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WARNING in notify_change2

Status: public: reported C repro on 2019/04/11 00:00
Reported-by: syzbot+58c5bb91159bbbc561cd@syzkaller.appspotmail.com
First crash: 2275d, last: 2030d
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-49 WARNING in notify_change2 C 560 1977d 2051d 0/3 public: reported C repro on 2019/04/11 08:44

Sample crash report:
random: sshd: uninitialized urandom read (32 bytes read)
audit: type=1400 audit(1554786733.724:7): avc:  denied  { map } for  pid=1799 comm="syz-executor842" path="/root/syz-executor842174547" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1806 at fs/attr.c:213 notify_change2+0xab8/0xd70 fs/attr.c:213
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 1806 Comm: syz-executor842 Not tainted 4.14.111+ #51
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
 panic+0x1d9/0x3c2 kernel/panic.c:182
 __warn.cold+0x2f/0x3b kernel/panic.c:546
Kernel Offset: 0x8800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..

Crashes (959):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/04/09 05:17 android-4.14 d8414567db62 995065ff .config console log report syz C ci-android-414-kasan-gce-root
2019/04/05 00:40 android-4.14 b175f02b5457 e5d1b3ac .config console log report syz C ci-android-414-kasan-gce-root
2018/11/30 08:17 android-4.14 51164110fa6e 66071e27 .config console log report syz C ci-android-414-kasan-gce-root
2018/09/26 02:00 android-4.14 666c420fa3ea b7e11289 .config console log report syz C ci-android-414-kasan-gce-root
2019/05/01 23:08 android-4.14 c680586c4fb7 7516d9fa .config console log report ci-android-414-kasan-gce-root
2019/05/01 10:35 android-4.14 c680586c4fb7 618456b4 .config console log report ci-android-414-kasan-gce-root
2019/04/30 07:26 android-4.14 ffa22221c473 20f16bef .config console log report ci-android-414-kasan-gce-root
2019/04/28 05:48 android-4.14 ffa22221c473 b617407b .config console log report ci-android-414-kasan-gce-root
2019/04/27 18:08 android-4.14 ffa22221c473 b617407b .config console log report ci-android-414-kasan-gce-root
2019/04/27 15:56 android-4.14 ffa22221c473 b617407b .config console log report ci-android-414-kasan-gce-root
2019/04/27 11:38 android-4.14 ffa22221c473 b617407b .config console log report ci-android-414-kasan-gce-root
2019/04/26 23:11 android-4.14 ffa22221c473 b617407b .config console log report ci-android-414-kasan-gce-root
2019/04/26 22:01 android-4.14 ffa22221c473 b617407b .config console log report ci-android-414-kasan-gce-root
2019/04/26 11:04 android-4.14 ffa22221c473 b617407b .config console log report ci-android-414-kasan-gce-root
2019/04/25 23:44 android-4.14 ffa22221c473 f46aabc8 .config console log report ci-android-414-kasan-gce-root
2019/04/25 22:10 android-4.14 ffa22221c473 f46aabc8 .config console log report ci-android-414-kasan-gce-root
2019/04/25 05:45 android-4.14 ffa22221c473 8e3c52b1 .config console log report ci-android-414-kasan-gce-root
2019/04/24 22:41 android-4.14 ffa22221c473 8e3c52b1 .config console log report ci-android-414-kasan-gce-root
2019/04/24 02:49 android-4.14 ffa22221c473 4d3d6a50 .config console log report ci-android-414-kasan-gce-root
2019/04/23 08:30 android-4.14 fde41616bce4 53199d6e .config console log report ci-android-414-kasan-gce-root
2019/04/23 01:11 android-4.14 fde41616bce4 53199d6e .config console log report ci-android-414-kasan-gce-root
2019/04/22 22:00 android-4.14 fde41616bce4 53199d6e .config console log report ci-android-414-kasan-gce-root
2019/04/22 19:47 android-4.14 fde41616bce4 0a77c33c .config console log report ci-android-414-kasan-gce-root
2019/04/21 19:32 android-4.14 fde41616bce4 b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/21 12:55 android-4.14 fde41616bce4 b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/21 05:40 android-4.14 fde41616bce4 b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/20 15:05 android-4.14 4353393c9d4a b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/20 10:10 android-4.14 4353393c9d4a b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/20 05:38 android-4.14 4353393c9d4a b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/19 17:39 android-4.14 cec361536f1e b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/19 16:07 android-4.14 cec361536f1e b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/19 14:26 android-4.14 cec361536f1e b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/19 13:14 android-4.14 cec361536f1e b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/19 08:37 android-4.14 cec361536f1e b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/18 12:46 android-4.14 d9a62b438b48 b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/17 08:48 android-4.14 efe836537cf2 b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/17 04:54 android-4.14 efe836537cf2 b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/16 23:19 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/16 14:32 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/16 06:15 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/16 03:57 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/15 17:31 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/15 16:10 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/15 03:25 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/14 18:04 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/14 16:45 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/14 15:27 android-4.14 efe836537cf2 505ab413 .config console log report ci-android-414-kasan-gce-root
2019/04/14 09:15 android-4.14 efe836537cf2 c402d8f1 .config console log report ci-android-414-kasan-gce-root
2019/04/14 06:59 android-4.14 efe836537cf2 c402d8f1 .config console log report ci-android-414-kasan-gce-root
2019/04/14 05:45 android-4.14 efe836537cf2 c402d8f1 .config console log report ci-android-414-kasan-gce-root
2019/04/14 01:31 android-4.14 efe836537cf2 c402d8f1 .config console log report ci-android-414-kasan-gce-root
2019/04/14 00:20 android-4.14 efe836537cf2 c402d8f1 .config console log report ci-android-414-kasan-gce-root
2018/08/30 14:28 android-4.14 47350a9f13c6 938220fd .config console log report ci-android-414-kasan-gce-root
* Struck through repros no longer work on HEAD.