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BUG: stack guard page was hit in sys_sendmmsg (2)

Status: moderation: reported on 2025/03/10 16:06
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+4a4c20161feb194b36c4@syzkaller.appspotmail.com
First crash: 5d13h, last: 5d13h
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 BUG: stack guard page was hit in sys_sendmmsg missing-backport origin:upstream C done done 2 483d 638d 0/2 auto-obsoleted due to no activity on 2024/02/22 15:26
upstream BUG: stack guard page was hit in sys_sendmmsg mm 53 66d 301d 0/28 closed as invalid on 2025/01/28 16:15
android-5-10 kernel panic: corrupted stack end in sys_sendmmsg syz error error 14 760d 786d 0/2 auto-obsoleted due to no activity on 2023/05/21 15:14

Sample crash report:
BUG: TASK stack guard page was hit at ffffc9000385ff38 (stack is ffffc90003860000..ffffc90003868000)
Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 11217 Comm: syz.0.1163 Not tainted 6.14.0-rc4-syzkaller-00210-gccc2f5a436fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:validate_chain+0x1f/0x5920 kernel/locking/lockdep.c:3862
Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec c0 02 00 00 49 89 ce <89> 54 24 58 48 89 bc 24 80 00 00 00 65 48 8b 04 25 28 00 00 00 48
RSP: 0018:ffffc9000385ff40 EFLAGS: 00010082
RAX: 1ffffffff27d86d0 RBX: ffffffff93ec3680 RCX: 52c2f5d96211ef35
RDX: 0000000000000000 RSI: ffff88802dfc8f78 RDI: ffff88802dfc8000
RBP: ffffc90003860240 R08: ffffffff94549847 R09: 1ffffffff28a9308
R10: dffffc0000000000 R11: fffffbfff28a9309 R12: ffff88802dfc8000
R13: ffff88802dfc8000 R14: 52c2f5d96211ef35 R15: 0000000000000000
FS:  00007f4e6812b6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000385ff38 CR3: 000000003314c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <#DF>
 </#DF>
 <TASK>
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 __raw_spin_trylock include/linux/spinlock_api_smp.h:90 [inline]
 _raw_spin_trylock+0x46/0x80 kernel/locking/spinlock.c:138
 spin_trylock include/linux/spinlock.h:361 [inline]
 rmqueue_pcplist mm/page_alloc.c:3033 [inline]
 rmqueue mm/page_alloc.c:3077 [inline]
 get_page_from_freelist+0x7d3/0x37a0 mm/page_alloc.c:3474
 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof mm/mempolicy.c:2341 [inline]
 alloc_pages_noprof+0x121/0x190 mm/mempolicy.c:2361
 stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627
 save_stack+0x109/0x1f0 mm/page_owner.c:157
 __set_page_owner+0x89/0x530 mm/page_owner.c:320
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
 prep_new_page mm/page_alloc.c:1559 [inline]
 get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477
 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof mm/mempolicy.c:2341 [inline]
 alloc_pages_noprof+0x121/0x190 mm/mempolicy.c:2361
 stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_save_track+0x51/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kfree+0x196/0x430 mm/slub.c:4757
 skb_kfree_head net/core/skbuff.c:996 [inline]
 skb_free_head net/core/skbuff.c:1008 [inline]
 skb_release_data+0x6a0/0x8a0 net/core/skbuff.c:1035
 skb_release_all net/core/skbuff.c:1100 [inline]
 kfree_skb_add_bulk net/core/skbuff.c:1173 [inline]
 kfree_skb_list_reason+0x2ee/0x750 net/core/skbuff.c:1195
 kfree_skb_list include/linux/skbuff.h:1291 [inline]
 ip6_fragment+0x1c86/0x22c0 net/ipv6/ip6_output.c:987
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x1adc/0x22c0 net/ipv6/ip6_output.c:967
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x1adc/0x22c0 net/ipv6/ip6_output.c:967
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x1adc/0x22c0 net/ipv6/ip6_output.c:967
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x1adc/0x22c0 net/ipv6/ip6_output.c:967
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x1adc/0x22c0 net/ipv6/ip6_output.c:967
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x1adc/0x22c0 net/ipv6/ip6_output.c:967
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x1adc/0x22c0 net/ipv6/ip6_output.c:967
