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| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| upstream | KASAN: use-after-free Read in bpf_prog_kallsyms_find (2) bpf | 19 | C | done | 9 | 2090d | 2101d | 13/29 | fixed on 2019/11/23 02:56 | |
| upstream | KASAN: use-after-free Read in bpf_prog_kallsyms_find bpf | 19 | 2 | 2355d | 2385d | 0/29 | auto-closed as invalid on 2019/07/31 10:58 |
| Created | Duration | User | Patch | Repo | Result |
|---|---|---|---|---|---|
| 2020/10/15 16:55 | 3m | bisect fix | linux-4.19.y | error job log | |
| 2020/09/15 16:32 | 23m | bisect fix | linux-4.19.y | OK (0) job log log | |
| 2020/07/30 23:08 | 28m | bisect fix | linux-4.19.y | OK (0) job log log | |
| 2020/06/30 22:20 | 24m | bisect fix | linux-4.19.y | OK (0) job log log | |
| 2020/05/31 20:47 | 26m | bisect fix | linux-4.19.y | OK (0) job log log | |
| 2020/05/01 20:20 | 26m | bisect fix | linux-4.19.y | OK (0) job log log | |
| 2020/04/01 19:54 | 26m | bisect fix | linux-4.19.y | OK (0) job log log | |
| 2020/03/02 19:22 | 31m | bisect fix | linux-4.19.y | OK (0) job log log | |
| 2019/12/13 16:57 | 26m | bisect fix | linux-4.19.y | OK (0) job log log |
================================================================== BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:193 [inline] BUG: KASAN: use-after-free in __lt_find include/linux/rbtree_latch.h:118 [inline] BUG: KASAN: use-after-free in latch_tree_find include/linux/rbtree_latch.h:208 [inline] BUG: KASAN: use-after-free in bpf_prog_kallsyms_find kernel/bpf/core.c:511 [inline] BUG: KASAN: use-after-free in bpf_prog_kallsyms_find+0x2a9/0x2c0 kernel/bpf/core.c:504 Read of size 8 at addr ffff8880a5a07180 by task syz-executor204/8448 CPU: 0 PID: 8448 Comm: syz-executor204 Not tainted 4.19.80 #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+0x172/0x1f0 lib/dump_stack.c:113 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report mm/kasan/report.c:412 [inline] kasan_report.cold+0x8c/0x2ba mm/kasan/report.c:396 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 __read_once_size include/linux/compiler.h:193 [inline] __lt_find include/linux/rbtree_latch.h:118 [inline] latch_tree_find include/linux/rbtree_latch.h:208 [inline] bpf_prog_kallsyms_find kernel/bpf/core.c:511 [inline] bpf_prog_kallsyms_find+0x2a9/0x2c0 kernel/bpf/core.c:504 is_bpf_text_address+0x78/0x170 kernel/bpf/core.c:546 kernel_text_address+0x73/0xf0 kernel/extable.c:152 __kernel_text_address+0xd/0x40 kernel/extable.c:107 unwind_get_return_address arch/x86/kernel/unwind_frame.c:18 [inline] unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:13 __save_stack_trace+0x99/0x100 arch/x86/kernel/stacktrace.c:45 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60 save_stack+0x45/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc mm/kasan/kasan.c:553 [inline] kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531 kmem_cache_alloc_node_trace+0x153/0x720 mm/slab.c:3668 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node+0x3d/0x80 mm/slab.c:3696 kmalloc_node include/linux/slab.h:557 [inline] __vmalloc_area_node mm/vmalloc.c:1677 [inline] __vmalloc_node_range+0x1f8/0x790 mm/vmalloc.c:1750 __vmalloc_node mm/vmalloc.c:1801 [inline] __vmalloc_node_flags mm/vmalloc.c:1815 [inline] vzalloc+0x6b/0x90 mm/vmalloc.c:1854 adjust_insn_aux_data kernel/bpf/verifier.c:5548 [inline] bpf_patch_insn_data+0xfd/0x330 kernel/bpf/verifier.c:5584 convert_ctx_accesses+0x986/0x13e0 kernel/bpf/verifier.c:5754 bpf_check+0x206d/0x6259 kernel/bpf/verifier.c:6334 bpf_prog_load+0xdcf/0x13f0 kernel/bpf/syscall.c:1445 __do_sys_bpf kernel/bpf/syscall.c:2411 [inline] __se_sys_bpf