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BUG: KASAN: use-after-free in skb_update_prio net/core/dev.c:3901 [inline]
BUG: KASAN: use-after-free in __dev_queue_xmit+0x35da/0x39a0 net/core/dev.c:4180
Read of size 8 at addr ffff8880531c0b90 by task aoe_tx0/1226

CPU: 1 PID: 1226 Comm: aoe_tx0 Not tainted 5.19.0-rc7-syzkaller-01445-g3c47fb2f4c4d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description.constprop.0.cold+0xeb/0x495 mm/kasan/report.c:313
 print_report mm/kasan/report.c:429 [inline]
 kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491
 skb_update_prio net/core/dev.c:3901 [inline]
 __dev_queue_xmit+0x35da/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:306
 </TASK>

Allocated by task 8396:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:436 [inline]
 ____kasan_kmalloc mm/kasan/common.c:515 [inline]
 ____kasan_kmalloc mm/kasan/common.c:474 [inline]
 __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:524
 kmalloc_node include/linux/slab.h:623 [inline]
 kvmalloc_node+0x3e/0x190 mm/util.c:613
 kvmalloc include/linux/slab.h:750 [inline]
 kvzalloc include/linux/slab.h:758 [inline]
 alloc_netdev_mqs+0x98/0x1180 net/core/dev.c:10602
 gprs_attach+0x8b/0x560 net/phonet/pep-gprs.c:248
 pep_setsockopt+0x3f7/0x530 net/phonet/pep.c:1009
 __sys_setsockopt+0x2db/0x6a0 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

Freed by task 8396:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track+0x21/0x30 mm/kasan/common.c:45
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
 ____kasan_slab_free mm/kasan/common.c:366 [inline]
 ____kasan_slab_free+0x166/0x1a0 mm/kasan/common.c:328
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1754 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1780
 slab_free mm/slub.c:3536 [inline]
 kfree+0xd6/0x4d0 mm/slub.c:4584
 kvfree+0x42/0x50 mm/util.c:655
 device_release+0x9f/0x240 drivers/base/core.c:2241
 kobject_cleanup lib/kobject.c:673 [inline]
 kobject_release lib/kobject.c:704 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1c8/0x540 lib/kobject.c:721
 netdev_run_todo+0x75e/0x10f0 net/core/dev.c:10384
 gprs_attach+0x48b/0x560 net/phonet/pep-gprs.c:287
 pep_setsockopt+0x3f7/0x530 net/phonet/pep.c:1009
 __sys_setsockopt+0x2db/0x6a0 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

The buggy address belongs to the object at ffff8880531c0000
 which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 2960 bytes inside of
 4096-byte region [ffff8880531c0000, ffff8880531c1000)

The buggy address belongs to the physical page:
page:ffffea00014c7000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x531c0
head:ffffea00014c7000 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff88804c5cac81
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 dead000000000100 dead000000000122 ffff88801184c280
raw: 0000000000000000 0000000000040004 00000001ffffffff ffff88804c5cac81
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d60c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5367, tgid 5365 (syz-executor.4), ts 3603761429009, free_ts 3603702474958
 prep_new_page mm/page_alloc.c:2456 [inline]
 get_page_from_freelist+0x1290/0x3b70 mm/page_alloc.c:4198
 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5426
 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272
 alloc_slab_page mm/slub.c:1824 [inline]
 allocate_slab+0x26c/0x3c0 mm/slub.c:1969
 new_slab mm/slub.c:2029 [inline]
 ___slab_alloc+0x9c4/0xe20 mm/slub.c:3031
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3118
 slab_alloc_node mm/slub.c:3209 [inline]
 __kmalloc_node+0x2cb/0x390 mm/slub.c:4490
 kmalloc_node include/linux/slab.h:623 [inline]
 kvmalloc_node+0x3e/0x190 mm/util.c:613
 kvmalloc include/linux/slab.h:750 [inline]
 kvzalloc include/linux/slab.h:758 [inline]
 alloc_netdev_mqs+0x98/0x1180 net/core/dev.c:10602
 gprs_attach+0x8b/0x560 net/phonet/pep-gprs.c:248
 pep_setsockopt+0x3f7/0x530 net/phonet/pep.c:1009
 __sys_setsockopt+0x2db/0x6a0 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
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1371 [inline]
 free_pcp_prepare+0x549/0xd20 mm/page_alloc.c:1421
 free_unref_page_prepare mm/page_alloc.c:3343 [inline]
 free_unref_page+0x19/0x6a0 mm/page_alloc.c:3438
 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2548
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:446
 kasan_slab_alloc include/linux/kasan.h:224 [inline]
 slab_post_alloc_hook mm/slab.h:750 [inline]
 slab_alloc_node mm/slub.c:3243 [inline]
 kmem_cache_alloc_node_trace+0x2af/0x420 mm/slub.c:3307
 kmalloc_node include/linux/slab.h:618 [inline]
 kzalloc_node include/linux/slab.h:744 [inline]
 __get_vm_area_node+0xed/0x3f0 mm/vmalloc.c:2446
 __vmalloc_node_range+0x250/0x13e0 mm/vmalloc.c:3125
 __vmalloc_node mm/vmalloc.c:3230 [inline]
 vzalloc+0x67/0x80 mm/vmalloc.c:3303
 do_ipt_get_ctl+0x60d/0x9d0 net/ipv4/netfilter/ip_tables.c:801
 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116
 ip_getsockopt net/ipv4/ip_sockglue.c:1786 [inline]
 ip_getsockopt+0x164/0x1c0 net/ipv4/ip_sockglue.c:1765
 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4351
 __sys_getsockopt+0x21f/0x6a0 net/socket.c:2296
 __do_sys_getsockopt net/socket.c:2311 [inline]
 __se_sys_getsockopt net/socket.c:2308 [inline]
 __x64_sys_getsockopt+0xba/0x150 net/socket.c:2308

Memory state around the buggy address:
 ffff8880531c0a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880531c0b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880531c0b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff8880531c0c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880531c0c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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