Hello, syzbot found the following issue on: HEAD commit: 1e1b28b936ae Add linux-next specific files for 20220513 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1480e611f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=e4eb3c0c4b289571 dashboard link: https://syzkaller.appspot.com/bug?extid=acf65ca584991f3cc447 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. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+acf65ca584991f3cc447@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6653 at mm/hugetlb.c:6250 follow_hugetlb_page+0x1326/0x1c80 mm/hugetlb.c:6250 Modules linked in: CPU: 1 PID: 6653 Comm: syz-executor.1 Not tainted 5.18.0-rc6-next-20220513-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:follow_hugetlb_page+0x1326/0x1c80 mm/hugetlb.c:6250 Code: 89 44 24 70 e8 2b 1d b7 ff 48 8b 44 24 70 48 85 c0 0f 84 f1 07 00 00 e8 88 1a b7 ff 48 83 ed 01 e9 09 fb ff ff e8 7a 1a b7 ff <0f> 0b 48 8b 7c 24 30 bb f4 ff ff ff e8 69 74 b8 07 4c 8b a4 24 b8 RSP: 0018:ffffc9000d04f7e0 EFLAGS: 00010212 RAX: 00000000000030f2 RBX: ffff88807eb336c0 RCX: ffffc90003331000 RDX: 0000000000040000 RSI: ffffffff81c38f76 RDI: 0000000000000003 RBP: ffffea0001fd8080 R08: 0000000000000000 R09: 0000000000000003 R10: ffffffff81b128fb R11: 0000000000000057 R12: 0000000000000002 R13: ffff88807eb336c0 R14: ffff88807eb33d80 R15: 0000000000000001 FS: 00007f59bc2a1700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f59bb0d6720 CR3: 000000001eaf8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __get_user_pages+0x27a/0xfa0 mm/gup.c:1146 __get_user_pages_locked mm/gup.c:1365 [inline] __gup_longterm_locked+0x1d5/0xfe0 mm/gup.c:1985 pin_user_pages+0x8e/0xe0 mm/gup.c:3118 io_sqe_buffer_register+0x254/0x1710 fs/io_uring.c:10537 io_sqe_buffers_register.cold+0x28e/0x443 fs/io_uring.c:10664 __io_uring_register fs/io_uring.c:12682 [inline] __do_sys_io_uring_register+0xd21/0x1930 fs/io_uring.c:12816 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f59bb0890e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f59bc2a1168 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab RAX: ffffffffffffffda RBX: 00007f59bb19bf60 RCX: 00007f59bb0890e9 RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007f59bb0e308d R08: 0000000000000000 R09: 0000000000000000 R10: 1000000000000239 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd53b6ab6f R14: 00007f59bc2a1300 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.
