ip6gretap0 speed is unknown, defaulting to 1000
==================================================================
BUG: KASAN: slab-use-after-free in siw_query_port+0x37b/0x3e0 drivers/infiniband/sw/siw/siw_verbs.c:177
Read of size 4 at addr ffff8880458c60e8 by task kworker/1:9/7168

CPU: 1 PID: 7168 Comm: kworker/1:9 Not tainted 6.5.0-rc4-syzkaller-01198-gb98a5aa7e4c2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: infiniband ib_cache_event_task
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 siw_query_port+0x37b/0x3e0 drivers/infiniband/sw/siw/siw_verbs.c:177
 iw_query_port drivers/infiniband/core/device.c:2049 [inline]
 ib_query_port drivers/infiniband/core/device.c:2090 [inline]
 ib_query_port+0x3cf/0x8a0 drivers/infiniband/core/device.c:2082
 ib_cache_update.part.0+0xd9/0x920 drivers/infiniband/core/cache.c:1487
 ib_cache_update drivers/infiniband/core/cache.c:1561 [inline]
 ib_cache_event_task+0x1c2/0x290 drivers/infiniband/core/cache.c:1561
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
 worker_thread+0x687/0x1110 kernel/workqueue.c:2748
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>

Allocated by task 5073:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:196 [inline]
 __do_kmalloc_node mm/slab_common.c:985 [inline]
 __kmalloc_node+0x60/0x100 mm/slab_common.c:992
 kmalloc_node include/linux/slab.h:602 [inline]
 kvmalloc_node+0x99/0x1a0 mm/util.c:604
 kvmalloc include/linux/slab.h:720 [inline]
 kvzalloc include/linux/slab.h:728 [inline]
 alloc_netdev_mqs+0x9b/0x1290 net/core/dev.c:10673
 rtnl_create_link+0xc9c/0xfd0 net/core/rtnetlink.c:3335
 rtnl_newlink_create net/core/rtnetlink.c:3461 [inline]
 __rtnl_newlink+0x1075/0x18c0 net/core/rtnetlink.c:3688
 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3701
 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6427
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2575
 netlink_unicast_kernel net/netlink/af_netlink.c:1344 [inline]
 netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1370
 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1939
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg+0xd9/0x180 net/socket.c:748
 __sys_sendto+0x255/0x340 net/socket.c:2134
 __do_sys_sendto net/socket.c:2146 [inline]
 __se_sys_sendto net/socket.c:2142 [inline]
 __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2142
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 2159:
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x15e/0x1b0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1792 [inline]
 slab_free_freelist_hook+0x10b/0x1e0 mm/slub.c:1818
 slab_free mm/slub.c:3801 [inline]
 __kmem_cache_free+0xb8/0x2f0 mm/slub.c:3814
 kvfree+0x47/0x50 mm/util.c:650
 device_release+0xa1/0x240 drivers/base/core.c:2484
 kobject_cleanup lib/kobject.c:682 [inline]
 kobject_release lib/kobject.c:713 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x5b0 lib/kobject.c:730
 netdev_run_todo+0x7dd/0x11d0 net/core/dev.c:10445
 ip6gre_exit_batch_net+0x3ef/0x580 net/ipv6/ip6_gre.c:1644
 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175
 cleanup_net+0x505/0xb20 net/core/net_namespace.c:614
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
 worker_thread+0x687/0x1110 kernel/workqueue.c:2748
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

The buggy address belongs to the object at ffff8880458c6000
 which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 232 bytes inside of
 freed 4096-byte region [ffff8880458c6000, ffff8880458c7000)

The buggy address belongs to the physical page:
page:ffffea0001163000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x458c0
head:ffffea0001163000 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888076f37c81
ksm flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000010200 ffff88801284f500 ffffea0001162a00 dead000000000003
raw: 0000000000000000 0000000000040004 00000001ffffffff ffff888076f37c81
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 5066, tgid 5066 (syz-executor.4), ts 149023873137, free_ts 26076852974
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570
 prep_new_page mm/page_alloc.c:1577 [inline]
 get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477
 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2292
 alloc_slab_page mm/slub.c:1862 [inline]
 allocate_slab+0x24e/0x380 mm/slub.c:2009
 new_slab mm/slub.c:2062 [inline]
 ___slab_alloc+0x8bc/0x1570 mm/slub.c:3215
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3314
 __slab_alloc_node mm/slub.c:3367 [inline]
 slab_alloc_node mm/slub.c:3460 [inline]
 __kmem_cache_alloc_node+0x137/0x350 mm/slub.c:3509
 __do_kmalloc_node mm/slab_common.c:984 [inline]
 __kmalloc_node_track_caller+0x4d/0x100 mm/slab_common.c:1005
 kmemdup+0x29/0x60 mm/util.c:131
 kmemdup include/linux/fortify-string.h:765 [inline]
 __addrconf_sysctl_register+0xc2/0x3f0 net/ipv6/addrconf.c:7120
 addrconf_sysctl_register net/ipv6/addrconf.c:7185 [inline]
 addrconf_sysctl_register+0x133/0x1d0 net/ipv6/addrconf.c:7174
 ipv6_add_dev+0x9f6/0x13d0 net/ipv6/addrconf.c:451
 addrconf_notify+0x55c/0x1920 net/ipv6/addrconf.c:3589
 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xb9/0x130 net/core/dev.c:1970
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1161 [inline]
 free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2443
 free_contig_range+0xb6/0x190 mm/page_alloc.c:6395
 destroy_args+0x686/0x940 mm/debug_vm_pgtable.c:1029
 debug_vm_pgtable+0x2339/0x3ff0 mm/debug_vm_pgtable.c:1410
 do_one_initcall+0x117/0x630 init/main.c:1232
 do_initcall_level init/main.c:1294 [inline]
 do_initcalls init/main.c:1310 [inline]
 do_basic_setup init/main.c:1329 [inline]
 kernel_init_freeable+0x5bd/0x8f0 init/main.c:1546
 kernel_init+0x1c/0x2a0 init/main.c:1437
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

Memory state around the buggy address:
 ffff8880458c5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880458c6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880458c6080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                          ^
 ffff8880458c6100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880458c6180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================