syzbot


WARNING in untrack_pfn

Status: public: reported syz repro on 2019/04/14 09:28
Reported-by: syzbot+0830ee7a7f64fa7f2a45@syzkaller.appspotmail.com
First crash: 2090d, last: 1688d
Similar bugs (9)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in untrack_pfn kernel C done error 128 114d 2186d 0/27 auto-obsoleted due to no activity on 2024/07/03 15:42
linux-5.15 WARNING in untrack_pfn origin:lts-only C done 7 222d 364d 0/3 upstream: reported C repro on 2023/07/19 07:05
linux-4.19 WARNING in untrack_pfn C error 24 547d 1808d 0/1 upstream: reported C repro on 2019/08/05 09:38
linux-4.14 WARNING in untrack_pfn C inconclusive 27 539d 1800d 0/1 upstream: reported C repro on 2019/08/13 08:40
android-44 WARNING in untrack_pfn C 211 1954d 2327d 0/2 closed as invalid on 2019/03/16 01:21
android-414 WARNING in untrack_pfn syz 1 2034d 1923d 0/1 public: reported syz repro on 2019/04/13 00:01
linux-6.1 WARNING in untrack_pfn (2) origin:lts-only C done 4 194d 317d 0/3 upstream: reported C repro on 2023/09/04 06:46
linux-6.1 WARNING in untrack_pfn 2 452d 460d 0/3 auto-obsoleted due to no activity on 2023/08/21 02:48
android-44 WARNING in untrack_pfn (2) C 71 1688d 1924d 0/2 public: reported C repro on 2019/04/11 08:44

