syzbot |
sign-in | mailing list | source | docs |
| 🐞 Open [997] ≡ Subsystems 🐞 Fixed [5242] 🐞 Invalid [12511] ⬇ Missing Backports [84] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
| Title | Replies (including bot) | Last reply |
|---|---|---|
| Re: KASAN: use-after-free Read in work_is_static_object | 3 (3) | 2018/05/09 02:49 |
| [PATCH 4.15 00/47] 4.15.15-stable review | 55 (55) | 2018/03/31 07:22 |
| [PATCH 4.14 00/43] 4.14.32-stable review | 48 (48) | 2018/03/30 15:19 |
| [PATCH 4.9 00/28] 4.9.92-stable review | 37 (37) | 2018/03/30 15:19 |
| [PATCH v2 net] kcm: lock lower socket in kcm_attach | 2 (2) | 2018/03/16 15:12 |
| [PATCH net] kcm: lock lower socket in kcm_attach | 4 (4) | 2018/03/12 21:33 |
| Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|
| upstream | KASAN: use-after-free Read in get_work_pool (2) serial | C | done | 2 | 1510d | 1600d | 0/26 | closed as dup on 2020/02/24 18:36 | |
| linux-4.14 | KASAN: use-after-free Read in get_work_pool | C | done | 1 | 1514d | 1604d | 1/1 | fixed on 2020/04/03 09:27 |
BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:276 [inline] BUG: KASAN: use-after-free in atomic64_read arch/x86/include/asm/atomic64_64.h:21 [inline] BUG: KASAN: use-after-free in atomic_long_read include/asm-generic/atomic-long.h:44 [inline] BUG: KASAN: use-after-free in get_work_pool+0x1c2/0x1e0 kernel/workqueue.c:709 Read of size 8 at addr ffff8801cc7fe338 by task syz-executor7/1637 CPU: 1 PID: 1637 Comm: syz-executor7 Not tainted 4.13.0+ #79 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 print_address_description+0x73/0x250 mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report+0x24e/0x340 mm/kasan/report.c:409 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430 __read_once_size include/linux/compiler.h:276 [inline] atomic64_read arch/x86/include/asm/atomic64_64.h:21 [inline] atomic_long_read include/asm-generic/atomic-long.h:44 [inline] get_work_pool+0x1c2/0x1e0 kernel/workqueue.c:709 __queue_work+0x235/0x1150 kernel/workqueue.c:1401 queue_work_on+0x16a/0x1c0 kernel/workqueue.c:1486 queue_work include/linux/workqueue.h:489 [inline] strp_check_rcv+0x25/0x30 net/strparser/strparser.c:553 kcm_attach net/kcm/kcmsock.c:1439 [inline] kcm_attach_ioctl net/kcm/kcmsock.c:1460 [inline] kcm_ioctl+0x826/0x1610 net/kcm/kcmsock.c:1695 sock_do_ioctl+0x65/0xb0 net/socket.c:961 sock_ioctl+0x2c2/0x440 net/socket.c:1058 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x451e59 RSP: 002b:00007fa38043dc08 EFLAGS: 00000216 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000718160 RCX: 0000000000451e59 RDX: 00000000209b9000 RSI: 00000000000089e0 RDI: 000000000000000b RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004b9fa6 R13: 00000000ffffffff R14: 000000000000000b R15: 00000000000089e0 Allocated by task 1637: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3561 kmem_cache_zalloc include/linux/slab.h:656 [inline] kcm_attach net/kcm/kcmsock.c:1394 [inline] kcm_attach_ioctl net/kcm/kcmsock.c:1460 [inline] kcm_ioctl+0x2d1/0x1610 net/kcm/kcmsock.c:1695 sock_do_ioctl+0x65/0xb0 net/socket.c:961 sock_ioctl+0x2c2/0x440 net/socket.c:1058 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe Freed by task 1645: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3503 [inline] kmem_cache_free+0x77/0x280 mm/slab.c:3763 kcm_unattach+0xe50/0x1510 net/kcm/kcmsock.c:1563 kcm_unattach_ioctl net/kcm/kcmsock.c:1608 [inline] kcm_ioctl+0xdf0/0x1610 net/kcm/kcmsock.c:1705 sock_do_ioctl+0x65/0xb0 net/socket.c:961 sock_ioctl+0x2c2/0x440 net/socket.c:1058 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe The buggy address belongs to the object at ffff8801cc7fe200 which belongs to the cache kcm_psock_cache of size 664 The buggy address is located 312 bytes inside of 664-byte region [ffff8801cc7fe200, ffff8801cc7fe498) The buggy address belongs to the page: page:ffffea000731ff80 count:1 mapcount:0 mapping:ffff8801cc7fe200 index:0x0 compound_mapcount: 0 flags: 0x200000000008100(slab|head) raw: 0200000000008100 ffff8801cc7fe200 0000000000000000 0000000100000009 raw: ffffea00072e4320 ffffea00072d99a0 ffff8801d2e59cc0 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801cc7fe200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801cc7fe280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8801cc7fe300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801cc7fe380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801cc7fe400: 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017/09/12 03:14 | upstream | f007cad159e9 | 449b6f15 | .config | console log | report | syz | ci-upstream-kasan-gce | ||||
| 2017/11/11 13:57 | net-next-old | bee955cd3ab4 | e0a2b195 | .config | console log | report | syz | ci-upstream-net-kasan-gce | ||||
| 2017/09/12 12:42 | net-next-old | ad9a19d00370 | 96b8e399 | .config | console log | report | syz | ci-upstream-net-kasan-gce | ||||
| 2017/09/12 02:18 | net-next-old | ad9a19d00370 | 96b8e399 | .config | console log | report | syz | ci-upstream-net-kasan-gce | ||||
| 2017/09/12 13:21 | linux-next | 0d71e2d4aa14 | 0bd6a0a5 | .config | console log | report | syz | ci-upstream-next-kasan-gce | ||||
| 2017/11/17 23:35 | net-next-old | 6363b3f3ac5b | bf820689 | .config | console log | report | ci-upstream-net-kasan-gce | |||||
| 2017/11/12 19:21 | net-next-old | fdae5f37a88c | e0a2b195 | .config | console log | report | ci-upstream-net-kasan-gce | |||||
| 2017/10/24 19:02 | net-next-old | 49ca1943a7ad | 92f543f0 | .config | console log | report | ci-upstream-net-kasan-gce |