* Re: [LTP] [PATCH net] net: clear transport header during tunnel decapsulation
[not found] <20260624073209.3703492-1-edumazet@google.com>
@ 2026-07-09 5:00 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-07-09 5:00 UTC (permalink / raw)
To: Eric Dumazet
Cc: lkp, eric.dumazet, netdev, David Ahern,
syzbot+d5d0d598a4cfdfafdc3b, Eric Dumazet, oliver.sang,
Simon Horman, Ido Schimmel, oe-lkp, Jakub Kicinski, Paolo Abeni,
David S . Miller, ltp
Hello,
kernel test robot noticed "KASAN:slab-use-after-free_in_vxlan_rcv[vxlan]" on:
commit: 35913c60d9c1072bf8c8d4e626bde513eeffcc45 ("[PATCH net] net: clear transport header during tunnel decapsulation")
url: https://github.com/intel-lab-lkp/linux/commits/Eric-Dumazet/net-clear-transport-header-during-tunnel-decapsulation/20260624-153313
base: https://git.kernel.org/cgit/linux/kernel/git/davem/net.git d87363b0edfc7504ff2b144fe4cdd8154f90f42e
patch link: https://lore.kernel.org/all/20260624073209.3703492-1-edumazet@google.com/
patch subject: [PATCH net] net: clear transport header during tunnel decapsulation
in testcase: ltp
version:
with following parameters:
test: net.features
config: x86_64-rhel-9.4-ltp
compiler: gcc-14
test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-4790T CPU @ 2.70GHz (Haswell) with 16G memory
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202607091154.8fb0e88c-lkp@intel.com
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260709/202607091154.8fb0e88c-lkp@intel.com
below decoded stack trace FYI:
kern :err : [ 836.649020] [ C2] ==================================================================
kern :err : [ 836.657473] [ C2] BUG: KASAN: slab-use-after-free in vxlan_rcv (kbuild/src/drivers/net/vxlan/vxlan_core.c:1567 kbuild/src/drivers/net/vxlan/vxlan_core.c:1745) vxlan
kern :err : [ 836.665872] [ C2] Read of size 4 at addr ffff888414b94787 by task kworker/u32:14/3114
kern :err : [ 836.677034] [ C2] CPU: 2 UID: 0 PID: 3114 Comm: kworker/u32:14 Tainted: G S 7.1.0+ #1 PREEMPT(lazy)
kern :err : [ 836.677039] [ C2] Tainted: [S]=CPU_OUT_OF_SPEC
kern :err : [ 836.677041] [ C2] Hardware name: Gigabyte Technology Co., Ltd. Z97X-UD5H/Z97X-UD5H, BIOS F9 04/21/2015
kern :err : [ 836.677043] [ C2] Workqueue: ipv6_addrconf addrconf_dad_work
kern :err : [ 836.677051] [ C2] Call Trace:
kern :err : [ 836.677053] [ C2] <IRQ>
kern :err : [ 836.677055] [ C2] dump_stack_lvl (kbuild/src/lib/dump_stack.c:94 kbuild/src/lib/dump_stack.c:120)
kern :err : [ 836.677060] [ C2] print_address_description+0x70/0x300
kern :err : [ 836.677066] [ C2] ? vxlan_rcv (kbuild/src/drivers/net/vxlan/vxlan_core.c:1567 kbuild/src/drivers/net/vxlan/vxlan_core.c:1745) vxlan
kern :err : [ 836.677074] [ C2] print_report (kbuild/src/mm/kasan/report.c:482)
kern :err : [ 836.677078] [ C2] ? __virt_addr_valid (kbuild/src/include/linux/mmzone.h:2198 (discriminator 1) kbuild/src/include/linux/mmzone.h:2280 (discriminator 1) kbuild/src/arch/x86/mm/physaddr.c:54 (discriminator 1))
