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AFNElJ+jiVK02D8o6dO+cBjHwFuoOZAkDCEuejyT3YhpsMrsA5l61KoU8AEIdOJWxD3sf0jZR8q4QOzOi/Gk5rI=@vger.kernel.org X-Gm-Message-State: AOJu0YyWgkxDDibnUPetkjjXIaY2u8id4SVD7ORJKDPOJcNt8q5KkmkY 8LeRZFnNpQwff+aVx4tLgJh0w4EBGJlgaXOJs3HePvZN8Rrv85s2wCUwOAcNrOTj/soHv8HB6Wt 2f6DYwsCqjSQZuxGMlK06ZN4PF04gMJlB/JqPsKxm4NqTtpEy99ifW73p7aM= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a4a:df02:0:b0:696:21e6:8963 with SMTP id 006d021491bc7-69b6785e3a2mr2769728eaf.30.1778644985093; Tue, 12 May 2026 21:03:05 -0700 (PDT) Date: Tue, 12 May 2026 21:03:05 -0700 In-Reply-To: <20260513031323.578-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a03f7f9.170a0220.d5671.0015.GAE@google.com> Subject: Re: [syzbot] [dri?] WARNING in drm_prime_destroy_file_private (3) From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in drm_prime_destroy_file_private ------------[ cut here ]------------ !RB_EMPTY_ROOT(&prime_fpriv->dmabufs) WARNING: drivers/gpu/drm/drm_prime.c:224 at drm_prime_destroy_file_private+0x48/0x60 drivers/gpu/drm/drm_prime.c:224, CPU#0: syz.0.17/6327 Modules linked in: CPU: 0 UID: 0 PID: 6327 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:drm_prime_destroy_file_private+0x48/0x60 drivers/gpu/drm/drm_prime.c:224 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 2b 48 8b 83 88 00 00 00 48 85 c0 75 0b e8 d4 d0 65 fc 5b e9 0e e5 ea 05 e8 c9 d0 65 fc 90 <0f> 0b 90 e8 c0 d0 65 fc 5b c3 cc cc cc cc e8 55 8f d3 fc eb ce 0f RSP: 0018:ffffc900033cfc90 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802d0da328 RCX: ffffffff8b8be29d RDX: ffff8880776fca00 RSI: ffffffff85a2d617 RDI: ffff88802d0da3b0 RBP: ffff88802d0da000 R08: 0000000000000001 R09: fffff52000679f72 R10: ffffc900033cfb97 R11: ffffffff82763704 R12: ffff8880274ac000 R13: ffff88802d0da260 R14: 0000000000000002 R15: ffff88802d0da288 FS: 0000555556830500(0000) GS:ffff888124372000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feba2986400 CR3: 0000000033a76000 CR4: 00000000003526f0 Call Trace: drm_file_free.part.0+0x7cf/0xc00 drivers/gpu/drm/drm_file.c:268 drm_file_free drivers/gpu/drm/drm_file.c:237 [inline] drm_close_helper.isra.0+0x186/0x200 drivers/gpu/drm/drm_file.c:289 drm_release+0x1ab/0x360 drivers/gpu/drm/drm_file.c:437 __fput+0x3ff/0xb50 fs/file_table.c:510 task_work_run+0x150/0x240 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0x107/0x4f0 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x706/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7feba299cdd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd43dfae88 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007ffd43dfaf70 RCX: 00007feba299cdd9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 000000000001dafd R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b31020000 R11: 0000000000000246 R12: 00007ffd43dfafb0 R13: 00007feba2c15fac R14: 000000000001db37 R15: 00007feba2c15fa0 Tested on: commit: 1d5dcaa3 Merge tag 'probes-fixes-v7.1-rc3' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13baa3ce580000 kernel config: https://syzkaller.appspot.com/x/.config?x=59da38148f3a3d24 dashboard link: https://syzkaller.appspot.com/bug?extid=d7c9eed171647e421013 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=11187dba580000