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AHgh+RoPyQ5EpcXKtZiEoW2xRunyx385BuSKV3QZx++z4oclpTY3o/jT2tvlCX4w1BAkD9SP8nAJ6hGRRpxw4rM=@vger.kernel.org X-Gm-Message-State: AOJu0Yz56vXtIlRPq/7OVD1/mh9ueNTXD6+Cy+s0MVqz/+a+8AbE1ZLG Hi9UymMVti0tgFSXl1VUdMJVWl8JsbZGHC2RiwUXQLOlVT2z4IxPB5pGCp1+bsOhm7U1til1/SO 7gSWGl4WhiNi5R+sjjm2be/92Tqrpgaq4DPR97EAplhHEIuBfOLGoOiUrn28= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1990:b0:6ae:84e6:2de0 with SMTP id 006d021491bc7-6b042143dd7mr7749464eaf.26.1786302865071; Sun, 09 Aug 2026 12:14:25 -0700 (PDT) Date: Sun, 09 Aug 2026 12:14:25 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a78d191.b50370da.49fe0.0041.GAE@google.com> Subject: [syzbot] [media?] [dri?] WARNING in udmabuf_create From: syzbot To: christian.koenig@amd.com, dri-devel@lists.freedesktop.org, kraxel@redhat.com, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, sumit.semwal@linaro.org, syzkaller-bugs@googlegroups.com, vivek.kasireddy@intel.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 6b8c8af514d7 Add linux-next specific files for 20260807 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=10b34149580000 kernel config: https://syzkaller.appspot.com/x/.config?x=6d343b54cc50df0f dashboard link: https://syzkaller.appspot.com/bug?extid=bfeed181d1ce9ec87a8f compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11e8c079580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/71ff4edcb608/disk-6b8c8af5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1f5fa331d8f2/vmlinux-6b8c8af5.xz kernel image: https://storage.googleapis.com/syzbot-assets/f993558ec63b/bzImage-6b8c8af5.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bfeed181d1ce9ec87a8f@syzkaller.appspotmail.com ------------[ cut here ]------------ !(flags & __GFP_NOWARN) WARNING: mm/slub.c:7013 at __kvmalloc_node_noprof+0x792/0x820 mm/slub.c:7013, CPU#1: syz.0.17/5840 Modules linked in: CPU: 1 UID: 0 PID: 5840 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__kvmalloc_node_noprof+0x792/0x820 mm/slub.c:7013 Code: ff 48 c7 c7 70 f7 c8 8e 48 89 de e8 a8 3d eb 02 e9 1f fc ff ff 48 c7 c7 b0 f7 c8 8e 48 89 de e8 94 3d eb 02 e9 50 fc ff ff 90 <0f> 0b 90 31 db e9 08 fe ff ff 90 0f 0b 90 e9 57 ff ff ff 49 83 7f RSP: 0018:ffffc900044ffae0 EFLAGS: 00010246 RAX: 0000000000000100 RBX: 0000000000000000 RCX: 0000000080000001 RDX: 0000008000000000 RSI: ffffffff8c4c7660 RDI: ffffffff8c4c7620 RBP: 00000000ffffffff R08: 00000000000028c0 R09: 00000000ffffffff R10: 0000000000000006 R11: 0000000000000000 R12: 0000008000000000 R13: 00000000000028c0 R14: 0000001000000000 R15: ffffffff865110fc FS: 0000555557138500(0000) GS:ffff88812500c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb692c70000 CR3: 0000000079676000 CR4: 00000000003526f0 Call Trace: init_udmabuf drivers/dma-buf/udmabuf.c:193 [inline] udmabuf_create+0x2dc/0xf50 drivers/dma-buf/udmabuf.c:386 udmabuf_ioctl_create drivers/dma-buf/udmabuf.c:465 [inline] udmabuf_ioctl+0x1f3/0x300 drivers/dma-buf/udmabuf.c:496 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x510 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb692d9e0d9 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:00007ffc7e6eab08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb693025fa0 RCX: 00007fb692d9e0d9 RDX: 0000200000000200 RSI: 0000000040187542 RDI: 0000000000000003 RBP: 00007fb692e35024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb693025fac R14: 00007fb693025fa0 R15: 00007fb693025fa0 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup