Comment 32 for bug 1977919

I believe I'm getting a similar issue on Azure with a linux & Docker (linux-azure) after updates last night.
Trying to bring up the docker network interface.

Adding stack trace for those looking for Azure-related kernel panic.

[ 37.662249] kernel BUG at include/linux/fs.h:3103!
[ 37.665024] invalid opcode: 0000 [#1] SMP PTI
[ 37.667710] CPU: 1 PID: 3383 Comm: id Not tainted 5.13.0-1028-azure #33~20.04.1-Ubuntu
[ 37.668464] device vethd7a96c6 entered promiscuous mode
[ 37.672439] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090008 12/07/2018
[ 37.672441] RIP: 0010:__fput+0x247/0x250
[ 37.672446] Code: 00 48 85 ff 0f 84 8b fe ff ff f6 c7 40 0f 85 82 fe ff ff e8 ab 38 00 00 e9 78 fe ff ff 4c 89 f7 e8 2e 87 02 00 e9 b5 fe ff ff <0f> 0b 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 31 db 48
[ 37.672448] RSP: 0018:ffffaba0c3cdbde8 EFLAGS: 00010246
[ 37.672450] RAX: 0000000000000000 RBX: 00000000000a801d RCX: ffff99ce838a8000
[ 37.672451] RDX: ffff99ce8acf6b40 RSI: 0000000000000001 RDI: 0000000000000000
[ 37.672452] RBP: ffffaba0c3cdbe10 R08: 00000000000000a9 R09: ffff99ce8cf29d58
[ 37.672453] R10: ffffaba0c3cdbde8 R11: ffff99cea3891b10 R12: ffff99cea3891b00
[ 37.672454] R13: ffff99ce8cf29d58 R14: ffff99ce8acf6b60 R15: ffff99ce8ce95600
[ 37.672455] FS: 0000000000000000(0000) GS:ffff99cff7d00000(0000) knlGS:0000000000000000
[ 37.672456] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 37.672458] CR2: 00005597f9210f2e CR3: 0000000230c10002 CR4: 00000000003706e0
[ 37.672459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 37.672460] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 37.693338] br: port 11(vethd7a96c6) entered blocking state
[ 37.693823] Call Trace:
[ 37.693825] <TASK>
[ 37.693827] ____fput+0xe/0x10
[ 37.696897] br: port 11(vethd7a96c6) entered forwarding state
[ 37.700943] task_work_run+0x6a/0xa0
[ 37.700947] do_exit+0x371/0xad0
[ 37.700950] do_group_exit+0x43/0xb0
[ 37.700952] __x64_sys_exit_group+0x18/0x20
[ 37.700954] do_syscall_64+0x61/0xb0
[ 37.760928] ? irqentry_exit+0x19/0x30
[ 37.763226] ? exc_page_fault+0x83/0x160
[ 37.765461] ? asm_exc_page_fault+0x8/0x30
[ 37.767666] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 37.770647] RIP: 0033:0x7f4bf2ee3f0b
[ 37.772594] Code: Unable to access opcode bytes at RIP 0x7f4bf2ee3ee1.
[ 37.776165] RSP: 002b:00007ffc10383c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 37.780576] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f4bf2ee3f0b
[ 37.784941] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 37.788989] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 37.792803] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
[ 37.796666] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 37.800943] </TASK>
[ 37.802280] Modules linked in: veth xt_nat xt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo ip6table_nat ip6table_filter ip6_tables xt_addrtype iptable_filter iptable_nat nf_nat br_netfilter bridge stp llc aufs overlay nls_iso8859_1 dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_owner iptable_security xt_tcpudp bpfilter hv_balloon serio_raw joydev sch_fq_codel ipmi_devintf ipmi_msghandler drm msr i2c_core ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel hid_generic aesni_intel crypto_simd hid_hyperv cryptd pata_acpi hid hyperv_keyboard hyperv_fb hv_utils hv_netvsc
[ 37.846598] ---[ end trace 82874445d6a62ea4 ]---
[ 37.849869] RIP: 0010:__fput+0x247/0x250
[ 37.852578] Code: 00 48 85 ff 0f 84 8b fe ff ff f6 c7 40 0f 85 82 fe ff ff e8 ab 38 00 00 e9 78 fe ff ff 4c 89 f7 e8 2e 87 02 00 e9 b5 fe ff ff <0f> 0b 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 31 db 48
[ 37.864102] RSP: 0018:ffffaba0c3cdbde8 EFLAGS: 00010246
[ 37.867960] RAX: 0000000000000000 RBX: 00000000000a801d RCX: ffff99ce838a8000
[ 37.872447] RDX: ffff99ce8acf6b40 RSI: 0000000000000001 RDI: 0000000000000000
[ 37.876912] RBP: ffffaba0c3cdbe10 R08: 00000000000000a9 R09: ffff99ce8cf29d58
[ 37.881640] R10: ffffaba0c3cdbde8 R11: ffff99cea3891b10 R12: ffff99cea3891b00
[ 37.886009] R13: ffff99ce8cf29d58 R14: ffff99ce8acf6b60 R15: ffff99ce8ce95600
[ 37.890358] FS: 0000000000000000(0000) GS:ffff99cff7d00000(0000) knlGS:0000000000000000
