Hello, syzbot found the following issue on: HEAD commit: 3f01e9fed845 Merge tag 'linux-watchdog-6.5-rc2' of git://w.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=14bac16aa80000 kernel config: https://syzkaller.appspot.com/x/.config?x=1542573e31cfbec5 dashboard link: https://syzkaller.appspot.com/bug?extid=cba21d50095623218389 compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15dd215aa80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14530318a80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4f212a7e36fe/disk-3f01e9fe.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/de6b12daf908/vmlinux-3f01e9fe.xz kernel image: https://storage.googleapis.com/syzbot-assets/2c1992ff2aaa/bzImage-3f01e9fe.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+cba21d50095623218389@xxxxxxxxxxxxxxxxxxxxxxxxx ===================================================== BUG: KMSAN: uninit-value in af_alg_free_sg crypto/af_alg.c:545 [inline] BUG: KMSAN: uninit-value in af_alg_free_areq_sgls crypto/af_alg.c:778 [inline] BUG: KMSAN: uninit-value in af_alg_free_resources+0x3d1/0xf60 crypto/af_alg.c:1117 af_alg_free_sg crypto/af_alg.c:545 [inline] af_alg_free_areq_sgls crypto/af_alg.c:778 [inline] af_alg_free_resources+0x3d1/0xf60 crypto/af_alg.c:1117 _skcipher_recvmsg crypto/algif_skcipher.c:144 [inline] skcipher_recvmsg+0x6a0/0x1a20 crypto/algif_skcipher.c:157 sock_recvmsg_nosec net/socket.c:1020 [inline] sock_recvmsg net/socket.c:1041 [inline] __sys_recvfrom+0x505/0x810 net/socket.c:2186 __do_sys_recvfrom net/socket.c:2204 [inline] __se_sys_recvfrom net/socket.c:2200 [inline] __x64_sys_recvfrom+0x126/0x1d0 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767 slab_alloc_node mm/slub.c:3470 [inline] __kmem_cache_alloc_node+0x536/0x8d0 mm/slub.c:3509 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc+0x121/0x3c0 mm/slab_common.c:998 kmalloc include/linux/slab.h:586 [inline] sock_kmalloc+0x128/0x1c0 net/core/sock.c:2683 af_alg_alloc_areq+0x41/0x2a0 crypto/af_alg.c:1188 _skcipher_recvmsg crypto/algif_skcipher.c:71 [inline] skcipher_recvmsg+0x514/0x1a20 crypto/algif_skcipher.c:157 sock_recvmsg_nosec net/socket.c:1020 [inline] sock_recvmsg net/socket.c:1041 [inline] __sys_recvfrom+0x505/0x810 net/socket.c:2186 __do_sys_recvfrom net/socket.c:2204 [inline] __se_sys_recvfrom net/socket.c:2200 [inline] __x64_sys_recvfrom+0x126/0x1d0 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd CPU: 0 PID: 5031 Comm: syz-executor370 Not tainted 6.5.0-rc1-syzkaller-00006-g3f01e9fed845 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 ===================================================== --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, 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 change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