kern :err : [ 836.677093] [ C2] ? vxlan_rcv (kbuild/src/drivers/net/vxlan/vxlan_core.c:1567 kbuild/src/drivers/net/vxlan/vxlan_core.c:1745) vxlan
kern :err : [ 836.677102] [ C2] kasan_report (kbuild/src/mm/kasan/report.c:595)
kern :err : [ 836.677105] [ C2] ? vxlan_rcv (kbuild/src/drivers/net/vxlan/vxlan_core.c:1567 kbuild/src/drivers/net/vxlan/vxlan_core.c:1745) vxlan
kern :err : [ 836.677115] [ C2] vxlan_rcv (kbuild/src/drivers/net/vxlan/vxlan_core.c:1567 kbuild/src/drivers/net/vxlan/vxlan_core.c:1745) vxlan
kern :err : [ 836.677146] [ C2] ? __pfx_vxlan_rcv (kbuild/src/drivers/net/vxlan/vxlan_core.c:2327) vxlan
kern :err : [ 836.677153] [ C2] ? ip6_list_rcv_finish+0x8d2/0xc30
kern :err : [ 836.677156] [ C2] ? __pfx_ip6_list_rcv_finish+0x10/0x10
kern :err : [ 836.677158] [ C2] ? ip6_parse_tlv (kbuild/src/net/ipv6/exthdrs.c:175)
kern :err : [ 836.677162] [ C2] ? __pfx_vxlan_rcv (kbuild/src/drivers/net/vxlan/vxlan_core.c:2327) vxlan
kern :err : [ 836.677169] [ C2] udp_queue_rcv_one_skb (kbuild/src/net/ipv4/udp.c:2388)
kern :err : [ 836.677174] [ C2] ? ipv6_parse_hopopts (kbuild/src/net/ipv6/exthdrs.c:1081)
kern :err : [ 836.677177] [ C2] udp_unicast_rcv_skb (kbuild/src/net/ipv4/udp.c:2574)
kern :err : [ 836.677180] [ C2] udp_rcv (kbuild/src/net/ipv4/udp.c:2640)
kern :err : [ 836.677184] [ C2] ? __pfx_udp_rcv (kbuild/src/net/ipv4/udp.c:2451 (discriminator 1))
kern :err : [ 836.677187] [ C2] ? ip_mc_validate_source (kbuild/src/include/net/ip_fib.h:460 kbuild/src/net/ipv4/route.c:1729 kbuild/src/net/ipv4/route.c:1705)
kern :err : [ 836.677193] [ C2] ip_protocol_deliver_rcu (kbuild/src/net/ipv4/ip_input.c:207 (discriminator 4))
kern :err : [ 836.677196] [ C2] ip_local_deliver_finish (kbuild/src/net/ipv4/ip_input.c:241 (discriminator 1))
kern :err : [ 836.677199] [ C2] ip_local_deliver (kbuild/src/include/linux/netfilter.h:318 kbuild/src/include/linux/netfilter.h:312 kbuild/src/net/ipv4/ip_input.c:262)
kern :err : [ 836.677201] [ C2] ? __pfx_ip_local_deliver (kbuild/src/include/linux/skbuff.h:4508 (discriminator 1))
kern :err : [ 836.677204] [ C2] ? ip_rcv_finish_core (kbuild/src/net/ipv4/ip_input.c:391)
kern :err : [ 836.677206] [ C2] ? netif_receive_skb_list_internal (kbuild/src/include/linux/rcupdate.h:873 kbuild/src/net/core/dev.c:6440)
kern :err : [ 836.677210] [ C2] ip_rcv (kbuild/src/include/net/dst.h:480 (discriminator 6) kbuild/src/net/ipv4/ip_input.c:492 (discriminator 6) kbuild/src/include/linux/netfilter.h:318 (discriminator 6) kbuild/src/include/linux/netfilter.h:312 (discriminator 6) kbuild/src/net/ipv4/ip_input.c:612 (discriminator 6))
kern :err : [ 836.677212] [ C2] ? __pfx_netif_receive_skb_list_internal (kbuild/src/net/core/dev.c:6662 (discriminator 2))
kern :err : [ 836.677215] [ C2] ? __pfx_ip_rcv (kbuild/src/include/net/dst.h:480 (discriminator 1))
kern :err : [ 836.677218] [ C2] ? __pfx_ip_rcv (kbuild/src/include/net/dst.h:480 (discriminator 1))
kern :err : [ 836.677221] [ C2] __netif_receive_skb_one_core (kbuild/src/net/core/dev.c:6206 (discriminator 4))