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x1adc/0x22c0 net/ipv6/ip6_output.c:967
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:511 [inline]
 ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:552 [inline]
 ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:616 [inline]
 ipvlan_queue_xmit+0xb5e/0x13f0 drivers/net/ipvlan/ipvlan_core.c:682
 ipvlan_start_xmit+0x4a/0x150 drivers/net/ipvlan/ipvlan_main.c:223
 __netdev_start_xmit include/linux/netdevice.h:5151 [inline]
 netdev_start_xmit include/linux/netdevice.h:5160 [inline]
 xmit_one net/core/dev.c:3800 [inline]
 dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4649
 dev_queue_xmit include/linux/netdevice.h:3313 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x127d/0x17c0 net/ipv6/ip6_output.c:141
 ip6_fragment+0x164e/0x22c0 net/ipv6/ip6_output.c:1028
 __ip6_finish_output net/ipv6/ip6_output.c:213 [inline]
 ip6_finish_output+0x2b8/0x840 net/ipv6/ip6_output.c:226
 NF_HOOK include/linux/netfilter.h:314 [inline]
 ip6_xmit+0x1108/0x1a20 net/ipv6/ip6_output.c:366
 sctp_v6_xmit+0xa60/0x14a0 net/sctp/ipv6.c:248
 sctp_packet_transmit+0x26d6/0x2cc0 net/sctp/output.c:653
 sctp_packet_singleton+0x22c/0x320 net/sctp/outqueue.c:783
 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline]
 sctp_outq_flush+0x6d5/0x3e20 net/sctp/outqueue.c:1212
 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]
 sctp_do_sm+0x59cc/0x60c0 net/sctp/sm_sideeffect.c:1169
 sctp_primitive_ASSOCIATE+0x95/0xc0 net/sctp/primitive.c:73
 sctp_sendmsg_to_asoc+0xfa5/0x1800 net/sctp/socket.c:1841
 sctp_sendmsg+0x242e/0x35d0 net/sctp/socket.c:2031
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x1a6/0x270 net/socket.c:733
 ____sys_sendmsg+0x53a/0x860 net/socket.c:2573
 ___sys_sendmsg net/socket.c:2627 [inline]
 __sys_sendmmsg+0x36a/0x720 net/socket.c:2716
 __do_sys_sendmmsg net/socket.c:2743 [inline]
 __se_sys_sendmmsg net/socket.c:2740 [inline]
 __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2740
 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
RIP: 0033:0x7f4e6738d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4e6812b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f4e675a6080 RCX: 00007f4e6738d169
RDX: 0000000000000001 RSI: 00004000000025c0 RDI: 0000000000000005
RBP: 00007f4e6740e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4e675a6080 R15: 00007ffd6ccf98c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:validate_chain+0x1f/0x5920 kernel/locking/lockdep.c:3862
Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec c0 02 00 00 49 89 ce <89> 54 24 58 48 89 bc 24 80 00 00 00 65 48 8b 04 25 28 00 00 00 48
RSP: 0018:ffffc9000385ff40 EFLAGS: 00010082
RAX: 1ffffffff27d86d0 RBX: ffffffff93ec3680 RCX: 52c2f5d96211ef35
RDX: 0000000000000000 RSI: ffff88802dfc8f78 RDI: ffff88802dfc8000
RBP: ffffc90003860240 R08: ffffffff94549847 R09: 1ffffffff28a9308
R10: dffffc0000000000 R11: fffffbfff28a9309 R12: ffff88802dfc8000
R13: ffff88802dfc8000 R14: 52c2f5d96211ef35 R15: 0000000000000000
FS:  00007f4e6812b6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000385ff38 CR3: 000000003314c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	f3 0f 1e fa          	endbr64
   f:	55                   	push   %rbp
  10:	48 89 e5             	mov    %rsp,%rbp
  13:	41 57                	push   %r15
  15:	41 56                	push   %r14
  17:	41 55                	push   %r13
  19:	41 54                	push   %r12
  1b:	53                   	push   %rbx
  1c:	48 83 e4 e0          	and    $0xffffffffffffffe0,%rsp
  20:	48 81 ec c0 02 00 00 	sub    $0x2c0,%rsp
  27:	49 89 ce             	mov    %rcx,%r14
* 2a:	89 54 24 58          	mov    %edx,0x58(%rsp) <-- trapping instruction
  2e:	48 89 bc 24 80 00 00 	mov    %rdi,0x80(%rsp)
  35:	00
  36:	65 48 8b 04 25 28 00 	mov    %gs:0x28,%rax
  3d:	00 00
  3f:	48                   	rex.W

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/06 15:59 net ccc2f5a436fb 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: stack guard page was hit in sys_sendmmsg
* Struck through repros no longer work on HEAD.