syzbot

 sign-in | mailing list | source | docs
🐞 Open [196]
🐞 Fixed [42]
🐞 Invalid [470]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

general protection fault in perf_output_read

Status: public: reported C repro on 2019/04/11 08:44
Reported-by: syzbot+2fdea6d5f34048a60013@syzkaller.appspotmail.com
First crash: 2325d, last: 1820d
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 general protection fault in perf_output_read C 1 641d 1499d 0/1 upstream: reported C repro on 2020/10/14 09:13
android-414 general protection fault in perf_output_read 1 1997d 1997d 0/1 auto-closed as invalid on 2019/10/25 08:49

Sample crash report:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 15425 Comm: syz-executor226 Not tainted 4.9.202+ #0
task: 00000000eb5246db task.stack: 000000006651e46a
RIP: 0010:[<ffffffff813c5a4e>]  [<0000000023dd91f8>] perf_event_count kernel/events/core.c:3583 [inline]
RIP: 0010:[<ffffffff813c5a4e>]  [<0000000023dd91f8>] perf_output_read_group kernel/events/core.c:5742 [inline]
RIP: 0010:[<ffffffff813c5a4e>]  [<0000000023dd91f8>] perf_output_read+0x63e/0x12e0 kernel/events/core.c:5779
RSP: 0018:ffff8801d21971b8  EFLAGS: 00010207
RAX: 000000000000001b RBX: 0000000000000006 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff813c5a40 RDI: 00000000000000de
RBP: ffff8801d2197330 R08: 1ffff1003a8fb670 R09: ffffed003a8fb672
R10: ffffed003a8fb671 R11: ffff8801d47db38f R12: ffff8801d239bcc8
R13: ffff8801d21974c8 R14: dffffc0000000000 R15: ffff8801d239bc50
FS:  00007f967e68d700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000201f1000 CR3: 00000001ca791000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8801d21974d0 ffffed003a432e9a 0000000000000010
 0000000000000004 0000000000000010 ffffed003a432e9d 1ffff1003a432e45
 ffff8801cedf8020 ffff8801d21974e8 ffff8801d21974e0 ffff8801d2197298
Call Trace:
 [<0000000065f25232>] perf_output_sample+0x1142/0x17e0 kernel/events/core.c:5821
 [<000000009cbce5fa>] __perf_event_output kernel/events/core.c:6093 [inline]
 [<000000009cbce5fa>] perf_event_output_backward+0x129/0x240 kernel/events/core.c:6114
 [<00000000b0fb5408>] __perf_event_overflow+0x121/0x330 kernel/events/core.c:7208
 [<00000000f76acbe7>] perf_swevent_overflow+0x17c/0x210 kernel/events/core.c:7284
 [<000000002c89f399>] perf_swevent_event+0x1ac/0x280 kernel/events/core.c:7317
 [<0000000089687ad8>] do_perf_sw_event kernel/events/core.c:7425 [inline]
 [<0000000089687ad8>] ___perf_sw_event+0x299/0x4c0 kernel/events/core.c:7456
 [<00000000918d98f9>] __perf_sw_event+0x47/0x90 kernel/events/core.c:7468
 [<00000000e3723f91>] perf_sw_event include/linux/perf_event.h:1045 [inline]
 [<00000000e3723f91>] __do_page_fault+0x6cd/0xa60 arch/x86/mm/fault.c:1442
 [<00000000cea52fd9>] do_page_fault+0x28/0x30 arch/x86/mm/fault.c:1464
 [<00000000f715e020>] page_fault+0x25/0x30 arch/x86/entry/entry_64.S:956
 [<000000009a2efa98>] mem_read+0x52/0x70 fs/proc/base.c:906
 [<00000000bec54c6d>] do_loop_readv_writev.part.0+0xcc/0x2c0 fs/read_write.c:721
 [<00000000d3ae08a5>] do_loop_readv_writev fs/read_write.c:710 [inline]
 [<00000000d3ae08a5>] do_readv_writev+0x556/0x7a0 fs/read_write.c:876
 [<0000000057fd2132>] vfs_readv+0x86/0xc0 fs/read_write.c:900
 [<00000000e7b319f1>] do_preadv+0x19b/0x240 fs/read_write.c:977
 [<0000000031b8f518>] SYSC_preadv fs/read_write.c:1027 [inline]
 [<0000000031b8f518>] SyS_preadv+0x31/0x40 fs/read_write.c:1022
 [<000000004f16436b>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<000000000a3b0bea>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 74 08 3c 03 0f 8e 55 0a 00 00 41 83 bf 88 00 00 00 01 0f 84 09 07 00 00 e8 b0 cb f5 ff 48 8d bb d8 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 15 0a 00 00 48 8b 9b d8 00 00 00 48 85 db 
RIP  [<0000000023dd91f8>] perf_event_count kernel/events/core.c:3583 [inline]
RIP  [<0000000023dd91f8>] perf_output_read_group kernel/events/core.c:5742 [inline]
RIP  [<0000000023dd91f8>] perf_output_read+0x63e/0x12e0 kernel/events/core.c:5779
 RSP <ffff8801d21971b8>
---[ end trace d674fb4d01324679 ]---