kern :err : [ 836.677223] [ C2] ? napi_complete_done (kbuild/src/include/linux/instrumented.h:55 kbuild/src/net/core/dev.c:6831)
kern :err : [ 836.677226] [ C2] ? __pfx___netif_receive_skb_one_core (kbuild/src/net/core/dev.c:6248)
kern :err : [ 836.677229] [ C2] ? _raw_spin_lock_irq (kbuild/src/include/linux/instrumented.h:55 kbuild/src/include/linux/atomic/atomic-instrumented.h:1301 kbuild/src/include/asm-generic/qspinlock.h:111 kbuild/src/include/linux/spinlock.h:187 kbuild/src/include/linux/spinlock_api_smp.h:143 kbuild/src/kernel/locking/spinlock.c:174)
kern :err : [ 836.677235] [ C2] process_backlog (kbuild/src/net/core/dev.c:6670)
kern :err : [ 836.677238] [ C2] __napi_poll (kbuild/src/net/core/dev.c:7729)
kern :err : [ 836.677241] [ C2] net_rx_action (kbuild/src/net/core/dev.c:7792 kbuild/src/net/core/dev.c:7949)
kern :err : [ 836.677245] [ C2] ? __pfx_net_rx_action (kbuild/src/include/net/gro.h:525)
kern :err : [ 836.677248] [ C2] ? __pfx_hrtimer_update_next_event (kbuild/src/kernel/time/hrtimer.c:195)
kern :err : [ 836.677253] [ C2] ? __pfx_sched_clock_cpu (kbuild/src/include/linux/list.h:226)
kern :err : [ 836.677257] [ C2] ? sched_clock (kbuild/src/arch/x86/kernel/tsc.c:297)
kern :err : [ 836.677261] [ C2] ? sched_clock_cpu (kbuild/src/kernel/sched/clock.c:400)
kern :err : [ 836.677265] [ C2] handle_softirqs (kbuild/src/kernel/softirq.c:622)
kern :err : [ 836.677269] [ C2] do_softirq (kbuild/src/kernel/softirq.c:523 (discriminator 20) kbuild/src/kernel/softirq.c:510 (discriminator 20))
kern :err : [ 836.677272] [ C2] </IRQ>
kern :err : [ 836.677273] [ C2] <TASK>
kern :err : [ 836.677274] [ C2] __local_bh_enable_ip (kbuild/src/kernel/softirq.c:450)
kern :err : [ 836.677276] [ C2] __dev_queue_xmit (kbuild/src/include/linux/bottom_half.h:33 kbuild/src/include/linux/rcupdate.h:914 kbuild/src/net/core/dev.c:4907)
kern :err : [ 836.677280] [ C2] ? unwind_next_frame (kbuild/src/include/linux/rcupdate.h:873 kbuild/src/include/linux/rcupdate.h:1183 kbuild/src/arch/x86/kernel/unwind_orc.c:495)
kern :err : [ 836.677284] [ C2] ? arch_stack_walk (kbuild/src/arch/x86/include/asm/unwind.h:64 kbuild/src/arch/x86/kernel/stacktrace.c:24)
kern :err : [ 836.677287] [ C2] ? kasan_save_track (kbuild/src/mm/kasan/common.c:78)
kern :err : [ 836.677293] [ C2] ? __pfx___dev_queue_xmit (kbuild/src/net/core/dev.c:4735)
kern :err : [ 836.677296] [ C2] ? __pfx__raw_spin_lock_bh (kbuild/src/kernel/locking/spinlock.c:159)
kern :err : [ 836.677299] [ C2] ? _raw_write_lock_bh (kbuild/src/include/linux/instrumented.h:55 kbuild/src/include/linux/atomic/atomic-instrumented.h:1301 kbuild/src/include/asm-generic/qrwlock.h:98 kbuild/src/include/linux/rwlock_api_smp.h:222 kbuild/src/kernel/locking/spinlock.c:338)
kern :err : [ 836.677302] [ C2] ? __asan_memcpy (kbuild/src/mm/kasan/shadow.c:106 (discriminator 1))
kern :err : [ 836.677306] [ C2] ? eth_header (kbuild/src/net/ethernet/eth.c:99 (discriminator 6))
kern :err : [ 836.677311] [ C2] ? neigh_resolve_output (kbuild/src/include/linux/netdevice.h:3493 kbuild/src/net/core/neighbour.c:1611 kbuild/src/net/core/neighbour.c:1596)
