Hello, syzbot found the following issue on: HEAD commit: 9eaa88c7036e Merge tag 'libata-5.16-rc6' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10ed4143b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=10f3f669b8093e95 dashboard link: https://syzkaller.appspot.com/bug?extid=bb73e71cf4b8fd376a4f compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=112d6ca5b00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17393549b00000 The issue was bisected to: commit 38207a5e81230d6ffbdd51e5fa5681be5116dcae Author: John Fastabend <john.fastabend@xxxxxxxxx> Date: Fri Nov 19 18:14:17 2021 +0000 bpf, sockmap: Attach map progs to psock early for feature probes bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13532e85b00000 final oops: https://syzkaller.appspot.com/x/report.txt?x=10d32e85b00000 console output: https://syzkaller.appspot.com/x/log.txt?x=17532e85b00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bb73e71cf4b8fd376a4f@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 38207a5e8123 ("bpf, sockmap: Attach map progs to psock early for feature probes") ================================================================== BUG: KASAN: vmalloc-out-of-bounds in __bpf_prog_put kernel/bpf/syscall.c:1812 [inline] BUG: KASAN: vmalloc-out-of-bounds in __bpf_prog_put kernel/bpf/syscall.c:1812 [inline] kernel/bpf/syscall.c:1829 BUG: KASAN: vmalloc-out-of-bounds in bpf_prog_put+0x8c/0x4f0 kernel/bpf/syscall.c:1829 kernel/bpf/syscall.c:1829 Read of size 8 at addr ffffc90000e76038 by task syz-executor020/3641 CPU: 1 PID: 3641 Comm: syz-executor020 Not tainted 5.16.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] __dump_stack lib/dump_stack.c:88 [inline] lib/dump_stack.c:106 dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106 lib/dump_stack.c:106 print_address_description+0x65/0x380 mm/kasan/report.c:247 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] __kasan_report mm/kasan/report.c:433 [inline] mm/kasan/report.c:450 kasan_report+0x19a/0x1f0 mm/kasan/report.c:450 mm/kasan/report.c:450 __bpf_prog_put kernel/bpf/syscall.c:1812 [inline] __bpf_prog_put kernel/bpf/syscall.c:1812 [inline] kernel/bpf/syscall.c:1829 bpf_prog_put+0x8c/0x4f0 kernel/bpf/syscall.c:1829 kernel/bpf/syscall.c:1829 bpf_prog_release+0x37/0x40 kernel/bpf/syscall.c:1837 kernel/bpf/syscall.c:1837 __fput+0x3fc/0x870 fs/file_table.c:280 fs/file_table.c:280 task_work_run+0x146/0x1c0 kernel/task_work.c:164 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] exit_task_work include/linux/task_work.h:32 [inline] kernel/exit.c:832 do_exit+0x705/0x24f0 kernel/exit.c:832 kernel/exit.c:832 do_group_exit+0x168/0x2d0 kernel/exit.c:929 kernel/exit.c:929 __do_sys_exit_group+0x13/0x20 kernel/exit.c:940 kernel/exit.c:940 __se_sys_exit_group+0x10/0x10 kernel/exit.c:938 kernel/exit.c:938 __x64_sys_exit_group+0x37/0x40 kernel/exit.c:938 kernel/exit.c:938 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_x64 arch/x86/entry/common.c:50 [inline] arch/x86/entry/common.c:80 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3b90ccd1d9 Code: Unable to access opcode bytes at RIP 0x7f3b90ccd1af. RSP: 002b:00007ffdeec58318 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f3b90d41330 RCX: 00007f3b90ccd1d9 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc4 R09: 00007ffdeec58390 R10: 00007ffdeec58390 R11: 0000000000000246 R12: 00007f3b90d41330 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 </TASK> Memory state around the buggy address: ffffc90000e75f00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90000e75f80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc90000e76000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90000e76080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90000e76100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ================================================================== --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