Crashes (162):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/11/23 15:15 android-4.9 258971b8e1ac 598ca6c8 .config console log report syz C ci-android-49-kasan-gce-root
2019/06/15 03:48 https://android.googlesource.com/kernel/common android-4.9 0c1ee05e1e72 442206d7 .config console log report syz C ci-android-49-kasan-gce-root
2018/07/17 12:46 https://android.googlesource.com/kernel/common android-4.9 f540ce029f50 13761366 .config console log report syz C ci-android-49-kasan-gce-root
2018/11/29 20:33 https://android.googlesource.com/kernel/common android-4.9 c4f2aa8057c4 4b6d14f2 .config console log report syz ci-android-49-kasan-gce-root
2018/07/10 22:33 https://android.googlesource.com/kernel/common android-4.9 03c70feafdb2 2e0e3130 .config console log report syz ci-android-49-kasan-gce-root
2019/11/28 12:51 android-4.9 13ff5130ff6e 46869e3e .config console log report ci-android-49-kasan-gce-root
2019/11/25 19:52 android-4.9 13ff5130ff6e 371caf77 .config console log report ci-android-49-kasan-gce-root
2019/11/05 12:00 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 0f3ec414 .config console log report ci-android-49-kasan-gce-root
2019/11/04 17:36 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 76630fc9 .config console log report ci-android-49-kasan-gce-root
2019/10/30 14:31 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 5ea87a66 .config console log report ci-android-49-kasan-gce-root
2019/10/26 16:06 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 25bb509e .config console log report ci-android-49-kasan-gce-root
2019/10/25 13:36 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 d01bb02a .config console log report ci-android-49-kasan-gce-root
2019/10/23 10:41 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 d0686497 .config console log report ci-android-49-kasan-gce-root
2019/10/21 00:41 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 8c88c9c1 .config console log report ci-android-49-kasan-gce-root
2019/09/23 07:21 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 d96e88f3 .config console log report ci-android-49-kasan-gce-root
2019/09/17 11:34 https://android.googlesource.com/kernel/common android-4.9 23f878903720 13dcda9b .config console log report ci-android-49-kasan-gce-root
2019/07/23 14:23 https://android.googlesource.com/kernel/common android-4.9 cd46375d4f59 de453f34 .config console log report ci-android-49-kasan-gce-root
2019/07/18 23:36 https://android.googlesource.com/kernel/common android-4.9 5e2c340821b1 7bb222f7 .config console log report ci-android-49-kasan-gce-root
2019/06/14 12:32 https://android.googlesource.com/kernel/common android-4.9 0a8a3e5b4762 998ccc76 .config console log report ci-android-49-kasan-gce-root
2019/06/08 18:46 https://android.googlesource.com/kernel/common android-4.9 83ae225d5ce3 0159583c .config console log report ci-android-49-kasan-gce-root
2019/06/03 23:53 https://android.googlesource.com/kernel/common android-4.9 3434ddb20bf1 ce07a7ae .config console log report ci-android-49-kasan-gce-root
2019/06/03 20:40 https://android.googlesource.com/kernel/common android-4.9 3434ddb20bf1 63bf051f .config console log report ci-android-49-kasan-gce-root
2019/05/03 18:01 https://android.googlesource.com/kernel/common android-4.9 2dbf78bcd85b 1bfa09b9 .config console log report ci-android-49-kasan-gce-root
2019/05/01 18:40 https://android.googlesource.com/kernel/common android-4.9 3383326b935d 7516d9fa .config console log report ci-android-49-kasan-gce-root