Sample crash report:
audit: type=1400 audit(1545521427.348:5): avc:  denied  { associate } for  pid=2111 comm="syz-executor4" name="syz4" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6988 at arch/x86/mm/pat.c:1019 untrack_pfn+0x242/0x290 arch/x86/mm/pat.c:1019
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 6988 Comm: syz-executor2 Not tainted 4.9.147+ #86
 ffff8801d27ef660 ffffffff81b43be9 ffffffff82a39060 00000000ffffffff
 ffffffff82a34400 0000000000000001 0000000000000009 ffff8801d27ef720
 ffffffff813f7745 0000000041b58ab3 ffffffff82e2ac3b ffffffff813f7586
Call Trace:
 [<ffffffff81b43be9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b43be9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff813f7745>] panic+0x1bf/0x39f kernel/panic.c:179
 [<ffffffff813f7982>] __warn.cold.8+0x2f/0x2f kernel/panic.c:542
 [<ffffffff810dc0bc>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff810bea52>] untrack_pfn+0x242/0x290 arch/x86/mm/pat.c:1019
 [<ffffffff8149a791>] unmap_single_vma+0x141/0x170 mm/memory.c:1315
 [<ffffffff8149ae71>] unmap_vmas+0x81/0xd0 mm/memory.c:1366
 [<ffffffff814b0f4c>] exit_mmap+0x1cc/0x3a0 mm/mmap.c:3021
 [<ffffffff810d26ed>] __mmput kernel/fork.c:884 [inline]
 [<ffffffff810d26ed>] mmput+0xcd/0x360 kernel/fork.c:906
 [<ffffffff810e6c19>] exit_mm kernel/exit.c:514 [inline]
 [<ffffffff810e6c19>] do_exit+0x6c9/0x2a50 kernel/exit.c:820
 [<ffffffff810ed431>] do_group_exit+0x111/0x300 kernel/exit.c:937
 [<ffffffff8110ebe1>] get_signal+0x4e1/0x1460 kernel/signal.c:2321
 [<ffffffff81052b35>] do_signal+0x95/0x1b00 arch/x86/kernel/signal.c:807
 [<ffffffff81003e2e>] exit_to_usermode_loop+0x10e/0x150 arch/x86/entry/common.c:158
 [<ffffffff81005932>] prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 [<ffffffff81005932>] syscall_return_slowpath arch/x86/entry/common.c:263 [inline]
 [<ffffffff81005932>] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290
 [<ffffffff8281a4d3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (35):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/12/22 23:41 https://android.googlesource.com/kernel/common android-4.9 a2f9236e8131 e3bd7ab8 .config console log report syz ci-android-49-kasan-gce-root
2018/12/22 23:15 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 e3bd7ab8 .config console log report syz ci-android-49-kasan-gce
2018/12/22 23:43 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 e3bd7ab8 .config console log report syz ci-android-49-kasan-gce-386
2018/11/15 13:26 https://android.googlesource.com/kernel/common android-4.9 109a48ed2f69 5f5f6d14 .config console log report syz ci-android-49-kasan-gce-386
2019/12/03 20:59 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 ae13a849 .config console log report ci-android-49-kasan-gce
2019/12/02 08:22 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 f879db37 .config console log report ci-android-49-kasan-gce
2019/11/27 01:48 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 1048481f .config console log report ci-android-49-kasan-gce
2019/11/24 00:12 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 598ca6c8 .config console log report ci-android-49-kasan-gce
2019/11/20 00:42 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 5bc70212 .config console log report ci-android-49-kasan-gce
2019/11/11 07:38 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 dc438b91 .config console log report ci-android-49-kasan-gce
2019/11/08 06:47 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 f39aff9e .config console log report ci-android-49-kasan-gce
2019/11/04 21:34 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 76630fc9 .config console log report ci-android-49-kasan-gce
2019/11/03 03:47 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 a41ca8fa .config console log report ci-android-49-kasan-gce
2019/10/20 08:40 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 8c88c9c1 .config console log report ci-android-49-kasan-gce
2019/10/17 21:34 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 8c88c9c1 .config console log report ci-android-49-kasan-gce
2019/10/15 04:11 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 05ad7292 .config console log report ci-android-49-kasan-gce
2019/07/18 15:41 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 7bb222f7 .config console log report ci-android-49-kasan-gce
2019/06/26 02:14 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 0a8d1a96 .config console log report ci-android-49-kasan-gce
2019/06/15 22:05 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 442206d7 .config console log report ci-android-49-kasan-gce
2019/06/13 08:25 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 3f4e812b .config console log report ci-android-49-kasan-gce
2019/06/10 02:51 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 0159583c .config console log report ci-android-49-kasan-gce
2019/04/23 23:53 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 4d3d6a50 .config console log report ci-android-49-kasan-gce
2019/04/07 08:43 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 c34fde03 .config console log report ci-android-49-kasan-gce
2019/02/24 23:19 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 7a06e792 .config console log report ci-android-49-kasan-gce
2019/02/03 21:29 https://android.googlesource.com/kernel/common android-4.9 5aa04bc73fa2 c198d5dd .config console log report ci-android-49-kasan-gce-root
2018/12/22 22:57 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 e3bd7ab8 .config console log report ci-android-49-kasan-gce
2018/12/15 16:19 https://android.googlesource.com/kernel/common android-4.9 e9a34dcec994 c9128939 .config console log report ci-android-49-kasan-gce-root
2019/10/12 08:43 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 426631dd .config console log report ci-android-49-kasan-gce-386
2019/09/03 20:47 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 48448e71 .config console log report ci-android-49-kasan-gce-386
2019/07/23 03:11 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 55e0c077 .config console log report ci-android-49-kasan-gce-386
2019/07/01 17:12 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 907bf746 .config console log report ci-android-49-kasan-gce-386
2019/05/17 05:14 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 7fb690f3 .config console log report ci-android-49-kasan-gce-386
2018/11/19 12:53 https://android.googlesource.com/kernel/common android-4.9 109a48ed2f69 adf636a8 .config console log report ci-android-49-kasan-gce-386
2018/11/15 10:19 https://android.googlesource.com/kernel/common android-4.9 109a48ed2f69 5f5f6d14 .config console log report ci-android-49-kasan-gce-386
2018/10/27 19:30 https://android.googlesource.com/kernel/common android-4.9 4ba3f69128be 8efba39a .config console log report ci-android-49-kasan-gce-386
* Struck through repros no longer work on HEAD.