syzbot


KASAN: use-after-free Read in __dev_queue_xmit (5)

Status: upstream: reported C repro on 2021/10/04 21:37
Subsystems: block
[Documentation on labels]
Reported-by: syzbot+b7be9429f37d15205470@syzkaller.appspotmail.com
First crash: 888d, last: 15d
Cause bisection: introduced by (bisect log) [no-op commit]:
commit 349181b7b86367bfe66341c6fc2708f01c568f0d
Author: Karen Sornek <karen.sornek@intel.com>
Date: Mon Aug 30 08:38:01 2021 +0000

  iavf: Fix static code analysis warning

Crash: KASAN: use-after-free Read in __dev_queue_xmit (log)
Repro: C syz .config
  
Fix bisection: failed (error log, bisect log)
  
Discussions (5)
Title Replies (including bot) Last reply
[syzbot] Monthly block report (Oct 2023) 0 (1) 2023/10/09 09:23
[syzbot] Monthly block report (Sep 2023) 0 (1) 2023/09/07 09:25
[syzbot] Monthly block report (Jul 2023) 0 (1) 2023/07/06 14:17
[syzbot] Monthly block report (Jun 2023) 0 (1) 2023/06/07 09:10
[syzbot] KASAN: use-after-free Read in __dev_queue_xmit (5) 0 (2) 2021/12/13 22:46
Similar bugs (10)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-49 KASAN: use-after-free Read in __dev_queue_xmit C 46 1474d 1696d 0/3 public: reported C repro on 2019/04/13 00:00
upstream KASAN: use-after-free Read in __dev_queue_xmit (4) block 1 1227d 1227d 0/25 auto-closed as invalid on 2020/10/23 09:56
upstream KASAN: use-after-free Read in __dev_queue_xmit (2) net C 2 2023d 2023d 6/25 fixed on 2018/06/07 13:52
upstream KASAN: use-after-free Read in __dev_queue_xmit (3) net 11 1890d 1893d 12/25 fixed on 2018/11/12 21:25
linux-6.1 KASAN: use-after-free Read in __dev_queue_xmit origin:upstream C 2 16d 219d 0/3 upstream: reported C repro on 2023/04/29 13:33
linux-5.15 KASAN: use-after-free Read in __dev_queue_xmit origin:upstream C error 1 189d 189d 0/3 upstream: reported C repro on 2023/05/28 17:42
linux-4.19 KASAN: use-after-free Read in __dev_queue_xmit C error 15 276d 948d 0/1 upstream: reported C repro on 2021/04/30 04:08
upstream KASAN: use-after-free Read in __dev_queue_xmit net C 10 2042d 2160d 6/25 fixed on 2018/05/09 07:47
linux-4.14 KASAN: use-after-free Read in __dev_queue_xmit C error 1 450d 662d 0/1 upstream: reported C repro on 2022/02/10 06:42
upstream BUG: unable to handle kernel paging request in __dev_queue_xmit block 1 956d 947d 0/25 auto-closed as invalid on 2021/06/21 04:04
Last patch testing requests (10)
Created Duration User Patch Repo Result
2023/12/03 09:00 23m retest repro net OK log
2023/12/03 09:00 22m retest repro net OK log
2023/10/13 11:57 23m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2023/10/13 08:27 19m retest repro net-next OK log
2023/10/13 08:27 20m retest repro net-next OK log
2023/10/13 08:27 19m retest repro net-next OK log
2023/10/13 08:27 26m retest repro net-next OK log
2023/10/13 03:50 20m retest repro linux-next error OK
2023/10/13 03:50 20m retest repro linux-next error OK
2023/10/13 03:50 3h52m retest repro linux-next error OK

Sample crash report:
==================================================================
BUG: KASAN: use-after-free in skb_update_prio net/core/dev.c:3901 [inline]
BUG: KASAN: use-after-free in __dev_queue_xmit+0x35c8/0x39a0 net/core/dev.c:4180
Read of size 8 at addr ffff8880903e8b90 by task aoe_tx0/1237

CPU: 1 PID: 1237 Comm: aoe_tx0 Not tainted 5.19.0-rc4-next-20220628-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:317 [inline]
 print_report.cold+0x2ba/0x719 mm/kasan/report.c:433
 kasan_report+0xbe/0x1f0 mm/kasan/report.c:495
 skb_update_prio net/core/dev.c:3901 [inline]
 __dev_queue_xmit+0x35c8/0x39a0 net/core/dev.c:4180
 dev_queue_xmit include/linux/netdevice.h:2994 [inline]
 tx+0x6a/0xc0 drivers/block/aoe/aoenet.c:63
 kthread+0x1e7/0x3b0 drivers/block/aoe/aoecmd.c:1229
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
 </TASK>

The buggy address belongs to the physical page:
page:ffffea000240fa00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x903e8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea00015d5008 ffffea0001a48208 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x446dc0(GFP_KERNEL_ACCOUNT|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_COMP|__GFP_ZERO), pid 6027, tgid 6012 (syz-executor636), ts 1791418636307, free_ts 1791581322751
 prep_new_page mm/page_alloc.c:2535 [inline]
 get_page_from_freelist+0x210d/0x3a30 mm/page_alloc.c:4282
 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5506
 __alloc_pages_node include/linux/gfp.h:583 [inline]
 alloc_pages_node include/linux/gfp.h:606 [inline]
 kmalloc_large_node+0x62/0x130 mm/slub.c:4438
 __kmalloc_node+0x300/0x380 mm/slub.c:4454
 kmalloc_node include/linux/slab.h:623 [inline]
 kvmalloc_node+0xa4/0x190 mm/util.c:581
 kvmalloc include/linux/slab.h:750 [inline]
 kvzalloc include/linux/slab.h:758 [inline]
 alloc_netdev_mqs+0x98/0x1180 net/core/dev.c:10598
 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3241
 rtnl_newlink_create net/core/rtnetlink.c:3353 [inline]
 __rtnl_newlink+0xf8f/0x17e0 net/core/rtnetlink.c:3580
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3593
 rtnetlink_rcv_msg+0x43a/0xc90 net/core/rtnetlink.c:6089
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x6eb/0x810 net/socket.c:2485
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2539
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1453 [inline]
 free_pcp_prepare+0x5e4/0xd20 mm/page_alloc.c:1503
 free_unref_page_prepare mm/page_alloc.c:3383 [inline]
 free_unref_page+0x19/0x4d0 mm/page_alloc.c:3479
 kvfree+0x42/0x50 mm/util.c:623
 device_release+0x9f/0x240 drivers/base/core.c:2318
 kobject_cleanup lib/kobject.c:673 [inline]
 kobject_release lib/kobject.c:704 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1be/0x4c0 lib/kobject.c:721
 netdev_run_todo+0x75e/0x10f0 net/core/dev.c:10380
 rtnl_unlock net/core/rtnetlink.c:147 [inline]
 rtnetlink_rcv_msg+0x447/0xc90 net/core/rtnetlink.c:6090
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x6eb/0x810 net/socket.c:2485
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2539
 __sys_sendmsg net/socket.c:2568 [inline]
 __do_sys_sendmsg net/socket.c:2577 [inline]
 __se_sys_sendmsg net/socket.c:2575 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2575
 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

Memory state around the buggy address:
 ffff8880903e8a80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8880903e8b00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8880903e8b80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                         ^
 ffff8880903e8c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8880903e8c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================

Crashes (42):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/07/09 07:15 linux-next cb71b93c2dc3 b5765a15 .config console log report syz C ci-upstream-linux-next-kasan-gce-root KASAN: use-after-free Read in __dev_queue_xmit
2022/05/23 08:37 linux-next 18ecd30af1a8 7268fa62 .config console log report syz C ci-upstream-linux-next-kasan-gce-root KASAN: use-after-free Read in __dev_queue_xmit
2022/05/15 12:39 linux-next 1e1b28b936ae 744a39e2 .config console log report syz C ci-upstream-linux-next-kasan-gce-root KASAN: use-after-free Read in __dev_queue_xmit
2023/05/28 17:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eb0f1697d729 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 KASAN: slab-use-after-free Read in __dev_queue_xmit
2022/05/15 14:31 upstream 2fe1020d73ca 744a39e2 .config console log report syz C ci-upstream-kasan-gce-smack-root KASAN: use-after-free Read in __dev_queue_xmit
2021/12/21 07:28 net-old 75a2f3152009 62bd192b .config console log report syz C ci-upstream-net-this-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/05/16 09:39 net-next-old d9713088158b 744a39e2 .config console log report syz C ci-upstream-net-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/01/20 08:11 net-next-old fe8152b38d3a 5da9499f .config console log report syz C ci-upstream-net-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2021/12/26 07:01 net-next-old 7c63f26cb518 6caa12e4 .config console log report syz C ci-upstream-net-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2021/12/13 22:45 net-next-old 9b5bcb193a3b 49ca1f59 .config console log report syz C ci-upstream-net-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2023/03/02 17:03 net-old fb07390463c9 f8902b57 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/09/04 16:17 upstream 708283abf896 8bc9053e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root KASAN: use-after-free Read in __dev_queue_xmit
2022/01/12 23:40 upstream f079ab01b560 44d1319a .config console log report info ci-upstream-kasan-gce-smack-root KASAN: use-after-free Read in __dev_queue_xmit
2021/11/24 04:15 upstream 5d9f4cf36721 545ab074 .config console log report info ci-upstream-kasan-gce-smack-root KASAN: use-after-free Read in __dev_queue_xmit
2021/11/21 01:12 upstream a90af8f15bdc 4eb20a4e .config console log report info ci-upstream-kasan-gce-selinux-root KASAN: use-after-free Read in __dev_queue_xmit
2021/10/25 13:51 upstream 87066fdd2e30 4f0000ee .config console log report info ci-upstream-kasan-gce-root KASAN: use-after-free Read in __dev_queue_xmit
2021/09/29 05:10 upstream a4e6f95a891a d82cb927 .config console log report info ci-upstream-kasan-gce-root KASAN: use-after-free Read in __dev_queue_xmit
2021/08/30 17:36 upstream 7d2a07b76933 8f58a0ef .config console log report info ci-upstream-kasan-gce-smack-root KASAN: use-after-free Read in __dev_queue_xmit
2021/06/28 21:51 upstream 62fb9874f5da 9d2ab5df .config console log report info ci-upstream-kasan-gce-smack-root KASAN: use-after-free Read in __dev_queue_xmit
2023/10/27 08:28 net c17cda15cc86 bf285f0c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/09/14 05:24 net-old 0727a9a5fbc1 b884348d .config console log report info [disk image] [vmlinux] ci-upstream-net-this-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/08/23 00:19 net-old 3c53cd65dece 26a13b38 .config console log report info ci-upstream-net-this-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/06/24 06:50 net-old 12378a5a75e3 912f5df7 .config console log report info ci-upstream-net-this-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/05/23 20:04 net-old 8c3b8dc5cc9b 4c7657cb .config console log report info ci-upstream-net-this-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/04/10 16:10 net-old 8d3a6c37d50d e22c3da3 .config console log report info ci-upstream-net-this-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2021/09/25 11:08 net-old 7fe7f3182a0d 8cac236e .config console log report info ci-upstream-net-this-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/11/05 02:24 net-next-old fbeb229a6622 6d752409 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/09/21 20:53 net-next-old c29b06821590 380f82fb .config console log report info [disk image] [vmlinux] ci-upstream-net-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/08/10 07:21 net-next-old 3c47fb2f4c4d c2a623d6 .config console log report info ci-upstream-net-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2022/07/19 20:43 net-next-old e22c88799f26 72a3cc0c .config console log report info ci-upstream-net-kasan-gce KASAN: use-after-free Read in __dev_queue_xmit
2021/08/09 20:18 linux-next da454ebf578f 6972b106 .config console log report info ci-upstream-linux-next-kasan-gce-root KASAN: use-after-free Read in __dev_queue_xmit
2023/11/19 09:00 upstream 05aa69b096a0 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/10/22 21:07 upstream fe3cfe869d5e 361b23dc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/09/20 22:48 upstream 5d2f53532ecc 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/10/15 10:39 upstream 9a3dad63edbe f757a323 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 Internal error in __dev_queue_xmit
2023/09/29 02:46 upstream 633b47cb009d d265efd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 Internal error in __dev_queue_xmit
2023/06/22 12:35 upstream dad9774deaf1 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/04/14 05:55 upstream 44149752e998 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/08/18 21:07 upstream 8abd7287db92 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/09/04 16:34 net-next bd6c11bc43c4 8bc9053e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/08/26 00:20 linux-next 626932085009 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: slab-use-after-free Read in __dev_queue_xmit
2023/04/08 09:35 linux-next e134c93f788f 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: slab-use-after-free Read in __dev_queue_xmit
* Struck through repros no longer work on HEAD.