syzbot


WARNING in follow_hugetlb_page

Status: upstream: reported C repro on 2022/05/13 09:03
Reported-by: syzbot+acf65ca584991f3cc447@syzkaller.appspotmail.com
First crash: 143d, last: 140d

Cause bisection: the cause commit could be any of (bisect log):
  14e72bb50c90 mm-fix-is_pinnable_page-against-on-cma-page-v5
  4ac671b21094 mm-fix-is_pinnable_page-against-on-cma-page-v5-fix

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3611 at mm/hugetlb.c:6250 follow_hugetlb_page+0x1326/0x1c80 mm/hugetlb.c:6250
Modules linked in:
CPU: 1 PID: 3611 Comm: syz-executor603 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:ffffc90002f6f7e0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88801bdd4e00 RCX: 0000000000000000
RDX: ffff88801e4e3a80 RSI: ffffffff81c38f76 RDI: 0000000000000003
RBP: ffffea0001fe8680 R08: 0000000000000000 R09: 0000000000000003
R10: ffffffff81b128fb R11: 0000000000000008 R12: 000000000000001a
R13: ffff88801bdd4e00 R14: ffff88801bdd5600 R15: 0000000000000019
FS:  0000555556ad2300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000458 CR3: 000000001e850000 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: 0033:0x7f5f42760cc9
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffc3407aa8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f5f42760cc9
RDX: 0000000020000380 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f5f42724e70 R08: 0000000010000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 00007f5f42724f00
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (34):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2022/05/13 16:42 linux-next 1e1b28b936ae 107f6434 .config log report syz C WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/16 01:01 linux-next 1e1b28b936ae 744a39e2 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/15 03:27 linux-next 1e1b28b936ae 744a39e2 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/14 22:35 linux-next 1e1b28b936ae 744a39e2 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 22:29 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 19:18 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 19:18 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 13:50 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 13:36 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 13:28 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 13:28 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 13:24 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 13:23 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 12:19 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 12:11 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 12:07 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 12:06 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 12:06 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 12:04 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 12:02 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 11:47 linux-next 1e1b28b936ae 107f6434 .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 11:05 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 10:59 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 10:59 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 10:56 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 10:36 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 10:21 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 10:01 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 09:54 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 09:49 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 09:34 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 09:31 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 09:12 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
ci-upstream-linux-next-kasan-gce-root 2022/05/13 08:48 linux-next 1e1b28b936ae 9ad6612a .config log report info WARNING in follow_hugetlb_page
* Struck through repros no longer work on HEAD.