| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2023/05/28 | linux-5.15.y (ToT) | 1fe619a7d252 | C | [report] KASAN: null-ptr-deref Read in soft_cursor |
| 2023/05/28 | upstream (ToT) | 416839029e38 | C | Didn't crash |
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| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2023/05/28 | linux-5.15.y (ToT) | 1fe619a7d252 | C | [report] KASAN: null-ptr-deref Read in soft_cursor |
| 2023/05/28 | upstream (ToT) | 416839029e38 | C | Didn't crash |
| Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|
| upstream | general protection fault in soft_cursor fbdev | C | 3 | 197d | 197d | 24/25 | fixed on 2023/07/01 16:05 | ||
| linux-4.14 | KASAN: use-after-free Read in soft_cursor | C | inconclusive | 7 | 956d | 1467d | 0/1 | upstream: reported C repro on 2019/12/04 13:11 | |
| linux-4.19 | KASAN: slab-out-of-bounds Read in soft_cursor (2) | C | done | 8 | 932d | 1054d | 1/1 | fixed on 2021/06/23 17:43 | |
| linux-4.14 | KASAN: slab-out-of-bounds Read in soft_cursor | C | unreliable | 57 | 936d | 1468d | 0/1 | upstream: reported C repro on 2019/12/03 14:54 | |
| linux-4.19 | KASAN: global-out-of-bounds Read in soft_cursor | C | done | 22 | 929d | 1396d | 1/1 | fixed on 2021/06/24 08:01 | |
| linux-4.14 | KASAN: global-out-of-bounds Read in soft_cursor | C | error | 19 | 456d | 1455d | 0/1 | upstream: reported C repro on 2019/12/16 00:09 |
================================================================== BUG: KASAN: null-ptr-deref in soft_cursor+0x384/0x6b4 drivers/video/fbdev/core/softcursor.c:70 Read of size 16 at addr 0000000000000200 by task kworker/u4:1/136 CPU: 0 PID: 136 Comm: kworker/u4:1 Not tainted 5.15.113-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 Workqueue: events_power_efficient fb_flashcursor Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 __kasan_report mm/kasan/report.c:438 [inline] kasan_report+0x168/0x1e4 mm/kasan/report.c:451 kasan_check_range+0x274/0x2b4 mm/kasan/generic.c:189 memcpy+0x90/0xe8 mm/kasan/shadow.c:65 soft_cursor+0x384/0x6b4 drivers/video/fbdev/core/softcursor.c:70 bit_cursor+0x113c/0x1a64 drivers/video/fbdev/core/bitblit.c:377 fb_flashcursor+0x2d4/0x3e0 drivers/video/fbdev/core/fbcon.c:387 process_one_work+0x790/0x11b8 kernel/workqueue.c:2307 worker_thread+0x910/0x1034 kernel/workqueue.c:2454 kthread+0x37c/0x45c kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 ================================================================== wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023/05/28 00:20 | linux-5.15.y | 1fe619a7d252 | cf184559 | .config | console log | report | syz | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan-arm64 | KASAN: null-ptr-deref Read in soft_cursor |