.767078][ T5630] __arm64_sys_mount+0x4d8/0x5ac [ 48.768282][ T5630] invoke_syscall+0x98/0x2b8 [ 48.769482][ T5630] el0_svc_common+0x130/0x23c [ 48.770634][ T5630] do_el0_svc+0x48/0x58 [ 48.771544][ T5630] el0_svc+0x54/0x168 [ 48.772403][ T5630] el0t_64_sync_handler+0x84/0x108 [ 48.773709][ T5630] el0t_64_sync+0x198/0x19c [ 48.774778][ T5630] [ 48.775383][ T5630] Freed by task 5625: [ 48.776373][ T5630] kasan_save_track+0x40/0x78 [ 48.777621][ T5630] kasan_save_free_info+0x54/0x6c [ 48.778918][ T5630] __kasan_slab_free+0x48/0x68 [ 48.780097][ T5630] kfree+0x16c/0x484 [ 48.781108][ T5630] binderfs_evict_inode+0x160/0x220 [ 48.782428][ T5630] evict+0x444/0x978 [ 48.783477][ T5630] iput+0x740/0x8e8 [ 48.784455][ T5630] dentry_unlink_inode+0x3a0/0x4e0 [ 48.785764][ T5630] __dentry_kill+0x178/0x5e8 [ 48.786924][ T5630] shrink_kill+0xd4/0x2cc [ 48.788098][ T5630] shrink_dentry_list+0x31c/0x768 [ 48.789407][ T5630] shrink_dcache_parent+0xc4/0x374 [ 48.790792][ T5630] do_one_tree+0x30/0xfc [ 48.791801][ T5630] shrink_dcache_for_umount+0xd8/0x188 [ 48.793118][ T5630] generic_shutdown_super+0x68/0x2bc [ 48.794441][ T5630] kill_litter_super+0x74/0xb8 [ 48.795575][ T5630] binderfs_kill_super+0x44/0x9c [ 48.796879][ T5630] deactivate_locked_super+0xc4/0x12c [ 48.798249][ T5630] deactivate_super+0xe0/0x100 [ 48.799444][ T5630] cleanup_mnt+0x34c/0x3dc [ 48.800582][ T5630] __cleanup_mnt+0x20/0x30 [ 48.801769][ T5630] task_work_run+0x230/0x2e0 [ 48.802944][ T5630] do_exit+0x4e8/0x1acc [ 48.804046][ T5630] do_group_exit+0x194/0x22c [ 48.805238][ T5630] get_signal+0x1418/0x1534 [ 48.806402][ T5630] do_signal+0x22c/0x39e4 [ 48.807480][ T5630] do_notify_resume+0x74/0x1f4 [ 48.808723][ T5630] el0_svc+0xac/0x168 [ 48.809717][ T5630] el0t_64_sync_handler+0x84/0x108 [ 48.811037][ T5630] el0t_64_sync+0x198/0x19c [ 48.812218][ T5630] [ 48.812800][ T5630] The buggy address belongs to the object at ffff0000c8bca800 [ 48.812800][ T5630] which belongs to the cache kmalloc-512 of size 512 [ 48.816453][ T5630] The buggy address is located 8 bytes inside of [ 48.816453][ T5630] freed 512-byte region [ffff0000c8bca800, ffff0000c8bcaa00) [ 48.819949][ T5630] [ 48.820553][ T5630] The buggy address belongs to the physical page: [ 48.822122][ T5630] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x108bc8 [ 48.824323][ T5630] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 48.826550][ T5630] flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff) [ 48.828497][ T5630] page_type: f5(slab) [ 48.829540][ T5630] raw: 05ffc00000000040 ffff0000c0001c80 fffffdffc32eaf00 dead000000000002 [ 48.831749][ T5630] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000 [ 48.833972][ T5630] head: 05ffc00000000040 ffff0000c0001c80 fffffdffc32eaf00 dead000000000002 [ 48.836335][ T5630] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000 [ 48.838674][ T5630] head: 05ffc00000000002 fffffdffc322f201 ffffffffffffffff 0000000000000000 [ 48.840879][ T5630] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 [ 48.843269][ T5630] page dumped because: kasan: bad access detected [ 48.844866][ T5630] [ 48.845492][ T5630] Memory state around the buggy address: [ 48.846916][ T5630] ffff0000c8bca700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.849103][ T5630] ffff0000c8bca780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.851271][ T5630] >ffff0000c8bca800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 48.853261][ T5630] ^ [ 48.854431][ T5630] ffff0000c8bca880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 48.856546][ T5630] ffff0000c8bca900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 48.858627][ T5630] ================================================================== [ 48.861182][ T5630] Disabling lock debugging due to kernel taint [ 48.979429][ T605] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 48.981657][ T605] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.005559][ T29] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.007695][ T29] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.242787][ T5656] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 49.245106][ T5656] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 49.247041][ T5656] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 49.249284][ T5656] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 49.251495][ T5656] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 49.254250][ T5656] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 50.153302][ T5683] chnl_net:caif_netlink_parms(): no params data found [ 50.170921][ T5683] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.173017][ T5683] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.174928][ T5683] bridge_slave_0: entered allmulticast mode [ 50.176867][ T5683] bridge_slave_0: entered promiscuous mode [ 50.179300][ T5683] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.181218][ T5683] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.183206][ T5683] bridge_slave_1: entered allmulticast mode [ 50.185155][ T5683] bridge_slave_1: entered promiscuous mode [ 50.193265][ T5683] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.196445][ T5683] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.204885][ T5683] team0: Port device team_slave_0 added [ 50.207336][ T5683] team0: Port device team_slave_1 added [ 50.214370][ T5683] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.216209][ 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 1560 would solve the problem. [ 50.223150][ T5683] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.271706][ T5683] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.273678][ 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 1560 would solve the problem. [ 50.280384][ T5683] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.292288][ T5683] hsr_slave_0: entered promiscuous mode [ 50.294022][ T5683] hsr_slave_1: entered promiscuous mode [ 50.326013][ T5683] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.328942][ T5683] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.331854][ T5683] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.335226][ T5683] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.351483][ T5683] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.353402][ T5683] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.355296][ T5683] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.357088][ T5683] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.373107][ T5683] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.378412][ T29] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.380622][ T29] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.473130][ T5683] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.601332][ T5683] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 50.604374][ T5683] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 50.609133][ T29] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.610959][ T29] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.613764][ T29] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.615521][ T29] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.654461][ T5683] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.667031][ T5683] veth0_vlan: entered promiscuous mode [ 50.670335][ T5683] veth1_vlan: entered promiscuous mode [ 50.678495][ T5683] veth0_macvtap: entered promiscuous mode [ 50.681130][ T5683] veth1_macvtap: entered promiscuous mode [ 50.686745][ T5683] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.690862][ T5683] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.695419][ T5683] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.697633][ T5683] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.699791][ T5683] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.702033][ T5683] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.063765][ T247] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.153092][ T247] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.214023][ T247] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.293338][ T247] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:00:51 executed programs: 0 [ 51.341069][ T5182] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.343345][ T5182] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.345349][ T5182] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.347843][ T5182] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.349884][ T5182] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.351879][ T5182] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.400216][ T5713] chnl_net:caif_netlink_parms(): no params data found [ 51.418084][ T5713] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.420156][ T5713] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.422417][ T5713] bridge_slave_0: entered allmulticast mode [ 51.424287][ T5713] bridge_slave_0: entered promiscuous mode [ 51.426718][ T5713] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.428630][ T5713] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.430540][ T5713] bridge_slave_1: entered allmulticast mode [ 51.432522][ T5713] bridge_slave_1: entered promiscuous mode [ 51.440485][ T5713] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.443901][ T5713] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.451493][ T5713] team0: Port device team_slave_0 added [ 51.454276][ T5713] team0: Port device team_slave_1 added [ 51.463047][ T5713] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.464886][ T5713] 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. [ 51.471601][ T5713] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.475336][ T5713] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.477163][ T5713] 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. [ 51.483754][ T5713] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.494869][ T5713] hsr_slave_0: entered promiscuous mode [ 51.496691][ T5713] hsr_slave_1: entered promiscuous mode [ 51.498300][ T5713] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 51.500270][ T5713] Cannot create hsr debugfs directory [ 53.372188][ T5656] Bluetooth: hci0: command tx timeout [ 53.846649][ T247] bridge_slave_1: left allmulticast mode [ 53.848155][ T247] bridge_slave_1: left promiscuous mode [ 53.849670][ T247] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.854657][ T247] bridge_slave_0: left allmulticast mode [ 53.856216][ T247] bridge_slave_0: left promiscuous mode [ 53.857655][ T247] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.452251][ T5656] Bluetooth: hci0: command tx timeout [ 55.454132][ T247] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 55.493387][ T247] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 55.533061][ T247] bond0 (unregistering): Released all slaves [ 55.587723][ T247] hsr_slave_0: left promiscuous mode [ 55.589357][ T247] hsr_slave_1: left promiscuous mode [ 55.591012][ T247] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 55.593414][ T247] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 55.595760][ T247] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 55.597691][ T247] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 55.601216][ T247] veth1_macvtap: left promiscuous mode [ 55.603099][ T247] veth0_macvtap: left promiscuous mode [ 55.604653][ T247] veth1_vlan: left promiscuous mode [ 55.606220][ T247] veth0_vlan: left promiscuous mode [ 57.522869][ T247] team0 (unregistering): Port device team_slave_1 removed [ 57.532232][ T5656] Bluetooth: hci0: command tx timeout [ 57.743362][ T247] team0 (unregistering): Port device team_slave_0 removed syzkaller build log: go env (err=) GO111MODULE='auto' GOARCH='amd64' GOBIN='' GOCACHE='/syzkaller/.cache/go-build' GOENV='/syzkaller/.config/go/env' GOEXE='' GOEXPERIMENT='' GOFLAGS='' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/linux/gopath' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.6.linux-amd64' GOSUMDB='sum.golang.org' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.6.linux-amd64/pkg/tool/linux_amd64' GOVCS='' GOVERSION='go1.23.6' GODEBUG='' GOTELEMETRY='local' GOTELEMETRYDIR='/syzkaller/.config/go/telemetry' GCCGO='gccgo' GOAMD64='v1' AR='ar' CC='gcc' CXX='g++' CGO_ENABLED='1' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOWORK='' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' PKG_CONFIG='pkg-config' GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build81741164=/tmp/go-build -gno-record-gcc-switches' git status (err=) HEAD detached at 40a34ec944 nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=linux GOARCH=arm64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=40a34ec944732a2502ee67d92cc8c023355dfad4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250214-180829'" -o ./bin/linux_arm64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_arm64 aarch64-linux-gnu-g++ -o ./bin/linux_arm64/syz-executor executor/executor.cc \ -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_arm64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"40a34ec944732a2502ee67d92cc8c023355dfad4\" /usr/lib/gcc-cross/aarch64-linux-gnu/12/../../../../aarch64-linux-gnu/bin/ld: /tmp/ccvchG8c.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0xd8): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking