netdev - WARNING in kmalloc

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Message-ID: <000000000000885c1d05b94451f0@google.com>
Date:   Tue, 19 Jan 2021 09:39:20 -0800
From:   syzbot <syzbot+5d578be9b4bfe1b6bbd6@...kaller.appspotmail.com>
To:     davem@...emloft.net, kuba@...nel.org, linux-kernel@...r.kernel.org,
        linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
        rds-devel@....oracle.com, santosh.shilimkar@...cle.com,
        syzkaller-bugs@...glegroups.com
Subject: WARNING in kmalloc_array

Hello,

syzbot found the following issue on:

HEAD commit:    0da0a8a0 Merge tag 'scsi-fixes' of git://git.kernel.org/pu..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1293e1f7500000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ee2266946ed36986
dashboard link: https://syzkaller.appspot.com/bug?extid=5d578be9b4bfe1b6bbd6
compiler:       clang version 11.0.1

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+5d578be9b4bfe1b6bbd6@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 15540 at mm/page_alloc.c:4977 __alloc_pages_nodemask+0x4e5/0x5a0 mm/page_alloc.c:5021
Modules linked in:
CPU: 1 PID: 15540 Comm: syz-executor.2 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__alloc_pages_nodemask+0x4e5/0x5a0 mm/page_alloc.c:5021
Code: ab 09 00 e9 dd fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c eb fd ff ff 4c 89 ef e8 f4 aa 09 00 8b 74 24 18 e9 da fd ff ff <0f> 0b e9 f3 fd ff ff a9 00 00 08 00 75 16 8b 4c 24 1c 89 cb 81 e3
RSP: 0018:ffffc90016bff620 EFLAGS: 00010246
RAX: ffffc90016bff6a0 RBX: ffffc90016bff6a0 RCX: 0000000000000000
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90016bff6c8
RBP: ffffc90016bff758 R08: dffffc0000000000 R09: ffffc90016bff6a0
R10: fffff52002d7fed9 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000018 R14: 1ffff92002d7fed0 R15: 0000000000040dc0
FS:  00007fc7102ae700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000749138 CR3: 0000000025dd7000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 alloc_pages include/linux/gfp.h:547 [inline]
 kmalloc_order+0x40/0x130 mm/slab_common.c:837
 kmalloc_order_trace+0x15/0x70 mm/slab_common.c:853
 kmalloc_large include/linux/slab.h:481 [inline]
 __kmalloc+0x257/0x330 mm/slub.c:3959
 kmalloc_array+0x2d/0x40 include/linux/slab.h:593
 kcalloc include/linux/slab.h:621 [inline]
 rds_rdma_extra_size+0x84/0x300 net/rds/rdma.c:568
 rds_rm_size net/rds/send.c:928 [inline]
 rds_sendmsg+0xfad/0x3210 net/rds/send.c:1265
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 ____sys_sendmsg+0x5a2/0x900 net/socket.c:2345
 ___sys_sendmsg net/socket.c:2399 [inline]
 __sys_sendmsg+0x319/0x400 net/socket.c:2432
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc7102adc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000003
RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffd4cf1c0cf R14: 00007fc7102ae9c0 R15: 000000000119bf8c


---
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