kern :err : [ 836.677316] [ C2] ip6_finish_output2 (kbuild/src/include/net/neighbour.h:560 (discriminator 2) kbuild/src/net/ipv6/ip6_output.c:136 (discriminator 2))
kern :err : [ 836.677320] [ C2] ? __pfx_ip6_finish_output2 (kbuild/src/include/net/xfrm.h:1303)
kern :err : [ 836.677324] [ C2] ? kasan_save_track (kbuild/src/mm/kasan/common.c:78)
kern :err : [ 836.677327] [ C2] ? __kasan_kmalloc (kbuild/src/mm/kasan/common.c:398 kbuild/src/mm/kasan/common.c:415)
kern :err : [ 836.677330] [ C2] ? dst_cow_metrics_generic (kbuild/src/include/linux/slab.h:969 kbuild/src/net/core/dst.c:194)
kern :err : [ 836.677333] [ C2] ? icmp6_dst_alloc (kbuild/src/include/net/dst.h:136 kbuild/src/include/net/dst.h:197 kbuild/src/net/ipv6/route.c:3359)
kern :err : [ 836.677336] [ C2] ? ndisc_send_skb (kbuild/src/net/ipv6/ndisc.c:491)
kern :err : [ 836.677339] [ C2] ? addrconf_dad_completed (kbuild/src/net/ipv6/addrconf.c:4395)
kern :err : [ 836.677342] [ C2] ? addrconf_dad_begin (kbuild/src/net/ipv6/addrconf.c:4157)
kern :err : [ 836.677345] [ C2] ? addrconf_dad_work (kbuild/src/net/ipv6/addrconf.c:4262)
kern :err : [ 836.677348] [ C2] ? process_one_work (kbuild/src/kernel/workqueue.c:3314)
kern :err : [ 836.677350] [ C2] ? worker_thread (kbuild/src/kernel/workqueue.c:3397 kbuild/src/kernel/workqueue.c:3478)
kern :err : [ 836.677352] [ C2] ? kthread (kbuild/src/kernel/kthread.c:436)
kern :err : [ 836.677356] [ C2] ? ret_from_fork (kbuild/src/arch/x86/kernel/process.c:158)
kern :err : [ 836.677358] [ C2] ? ret_from_fork_asm (kbuild/src/arch/x86/entry/entry_64.S:245)
kern :err : [ 836.677361] [ C2] ? addrconf_dad_work (kbuild/src/net/ipv6/addrconf.c:4262)
kern :err : [ 836.677364] [ C2] ? process_one_work (kbuild/src/kernel/workqueue.c:3314)
kern :err : [ 836.677366] [ C2] ? worker_thread (kbuild/src/kernel/workqueue.c:3397 kbuild/src/kernel/workqueue.c:3478)
kern :err : [ 836.677369] [ C2] ip6_finish_output (kbuild/src/net/ipv6/ip6_output.c:208 kbuild/src/net/ipv6/ip6_output.c:219)
kern :err : [ 836.677372] [ C2] ip6_output (kbuild/src/include/linux/netfilter.h:307 kbuild/src/net/ipv6/ip6_output.c:246)
kern :err : [ 836.677375] [ C2] ? __pfx_ip6_output (kbuild/src/net/ipv6/ip6_output.c:169)
kern :err : [ 836.677379] [ C2] ? _raw_spin_lock_irqsave (kbuild/src/include/linux/instrumented.h:55 kbuild/src/include/linux/atomic/atomic-instrumented.h:1301 kbuild/src/include/asm-generic/qspinlock.h:111 kbuild/src/include/linux/spinlock.h:187 kbuild/src/include/linux/spinlock_api_smp.h:133 kbuild/src/kernel/locking/spinlock.c:166)
kern :err : [ 836.677382] [ C2] ? __pfx__raw_spin_lock_irqsave (kbuild/src/kernel/locking/spinlock.c:273)
kern :err : [ 836.677385] [ C2] NF_HOOK+0xda/0x1f0
kern :err : [ 836.677388] [ C2] ? __pfx_NF_HOOK+0x10/0x10
kern :err : [ 836.677391] [ C2] ? rt6_uncached_list_add (kbuild/src/include/linux/list.h:96 kbuild/src/include/linux/list.h:158 kbuild/src/include/linux/list.h:191 kbuild/src/net/ipv6/route.c:145)
