Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: use-after-free Read in snd_mixer_oss_get_volume1 sound | C | inconclusive | 1 | 1114d | 1110d | 20/28 | fixed on 2022/03/08 16:11 |
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Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: use-after-free Read in snd_mixer_oss_get_volume1 sound | C | inconclusive | 1 | 1114d | 1110d | 20/28 | fixed on 2022/03/08 16:11 |
Created | Duration | User | Patch | Repo | Result |
---|---|---|---|---|---|
2021/11/07 02:12 | 11m | bisect fix | linux-4.19.y | error job log | |
2021/10/08 01:45 | 26m | bisect fix | linux-4.19.y | OK (0) job log log |
================================================================== BUG: KASAN: use-after-free in snd_mixer_oss_get_volume1+0x574/0x610 sound/core/oss/mixer_oss.c:612 Read of size 4 at addr ffff888098918084 by task syz-executor087/8128 CPU: 1 PID: 8128 Comm: syz-executor087 Not tainted 4.19.206-syzkaller #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+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load4_noabort+0x88/0x90 mm/kasan/report.c:432 snd_mixer_oss_get_volume1+0x574/0x610 sound/core/oss/mixer_oss.c:612 snd_mixer_oss_get_volume sound/core/oss/mixer_oss.c:272 [inline] snd_mixer_oss_ioctl1+0x236/0x18f0 sound/core/oss/mixer_oss.c:372 snd_mixer_oss_ioctl+0x40/0x50 sound/core/oss/mixer_oss.c:382 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440339 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdb4003348 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 0000000000440339 RDX: 0000000000000000 RSI: 0000000080254d18 RDI: 0000000000000003 RBP: 00000000004830b6 R08: 0000000000000001 R09: 0000000000000001 R10: 00007ffdb4002dc0 R11: 0000000000000246 R12: 0000000000008a17 R13: 00007ffdb400335c R14: 00007ffdb4003370 R15: 00007ffdb4003360 Allocated by task 8127: kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] snd_mixer_oss_build_input+0x640/0xd80 sound/core/oss/mixer_oss.c:1092 snd_mixer_oss_proc_write+0x37e/0x530 sound/core/oss/mixer_oss.c:1232 snd_info_text_entry_release+0xfa/0x260 sound/core/info.c:425 close_pdeo.part.0+0xda/0x2f0 fs/proc/inode.c:176 close_pdeo fs/proc/inode.c:401 [inline] proc_reg_release+0x21e/0x270 fs/proc/inode.c:395 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 __do_sys_exit_group kernel/exit.c:978 [inline] __se_sys_exit_group kernel/exit.c:976 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:976 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 8125: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 snd_mixer_oss_slot_free+0xf3/0x130 sound/core/oss/mixer_oss.c:955 mixer_slot_clear+0x5a/0xb0 sound/core/oss/mixer_oss.c:963 snd_mixer_oss_build_input+0x7d3/0xd80 sound/core/oss/mixer_oss.c:1100 snd_mixer_oss_proc_write+0x37e/0x530 sound/core/oss/mixer_oss.c:1232 snd_info_text_entry_release+0xfa/0x260 sound/core/info.c:425 close_pdeo.part.0+0xda/0x2f0 fs/proc/inode.c:176 close_pdeo fs/proc/inode.c:401 [inline] proc_reg_release+0x21e/0x270 fs/proc/inode.c:395 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 __do_sys_exit_group kernel/exit.c:978 [inline] __se_sys_exit_group kernel/exit.c:976 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:976 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff888098918080 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 4 bytes inside of 96-byte region [ffff888098918080, ffff8880989180e0) The buggy address belongs to the page: page:ffffea0002624600 count:1 mapcount:0 mapping:ffff88813bff04c0 index:0x0 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea0002bee108 ffffea0002aea848 ffff88813bff04c0 raw: 0000000000000000 ffff888098918000 0000000100000020 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888098917f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888098918000: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc >ffff888098918080: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff888098918100: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff888098918180: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/09/08 01:45 | linux-4.19.y | b172b44fcb17 | 064c9eb7 | .config | console log | report | syz | C | ci2-linux-4-19 | KASAN: use-after-free Read in snd_mixer_oss_get_volume1 | ||
2021/09/08 00:31 | linux-4.19.y | b172b44fcb17 | 064c9eb7 | .config | console log | report | info | ci2-linux-4-19 | KASAN: use-after-free Read in snd_mixer_oss_get_volume1 |