Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|
KASAN: use-after-free Read in __ext4_check_dir_entry ext4 | C | 8 | 2066d | 2069d | 24/25 | closed as dup on 2018/03/31 22:38 |
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Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|
KASAN: use-after-free Read in __ext4_check_dir_entry ext4 | C | 8 | 2066d | 2069d | 24/25 | closed as dup on 2018/03/31 22:38 |
Title | Replies (including bot) | Last reply |
---|---|---|
KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry | 0 (1) | 2018/03/31 20:47 |
KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry | 0 (1) | 2018/03/31 20:47 |
================================================================== BUG: KASAN: slab-out-of-bounds in __ext4_check_dir_entry+0x2de/0x320 fs/ext4/dir.c:69 Read of size 2 at addr ffff8801ad833002 by task syzkaller726813/4419 CPU: 1 PID: 4419 Comm: syzkaller726813 Not tainted 4.16.0-rc7+ #9 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 print_address_description+0x73/0x250 mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report+0x23c/0x360 mm/kasan/report.c:412 __asan_report_load2_noabort+0x14/0x20 mm/kasan/report.c:431 __ext4_check_dir_entry+0x2de/0x320 fs/ext4/dir.c:69 ext4_readdir+0xd00/0x3600 fs/ext4/dir.c:237 iterate_dir+0x1ca/0x530 fs/readdir.c:51 SYSC_getdents64 fs/readdir.c:314 [inline] SyS_getdents64+0x221/0x420 fs/readdir.c:295 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x43fd69 RSP: 002b:00007ffc4562e698 EFLAGS: 00000203 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd69 RDX: 00000000200015fc RSI: 0000000020001540 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000203 R12: 0000000000401690 R13: 0000000000401720 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 0: (stack is not available) Freed by task 0: (stack is not available) The buggy address belongs to the object at ffff8801ad833040 which belongs to the cache vm_area_struct of size 200 The buggy address is located 62 bytes to the left of 200-byte region [ffff8801ad833040, ffff8801ad833108) The buggy address belongs to the page: page:ffffea0006b60cc0 count:1 mapcount:0 mapping:ffff8801ad833040 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801ad833040 0000000000000000 000000010000000f raw: ffffea0006b63860 ffffea0006b51420 ffff8801da5d6840 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801ad832f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801ad832f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801ad833000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8801ad833080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801ad833100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2018/04/01 08:26 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | syz | C | ci-upstream-kasan-gce-root | |||
2018/03/31 00:40 | upstream | 9dd2326890d8 | 8fbce0e4 | .config | console log | report | syz | C | ci-upstream-kasan-gce-root | |||
2018/04/01 17:20 | upstream | 10b84daddbec | dc889257 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 12:16 | upstream | 10b84daddbec | 0a78e248 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 12:04 | upstream | 10b84daddbec | 0a78e248 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 11:37 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 11:28 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 10:48 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 09:07 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 06:11 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 06:04 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 05:13 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 04:57 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 04:23 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 04:09 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/04/01 03:59 | upstream | 10b84daddbec | 0174c6c8 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/03/31 01:27 | upstream | 9dd2326890d8 | 8fbce0e4 | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/03/31 00:22 | upstream | 9dd2326890d8 | 8fbce0e4 | .config | console log | report | ci-upstream-kasan-gce-root |