Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|
KASAN: use-after-free Read in sha512_mb_flusher crypto | 1 | 2305d | 2303d | 0/28 | closed as dup on 2018/08/21 02:46 |
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Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|
KASAN: use-after-free Read in sha512_mb_flusher crypto | 1 | 2305d | 2303d | 0/28 | closed as dup on 2018/08/21 02:46 |
Title | Replies (including bot) | Last reply |
---|---|---|
KASAN: use-after-free Read in sha512_ctx_mgr_resubmit | 7 (8) | 2018/10/05 22:33 |
================================================================== BUG: KASAN: use-after-free in sha512_ctx_mgr_resubmit.part.3+0x3b1/0x4a0 arch/x86/crypto/sha512-mb/sha512_mb.c:136 Read of size 4 at addr ffff8801d4870578 by task kworker/1:1/24 CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted 4.19.0-rc6+ #266 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: crypto mcryptd_flusher Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.9+0x242/0x309 mm/kasan/report.c:412 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432 sha512_ctx_mgr_resubmit.part.3+0x3b1/0x4a0 arch/x86/crypto/sha512-mb/sha512_mb.c:136 sha512_ctx_mgr_resubmit arch/x86/crypto/sha512-mb/sha512_mb.c:135 [inline] sha512_ctx_mgr_flush+0x5c/0xb0 arch/x86/crypto/sha512-mb/sha512_mb.c:367 sha512_mb_flusher+0x27b/0x610 arch/x86/crypto/sha512-mb/sha512_mb.c:943 mcryptd_flusher+0x340/0x4b0 crypto/mcryptd.c:208 process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Allocated by task 6003: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553 __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x14e/0x760 mm/slab.c:3727 kmalloc include/linux/slab.h:518 [inline] sock_kmalloc+0x15a/0x1f0 net/core/sock.c:1983 hash_accept_parent_nokey+0x58/0x2e0 crypto/algif_hash.c:438 hash_accept_parent+0x5b/0x80 crypto/algif_hash.c:465 af_alg_accept+0x127/0x7d0 crypto/af_alg.c:296 alg_accept+0x46/0x60 crypto/af_alg.c:332 __sys_accept4+0x3b2/0x8a0 net/socket.c:1590 __do_sys_accept4 net/socket.c:1625 [inline] __se_sys_accept4 net/socket.c:1622 [inline] __x64_sys_accept4+0x97/0xf0 net/socket.c:1622 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 6002: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xcf/0x230 mm/slab.c:3813 __sock_kfree_s net/core/sock.c:2004 [inline] sock_kfree_s+0x29/0x60 net/core/sock.c:2010 hash_sock_destruct+0x157/0x1c0 crypto/algif_hash.c:427 __sk_destruct+0x107/0xa80 net/core/sock.c:1560 sk_destruct+0x78/0x90 net/core/sock.c:1595 __sk_free+0xcf/0x300 net/core/sock.c:1606 sk_free+0x42/0x50 net/core/sock.c:1617 sock_put include/net/sock.h:1691 [inline] af_alg_release+0x6e/0x90 crypto/af_alg.c:126 __sock_release+0xd7/0x250 net/socket.c:579 sock_close+0x19/0x20 net/socket.c:1141 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801d4870080 which belongs to the cache kmalloc-2048 of size 2048 The buggy address is located 1272 bytes inside of 2048-byte region [ffff8801d4870080, ffff8801d4870880) The buggy address belongs to the page: page:ffffea0007521c00 count:1 mapcount:0 mapping:ffff8801da800c40 index:0x0 compound_mapcount: 0 flags: 0x2fffc0000008100(slab|head) raw: 02fffc0000008100 ffffea0007526108 ffffea0007528008 ffff8801da800c40 raw: 0000000000000000 ffff8801d4870080 0000000100000003 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d4870400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d4870480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8801d4870500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801d4870580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d4870600: 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2018/10/04 14:40 | upstream | cec4de302c5f | 8b311eaf | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2018/10/04 12:59 | upstream | cec4de302c5f | 8b311eaf | .config | console log | report | syz | C | ci-upstream-kasan-gce-smack-root | |||
2018/08/14 05:32 | upstream | 7796916146b8 | 7a88b141 | .config | console log | report | syz | C | ci-upstream-kasan-gce-root | |||
2018/08/14 01:40 | linux-next | 5ed5da74de9e | 7a88b141 | .config | console log | report | syz | ci-upstream-linux-next-kasan-gce-root |