syzbot


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

Status: upstream: reported C repro on 2021/10/04 21:37
Reported-by: syzbot+b7be9429f37d15205470@syzkaller.appspotmail.com
First crash: 465d, 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 (bisect log)
similar bugs (8):
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 1050d 1272d 0/3 public: reported C repro on 2019/04/13 00:00
upstream KASAN: use-after-free Read in __dev_queue_xmit (4) 1 803d 803d 0/24 auto-closed as invalid on 2020/10/23 09:56
upstream KASAN: use-after-free Read in __dev_queue_xmit (2) C 2 1600d 1600d 6/24 fixed on 2018/06/07 13:52
upstream KASAN: use-after-free Read in __dev_queue_xmit (3) 11 1466d 1469d 12/24 fixed on 2018/11/12 21:25
linux-4.19 KASAN: use-after-free Read in __dev_queue_xmit C error 12 22d 524d 0/1 upstream: reported C repro on 2021/04/30 04:08
upstream KASAN: use-after-free Read in __dev_queue_xmit C 10 1618d 1736d 6/24 fixed on 2018/05/09 07:47
linux-4.14 KASAN: use-after-free Read in __dev_queue_xmit C 1 26d 238d 0/1 upstream: reported C repro on 2022/02/10 06:42
upstream BUG: unable to handle kernel paging request in __dev_queue_xmit 1 532d 524d 0/24 auto-closed as invalid on 2021/06/21 04:04

Sample crash report:
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
==================================================================
BUG: KASAN: use-after-free in skb_update_prio net/core/dev.c:3843 [inline]
BUG: KASAN: use-after-free in __dev_queue_xmit+0x5f2/0x3640 net/core/dev.c:4108
Read of size 8 at addr ffff888040d14c10 by task aoe_tx0/1226

CPU: 1 PID: 1226 Comm: aoe_tx0 Not tainted 5.18.0-rc6-syzkaller-00153-g2fe1020d73ca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description+0x65/0x4b0 mm/kasan/report.c:313
 print_report+0xf4/0x210 mm/kasan/report.c:429
 kasan_report+0xfb/0x130 mm/kasan/report.c:491
 skb_update_prio net/core/dev.c:3843 [inline]
 __dev_queue_xmit+0x5f2/0x3640 net/core/dev.c:4108
 tx+0x6f/0x110 drivers/block/aoe/aoenet.c:63
 kthread+0x241/0x450 drivers/block/aoe/aoecmd.c:1229
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>

Allocated by task 7561:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:436 [inline]
 ____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:515
 kasan_kmalloc include/linux/kasan.h:234 [inline]
 __kmalloc_node+0x262/0x400 mm/slub.c:4462
 kmalloc_node include/linux/slab.h:604 [inline]
 kvmalloc_node+0x6e/0x160 mm/util.c:580
 kvmalloc include/linux/slab.h:731 [inline]
 kvzalloc include/linux/slab.h:739 [inline]
 alloc_netdev_mqs+0x85/0xe10 net/core/dev.c:10491
 rtnl_create_link+0x2db/0x9e0 net/core/rtnetlink.c:3204
 __rtnl_newlink net/core/rtnetlink.c:3473 [inline]
 rtnl_newlink+0x13b7/0x2070 net/core/rtnetlink.c:3531
 rtnetlink_rcv_msg+0x92f/0xe80 net/core/rtnetlink.c:5993
 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2502
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 ____sys_sendmsg+0x597/0x8e0 net/socket.c:2413
 ___sys_sendmsg net/socket.c:2467 [inline]
 __sys_sendmsg+0x27e/0x370 net/socket.c:2496
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Freed by task 7561:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4c/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0xd8/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1728 [inline]
 slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1754
 slab_free mm/slub.c:3510 [inline]
 kfree+0xc6/0x210 mm/slub.c:4552
 device_release+0x98/0x1c0
 kobject_cleanup+0x235/0x470 lib/kobject.c:673
 netdev_run_todo+0xf7c/0x1070 net/core/dev.c:10274
 rtnl_unlock net/core/rtnetlink.c:112 [inline]
 rtnetlink_rcv_msg+0x936/0xe80 net/core/rtnetlink.c:5994
 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2502
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 ____sys_sendmsg+0x597/0x8e0 net/socket.c:2413
 ___sys_sendmsg net/socket.c:2467 [inline]
 __sys_sendmsg+0x27e/0x370 net/socket.c:2496
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

The buggy address belongs to the object at ffff888040d14000
 which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 3088 bytes inside of
 4096-byte region [ffff888040d14000, ffff888040d15000)

