linux-kernel - [syzbot] WARNING in vmap_pages_range

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Date:   Sat, 20 Aug 2022 22:34:27 -0700
From:   syzbot <syzbot+616ff0452fec30f4dcfd@...kaller.appspotmail.com>
To:     ast@...nel.org, bjorn@...nel.org, bpf@...r.kernel.org,
        daniel@...earbox.net, davem@...emloft.net, edumazet@...gle.com,
        hawk@...nel.org, john.fastabend@...il.com,
        jonathan.lemon@...il.com, kuba@...nel.org,
        linux-kernel@...r.kernel.org, maciej.fijalkowski@...el.com,
        magnus.karlsson@...el.com, netdev@...r.kernel.org,
        pabeni@...hat.com, syzkaller-bugs@...glegroups.com
Subject: [syzbot] WARNING in vmap_pages_range_noflush (2)

Hello,

syzbot found the following issue on:

HEAD commit:    95d10484d66e Add linux-next specific files for 20220817
git tree:       linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=14bf9423080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2f5fa747986be53a
dashboard link: https://syzkaller.appspot.com/bug?extid=616ff0452fec30f4dcfd
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1409d63d080000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=169a9fc3080000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+616ff0452fec30f4dcfd@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 3614 at mm/vmalloc.c:476 vmap_pages_pte_range mm/vmalloc.c:476 [inline]
WARNING: CPU: 1 PID: 3614 at mm/vmalloc.c:476 vmap_pages_pmd_range mm/vmalloc.c:500 [inline]
WARNING: CPU: 1 PID: 3614 at mm/vmalloc.c:476 vmap_pages_pud_range mm/vmalloc.c:518 [inline]
WARNING: CPU: 1 PID: 3614 at mm/vmalloc.c:476 vmap_pages_p4d_range mm/vmalloc.c:536 [inline]
WARNING: CPU: 1 PID: 3614 at mm/vmalloc.c:476 vmap_small_pages_range_noflush mm/vmalloc.c:558 [inline]
WARNING: CPU: 1 PID: 3614 at mm/vmalloc.c:476 vmap_pages_range_noflush+0x992/0xb90 mm/vmalloc.c:587
Modules linked in:
CPU: 1 PID: 3614 Comm: syz-executor206 Not tainted 6.0.0-rc1-next-20220817-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:vmap_pages_pte_range mm/vmalloc.c:476 [inline]
RIP: 0010:vmap_pages_pmd_range mm/vmalloc.c:500 [inline]
RIP: 0010:vmap_pages_pud_range mm/vmalloc.c:518 [inline]
RIP: 0010:vmap_pages_p4d_range mm/vmalloc.c:536 [inline]
RIP: 0010:vmap_small_pages_range_noflush mm/vmalloc.c:558 [inline]
RIP: 0010:vmap_pages_range_noflush+0x992/0xb90 mm/vmalloc.c:587
Code: c7 c7 e0 fa f8 89 c6 05 aa 6c 0d 0c 01 e8 c7 10 7e 07 0f 0b e9 48 fe ff ff e8 ba d7 bf ff 0f 0b e9 1d ff ff ff e8 ae d7 bf ff <0f> 0b e9 11 ff ff ff e8 a2 d7 bf ff 4c 8b 7c 24 20 4c 89 ff e8 45
RSP: 0018:ffffc9000398faa8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88806fbbad48 RCX: 0000000000000000
RDX: ffff88801f1f0000 RSI: ffffffff81bc3da2 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 8000000000000163 R14: dffffc0000000000 R15: ffffc9000d9a9000
FS:  0000555555c6f300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 000000002111f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vmap_pages_range mm/vmalloc.c:621 [inline]
 vmap+0x1b4/0x330 mm/vmalloc.c:2837
 xdp_umem_addr_map net/xdp/xdp_umem.c:51 [inline]
 xdp_umem_reg net/xdp/xdp_umem.c:223 [inline]
 xdp_umem_create+0xcf7/0x1180 net/xdp/xdp_umem.c:252
 xsk_setsockopt+0x73e/0x9e0 net/xdp/xsk.c:1100
 __sys_setsockopt+0x2d6/0x690 net/socket.c:2252
 __do_sys_setsockopt net/socket.c:2263 [inline]
 __se_sys_setsockopt net/socket.c:2260 [inline]
 __x64_sys_setsockopt+0xba/0x150 net/socket.c:2260
 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+0x63/0xcd
RIP: 0033:0x7f848f588b29
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:00007ffdd237dcc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f848f588b29
RDX: 0000000000000004 RSI: 000000000000011b RDI: 0000000000000003
RBP: 00007f848f54ccd0 R08: 0000000000000020 R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 00007f848f54cd60
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>


---
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