On 5/27/24 7:22 AM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 614da38e2f7a Merge tag 'hid-for-linus-2024051401' of git:/.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=11b9b972980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=f5d2cbf33633f507 > dashboard link: https://syzkaller.appspot.com/bug?extid=b1647099e82b3b349fbf > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > > Unfortunately, I don't have any reproducer for this issue yet. > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/89eafb874b71/disk-614da38e.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/356000512ad9/vmlinux-614da38e.xz > kernel image: https://storage.googleapis.com/syzbot-assets/839c73939115/bzImage-614da38e.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+b1647099e82b3b349fbf@xxxxxxxxxxxxxxxxxxxxxxxxx > > ===================================================== > BUG: KMSAN: uninit-value in io_req_cqe_overflow io_uring/io_uring.c:810 [inline] > BUG: KMSAN: uninit-value in io_req_complete_post io_uring/io_uring.c:937 [inline] > BUG: KMSAN: uninit-value in io_issue_sqe+0x1f1b/0x22c0 io_uring/io_uring.c:1763 Should be fixed by: https://lore.kernel.org/io-uring/c52d9b19-7fd7-4fb1-b396-632b9f0f612d@xxxxxxxxx/ #syz fix: io_uring/net: assign kmsg inq/flags before buffer selection -- Jens Axboe
