Decoded stacktrace: [ 1955.183204] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 [ 1955.184298] Mem abort info: [ 1955.184629] ESR = 0x0000000096000004 [ 1955.185073] EC = 0x25: DABT (current EL), IL = 32 bits [ 1955.185733] SET = 0, FnV = 0 [ 1955.208910] Workqueue: mld mld_ifc_work [ 1955.209373] pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) readelf: Error: Not an ELF file - it has the wrong magic bytes at the start [ 1955.210207] pc : vxlan_xmit_one (drivers/net/vxlan/vxlan_core.c:2641) vxlan [ 1955.210825] lr : vxlan_xmit_one (include/linux/skbuff.h:1616 include/net/udp.h:343 drivers/net/vxlan/vxlan_core.c:2630) vxlan [ 1955.211437] sp : ffff800082fd3690 [ 1955.211847] x29: ffff800082fd37a0 x28: 0000000000006e47 x27: 0000000000000000 [ 1955.212719] x26: 0000000000000050 x25: ffff0000c6b22800 x24: ffff0000c524b840 [ 1955.213592] x23: ffff0000cd0e2a80 x22: 0000000000009ed9 x21: 00000000d0070000 [ 1955.214466] x20: ffff0000cd0e2000 x19: ffff0000c799f400 x18: ffff800082fcd078 [ 1955.215340] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000002 [ 1955.216207] x14: 0000000000000000 x13: 000000000000005a x12: 0000000000000000 [ 1955.217074] x11: 0000000000080001 x10: 0000000000000000 x9 : 0000000000000000 [ 1955.217964] x8 : 0000000000000000 x7 : ffff0000c524b890 x6 : ffffdb9399048400 [ 1955.218855] x5 : 0000000000000000 x4 : ffffdb9399048400 x3 : 0000000000008000 [ 1955.219744] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 [ 1955.220636] Call trace: [ 1955.220948] vxlan_xmit_one (drivers/net/vxlan/vxlan_core.c:2641) vxlan (P) [ 1955.221572] vxlan_xmit (drivers/net/vxlan/vxlan_core.c:3006) vxlan [ 1955.222105] dev_hard_start_xmit (include/linux/netdevice.h:5151 include/linux/netdevice.h:5160 net/core/dev.c:3800 net/core/dev.c:3816) [ 1955.222632] __dev_queue_xmit (net/core/dev.c:4652) [ 1955.223139] neigh_hh_output (include/net/neighbour.h:524) [ 1955.223622] ip6_finish_output2 (include/net/neighbour.h:537 net/ipv6/ip6_output.c:141) [ 1955.224128] ip6_finish_output (net/ipv6/ip6_output.c:215 net/ipv6/ip6_output.c:226) [ 1955.224623] ip6_output (include/linux/netfilter.h:303 net/ipv6/ip6_output.c:247) [ 1955.225039] NF_HOOK.constprop.0 (include/linux/netfilter.h:316) [ 1955.225548] mld_sendpack (net/ipv6/mcast.c:1872) [ 1955.226001] mld_send_cr (net/ipv6/mcast.c:2170) [ 1955.226440] mld_ifc_work (net/ipv6/mcast.c:2704) [ 1955.226881] process_one_work (arch/arm64/include/asm/jump_label.h:36 include/trace/events/workqueue.h:110 kernel/workqueue.c:3243) [ 1955.227372] worker_thread (kernel/workqueue.c:3313 (discriminator 2) kernel/workqueue.c:3400 (discriminator 2)) [ 1955.227834] kthread (kernel/kthread.c:464) [ 1955.228222] ret_from_fork (arch/arm64/kernel/entry.S:863) [ 1955.228663] Code: 7103801f 1a9f17e0 b9003be0 17fffe5e (f9400800) All code ======== 0:* 1f (bad) <-- trapping instruction 1: 80 03 71 addb $0x71,(%rbx) 4: e0 17 loopne 0x1d 6: 9f lahf 7: 1a e0 sbb %al,%ah 9: 3b 00 cmp (%rax),%eax b: b9 5e fe ff 17 mov $0x17fffe5e,%ecx 10: 00 08 add %cl,(%rax) 12: 40 f9 rex stc
