BUG: unable to handle page fault for address: 0000000000080101
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 800000007c333067 P4D 800000007c333067 PUD 16300067 PMD 0 
Oops: Oops: 0010 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 5371 Comm: syz.3.14 Not tainted 6.11.0-rc4-next-20240821-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:0x80101
Code: Unable to access opcode bytes at 0x800d7.
RSP: 0018:ffffc900044f67c0 EFLAGS: 00010097
RAX: 00000000ffffffff RBX: ffffffff8bbd7ea5 RCX: ffff88807917bc00
RDX: ffffc9000a0cb000 RSI: ffffffff818924e0 RDI: 1ffff9200089ed14
==================================================================
BUG: KASAN: stack-out-of-bounds in __show_regs+0x172/0x610 arch/x86/kernel/process_64.c:87
Read of size 8 at addr ffffc900044f6738 by task syz.3.14/5371

CPU: 0 UID: 0 PID: 5371 Comm: syz.3.14 Not tainted 6.11.0-rc4-next-20240821-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 __show_regs+0x172/0x610 arch/x86/kernel/process_64.c:87
 show_regs arch/x86/kernel/dumpstack.c:472 [inline]
 __die_body+0x3c/0xb0 arch/x86/kernel/dumpstack.c:420
 page_fault_oops+0x8e4/0xcc0 arch/x86/mm/fault.c:711
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5ed/0x8c0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:0x80101
Code: Unable to access opcode bytes at 0x800d7.
RSP: 0018:ffffc900044f67c0 EFLAGS: 00010097
RAX: 00000000ffffffff RBX: ffffffff8bbd7ea5 RCX: ffff88807917bc00
RDX: ffffc9000a0cb000 RSI: ffffffff818924e0 RDI: 1ffff9200089ed14
RBP: ffffffff8e4cb1bc R08: ffffffff8baed814 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8baed7a0 R12: ffffffff8e4cb1a4
R13: ffffc900044f6840 R14: ffffffffffffffff R15: 000000000000000c
 </TASK>

The buggy address belongs to stack of task syz.3.14/5371
internal error: frame has invalid marker: 16

The buggy address belongs to the virtual mapping at
 [ffffc900044f0000, ffffc900044f9000) created by:
 copy_process+0x5d1/0x3d50 kernel/fork.c:2206

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88807d7dadc0 pfn:0x7d7da
memcg:ffff88802d5c9d02
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: ffff88807d7dadc0 0000000000000000 00000001ffffffff ffff88802d5c9d02
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 5354, tgid 5354 (syz.3.11), ts 74011811558, free_ts 70782928055
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1517
 prep_new_page mm/page_alloc.c:1525 [inline]
 get_page_from_freelist+0x3004/0x30c0 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x29e/0x780 mm/page_alloc.c:4743
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 vm_area_alloc_pages mm/vmalloc.c:3600 [inline]
 __vmalloc_area_node mm/vmalloc.c:3669 [inline]
 __vmalloc_node_range_noprof+0xa40/0x1400 mm/vmalloc.c:3850
 alloc_thread_stack_node kernel/fork.c:314 [inline]
 dup_task_struct+0x444/0x8c0 kernel/fork.c:1115
 copy_process+0x5d1/0x3d50 kernel/fork.c:2206
 kernel_clone+0x226/0x8f0 kernel/fork.c:2787
 __do_sys_clone3 kernel/fork.c:3091 [inline]
 __se_sys_clone3+0x2cb/0x350 kernel/fork.c:3070
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 11 tgid 11 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1098 [inline]
 free_unref_page+0xc07/0xd90 mm/page_alloc.c:2651
 discard_slab mm/slub.c:2630 [inline]
 __put_partials+0xeb/0x130 mm/slub.c:3098
 put_cpu_partial+0x17c/0x250 mm/slub.c:3173
 __slab_free+0x2ea/0x3d0 mm/slub.c:4391
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4036 [inline]
 slab_alloc_node mm/slub.c:4085 [inline]
 kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4128
 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:667
 alloc_skb include/linux/skbuff.h:1320 [inline]
 alloc_skb_with_frags+0xc3/0x770 net/core/skbuff.c:6528
 sock_alloc_send_pskb+0x91a/0xa60 net/core/sock.c:2815
 sock_alloc_send_skb include/net/sock.h:1778 [inline]
 mld_newpack+0x1c3/0xa90 net/ipv6/mcast.c:1746
 add_grhead net/ipv6/mcast.c:1849 [inline]
 add_grec+0x1492/0x19a0 net/ipv6/mcast.c:1987
 mld_send_initial_cr+0x228/0x4b0 net/ipv6/mcast.c:2233
 ipv6_mc_dad_complete+0x88/0x490 net/ipv6/mcast.c:2244
 addrconf_dad_completed+0x712/0xcd0 net/ipv6/addrconf.c:4342

Memory state around the buggy address:
 ffffc900044f6600: f2 f2 02 f2 00 00 00 00 f3 f3 f3 f3 00 00 00 00
 ffffc900044f6680: 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2 00 00 00 f2
>ffffc900044f6700: f2 f2 f2 f2 04 f3 f3 f3 00 00 00 00 00 00 00 00
                                        ^
 ffffc900044f6780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc900044f6800: 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 f1 f1 f1 f1
==================================================================
RBP: ffffffff8e4cb1bc R08: ffffffff8baed814 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8baed7a0 R12: ffffffff8e4cb1a4
R13: ffffc900044f6840 R14: ffffffffffffffff R15: 000000000000000c
FS:  00007ff6990f56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000080101 CR3: 0000000079a2e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 </TASK>
Modules linked in:
CR2: 0000000000080101
---[ end trace 0000000000000000 ]---
RIP: 0010:0x80101
Code: Unable to access opcode bytes at 0x800d7.
RSP: 0018:ffffc900044f67c0 EFLAGS: 00010097
RAX: 00000000ffffffff RBX: ffffffff8bbd7ea5 RCX: ffff88807917bc00
RDX: ffffc9000a0cb000 RSI: ffffffff818924e0 RDI: 1ffff9200089ed14
RBP: ffffffff8e4cb1bc R08: ffffffff8baed814 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8baed7a0 R12: ffffffff8e4cb1a4
R13: ffffc900044f6840 R14: ffffffffffffffff R15: 000000000000000c
FS:  00007ff6990f56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000080101 CR3: 0000000079a2e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400