kern :err : [ 836.677394] [ C2] ndisc_send_skb (kbuild/src/net/ipv6/ndisc.c:512)
kern :err : [ 836.677396] [ C2] ? __pfx_ndisc_send_skb (kbuild/src/include/net/dst.h:470 (discriminator 1))
kern :err : [ 836.677400] [ C2] ? ndisc_send_rs (kbuild/src/net/ipv6/ndisc.c:171 (discriminator 1) kbuild/src/net/ipv6/ndisc.c:719 (discriminator 1))
kern :err : [ 836.677402] [ C2] addrconf_dad_completed (kbuild/src/net/ipv6/addrconf.c:4395)
kern :err : [ 836.677406] [ C2] ? __pfx_addrconf_dad_completed (kbuild/src/net/ipv6/addrconf.c:4091 (discriminator 10))
kern :err : [ 836.677409] [ C2] ? _raw_spin_lock (kbuild/src/include/linux/instrumented.h:55 kbuild/src/include/linux/atomic/atomic-instrumented.h:1301 kbuild/src/include/asm-generic/qspinlock.h:111 kbuild/src/include/linux/spinlock.h:187 kbuild/src/include/linux/spinlock_api_smp.h:159 kbuild/src/kernel/locking/spinlock.c:158)
kern :err : [ 836.677412] [ C2] ? __pfx__raw_spin_lock (kbuild/src/kernel/locking/spinlock.c:331)
kern :err : [ 836.677416] [ C2] ? addrconf_dad_begin (kbuild/src/net/ipv6/addrconf.c:4157)
kern :err : [ 836.677419] [ C2] addrconf_dad_begin (kbuild/src/net/ipv6/addrconf.c:4157)
kern :err : [ 836.677422] [ C2] ? __pfx_sched_balance_newidle (kbuild/src/kernel/sched/fair.c:13237 (discriminator 1))
kern :err : [ 836.677425] [ C2] ? __pfx_addrconf_dad_begin (kbuild/src/include/net/ipv6.h:459 (discriminator 2))
kern :err : [ 836.677428] [ C2] ? __pfx__raw_spin_lock_bh (kbuild/src/kernel/locking/spinlock.c:159)
kern :err : [ 836.677432] [ C2] addrconf_dad_work (kbuild/src/net/ipv6/addrconf.c:4262)
kern :err : [ 836.677435] [ C2] ? __pfx_addrconf_dad_work (kbuild/src/net/ipv6/addrconf.c:1568 (discriminator 2))
kern :err : [ 836.677438] [ C2] ? __schedule (kbuild/src/kernel/sched/core.c:5507 kbuild/src/kernel/sched/core.c:7228)
kern :err : [ 836.677443] [ C2] process_one_work (kbuild/src/kernel/workqueue.c:3314)
kern :err : [ 836.677446] [ C2] ? assign_work (kbuild/src/kernel/workqueue.c:1233)
kern :err : [ 836.677451] [ C2] worker_thread (kbuild/src/kernel/workqueue.c:3397 kbuild/src/kernel/workqueue.c:3478)
kern :err : [ 836.677454] [ C2] ? __pfx_worker_thread (kbuild/src/kernel/workqueue.c:3405 (discriminator 1))
kern :err : [ 836.677456] [ C2] kthread (kbuild/src/kernel/kthread.c:436)
kern :err : [ 836.677459] [ C2] ? recalc_sigpending (kbuild/src/include/linux/instrumented.h:97 kbuild/src/include/asm-generic/bitops/instrumented-atomic.h:41 kbuild/src/include/linux/thread_info.h:109 kbuild/src/kernel/signal.c:181)
kern :err : [ 836.677463] [ C2] ? __pfx_kthread (kbuild/src/include/linux/list.h:404 (discriminator 2))
kern :err : [ 836.677466] [ C2] ret_from_fork (kbuild/src/arch/x86/kernel/process.c:158)
kern :err : [ 836.677468] [ C2] ? __pfx_ret_from_fork (kbuild/src/arch/x86/include/asm/entry-common.h:54)
kern :err : [ 836.677470] [ C2] ? switch_fpu (kbuild/src/include/linux/instrumented.h:82 kbuild/src/include/asm-generic/bitops/instrumented-non-atomic.h:141 kbuild/src/include/linux/thread_info.h:133 kbuild/src/include/linux/sched.h:2084 kbuild/src/arch/x86/include/asm/fpu/sched.h:34)