Code starting with the faulting instruction =========================================== 0: 00 08 add %cl,(%rax) 2: 40 f9 rex stc [ 1955.229407] ---[ end trace 0000000000000000 ]--- [ 1955.251684] Kernel panic - not syncing: Oops: Fatal exception in interrupt [ 1955.252442] SMP: stopping secondary CPUs [ 1955.252909] Kernel Offset: 0x5b93152e0000 from 0xffff800080000000 [ 1955.253615] PHYS_OFFSET: 0x40000000 [ 1955.254017] CPU features: 0x200,000000f0,0084e250,aa27fea7 [ 1955.254630] Memory Limit: none [ 1955.273409] Rebooting in 10 seconds.. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-gcp in Ubuntu. https://bugs.launchpad.net/bugs/2121240 Title: kernel panic during ubuntu_kselftests_net:test_vxlan_fdb_changelink.sh Status in linux-gcp package in Ubuntu: Invalid Status in linux-gcp source package in Noble: New Bug description: Testing for SRU cycle s2025.07.14 discovered a kernel panic during ubuntu_kselftests_net.net:test_vxlan_fdb_changelink.sh noble:linux-gcp-6.14 6.14.0-1015.16~24.04.1 The issue was observed to be sporadic. Re-running the test resulted in a PASS. [ 1955.183204] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 [ 1955.184298] Mem abort info: [ 1955.184629] ESR = 0x0000000096000004 [ 1955.185073] EC = 0x25: DABT (current EL), IL = 32 bits [ 1955.185733] SET = 0, FnV = 0 ... [ 1955.208910] Workqueue: mld mld_ifc_work [ 1955.209373] pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) [ 1955.210207] pc : vxlan_xmit_one+0xa74/0x14b0 [vxlan] [ 1955.210825] lr : vxlan_xmit_one+0x9e8/0x14b0 [vxlan] [ 1955.211437] sp : ffff800082fd3690 [ 1955.211847] x29: ffff800082fd37a0 x28: 0000000000006e47 x27: 0000000000000000 [ 1955.212719] x26: 0000000000000050 x25: ffff0000c6b22800 x24: ffff0000c524b840 [ 1955.213592] x23: ffff0000cd0e2a80 x22: 0000000000009ed9 x21: 00000000d0070000 [ 1955.214466] x20: ffff0000cd0e2000 x19: ffff0000c799f400 x18: ffff800082fcd078 [ 1955.215340] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000002 [ 1955.216207] x14: 0000000000000000 x13: 000000000000005a x12: 0000000000000000 [ 1955.217074] x11: 0000000000080001 x10: 0000000000000000 x9 : 0000000000000000 [ 1955.217964] x8 : 0000000000000000 x7 : ffff0000c524b890 x6 : ffffdb9399048400 [ 1955.218855] x5 : 0000000000000000 x4 : ffffdb9399048400 x3 : 0000000000008000 [ 1955.219744] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 [ 1955.220636] Call trace: [ 1955.220948] vxlan_xmit_one+0xa74/0x14b0 [vxlan] (P) [ 1955.221572] vxlan_xmit+0x498/0x5d0 [vxlan] [ 1955.222105] dev_hard_start_xmit+0xac/0x1d8 [ 1955.222632] __dev_queue_xmit+0x1ac/0x820 [ 1955.223139] neigh_hh_output+0x98/0x110 [ 1955.223622] ip6_finish_output2+0x414/0x618 [ 1955.224128] ip6_finish_output+0x1f4/0x3f8 [ 1955.224623] ip6_output+0x84/0x1a8 [ 1955.225039] NF_HOOK.constprop.0+0x58/0x100 [ 1955.225548] mld_sendpack+0x188/0x318 [ 1955.226001] mld_send_cr+0x1cc/0x350 [ 1955.226440] mld_ifc_work+0x40/0x208 [ 1955.226881] process_one_work+0x174/0x408 [ 1955.227372] worker_thread+0x29c/0x4e0 [ 1955.227834] kthread+0xe8/0x100 [ 1955.228222] ret_from_fork+0x10/0x20 [ 1955.228663] Code: 7103801f 1a9f17e0 b9003be0 17fffe5e (f9400800) [ 1955.229407] ---[ end trace 0000000000000000 ]--- [ 1955.251684] Kernel panic - not syncing: Oops: Fatal exception in interrupt [ 1955.252442] SMP: stopping secondary CPUs [ 1955.252909] Kernel Offset: 0x5b93152e0000 from 0xffff800080000000 [ 1955.253615] PHYS_OFFSET: 0x40000000 [ 1955.254017] CPU features: 0x200,000000f0,0084e250,aa27fea7 [ 1955.254630] Memory Limit: none [ 1955.273409] Rebooting in 10 seconds.. UEFI firmware (version built at 09:00:00 on Jan 10 2025) EMU Variable FVB Started EMU Variable invalid PCD sizes Found PL031 RTC @ 0x9010000 InitializeRealTimeClock: using default timezone/daylight settings To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-gcp/+bug/2121240/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