The buggy address belongs to the physical page:
page:ffffea0001034400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x40d10
head:ffffea0001034400 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000001 ffff88801144c280
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3681, tgid 3681 (udevd), ts 1632639133450, free_ts 1632618204070
 prep_new_page mm/page_alloc.c:2441 [inline]
 get_page_from_freelist+0x72e/0x7a0 mm/page_alloc.c:4182
 __alloc_pages+0x26c/0x5f0 mm/page_alloc.c:5408
 alloc_slab_page+0x70/0xf0 mm/slub.c:1799
 allocate_slab+0x5e/0x560 mm/slub.c:1944
 new_slab mm/slub.c:2004 [inline]
 ___slab_alloc+0x41e/0xcd0 mm/slub.c:3005
 __slab_alloc mm/slub.c:3092 [inline]
 slab_alloc_node mm/slub.c:3183 [inline]
 __kmalloc_node+0x2c0/0x400 mm/slub.c:4458
 kmalloc_node include/linux/slab.h:604 [inline]
 kvmalloc_node+0x6e/0x160 mm/util.c:580
 kvmalloc include/linux/slab.h:731 [inline]
 seq_buf_alloc fs/seq_file.c:38 [inline]
 seq_read_iter+0x1f6/0xd30 fs/seq_file.c:210
 call_read_iter include/linux/fs.h:2044 [inline]
 new_sync_read fs/read_write.c:401 [inline]
 vfs_read+0xa01/0xd10 fs/read_write.c:482
 ksys_read+0x19b/0x2c0 fs/read_write.c:620
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1356 [inline]
 free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1406
 free_unref_page_prepare mm/page_alloc.c:3328 [inline]
 free_unref_page+0x7d/0x390 mm/page_alloc.c:3423
 free_slab mm/slub.c:2043 [inline]
 discard_slab mm/slub.c:2049 [inline]
 __unfreeze_partials+0x1ab/0x200 mm/slub.c:2523
 put_cpu_partial+0x116/0x180 mm/slub.c:2599
 do_slab_free mm/slub.c:3498 [inline]
 ___cache_free+0x118/0x1a0 mm/slub.c:3517
 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:446
 kasan_slab_alloc include/linux/kasan.h:224 [inline]
 slab_post_alloc_hook mm/slab.h:749 [inline]
 slab_alloc_node mm/slub.c:3217 [inline]
 kmem_cache_alloc_node+0x1cd/0x340 mm/slub.c:3267
 __alloc_skb+0xd2/0x590 net/core/skbuff.c:414
 alloc_skb_fclone include/linux/skbuff.h:1350 [inline]
 tcp_stream_alloc_skb+0x67/0x480 net/ipv4/tcp.c:863
 tcp_sendmsg_locked+0xd64/0x3fc0 net/ipv4/tcp.c:1298
 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1449
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 sock_write_iter+0x37c/0x4e0 net/socket.c:1061
 call_write_iter include/linux/fs.h:2050 [inline]
 new_sync_write fs/read_write.c:504 [inline]
 vfs_write+0xa22/0xd40 fs/read_write.c:591
 ksys_write+0x19b/0x2c0 fs/read_write.c:644

Memory state around the buggy address:
 ffff888040d14b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888040d14b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888040d14c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff888040d14c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888040d14d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

Crashes (26):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2022/05/15 14:31 upstream 2fe1020d73ca 744a39e2 .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-this-kasan-gce 2021/12/21 07:28 net 75a2f3152009 62bd192b .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-kasan-gce 2022/05/16 09:39 net-next d9713088158b 744a39e2 .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-kasan-gce 2022/01/20 08:11 net-next fe8152b38d3a 5da9499f .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-kasan-gce 2021/12/26 07:01 net-next 7c63f26cb518 6caa12e4 .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-kasan-gce 2021/12/13 22:45 net-next 9b5bcb193a3b 49ca1f59 .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-linux-next-kasan-gce-root 2022/07/09 07:15 linux-next cb71b93c2dc3 b5765a15 .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-linux-next-kasan-gce-root 2022/05/23 08:37 linux-next 18ecd30af1a8 7268fa62 .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-linux-next-kasan-gce-root 2022/05/15 12:39 linux-next 1e1b28b936ae 744a39e2 .config log report syz C KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-kasan-gce-smack-root 2022/01/12 23:40 upstream f079ab01b560 44d1319a .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-kasan-gce-smack-root 2021/11/24 04:15 upstream 5d9f4cf36721 545ab074 .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-kasan-gce-selinux-root 2021/11/21 01:12 upstream a90af8f15bdc 4eb20a4e .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-kasan-gce-root 2021/10/25 13:51 upstream 87066fdd2e30 4f0000ee .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-kasan-gce-root 2021/09/29 05:10 upstream a4e6f95a891a d82cb927 .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-kasan-gce-smack-root 2021/08/30 17:36 upstream 7d2a07b76933 8f58a0ef .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-kasan-gce-smack-root 2021/06/28 21:51 upstream 62fb9874f5da 9d2ab5df .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-this-kasan-gce 2022/09/14 05:24 net 0727a9a5fbc1 b884348d .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-this-kasan-gce 2022/08/23 00:19 net 3c53cd65dece 26a13b38 .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-this-kasan-gce 2022/06/24 06:50 net 12378a5a75e3 912f5df7 .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-this-kasan-gce 2022/05/23 20:04 net 8c3b8dc5cc9b 4c7657cb .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-this-kasan-gce 2022/04/10 16:10 net 8d3a6c37d50d e22c3da3 .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-this-kasan-gce 2021/09/25 11:08 net 7fe7f3182a0d 8cac236e .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-kasan-gce 2022/09/21 20:53 net-next c29b06821590 380f82fb .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-kasan-gce 2022/08/10 07:21 net-next 3c47fb2f4c4d c2a623d6 .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-net-kasan-gce 2022/07/19 20:43 net-next e22c88799f26 72a3cc0c .config log report info KASAN: use-after-free Read in __dev_queue_xmit
ci-upstream-linux-next-kasan-gce-root 2021/08/09 20:18 linux-next da454ebf578f 6972b106 .config log report info KASAN: use-after-free Read in __dev_queue_xmit
* Struck through repros no longer work on HEAD.