kern :err : [ 836.677475] [ C2] ? __switch_to (kbuild/src/arch/x86/kernel/process_64.c:403 kbuild/src/arch/x86/kernel/process_64.c:663)
kern :err : [ 836.677478] [ C2] ? __switch_to_asm (kbuild/src/arch/x86/entry/entry_64.S:206)
kern :err : [ 836.677481] [ C2] ? __pfx_kthread (kbuild/src/include/linux/list.h:404 (discriminator 2))
kern :err : [ 836.677484] [ C2] ret_from_fork_asm (kbuild/src/arch/x86/entry/entry_64.S:245)
kern :err : [ 836.677488] [ C2] </TASK>
kern :err : [ 837.303842] [ C2] Allocated by task 121763:
kern :warn : [ 837.308450] [ C2] kasan_save_stack (kbuild/src/mm/kasan/common.c:57)
kern :warn : [ 837.313267] [ C2] kasan_save_track (kbuild/src/mm/kasan/common.c:78)
kern :warn : [ 837.318040] [ C2] __kasan_slab_alloc (kbuild/src/mm/kasan/common.c:340 kbuild/src/mm/kasan/common.c:366)
kern :warn : [ 837.322991] [ C2] kmem_cache_alloc_node_noprof (kbuild/src/include/linux/kasan.h:253 kbuild/src/mm/slub.c:4610 kbuild/src/mm/slub.c:4939 kbuild/src/mm/slub.c:4991)
kern :warn : [ 837.328984] [ C2] __alloc_skb (kbuild/src/net/core/skbuff.c:704 (discriminator 2))
kern :warn : [ 837.333421] [ C2] __tcp_send_ack (kbuild/src/net/ipv4/tcp_output.c:4467)
kern :warn : [ 837.338725] [ C2] tcp_rcv_established (kbuild/src/net/ipv4/tcp_input.c:6168 kbuild/src/net/ipv4/tcp_input.c:6162 kbuild/src/net/ipv4/tcp_input.c:6662)
kern :warn : [ 837.344030] [ C2] tcp_v6_do_rcv (kbuild/src/net/ipv6/tcp_ipv6.c:1625)
kern :warn : [ 837.348812] [ C2] tcp_v6_rcv (kbuild/src/net/ipv6/tcp_ipv6.c:1902)
kern :warn : [ 837.353415] [ C2] ip6_protocol_deliver_rcu (kbuild/src/net/ipv6/ip6_input.c:479 (discriminator 1))
kern :warn : [ 837.359180] [ C2] ip6_input_finish (kbuild/src/net/ipv6/ip6_input.c:534)
kern :warn : [ 837.364172] [ C2] ip6_input (kbuild/src/include/linux/netfilter.h:318 kbuild/src/include/linux/netfilter.h:312 kbuild/src/net/ipv6/ip6_input.c:545)
kern :warn : [ 837.368432] [ C2] ip6_list_rcv_finish+0x80c/0xc30
kern :warn : [ 837.374685] [ C2] ip6_sublist_rcv (kbuild/src/net/ipv6/ip6_input.c:361)
kern :warn : [ 837.379465] [ C2] ipv6_list_rcv (kbuild/src/net/ipv6/ip6_input.c:395)
kern :warn : [ 837.384188] [ C2] __netif_receive_skb_list_core (kbuild/src/net/core/dev.c:6249 (discriminator 1) kbuild/src/net/core/dev.c:6296 (discriminator 1))
kern :warn : [ 837.390302] [ C2] netif_receive_skb_list_internal (kbuild/src/net/core/dev.c:6348 kbuild/src/net/core/dev.c:6439)
kern :warn : [ 837.396561] [ C2] napi_complete_done (kbuild/src/include/net/gro.h:523 kbuild/src/include/net/gro.h:519 kbuild/src/include/net/gro.h:531 kbuild/src/net/core/dev.c:6807)
kern :warn : [ 837.401691] [ C2] gro_cell_poll (kbuild/src/net/core/gro_cells.c:74)
kern :warn : [ 837.406397] [ C2] __napi_poll (kbuild/src/net/core/dev.c:7729)
kern :warn : [ 837.410830] [ C2] net_rx_action (kbuild/src/net/core/dev.c:7792 kbuild/src/net/core/dev.c:7949)
kern :warn : [ 837.415519] [ C2] handle_softirqs (kbuild/src/kernel/softirq.c:622)