[ 37.895255] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 37.898867] CR2: 00005597f9210f2e CR3: 0000000230c10002 CR4: 00000000003706e0
[ 37.903749] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 37.908554] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 37.913115] Fixing recursive fault but reboot is needed!
[ 37.921422] ------------[ cut here ]------------
[ 37.924679] kernel BUG at include/linux/fs.h:3103!
[ 37.927869] invalid opcode: 0000 [#2] SMP PTI
[ 37.930808] CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G D 5.13.0-1028-azure #33~20.04.1-Ubuntu
[ 37.936616] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090008 12/07/2018
[ 37.942683] RIP: 0010:__fput+0x247/0x250
[ 37.945531] Code: 00 48 85 ff 0f 84 8b fe ff ff f6 c7 40 0f 85 82 fe ff ff e8 ab 38 00 00 e9 78 fe ff ff 4c 89 f7 e8 2e 87 02 00 e9 b5 fe ff ff <0f> 0b 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 31 db 48
[ 37.956709] RSP: 0018:ffffaba0c00abd58 EFLAGS: 00010246
[ 37.960241] RAX: 0000000000000000 RBX: 00000000000a801d RCX: ffff99ce838a8000
[ 37.964698] RDX: ffff99ce8acf6b40 RSI: 0000000000000001 RDI: 0000000000000000
[ 37.969146] RBP: ffffaba0c00abd80 R08: 0000000000000010 R09: ffff99ce8cf29d58
[ 37.973767] R10: ffffaba0c00abd58 R11: ffff99cea3891b10 R12: ffff99cea3891b00
[ 37.978346] R13: ffff99ce8cf29d58 R14: ffff99ce8acf6b60 R15: ffff99ce8ce95600
[ 37.983277] FS: 0000000000000000(0000) GS:ffff99cff7d00000(0000) knlGS:0000000000000000
[ 37.988409] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 37.992409] CR2: 00007f3ef682c328 CR3: 000000014ad56002 CR4: 00000000003706e0
[ 37.997201] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 38.001836] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 38.006440] Call Trace:
[ 38.008503] <TASK>
[ 38.010375] ____fput+0xe/0x10
[ 38.012702] rcu_do_batch+0x177/0x4c0
[ 38.015387] rcu_core+0x19c/0x310
[ 38.017913] rcu_core_si+0xe/0x10
[ 38.020373] __do_softirq+0xc9/0x276
[ 38.022936] run_ksoftirqd+0x1e/0x30
[ 38.025516] smpboot_thread_fn+0xd0/0x170
[ 38.028414] ? sort_range+0x30/0x30
[ 38.031303] kthread+0x12b/0x150
[ 38.033760] ? set_kthread_struct+0x40/0x40
[ 38.036792] ret_from_fork+0x22/0x30
[ 38.039242] </TASK>
[ 38.041189] Modules linked in: veth xt_nat xt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo ip6table_nat ip6table_filter ip6_tables xt_addrtype iptable_filter iptable_nat nf_nat br_netfilter bridge stp llc aufs overlay nls_iso8859_1 dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_owner iptable_security xt_tcpudp bpfilter hv_balloon serio_raw joydev sch_fq_codel ipmi_devintf ipmi_msghandler drm msr i2c_core ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel hid_generic aesni_intel crypto_simd hid_hyperv cryptd pata_acpi hid hyperv_keyboard hyperv_fb hv_utils hv_netvsc
[ 38.085672] ---[ end trace 82874445d6a62ea5 ]---
[ 38.089520] RIP: 0010:__fput+0x247/0x250
[ 38.092642] Code: 00 48 85 ff 0f 84 8b fe ff ff f6 c7 40 0f 85 82 fe ff ff e8 ab 38 00 00 e9 78 fe ff ff 4c 89 f7 e8 2e 87 02 00 e9 b5 fe ff ff <0f> 0b 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 31 db 48
[ 38.104446] RSP: 0018:ffffaba0c3cdbde8 EFLAGS: 00010246
[ 38.107989] RAX: 0000000000000000 RBX: 00000000000a801d RCX: ffff99ce838a8000
[ 38.112672] RDX: ffff99ce8acf6b40 RSI: 0000000000000001 RDI: 0000000000000000
[ 38.117308] RBP: ffffaba0c3cdbe10 R08: 00000000000000a9 R09: ffff99ce8cf29d58
[ 38.122530] R10: ffffaba0c3cdbde8 R11: ffff99cea3891b10 R12: ffff99cea3891b00
[ 38.127267] R13: ffff99ce8cf29d58 R14: ffff99ce8acf6b60 R15: ffff99ce8ce95600
[ 38.132096] FS: 0000000000000000(0000) GS:ffff99cff7d00000(0000) knlGS:0000000000000000
[ 38.137175] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 38.140979] CR2: 00007f3ef682c328 CR3: 000000014ad56002 CR4: 00000000003706e0
[ 38.145906] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 38.150919] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 38.155713] Kernel panic - not syncing: Fatal exception in interrupt
[ 38.181193] Kernel Offset: 0x2be00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 38.188597] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---