kernel/bpf/syscall.c:2373 [inline] __x64_sys_bpf+0x32b/0x4c0 kernel/bpf/syscall.c:2373 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x446949 Code: e8 0c e8 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fed49b0edb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446949 RDX: 0000000000000032 RSI: 0000000020000440 RDI: 0000000000000005 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007ffe1659767f R14: 00007fed49b0f9c0 R15: 000000000000002d Allocated by task 8444: save_stack+0x45/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc mm/kasan/kasan.c:553 [inline] kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531 kmem_cache_alloc_trace+0x152/0x760 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] bpf_prog_alloc+0x216/0x2a0 kernel/bpf/core.c:90 jit_subprogs kernel/bpf/verifier.c:5814 [inline] fixup_call_args kernel/bpf/verifier.c:5933 [inline] bpf_check+0x3e7f/0x6259 kernel/bpf/verifier.c:6340 bpf_prog_load+0xdcf/0x13f0 kernel/bpf/syscall.c:1445 __do_sys_bpf kernel/bpf/syscall.c:2411 [inline] __se_sys_bpf kernel/bpf/syscall.c:2373 [inline] __x64_sys_bpf+0x32b/0x4c0 kernel/bpf/syscall.c:2373 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 14: save_stack+0x45/0xd0 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:3503 [inline] kfree+0xcf/0x220 mm/slab.c:3822 bpf_jit_free+0xa5/0x300 bpf_prog_free_deferred+0x1a6/0x420 kernel/bpf/core.c:1809 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 The buggy address belongs to the object at ffff8880a5a07140 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 64 bytes inside of 256-byte region [ffff8880a5a07140, ffff8880a5a07240) The buggy address belongs to the page: page:ffffea00029681c0 count:1 mapcount:0 mapping:ffff88812c3f07c0 index:0x0 flags: 0x1fffc0000000100(slab) raw: 01fffc0000000100 ffffea0002923988 ffffea00024c3188 ffff88812c3f07c0 raw: 0000000000000000 ffff8880a5a07000 000000010000000c 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a5a07080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880a5a07100: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb >ffff8880a5a07180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880a5a07200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8880a5a07280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019/10/25 23:29 | linux-4.19.y | c3038e718a19 | 04ca72cd | .config | console log | report | syz | C | ci2-linux-4-19 | |||
| 2019/10/20 03:14 | linux-4.19.y | c3038e718a19 | 8c88c9c1 | .config | console log | report | syz | C | ci2-linux-4-19 | |||
| 2019/10/14 05:49 | linux-4.19.y | dafd634415a7 | 2f661ec4 | .config | console log | report | syz | C | ci2-linux-4-19 | |||
| 2021/01/27 18:16 | linux-4.19.y | c4ff839de17f | a57db36f | .config | console log | report | info | ci2-linux-4-19 | KASAN: use-after-free Read in bpf_prog_kallsyms_find | |||
| 2020/08/16 16:32 | linux-4.19.y | c14d30dc9987 | 5ce13532 | .config | console log | report | ci2-linux-4-19 | |||||
| 2020/02/01 19:22 | linux-4.19.y | 32ee7492f104 | 326d4c78 | .config | console log | report | ci2-linux-4-19 | |||||
| 2020/01/30 12:12 | linux-4.19.y | 7cdefde351b6 | 5ed23f9a | .config | console log | report | ci2-linux-4-19 | |||||
| 2020/01/10 13:15 | linux-4.19.y | cb1f9a169a0e | 4de4e9f0 | .config | console log | report | ci2-linux-4-19 | |||||
| 2019/12/27 02:17 | linux-4.19.y | 672481c2deff | be5c2c81 | .config | console log | report | ci2-linux-4-19 | |||||
| 2019/12/23 09:06 | linux-4.19.y | 672481c2deff | 8b967267 | .config | console log | report | ci2-linux-4-19 | |||||
| 2019/10/19 21:45 | linux-4.19.y | c3038e718a19 | 8c88c9c1 | .config | console log | report | ci2-linux-4-19 |