netlink: 76 bytes leftover after parsing attributes in process `syz.2.335'.
device syzkaller0 entered promiscuous mode
==================================================================
BUG: KASAN: slab-out-of-bounds in ieee80211_monitor_select_queue+0x23a/0x240 net/mac80211/iface.c:764
Read of size 2 at addr ffff88807b126dfb by task syz.2.335/5440

CPU: 0 PID: 5440 Comm: syz.2.335 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 ieee80211_monitor_select_queue+0x23a/0x240 net/mac80211/iface.c:764
 netdev_core_pick_tx+0x12c/0x300 net/core/dev.c:4184
 __dev_queue_xmit+0x797/0x2e50 net/core/dev.c:4261
 packet_snd net/packet/af_packet.c:3094 [inline]
 packet_sendmsg+0x3cf9/0x50b0 net/packet/af_packet.c:3125
 sock_sendmsg_nosec net/socket.c:706 [inline]
 __sock_sendmsg net/socket.c:718 [inline]
 ____sys_sendmsg+0x5be/0x8f0 net/socket.c:2446
 ___sys_sendmsg+0x236/0x2e0 net/socket.c:2500
 __sys_sendmsg net/socket.c:2529 [inline]
 __do_sys_sendmsg net/socket.c:2538 [inline]
 __se_sys_sendmsg+0x1b7/0x2a0 net/socket.c:2536
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbe95513f99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbe9376c028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fbe9579bfa0 RCX: 00007fbe95513f99
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007fbe955aaec4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbe9579c038 R14: 00007fbe9579bfa0 R15: 00007fff4e429258
 </TASK>

Allocated by task 4201:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xaf/0xe0 mm/kasan/common.c:522
 kmalloc_node include/linux/slab.h:630 [inline]
 kvmalloc_node+0x84/0x130 mm/util.c:619
 kvmalloc include/linux/mm.h:816 [inline]
 kvzalloc include/linux/mm.h:824 [inline]
 bucket_table_alloc lib/rhashtable.c:184 [inline]
 rhashtable_rehash_alloc+0x9f/0x290 lib/rhashtable.c:360
 rht_deferred_worker+0x472/0x1f60 lib/rhashtable.c:420
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

The buggy address belongs to the object at ffff88807b124000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 3579 bytes to the right of
 8192-byte region [ffff88807b124000, ffff88807b126000)
The buggy address belongs to the page:
page:ffffea0001ec4800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7b120
head:ffffea0001ec4800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 0000000100000001 ffff888016c42280
raw: 0000000000000000 0000000080020002 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4756, ts 101925659924, free_ts 101924819108
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 alloc_slab_page mm/slub.c:1780 [inline]
 allocate_slab mm/slub.c:1917 [inline]
 new_slab+0xc0/0x4b0 mm/slub.c:1980
 ___slab_alloc+0x807/0xdd0 mm/slub.c:3013
 __slab_alloc mm/slub.c:3100 [inline]
 slab_alloc_node mm/slub.c:3191 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc_trace+0xf9/0x290 mm/slub.c:3250
 kmalloc include/linux/slab.h:607 [inline]
 audit_log_d_path+0xc0/0x260 kernel/audit.c:2166
 audit_log_d_path_exe+0x3e/0x70 kernel/audit.c:2237
 audit_log_task+0x219/0x2e0 kernel/auditsc.c:2682
 audit_seccomp+0x81/0x180 kernel/auditsc.c:2729
 seccomp_log kernel/seccomp.c:988 [inline]
 __seccomp_filter+0xa66/0x1a00 kernel/seccomp.c:1254
 syscall_trace_enter+0xcc/0x180 kernel/entry/common.c:68
 do_syscall_64+0x24/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x8f/0x2a0 mm/page_alloc.c:3396
 free_slab mm/slub.c:2020 [inline]
 discard_slab mm/slub.c:2026 [inline]
 __unfreeze_partials+0x188/0x1e0 mm/slub.c:2512
 put_cpu_partial+0x12d/0x190 mm/slub.c:2592
 qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3225 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc+0x15d/0x280 mm/slub.c:3238
 audit_buffer_alloc kernel/audit.c:1802 [inline]
 audit_log_start+0x12c/0x870 kernel/audit.c:1924
 audit_seccomp+0x5f/0x180 kernel/auditsc.c:2726
 seccomp_log kernel/seccomp.c:988 [inline]
 __seccomp_filter+0xa66/0x1a00 kernel/seccomp.c:1254
 syscall_trace_enter+0xcc/0x180 kernel/entry/common.c:68
 do_syscall_64+0x24/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Memory state around the buggy address:
 ffff88807b126c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807b126d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807b126d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff88807b126e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807b126e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================