Warning: Permanently added '10.128.0.85' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 102.341118][ T27] audit: type=1400 audit(1587544186.222:8): avc: denied { execmem } for pid=7030 comm="syz-executor205" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 102.409763][ T7038] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 102.413970][ T7039] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 102.422198][ T7041] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 102.426975][ T7037] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 102.455019][ T7040] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 102.473094][ T7044] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 153.614134][ T7041] ================================================================== [ 153.622430][ T7041] BUG: KASAN: use-after-free in get_block+0x110f/0x1380 [ 153.629986][ T7041] Read of size 2 at addr ffff888082c493be by task syz-executor205/7041 [ 153.638239][ T7041] [ 153.640730][ T7041] CPU: 1 PID: 7041 Comm: syz-executor205 Not tainted 5.7.0-rc2-syzkaller #0 [ 153.649651][ T7041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 153.660105][ T7041] Call Trace: [ 153.664134][ T7041] dump_stack+0x188/0x20d [ 153.669024][ T7041] print_address_description.constprop.0.cold+0xd3/0x315 [ 153.676247][ T7041] ? get_block+0x110f/0x1380 [ 153.681052][ T7041] __kasan_report.cold+0x35/0x4d [ 153.686284][ T7041] ? get_block+0x110f/0x1380 [ 153.690993][ T7041] ? get_block+0x110f/0x1380 [ 153.695747][ T7041] kasan_report+0x33/0x50 [ 153.700282][ T7041] get_block+0x110f/0x1380 [ 153.704799][ T7041] ? block_to_path.isra.0+0x300/0x300 [ 153.710256][ T7041] ? create_empty_buffers+0x590/0x8c0 [ 153.715653][ T7041] ? __add_to_page_cache_locked+0x7b4/0xe00 [ 153.721816][ T7041] ? do_raw_spin_unlock+0x171/0x260 [ 153.727389][ T7041] minix_get_block+0xe5/0x110 [ 153.732212][ T7041] block_read_full_page+0x2bf/0x1010 [ 153.738431][ T7041] ? minix_rename+0x8c0/0x8c0 [ 153.743259][ T7041] ? block_truncate_page+0xc50/0xc50 [ 153.748578][ T7041] ? add_to_page_cache_lru+0x300/0x700 [ 153.754125][ T7041] ? add_to_page_cache_locked+0x40/0x40 [ 153.759795][ T7041] ? __page_cache_alloc+0x110/0x480 [ 153.765029][ T7041] do_read_cache_page+0x1053/0x1810 [ 153.770351][ T7041] ? generic_file_read_iter+0x2b10/0x2b10 [ 153.776275][ T7041] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 153.782149][ T7041] ? preempt_schedule_irq+0xee/0x150 [ 153.788444][ T7041] dir_get_page.isra.0+0x1d/0x60 [ 153.793981][ T7041] minix_find_entry+0x200/0x7b0 [ 153.799123][ T7041] minix_inode_by_name+0x6d/0x452 [ 153.805141][ T7041] ? minix_dotdot+0x170/0x170 [ 153.810114][ T7041] minix_lookup+0x103/0x190 [ 153.815178][ T7041] lookup_open+0x8d7/0x1320 [ 153.820050][ T7041] ? page_put_link+0x210/0x210 [ 153.824944][ T7041] ? preempt_count_add+0x74/0x140 [ 153.830352][ T7041] ? __mnt_want_write+0x1da/0x2c0 [ 153.835675][ T7041] path_openat+0x93f/0x27d0 [ 153.840393][ T7041] ? path_lookupat.isra.0+0x530/0x530 [ 153.845918][ T7041] ? mark_held_locks+0xe0/0xe0 [ 153.850869][ T7041] ? debug_object_activate+0x204/0x480 [ 153.856369][ T7041] do_filp_open+0x192/0x260 [ 153.861021][ T7041] ? may_open_dev+0xf0/0xf0 [ 153.865564][ T7041] ? do_raw_spin_lock+0x129/0x2e0 [ 153.870723][ T7041] ? _raw_spin_unlock+0x24/0x40 [ 153.875685][ T7041] ? __alloc_fd+0x46d/0x600 [ 153.880226][ T7041] do_sys_openat2+0x585/0x7d0 [ 153.884933][ T7041] ? file_open_root+0x400/0x400 [ 153.889988][ T7041] ? lock_downgrade+0x840/0x840 [ 153.895247][ T7041] do_sys_open+0xc3/0x140 [ 153.899867][ T7041] ? filp_open+0x70/0x70 [ 153.904149][ T7041] ? fput_many+0x2f/0x1a0 [ 153.908650][ T7041] ? filp_close+0x12f/0x170 [ 153.913236][ T7041] ? trace_hardirqs_off_caller+0x55/0x230 [ 153.918997][ T7041] do_syscall_64+0xf6/0x7d0 [ 153.923698][ T7041] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 153.929630][ T7041] RIP: 0033:0x445ef9 [ 153.933749][ T7041] Code: ed cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 bb cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 153.954737][ T7041] RSP: 002b:00007ffc4f7dec58 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 153.964427][ T7041] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000445ef9 [ 153.972696][ T7041] RDX: 0000000000000000 RSI: 0000000000020040 RDI: 0000000020000040 [ 153.980908][ T7041] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000402fd0 [ 153.989124][ T7041] R10: 00007ffc4f7deb30 R11: 0000000000000246 R12: 0000000000000000 [ 153.997563][ T7041] R13: 0000000000402fd0 R14: 0000000000000000 R15: 0000000000000000 [ 154.005879][ T7041] [ 154.008234][ T7041] The buggy address belongs to the page: [ 154.014029][ T7041] page:ffffea00020b1240 refcount:2 mapcount:0 mapping:000000007b3de2b2 index:0x2f24f [ 154.023513][ T7041] minix_aops name:"/" [ 154.027614][ T7041] flags: 0xfffe0000002016(referenced|uptodate|lru|private) [ 154.034844][ T7041] raw: 00fffe0000002016 ffffea0002389288 ffffea00020b1388 ffff8880846492e8 [ 154.043643][ T7041] raw: 000000000002f24f ffff8880856d0ae0 00000002ffffffff ffff8880a9550000 [ 154.052515][ T7041] page dumped because: kasan: bad access detected [ 154.058958][ T7041] page->mem_cgroup:ffff8880a9550000 [ 154.064456][ T7041] [ 154.066849][ T7041] Memory state around the buggy address: [ 154.072756][ T7041] ffff888082c49280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 154.081288][ T7041] ffff888082c49300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 154.089380][ T7041] >ffff888082c49380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 154.097480][ T7041] ^ [ 154.103397][ T7041] ffff888082c49400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 154.111621][ T7041] ffff888082c49480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 154.119700][ T7041] ================================================================== [ 154.128959][ T7041] Disabling lock debugging due to kernel taint [ 154.135436][ T7041] Kernel panic - not syncing: panic_on_warn set ... [ 154.142832][ T7041] CPU: 1 PID: 7041 Comm: syz-executor205 Tainted: G B 5.7.0-rc2-syzkaller #0 [ 154.152980][ T7041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 154.163529][ T7041] Call Trace: [ 154.166842][ T7041] dump_stack+0x188/0x20d [ 154.171194][ T7041] panic+0x2e3/0x75c [ 154.175279][ T7041] ? add_taint.cold+0x16/0x16 [ 154.179970][ T7041] ? retint_kernel+0x2b/0x2b [ 154.184580][ T7041] ? get_block+0x110f/0x1380 [ 154.189198][ T7041] ? trace_hardirqs_on+0x55/0x220 [ 154.194272][ T7041] ? get_block+0x110f/0x1380 [ 154.198879][ T7041] end_report+0x4d/0x53 [ 154.204090][ T7041] __kasan_report.cold+0xd/0x4d [ 154.208961][ T7041] ? get_block+0x110f/0x1380 [ 154.213596][ T7041] ? get_block+0x110f/0x1380 [ 154.218276][ T7041] kasan_report+0x33/0x50 [ 154.222617][ T7041] get_block+0x110f/0x1380 [ 154.227075][ T7041] ? block_to_path.isra.0+0x300/0x300 [ 154.232697][ T7041] ? create_empty_buffers+0x590/0x8c0 [ 154.238086][ T7041] ? __add_to_page_cache_locked+0x7b4/0xe00 [ 154.244009][ T7041] ? do_raw_spin_unlock+0x171/0x260 [ 154.249380][ T7041] minix_get_block+0xe5/0x110 [ 154.254084][ T7041] block_read_full_page+0x2bf/0x1010 [ 154.259464][ T7041] ? minix_rename+0x8c0/0x8c0 [ 154.264308][ T7041] ? block_truncate_page+0xc50/0xc50 [ 154.269614][ T7041] ? add_to_page_cache_lru+0x300/0x700 [ 154.275206][ T7041] ? add_to_page_cache_locked+0x40/0x40 [ 154.280989][ T7041] ? __page_cache_alloc+0x110/0x480 [ 154.286801][ T7041] do_read_cache_page+0x1053/0x1810 [ 154.292132][ T7041] ? generic_file_read_iter+0x2b10/0x2b10 [ 154.298123][ T7041] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 154.303738][ T7041] ? preempt_schedule_irq+0xee/0x150 [ 154.309053][ T7041] dir_get_page.isra.0+0x1d/0x60 [ 154.314242][ T7041] minix_find_entry+0x200/0x7b0 [ 154.319403][ T7041] minix_inode_by_name+0x6d/0x452 [ 154.324445][ T7041] ? minix_dotdot+0x170/0x170 [ 154.329270][ T7041] minix_lookup+0x103/0x190 [ 154.333819][ T7041] lookup_open+0x8d7/0x1320 [ 154.338541][ T7041] ? page_put_link+0x210/0x210 [ 154.343418][ T7041] ? preempt_count_add+0x74/0x140 [ 154.348596][ T7041] ? __mnt_want_write+0x1da/0x2c0 [ 154.355548][ T7041] path_openat+0x93f/0x27d0 [ 154.360190][ T7041] ? path_lookupat.isra.0+0x530/0x530 [ 154.365843][ T7041] ? mark_held_locks+0xe0/0xe0 [ 154.371177][ T7041] ? debug_object_activate+0x204/0x480 [ 154.376656][ T7041] do_filp_open+0x192/0x260 [ 154.381404][ T7041] ? may_open_dev+0xf0/0xf0 [ 154.386041][ T7041] ? do_raw_spin_lock+0x129/0x2e0 [ 154.391300][ T7041] ? _raw_spin_unlock+0x24/0x40 [ 154.396738][ T7041] ? __alloc_fd+0x46d/0x600 [ 154.401354][ T7041] do_sys_openat2+0x585/0x7d0 [ 154.406071][ T7041] ? file_open_root+0x400/0x400 [ 154.411048][ T7041] ? lock_downgrade+0x840/0x840 [ 154.416931][ T7041] do_sys_open+0xc3/0x140 [ 154.421375][ T7041] ? filp_open+0x70/0x70 [ 154.425651][ T7041] ? fput_many+0x2f/0x1a0 [ 154.430088][ T7041] ? filp_close+0x12f/0x170 [ 154.434772][ T7041] ? trace_hardirqs_off_caller+0x55/0x230 [ 154.441858][ T7041] do_syscall_64+0xf6/0x7d0 [ 154.448795][ T7041] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 154.455794][ T7041] RIP: 0033:0x445ef9 [ 154.461738][ T7041] Code: ed cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 bb cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 154.482505][ T7041] RSP: 002b:00007ffc4f7dec58 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 154.491072][ T7041] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000445ef9 [ 154.499063][ T7041] RDX: 0000000000000000 RSI: 0000000000020040 RDI: 0000000020000040 [ 154.507623][ T7041] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000402fd0 [ 154.515632][ T7041] R10: 00007ffc4f7deb30 R11: 0000000000000246 R12: 0000000000000000 [ 154.524145][ T7041] R13: 0000000000402fd0 R14: 0000000000000000 R15: 0000000000000000 [ 154.534927][ T7041] Kernel Offset: disabled [ 154.539952][ T7041] Rebooting in 86400 seconds..