Warning: Permanently added '10.128.0.121' (ECDSA) to the list of known hosts. executing program [ 62.210370][ T6899] ================================================================== [ 62.218694][ T6899] BUG: KASAN: slab-out-of-bounds in qrtr_endpoint_post+0x5c1/0x1050 [ 62.226807][ T6899] Read of size 4294967293 at addr ffff8880a65ed820 by task syz-executor059/6899 [ 62.235798][ T6899] [ 62.238109][ T6899] CPU: 0 PID: 6899 Comm: syz-executor059 Not tainted 5.9.0-rc7-syzkaller #0 [ 62.246759][ T6899] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.256782][ T6899] Call Trace: [ 62.260047][ T6899] dump_stack+0x198/0x1fd [ 62.264378][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.269640][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.274904][ T6899] print_address_description.constprop.0.cold+0xae/0x497 [ 62.281902][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.287158][ T6899] ? lockdep_hardirqs_off+0x96/0xd0 [ 62.292334][ T6899] ? vprintk_func+0x95/0x1d4 [ 62.296899][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.302159][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.307428][ T6899] kasan_report.cold+0x1f/0x37 [ 62.312179][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.317448][ T6899] check_memory_region+0x13d/0x180 [ 62.322532][ T6899] memcpy+0x20/0x60 [ 62.326317][ T6899] qrtr_endpoint_post+0x5c1/0x1050 [ 62.331432][ T6899] qrtr_tun_write_iter+0xf5/0x180 [ 62.336439][ T6899] new_sync_write+0x422/0x650 [ 62.341119][ T6899] ? new_sync_read+0x6e0/0x6e0 [ 62.345854][ T6899] ? putname+0xe1/0x120 [ 62.349983][ T6899] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 62.355521][ T6899] ? putname+0xe1/0x120 [ 62.359670][ T6899] ? apparmor_file_permission+0x26e/0x4e0 [ 62.365366][ T6899] ? build_open_flags+0x650/0x650 [ 62.370383][ T6899] vfs_write+0x5ad/0x730 [ 62.374622][ T6899] ksys_write+0x12d/0x250 [ 62.378923][ T6899] ? __ia32_sys_read+0xb0/0xb0 [ 62.383662][ T6899] ? check_preemption_disabled+0x50/0x130 [ 62.389355][ T6899] ? syscall_enter_from_user_mode+0x1d/0x60 [ 62.395250][ T6899] do_syscall_64+0x2d/0x70 [ 62.399640][ T6899] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.405506][ T6899] RIP: 0033:0x440279 [ 62.409398][ T6899] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.428981][ T6899] RSP: 002b:00007fff9ca22948 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 62.437372][ T6899] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440279 [ 62.445330][ T6899] RDX: 0000000000000020 RSI: 0000000020000000 RDI: 0000000000000003 [ 62.453290][ T6899] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 62.461241][ T6899] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a80 [ 62.469180][ T6899] R13: 0000000000401b10 R14: 0000000000000000 R15: 0000000000000000 [ 62.477242][ T6899] [ 62.479543][ T6899] Allocated by task 6899: [ 62.483933][ T6899] kasan_save_stack+0x1b/0x40 [ 62.488592][ T6899] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 62.494426][ T6899] __kmalloc+0x1b0/0x360 [ 62.498787][ T6899] qrtr_tun_write_iter+0x8a/0x180 [ 62.503789][ T6899] new_sync_write+0x422/0x650 [ 62.508450][ T6899] vfs_write+0x5ad/0x730 [ 62.512663][ T6899] ksys_write+0x12d/0x250 [ 62.516967][ T6899] do_syscall_64+0x2d/0x70 [ 62.521358][ T6899] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.527216][ T6899] [ 62.529528][ T6899] The buggy address belongs to the object at ffff8880a65ed800 [ 62.529528][ T6899] which belongs to the cache kmalloc-32 of size 32 [ 62.543396][ T6899] The buggy address is located 0 bytes to the right of [ 62.543396][ T6899] 32-byte region [ffff8880a65ed800, ffff8880a65ed820) [ 62.556922][ T6899] The buggy address belongs to the page: [ 62.562533][ T6899] page:000000006cad24ea refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880a65edfc1 pfn:0xa65ed [ 62.573961][ T6899] flags: 0xfffe0000000200(slab) [ 62.578804][ T6899] raw: 00fffe0000000200 ffffea00028a4788 ffffea00028baf48 ffff8880aa040100 [ 62.587378][ T6899] raw: ffff8880a65edfc1 ffff8880a65ed000 000000010000003f 0000000000000000 [ 62.595943][ T6899] page dumped because: kasan: bad access detected [ 62.602343][ T6899] [ 62.604645][ T6899] Memory state around the buggy address: [ 62.610266][ T6899] ffff8880a65ed700: fb fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 62.618298][ T6899] ffff8880a65ed780: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 62.626331][ T6899] >ffff8880a65ed800: 00 00 00 00 fc fc fc fc fb fb fb fb fc fc fc fc [ 62.634652][ T6899] ^ [ 62.639733][ T6899] ffff8880a65ed880: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 62.647772][ T6899] ffff8880a65ed900: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 62.655810][ T6899] ================================================================== [ 62.663840][ T6899] Disabling lock debugging due to kernel taint [ 62.670234][ T6899] Kernel panic - not syncing: panic_on_warn set ... [ 62.676815][ T6899] CPU: 0 PID: 6899 Comm: syz-executor059 Tainted: G B 5.9.0-rc7-syzkaller #0 [ 62.686854][ T6899] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.696887][ T6899] Call Trace: [ 62.700148][ T6899] dump_stack+0x198/0x1fd [ 62.704462][ T6899] ? qrtr_endpoint_post+0x500/0x1050 [ 62.709718][ T6899] panic+0x382/0x7fb [ 62.713592][ T6899] ? __warn_printk+0xf3/0xf3 [ 62.718169][ T6899] ? preempt_schedule_common+0x59/0xc0 [ 62.723609][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.728862][ T6899] ? preempt_schedule_thunk+0x16/0x18 [ 62.734202][ T6899] ? trace_hardirqs_on+0x55/0x220 [ 62.739195][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.744447][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.749703][ T6899] end_report+0x4d/0x53 [ 62.753827][ T6899] kasan_report.cold+0xd/0x37 [ 62.758473][ T6899] ? qrtr_endpoint_post+0x5c1/0x1050 [ 62.763727][ T6899] check_memory_region+0x13d/0x180 [ 62.768805][ T6899] memcpy+0x20/0x60 [ 62.772592][ T6899] qrtr_endpoint_post+0x5c1/0x1050 [ 62.777679][ T6899] qrtr_tun_write_iter+0xf5/0x180 [ 62.782675][ T6899] new_sync_write+0x422/0x650 [ 62.787439][ T6899] ? new_sync_read+0x6e0/0x6e0 [ 62.792185][ T6899] ? putname+0xe1/0x120 [ 62.796311][ T6899] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 62.801821][ T6899] ? putname+0xe1/0x120 [ 62.805949][ T6899] ? apparmor_file_permission+0x26e/0x4e0 [ 62.811641][ T6899] ? build_open_flags+0x650/0x650 [ 62.816633][ T6899] vfs_write+0x5ad/0x730 [ 62.820846][ T6899] ksys_write+0x12d/0x250 [ 62.825146][ T6899] ? __ia32_sys_read+0xb0/0xb0 [ 62.829883][ T6899] ? check_preemption_disabled+0x50/0x130 [ 62.835586][ T6899] ? syscall_enter_from_user_mode+0x1d/0x60 [ 62.841452][ T6899] do_syscall_64+0x2d/0x70 [ 62.845838][ T6899] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.851708][ T6899] RIP: 0033:0x440279 [ 62.855617][ T6899] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.875191][ T6899] RSP: 002b:00007fff9ca22948 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 62.883574][ T6899] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440279 [ 62.891606][ T6899] RDX: 0000000000000020 RSI: 0000000020000000 RDI: 0000000000000003 [ 62.899549][ T6899] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 62.907592][ T6899] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a80 [ 62.915546][ T6899] R13: 0000000000401b10 R14: 0000000000000000 R15: 0000000000000000 [ 62.924895][ T6899] Kernel Offset: disabled [ 62.929208][ T6899] Rebooting in 86400 seconds..