kern :warn : [ 837.420390] [ C2] do_softirq (kbuild/src/kernel/softirq.c:523 (discriminator 20) kbuild/src/kernel/softirq.c:510 (discriminator 20))
kern :warn : [ 837.424643] [ C2] __local_bh_enable_ip (kbuild/src/kernel/softirq.c:450)
kern :warn : [ 837.429767] [ C2] __dev_queue_xmit (kbuild/src/include/linux/bottom_half.h:33 kbuild/src/include/linux/rcupdate.h:914 kbuild/src/net/core/dev.c:4907)
kern :warn : [ 837.434801] [ C2] ip6_finish_output2 (kbuild/src/include/net/neighbour.h:558 kbuild/src/net/ipv6/ip6_output.c:136)
kern :warn : [ 837.440010] [ C2] ip6_finish_output (kbuild/src/net/ipv6/ip6_output.c:208 kbuild/src/net/ipv6/ip6_output.c:219)
kern :warn : [ 837.445045] [ C2] ip6_output (kbuild/src/include/linux/netfilter.h:307 kbuild/src/net/ipv6/ip6_output.c:246)
kern :warn : [ 837.449472] [ C2] ip6_xmit (kbuild/src/include/net/dst.h:470 (discriminator 3) kbuild/src/include/linux/netfilter.h:318 (discriminator 3) kbuild/src/include/linux/netfilter.h:312 (discriminator 3) kbuild/src/net/ipv6/ip6_output.c:379 (discriminator 3))
kern :warn : [ 837.453809] [ C2] inet6_csk_xmit (kbuild/src/net/ipv6/inet6_connection_sock.c:121 (discriminator 2))
kern :warn : [ 837.458578] [ C2] __tcp_transmit_skb (kbuild/src/net/ipv4/tcp_output.c:1716 (discriminator 1))
kern :warn : [ 837.463872] [ C2] tcp_write_xmit (kbuild/src/net/ipv4/tcp_output.c:1734 kbuild/src/net/ipv4/tcp_output.c:3062)
kern :warn : [ 837.468814] [ C2] __tcp_push_pending_frames (kbuild/src/net/ipv4/tcp_output.c:3245 (discriminator 1))
kern :warn : [ 837.474459] [ C2] tcp_sendmsg_locked (kbuild/src/net/ipv4/tcp.c:1414)
kern :warn : [ 837.479755] [ C2] tcp_sendmsg (kbuild/src/net/ipv4/tcp.c:1451)
kern :warn : [ 837.484124] [ C2] __sys_sendto (kbuild/src/net/socket.c:775 (discriminator 1) kbuild/src/net/socket.c:790 (discriminator 1) kbuild/src/net/socket.c:2252 (discriminator 1))
kern :warn : [ 837.488724] [ C2] __x64_sys_sendto (kbuild/src/net/socket.c:2259 kbuild/src/net/socket.c:2255 kbuild/src/net/socket.c:2255)
kern :warn : [ 837.493587] [ C2] do_syscall_64 (kbuild/src/arch/x86/entry/syscall_64.c:63 kbuild/src/arch/x86/entry/syscall_64.c:94)
kern :warn : [ 837.498221] [ C2] entry_SYSCALL_64_after_hwframe (kbuild/src/arch/x86/entry/entry_64.S:121)
kern :err : [ 837.506678] [ C2] Freed by task 121763:
kern :warn : [ 837.510939] [ C2] kasan_save_stack (kbuild/src/mm/kasan/common.c:57)
kern :warn : [ 837.515714] [ C2] kasan_save_track (kbuild/src/mm/kasan/common.c:78)
kern :warn : [ 837.520491] [ C2] kasan_save_free_info (kbuild/src/mm/kasan/generic.c:584)
kern :warn : [ 837.525618] [ C2] __kasan_slab_free (kbuild/src/mm/kasan/common.c:253 kbuild/src/mm/kasan/common.c:285)
kern :warn : [ 837.530482] [ C2] kmem_cache_free (kbuild/src/include/linux/kasan.h:235 kbuild/src/mm/slub.c:2700 kbuild/src/mm/slub.c:6310 kbuild/src/mm/slub.c:6437)
kern :warn : [ 837.535295] [ C2] tcp_rcv_established (kbuild/src/net/ipv4/tcp_input.c:6560)
kern :warn : [ 837.540686] [ C2] tcp_v6_do_rcv (kbuild/src/net/ipv6/tcp_ipv6.c:1625)