2019/04/28 17:39 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/27 12:37 https://android.googlesource.com/kernel/common android-4.9 6cf3205cc803 b617407b .config console log report ci-android-49-kasan-gce-root
2019/04/19 17:06 https://android.googlesource.com/kernel/common android-4.9 5d68df32998c b0e8efcb .config console log report ci-android-49-kasan-gce-root
2019/04/16 01:45 https://android.googlesource.com/kernel/common android-4.9 fc67a895f0a5 505ab413 .config console log report ci-android-49-kasan-gce-root
2019/04/14 03:08 https://android.googlesource.com/kernel/common android-4.9 fc67a895f0a5 c402d8f1 .config console log report ci-android-49-kasan-gce-root
2019/04/13 18:28 https://android.googlesource.com/kernel/common android-4.9 fc67a895f0a5 c402d8f1 .config console log report ci-android-49-kasan-gce-root
2019/02/22 22:04 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba 6a5fcca4 .config console log report ci-android-49-kasan-gce-root
2019/02/22 06:55 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba 7ff74a98 .config console log report ci-android-49-kasan-gce-root
2019/02/19 19:41 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba 4df543c9 .config console log report ci-android-49-kasan-gce-root
2019/02/15 17:49 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba f6f233c0 .config console log report ci-android-49-kasan-gce-root
2019/02/14 04:13 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba 6a46f448 .config console log report ci-android-49-kasan-gce-root
2019/02/13 02:37 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba 1eedba36 .config console log report ci-android-49-kasan-gce-root
2019/02/10 05:20 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba b4f792e4 .config console log report ci-android-49-kasan-gce-root
2019/02/09 23:01 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba d75f7686 .config console log report ci-android-49-kasan-gce-root
2019/02/08 05:28 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba aa4feb03 .config console log report ci-android-49-kasan-gce-root
2019/02/07 23:22 https://android.googlesource.com/kernel/common android-4.9 1597fdfe52ba aa4feb03 .config console log report ci-android-49-kasan-gce-root
2019/02/07 10:28 https://android.googlesource.com/kernel/common android-4.9 32e6695e35df aa4feb03 .config console log report ci-android-49-kasan-gce-root
2019/02/05 11:33 https://android.googlesource.com/kernel/common android-4.9 6fffec46611b d672172c .config console log report ci-android-49-kasan-gce-root
2019/02/04 19:34 https://android.googlesource.com/kernel/common android-4.9 cdba725fc2d8 d672172c .config console log report ci-android-49-kasan-gce-root
2019/02/04 12:29 https://android.googlesource.com/kernel/common android-4.9 5aa04bc73fa2 d672172c .config console log report ci-android-49-kasan-gce-root
2019/01/29 07:49 https://android.googlesource.com/kernel/common android-4.9 fe0eb27ac6e2 aa432daf .config console log report ci-android-49-kasan-gce-root
2019/01/28 22:23 https://android.googlesource.com/kernel/common android-4.9 fe0eb27ac6e2 aa432daf .config console log report ci-android-49-kasan-gce-root
2019/01/24 21:42 https://android.googlesource.com/kernel/common android-4.9 046daa57dd62 bfab9cd8 .config console log report ci-android-49-kasan-gce-root
2018/07/10 20:53 https://android.googlesource.com/kernel/common android-4.9 03c70feafdb2 2e0e3130 .config console log report ci-android-49-kasan-gce-root
* Struck through repros no longer work on HEAD.