Hello, syzbot found the following issue on: HEAD commit: d319f344561d mm: Fix copy_from_user_nofault(). git tree: bpf-next console output: https://syzkaller.appspot.com/x/log.txt?x=15930c9dc80000 kernel config: https://syzkaller.appspot.com/x/.config?x=78c9d875f0a80d33 dashboard link: https://syzkaller.appspot.com/bug?extid=49f6cef45247ff249498 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/229f3623b7df/disk-d319f344.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6da0db75c9aa/vmlinux-d319f344.xz kernel image: https://storage.googleapis.com/syzbot-assets/01f022fb9a13/bzImage-d319f344.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+49f6cef45247ff249498@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7921 at kernel/softirq.c:376 __local_bh_enable_ip+0xbe/0x130 kernel/softirq.c:376 Modules linked in: CPU: 1 PID: 7921 Comm: syz-executor.4 Not tainted 6.2.0-syzkaller-13249-gd319f344561d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 RIP: 0010:__local_bh_enable_ip+0xbe/0x130 kernel/softirq.c:376 Code: 45 bf 01 00 00 00 e8 b1 44 0a 00 e8 9c 41 3d 00 fb 65 8b 05 2c 61 b5 7e 85 c0 74 58 5b 5d c3 65 8b 05 12 2f b4 7e 85 c0 75 a2 <0f> 0b eb 9e e8 e9 41 3d 00 eb 9f 48 89 ef e8 ff 30 18 00 eb a8 0f RSP: 0018:ffffc90007bffbe8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000201 RCX: 1ffffffff1cf0736 RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff882bf40a RBP: ffffffff882bf40a R08: 0000000000000000 R09: ffff88801cc6327b R10: ffffed100398c64f R11: 1ffffffff21917f0 R12: ffff88801cc63268 R13: ffff88801cc63268 R14: ffff8880188ef500 R15: 0000000000000000 FS: 00007f378f724700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbbc57831b8 CR3: 00000000210ad000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> spin_unlock_bh include/linux/spinlock.h:395 [inline] sock_map_del_link+0x2ea/0x510 net/core/sock_map.c:165 sock_map_unref+0xb0/0x1d0 net/core/sock_map.c:184 sock_hash_delete_elem+0x1ec/0x2a0 net/core/sock_map.c:945 map_delete_elem kernel/bpf/syscall.c:1536 [inline] __sys_bpf+0x2edc/0x53e0 kernel/bpf/syscall.c:5053 __do_sys_bpf kernel/bpf/syscall.c:5166 [inline] __se_sys_bpf kernel/bpf/syscall.c:5164 [inline] __x64_sys_bpf+0x79/0xc0 kernel/bpf/syscall.c:5164 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f378ea8c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f378f724168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f378ebabf80 RCX: 00007f378ea8c169 RDX: 0000000000000020 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00007f378eae7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe9737aebf R14: 00007f378f724300 R15: 0000000000022000 </TASK> --- 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.
