Warning: Permanently added '10.128.0.55' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 60.555903][ T7114] ================================================================== [ 60.564190][ T7114] BUG: KASAN: slab-out-of-bounds in fl6_update_dst+0x2bb/0x2c0 [ 60.571739][ T7114] Read of size 16 at addr ffff8880a2ebcb68 by task syz-executor865/7114 [ 60.580063][ T7114] [ 60.582411][ T7114] CPU: 0 PID: 7114 Comm: syz-executor865 Not tainted 5.7.0-rc6-syzkaller #0 [ 60.591095][ T7114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.601156][ T7114] Call Trace: executing program executing program executing program executing program executing program executing program [ 60.604462][ T7114] dump_stack+0x188/0x20d [ 60.608805][ T7114] print_address_description.constprop.0.cold+0xd3/0x413 [ 60.615840][ T7114] ? vprintk_func+0x81/0x17e [ 60.620459][ T7114] ? fl6_update_dst+0x2bb/0x2c0 [ 60.625334][ T7114] __kasan_report.cold+0x20/0x38 [ 60.630289][ T7114] ? fl6_update_dst+0x2bb/0x2c0 [ 60.635160][ T7114] ? fl6_update_dst+0x2bb/0x2c0 [ 60.640024][ T7114] kasan_report+0x33/0x50 [ 60.644417][ T7114] fl6_update_dst+0x2bb/0x2c0 [ 60.649114][ T7114] udpv6_sendmsg+0x1866/0x2b50 executing program executing program executing program executing program executing program executing program [ 60.653903][ T7114] ? ip_reply_glue_bits+0xb0/0xb0 [ 60.659087][ T7114] ? udp_v6_get_port+0x690/0x690 [ 60.664036][ T7114] ? lock_downgrade+0x840/0x840 [ 60.668910][ T7114] ? tomoyo_check_unix_acl+0x100/0x100 [ 60.674530][ T7114] ? tomoyo_check_inet_address+0xe6/0x6c0 [ 60.680371][ T7114] ? aa_label_sk_perm+0x89/0xe0 [ 60.685247][ T7114] ? aa_sk_perm+0x319/0xab0 [ 60.689771][ T7114] ? aa_af_perm+0x260/0x260 [ 60.694302][ T7114] ? inet6_sendmsg+0x99/0xe0 [ 60.698918][ T7114] inet6_sendmsg+0x99/0xe0 executing program executing program executing program executing program executing program executing program [ 60.703381][ T7114] ? inet6_ioctl+0x1b0/0x1b0 [ 60.707986][ T7114] sock_sendmsg+0xcf/0x120 [ 60.712420][ T7114] __sys_sendto+0x220/0x330 [ 60.716940][ T7114] ? __ia32_sys_getpeername+0xb0/0xb0 [ 60.722332][ T7114] ? mark_held_locks+0xe0/0xe0 [ 60.727115][ T7114] ? find_held_lock+0x2d/0x110 [ 60.731912][ T7114] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.737482][ T7114] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.743570][ T7114] ? ret_from_fork+0x8/0x30 [ 60.748102][ T7114] ? switch_fpu_return+0x1db/0x4b0 executing program executing program executing program executing program executing program executing program executing program [ 60.753242][ T7114] ? fpregs_mark_activate+0x320/0x320 [ 60.758630][ T7114] __x64_sys_sendto+0xdd/0x1b0 [ 60.763422][ T7114] ? lockdep_hardirqs_on+0x463/0x620 [ 60.768759][ T7114] do_syscall_64+0xf6/0x7d0 [ 60.773280][ T7114] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.779175][ T7114] RIP: 0033:0x446989 [ 60.783079][ T7114] Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 executing program executing program executing program executing program executing program executing program [ 60.802686][ T7114] RSP: 002b:00007fe98c098da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 60.811102][ T7114] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446989 [ 60.819083][ T7114] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 60.827064][ T7114] RBP: 00000000006dbc30 R08: 00000000200001c0 R09: 000000000000001c [ 60.835051][ T7114] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c [ 60.843117][ T7114] R13: 00007fff2890ba2f R14: 00007fe98c0999c0 R15: 0000000000000001 [ 60.851374][ T7114] executing program executing program executing program executing program executing program executing program executing program [ 60.853797][ T7114] Allocated by task 7108: [ 60.858315][ T7114] save_stack+0x1b/0x40 [ 60.862524][ T7114] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 60.868206][ T7114] __kmalloc+0x161/0x7a0 [ 60.872632][ T7114] sock_kmalloc+0xb5/0x100 [ 60.877060][ T7114] ipv6_renew_options+0x274/0x940 [ 60.882095][ T7114] do_ipv6_setsockopt.isra.0+0x2eaf/0x42f0 [ 60.887912][ T7114] ipv6_setsockopt+0xfb/0x180 [ 60.892603][ T7114] udpv6_setsockopt+0x5d/0xa0 [ 60.898163][ T7114] __sys_setsockopt+0x248/0x480 executing program executing program executing program executing program executing program executing program [ 60.903023][ T7114] __x64_sys_setsockopt+0xba/0x150 [ 60.908144][ T7114] do_syscall_64+0xf6/0x7d0 [ 60.912792][ T7114] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.918777][ T7114] [ 60.921187][ T7114] Freed by task 5000: [ 60.925178][ T7114] save_stack+0x1b/0x40 [ 60.929349][ T7114] __kasan_slab_free+0xf7/0x140 [ 60.934221][ T7114] kfree+0x109/0x2b0 [ 60.938165][ T7114] kernfs_fop_release+0xe7/0x190 [ 60.943115][ T7114] __fput+0x33e/0x880 [ 60.947311][ T7114] task_work_run+0xf4/0x1b0 [ 60.951845][ T7114] exit_to_usermode_loop+0x2fa/0x360 executing program executing program executing program executing program executing program executing program executing program [ 60.957142][ T7114] do_syscall_64+0x6b1/0x7d0 [ 60.961760][ T7114] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.967652][ T7114] [ 60.969999][ T7114] The buggy address belongs to the object at ffff8880a2ebcb00 [ 60.969999][ T7114] which belongs to the cache kmalloc-128 of size 128 [ 60.984176][ T7114] The buggy address is located 104 bytes inside of [ 60.984176][ T7114] 128-byte region [ffff8880a2ebcb00, ffff8880a2ebcb80) [ 60.997469][ T7114] The buggy address belongs to the page: executing program executing program executing program executing program executing program executing program executing program [ 61.003121][ T7114] page:ffffea00028baf00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880a2ebc300 [ 61.013555][ T7114] flags: 0xfffe0000000200(slab) [ 61.018438][ T7114] raw: 00fffe0000000200 ffffea000256fac8 ffffea000252d808 ffff8880aa000700 [ 61.027030][ T7114] raw: ffff8880a2ebc300 ffff8880a2ebc000 0000000100000005 0000000000000000 [ 61.035609][ T7114] page dumped because: kasan: bad access detected [ 61.042018][ T7114] [ 61.044352][ T7114] Memory state around the buggy address: executing program executing program executing program executing program executing program executing program [ 61.050594][ T7114] ffff8880a2ebca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.058753][ T7114] ffff8880a2ebca80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 61.066835][ T7114] >ffff8880a2ebcb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 61.074909][ T7114] ^ [ 61.083003][ T7114] ffff8880a2ebcb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 61.091072][ T7114] ffff8880a2ebcc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.099131][ T7114] ================================================================== executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.107198][ T7114] Disabling lock debugging due to kernel taint [ 61.122950][ T7114] Kernel panic - not syncing: panic_on_warn set ... [ 61.129566][ T7114] CPU: 0 PID: 7114 Comm: syz-executor865 Tainted: G B 5.7.0-rc6-syzkaller #0 [ 61.139730][ T7114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.149779][ T7114] Call Trace: [ 61.153090][ T7114] dump_stack+0x188/0x20d executing program executing program executing program executing program executing program executing program [ 61.158042][ T7114] panic+0x2e3/0x75c [ 61.162028][ T7114] ? add_taint.cold+0x16/0x16 [ 61.166721][ T7114] ? preempt_schedule_common+0x5e/0xc0 [ 61.172183][ T7114] ? fl6_update_dst+0x2bb/0x2c0 [ 61.177162][ T7114] ? preempt_schedule_thunk+0x16/0x18 [ 61.182733][ T7114] ? trace_hardirqs_on+0x55/0x220 [ 61.187761][ T7114] ? fl6_update_dst+0x2bb/0x2c0 [ 61.192709][ T7114] end_report+0x4d/0x53 [ 61.196866][ T7114] __kasan_report.cold+0xd/0x38 [ 61.201820][ T7114] ? fl6_update_dst+0x2bb/0x2c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.206708][ T7114] ? fl6_update_dst+0x2bb/0x2c0 [ 61.211595][ T7114] kasan_report+0x33/0x50 [ 61.216050][ T7114] fl6_update_dst+0x2bb/0x2c0 [ 61.220760][ T7114] udpv6_sendmsg+0x1866/0x2b50 [ 61.225789][ T7114] ? ip_reply_glue_bits+0xb0/0xb0 [ 61.230846][ T7114] ? udp_v6_get_port+0x690/0x690 [ 61.235963][ T7114] ? lock_downgrade+0x840/0x840 [ 61.240928][ T7114] ? tomoyo_check_unix_acl+0x100/0x100 [ 61.247261][ T7114] ? tomoyo_check_inet_address+0xe6/0x6c0 [ 61.252995][ T7114] ? aa_label_sk_perm+0x89/0xe0 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.257938][ T7114] ? aa_sk_perm+0x319/0xab0 [ 61.262451][ T7114] ? aa_af_perm+0x260/0x260 [ 61.266973][ T7114] ? inet6_sendmsg+0x99/0xe0 [ 61.271567][ T7114] inet6_sendmsg+0x99/0xe0 [ 61.275988][ T7114] ? inet6_ioctl+0x1b0/0x1b0 [ 61.280678][ T7114] sock_sendmsg+0xcf/0x120 [ 61.285112][ T7114] __sys_sendto+0x220/0x330 [ 61.289627][ T7114] ? __ia32_sys_getpeername+0xb0/0xb0 [ 61.295006][ T7114] ? mark_held_locks+0xe0/0xe0 [ 61.299778][ T7114] ? find_held_lock+0x2d/0x110 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.304568][ T7114] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.310118][ T7114] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.316883][ T7114] ? ret_from_fork+0x8/0x30 [ 61.321396][ T7114] ? switch_fpu_return+0x1db/0x4b0 [ 61.326601][ T7114] ? fpregs_mark_activate+0x320/0x320 [ 61.331978][ T7114] __x64_sys_sendto+0xdd/0x1b0 [ 61.336780][ T7114] ? lockdep_hardirqs_on+0x463/0x620 [ 61.342257][ T7114] do_syscall_64+0xf6/0x7d0 [ 61.346778][ T7114] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.352683][ T7114] RIP: 0033:0x446989 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.356577][ T7114] Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 61.376706][ T7114] RSP: 002b:00007fe98c098da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 61.386926][ T7114] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446989 [ 61.395780][ T7114] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 executing program executing program executing program executing program [ 61.404739][ T7114] RBP: 00000000006dbc30 R08: 00000000200001c0 R09: 000000000000001c [ 61.415601][ T7114] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c [ 61.424093][ T7114] R13: 00007fff2890ba2f R14: 00007fe98c0999c0 R15: 0000000000000001 [ 61.436218][ T7114] Kernel Offset: disabled [ 61.440555][ T7114] Rebooting in 86400 seconds..