Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: use-after-free Read in locks_delete_block fs | syz | 4 | 2191d | 2214d | 11/28 | fixed on 2019/01/15 20:25 |
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Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: use-after-free Read in locks_delete_block fs | syz | 4 | 2191d | 2214d | 11/28 | fixed on 2019/01/15 20:25 |
================================================================== BUG: KASAN: use-after-free in __wake_up_common+0x6c/0x450 kernel/sched/wait.c:81 Read of size 8 at addr ffff8881d42e1180 by task syz-executor332/22865 CPU: 0 PID: 22865 Comm: syz-executor332 Not tainted 5.4.10-syzkaller-00217-gf5f770e495ba #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b0/0x228 lib/dump_stack.c:118 print_address_description+0x96/0x5d0 mm/kasan/report.c:374 __kasan_report+0x14b/0x1c0 mm/kasan/report.c:506 kasan_report+0x26/0x50 mm/kasan/common.c:634 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:132 __wake_up_common+0x6c/0x450 kernel/sched/wait.c:81 __wake_up_common_lock kernel/sched/wait.c:123 [inline] __wake_up+0x145/0x210 kernel/sched/wait.c:142 __locks_wake_up_blocks fs/locks.c:742 [inline] locks_delete_block+0x30d/0x560 fs/locks.c:773 locks_lock_inode_wait+0x364/0x3f0 fs/locks.c:2140 locks_lock_file_wait include/linux/fs.h:1328 [inline] __do_sys_flock fs/locks.c:2225 [inline] __se_sys_flock+0x45b/0x560 fs/locks.c:2188 __x64_sys_flock+0x5b/0x70 fs/locks.c:2188 do_syscall_64+0xc0/0x100 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x446e49 Code: e8 dc e6 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 2b 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa0afdf8db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000049 RAX: ffffffffffffffda RBX: 00000000006dcc48 RCX: 0000000000446e49 RDX: 0000000000446e49 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00000000006dcc40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc4c R13: 00007fffbbd8081f R14: 00007fa0afdf99c0 R15: 20c49ba5e353f7cf Allocated by task 22870: save_stack mm/kasan/common.c:69 [inline] set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc+0x117/0x1b0 mm/kasan/common.c:510 kasan_slab_alloc+0xe/0x10 mm/kasan/common.c:518 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slub.c:2758 [inline] slab_alloc mm/slub.c:2766 [inline] kmem_cache_alloc+0x120/0x2b0 mm/slub.c:2771 kmem_cache_zalloc include/linux/slab.h:680 [inline] locks_alloc_lock fs/locks.c:346 [inline] flock_make_lock fs/locks.c:487 [inline] __do_sys_flock fs/locks.c:2207 [inline] __se_sys_flock+0x156/0x560 fs/locks.c:2188 __x64_sys_flock+0x5b/0x70 fs/locks.c:2188 do_syscall_64+0xc0/0x100 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 22870: save_stack mm/kasan/common.c:69 [inline] set_track mm/kasan/common.c:77 [inline] kasan_set_free_info mm/kasan/common.c:332 [inline] __kasan_slab_free+0x168/0x220 mm/kasan/common.c:471 kasan_slab_free+0xe/0x10 mm/kasan/common.c:480 slab_free_hook mm/slub.c:1424 [inline] slab_free_freelist_hook mm/slub.c:1457 [inline] slab_free mm/slub.c:3004 [inline] kmem_cache_free+0x181/0x7a0 mm/slub.c:3020 locks_free_lock fs/locks.c:383 [inline] __do_sys_flock fs/locks.c:2228 [inline] __se_sys_flock+0x478/0x560 fs/locks.c:2188 __x64_sys_flock+0x5b/0x70 fs/locks.c:2188 do_syscall_64+0xc0/0x100 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff8881d42e1118 which belongs to the cache file_lock_cache of size 216 The buggy address is located 104 bytes inside of 216-byte region [ffff8881d42e1118, ffff8881d42e11f0) The buggy address belongs to the page: page:ffffea000750b840 refcount:1 mapcount:0 mapping:ffff8881da8eca00 index:0x0 raw: 8000000000000200 0000000000000000 0000000c00000001 ffff8881da8eca00 raw: 0000000000000000 00000000000e000e 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881d42e1080: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc ffff8881d42e1100: fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881d42e1180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ^ ffff8881d42e1200: fc fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb ffff8881d42e1280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/01/11 12:43 | https://android.googlesource.com/kernel/common android-5.4 | f5f770e495ba | 4c04afaa | .config | console log | report | syz | C | ci2-android-5-4-kasan | |||
2020/03/04 21:38 | https://android.googlesource.com/kernel/common android-5.4 | 04f7ce5d3dca | 712198ac | .config | console log | report | ci2-android-5-4-kasan | |||||
2020/01/28 16:43 | https://android.googlesource.com/kernel/common android-5.4 | b2b96d09ef40 | c8e81ce4 | .config | console log | report | ci2-android-5-4-kasan |