kern :warn : [ 837.545468] [ C2] __release_sock (kbuild/src/include/net/sock.h:1190 (discriminator 1) kbuild/src/net/core/sock.c:3258 (discriminator 1))
kern :warn : [ 837.550288] [ C2] release_sock (kbuild/src/net/core/sock.c:3857)
kern :warn : [ 837.554899] [ C2] tcp_sendmsg (kbuild/src/net/ipv4/tcp.c:1452)
kern :warn : [ 837.559281] [ C2] __sys_sendto (kbuild/src/net/socket.c:775 (discriminator 1) kbuild/src/net/socket.c:790 (discriminator 1) kbuild/src/net/socket.c:2252 (discriminator 1))
kern :warn : [ 837.563883] [ C2] __x64_sys_sendto (kbuild/src/net/socket.c:2259 kbuild/src/net/socket.c:2255 kbuild/src/net/socket.c:2255)
kern :warn : [ 837.568744] [ C2] do_syscall_64 (kbuild/src/arch/x86/entry/syscall_64.c:63 kbuild/src/arch/x86/entry/syscall_64.c:94)
kern :warn : [ 837.573365] [ C2] entry_SYSCALL_64_after_hwframe (kbuild/src/arch/x86/entry/entry_64.S:121)
kern :err : [ 837.581815] [ C2] The buggy address belongs to the object at ffff888414b94780
which belongs to the cache skbuff_head_cache of size 232
kern :err : [ 837.596736] [ C2] The buggy address is located 7 bytes inside of
freed 232-byte region [ffff888414b94780, ffff888414b94868)
kern :err : [ 837.613201] [ C2] The buggy address belongs to the physical page:
kern :warn : [ 837.619738] [ C2] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x414b94
kern :warn : [ 837.628704] [ C2] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
kern :warn : [ 837.637367] [ C2] flags: 0x17ffffc0000040(head|node=0|zone=2|lastcpupid=0x1fffff)
kern :warn : [ 837.645332] [ C2] page_type: f5(slab)
kern :warn : [ 837.649452] [ C2] raw: 0017ffffc0000040 ffff8881003a2000 dead000000000100 dead000000000122
kern :warn : [ 837.658208] [ C2] raw: 0000000000000000 0000000800190019 00000000f5000000 0000000000000000
kern :warn : [ 837.666938] [ C2] head: 0017ffffc0000040 ffff8881003a2000 dead000000000100 dead000000000122
kern :warn : [ 837.675756] [ C2] head: 0000000000000000 0000000800190019 00000000f5000000 0000000000000000
kern :warn : [ 837.684572] [ C2] head: 0017ffffc0000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff
kern :warn : [ 837.693424] [ C2] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002
kern :warn : [ 837.702280] [ C2] page dumped because: kasan: bad access detected
kern :err : [ 837.711381] [ C2] Memory state around the buggy address:
kern :err : [ 837.717212] [ C2] ffff888414b94680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
kern :err : [ 837.725465] [ C2] ffff888414b94700: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc
kern :err : [ 837.733699] [ C2] >ffff888414b94780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
kern :err : [ 837.741937] [ C2] ^
kern :err : [ 837.746228] [ C2] ffff888414b94800: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
kern :err : [ 837.754492] [ C2] ffff888414b94880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
kern :err : [ 837.762743] [ C2] ==================================================================
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