syzbot


WARNING in drm_prime_destroy_file_private (2)

Status: upstream: reported C repro on 2023/12/27 20:51
Subsystems: dri
[Documentation on labels]
Reported-by: syzbot+59dcc2e7283a6f5f5ba1@syzkaller.appspotmail.com
First crash: 115d, last: 44d
Cause bisection: introduced by (bisect log) :
commit ea4452de2ae987342fadbdd2c044034e6480daad
Author: Qi Zheng <zhengqi.arch@bytedance.com>
Date: Fri Nov 18 10:00:11 2022 +0000

  mm: fix unexpected changes to {failslab|fail_page_alloc}.attr

Crash: WARNING in drm_prime_destroy_file_private (log)
Repro: C syz .config
  
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly dri report (Mar 2024) 0 (1) 2024/03/05 11:09
[syzbot] [dri?] WARNING in drm_prime_destroy_file_private (2) 6 (11) 2024/01/03 15:12
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in drm_prime_destroy_file_private dri 1 770d 766d 0/26 auto-closed as invalid on 2022/07/06 07:47
linux-4.14 WARNING in drm_prime_destroy_file_private C error 7 595d 1210d 0/1 upstream: reported C repro on 2020/12/23 07:13
linux-4.19 WARNING in drm_prime_destroy_file_private (2) C error 2 718d 718d 0/1 upstream: reported C repro on 2022/04/29 07:43
linux-4.19 WARNING in drm_prime_destroy_file_private syz done 6 1005d 1197d 1/1 fixed on 2021/08/15 11:28
Last patch testing requests (5)
Created Duration User Patch Repo Result
2024/01/07 02:16 20m retest repro upstream report log
2023/12/30 01:59 46m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master OK log
2023/12/30 01:04 17m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master report log
2023/12/29 11:29 53m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master report log
2023/12/28 11:56 14m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master report log
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2024/03/03 15:30 2h21m bisect fix upstream job log (0) log

Sample crash report:
R10: 0000000000000000 R11: 0000000000000246 R12: 00007efe98069194
R13: 00007efe97fd2210 R14: 0000000000000002 R15: 6972642f7665642f
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5107 at drivers/gpu/drm/drm_prime.c:227 drm_prime_destroy_file_private+0x43/0x60 drivers/gpu/drm/drm_prime.c:227
Modules linked in:
CPU: 0 PID: 5107 Comm: syz-executor227 Not tainted 6.7.0-rc6-syzkaller-00248-g5254c0cbc92d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:drm_prime_destroy_file_private+0x43/0x60 drivers/gpu/drm/drm_prime.c:227
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 21 48 8b 83 90 00 00 00 48 85 c0 75 06 5b e9 13 f1 93 fc e8 0e f1 93 fc 90 <0f> 0b 90 5b e9 04 f1 93 fc e8 3f 9b ea fc eb d8 66 66 2e 0f 1f 84
RSP: 0018:ffffc90003bdf9e0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888019f28378 RCX: ffffc90003bdf9b0
RDX: ffff888018ff9dc0 RSI: ffffffff84f380c2 RDI: ffff888019f28408
RBP: ffff888019f28000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f193a57 R11: 0000000000000000 R12: ffff88814829a000
R13: ffff888019f282a8 R14: ffff88814829a068 R15: ffff88814829a0a0
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe98050410 CR3: 000000006d1ff000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 drm_file_free.part.0+0x738/0xb90 drivers/gpu/drm/drm_file.c:290
 drm_file_free drivers/gpu/drm/drm_file.c:247 [inline]
 drm_close_helper.isra.0+0x180/0x1f0 drivers/gpu/drm/drm_file.c:307
 drm_release+0x22a/0x4f0 drivers/gpu/drm/drm_file.c:494
 __fput+0x270/0xb70 fs/file_table.c:394
 task_work_run+0x14d/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa8a/0x2ad0 kernel/exit.c:869
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1018
 get_signal+0x23b5/0x2790 kernel/signal.c:2904
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x121/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
 do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7efe98014769
Code: Unable to access opcode bytes at 0x7efe9801473f.
RSP: 002b:00007efe97fd2208 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007efe9809c408 RCX: 00007efe98014769
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007efe9809c408
RBP: 00007efe9809c400 R08: 0000000000003131 R09: 0000000000003131
R10: 0000000000000000 R11: 0000000000000246 R12: 00007efe98069194
R13: 00007efe97fd2210 R14: 0000000000000002 R15: 6972642f7665642f
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/23 21:12 upstream 5254c0cbc92d fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_prime_destroy_file_private
2023/12/23 20:47 upstream 5254c0cbc92d fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_prime_destroy_file_private
* Struck through repros no longer work on HEAD.