WSL2 freezes randomly during apt upgrade on fresh Ubuntu install #41213

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1. github-actions commented on Jul 30, 2026

   

   github-actionsBot

   on Jul 30, 2026 – with GitHub Actions

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   Diagnostic information

   .wslconfig found
   Detected appx version: 2.7.11.0
   Detected user visible error: Wsl/Service/CreateInstance/E_UNEXPECTED
   Found evidence of kernel panic: [    1.715854] Kernel panic - not syncing: Fatal exception
   
2. ChenPi11 commented on Jul 31, 2026

   

   ChenPi11 (ChenPi11)

   on Jul 31, 2026

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   Get stuck when post-upgrading libc6:amd64?
3. ChenPi11 commented on Jul 31, 2026

   

   ChenPi11 (ChenPi11)

   on Jul 31, 2026

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   Or other package's post-upgrading? Or get stuck when extracting packages?
4. chemwolf6922 commented on Aug 4, 2026

   

   Feng Wang (chemwolf6922)

   on Aug 4, 2026

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   This looks like a duplicate of #41191. Please help take a look Mitchell Levy (@chessturo) .

   [    1.704618] ------------[ cut here ]------------
   [    1.705233] kernel BUG at fs/namei.c:844!
   [    1.705545] Oops: invalid opcode: 0000 [#1] SMP NOPTI
   [    1.705885] CPU: 27 UID: 0 PID: 322 Comm: ldconfig Not tainted 6.18.33.2-microsoft-standard-WSL2 #1 PREEMPT(none) 
   [    1.706250] RIP: 0010:try_to_unlazy+0xbc/0xe0
   [    1.706393] Code: ff 84 c0 75 b8 81 63 38 ff fe ff ff 45 31 e4 48 c7 43 40 00 00 00 00 e8 12 c1 d0 ff 44 89 e0 5b 41 5c 41 5d 5d c3 cc cc cc cc <0f> 0b 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 eb c8 0f 0b 66
   [    1.707182] RSP: 0018:ffffcfe44b253bb0 EFLAGS: 00010246
   [    1.707329] RAX: 0000000000000001 RBX: ffffcfe44b253c30 RCX: 0000000000000000
   [    1.707539] RDX: 0000000000000000 RSI: 00000000000002ae RDI: ffffcfe44b253c30
   [    1.707748] RBP: ffffcfe44b253bc8 R08: 0000000000000064 R09: ffffffffffffffcf
   [    1.707945] R10: 0000000000000011 R11: ffff8d984cc84c00 R12: ffff8d984dcd1800
   [    1.708142] R13: ffff8d984dcd1800 R14: 0000000000000000 R15: ffffcfe44b253d78
   [    1.708339] FS:  000055558c5043c0(0000) GS:ffff8d997c287000(0000) knlGS:0000000000000000
   [    1.708547] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
   [    1.708727] CR2: 000055558c534000 CR3: 000000010eaa3006 CR4: 0000000000b70ef0
   [    1.708925] Call Trace:
   [    1.709005]  <TASK>
   [    1.709084]  complete_walk+0x43/0xb0
   [    1.709195]  path_lookupat+0x9c/0x180
   [    1.709307]  filename_lookup+0xe2/0x1e0
   [    1.709418]  ? __x64_sys_newfstatat+0x20/0x30
   [    1.709562]  ? x64_sys_call+0x1b1d/0x20f0
   [    1.709674]  vfs_statx+0x69/0x100
   [    1.709802]  vfs_fstatat+0x83/0xc0
   [    1.709905]  __do_sys_newfstatat+0x29/0x60
   [    1.710040]  ? __seccomp_filter+0x39/0x5c0
   [    1.710158]  ? __secure_computing+0x7d/0xd0
   [    1.710271]  __x64_sys_newfstatat+0x20/0x30
   [    1.710383]  x64_sys_call+0x1b1d/0x20f0
   [    1.710493]  do_syscall_64+0x73/0x990
   [    1.710607]  ? irqentry_exit+0x3f/0x50
   [    1.710718]  ? exc_page_fault+0x7f/0x170
   [    1.710925]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
   [    1.711092] RIP: 0033:0x7658f7c404ee
   [    1.711212] Code: ff ff ff 64 c7 00 09 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 0b 31 c0 c3 0f 1f 84 00 00 00 00 00 48 c7 c2 b0
   [    1.711720] RSP: 002b:00007fffdfd97bc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
   [    1.711924] RAX: ffffffffffffffda RBX: 000055558c5124f0 RCX: 00007658f7c404ee
   [    1.712135] RDX: 00007fffdfd97cd0 RSI: 00007fffdfd97bd0 RDI: 00000000ffffff9c
   [    1.712343] RBP: 00007fffdfd97e20 R08: 0000000000000073 R09: 0000000000000000
   [    1.712539] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffdfd97bd0
   [    1.712747] R13: 00007fffdfd97bd0 R14: 000055558c512470 R15: 000055558c505c70
   [    1.712975]  </TASK>
   [    1.713045] Modules linked in: br_netfilter bridge stp llc ip_tables tun
   [    1.713233] ---[ end trace 0000000000000000 ]---
   [    1.713369] RIP: 0010:try_to_unlazy+0xbc/0xe0
   [    1.713506] Code: ff 84 c0 75 b8 81 63 38 ff fe ff ff 45 31 e4 48 c7 43 40 00 00 00 00 e8 12 c1 d0 ff 44 89 e0 5b 41 5c 41 5d 5d c3 cc cc cc cc <0f> 0b 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 eb c8 0f 0b 66
   [    1.713996] RSP: 0018:ffffcfe44b253bb0 EFLAGS: 00010246
   [    1.714132] RAX: 0000000000000001 RBX: ffffcfe44b253c30 RCX: 0000000000000000
   [    1.714341] RDX: 0000000000000000 RSI: 00000000000002ae RDI: ffffcfe44b253c30
   [    1.714543] RBP: ffffcfe44b253bc8 R08: 0000000000000064 R09: ffffffffffffffcf
   [    1.714742] R10: 0000000000000011 R11: ffff8d984cc84c00 R12: ffff8d984dcd1800
   [    1.715007] R13: ffff8d984dcd1800 R14: 0000000000000000 R15: ffffcfe44b253d78
   [    1.715255] FS:  000055558c5043c0(0000) GS:ffff8d997c287000(0000) knlGS:0000000000000000
   [    1.715470] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
   [    1.715647] CR2: 000055558c534000 CR3: 000000010eaa3006 CR4: 0000000000b70ef0
   [    1.715854] Kernel panic - not syncing: Fatal exception
   [    1.716285] Kernel Offset: 0x34000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
   
5. Feng Wang (chemwolf6922)

   added

   kernelWSL kernelWSL kernel

   wsl2Issue/feature applies to WSL 2Issue/feature applies to WSL 2

   on Aug 4, 2026
6. Mitchell Levy (chessturo)

   self-assigned this

   on Aug 4, 2026
7. chessturo commented on Aug 17, 2026

   

   Mitchell Levy (chessturo)

   on Aug 17, 2026

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   Feng Wang (@chemwolf6922) yeah I agree this looks like a dup of #41191
8. Mitchell Levy (chessturo)

   closed this as a duplicateof Kernel BUG at fs/namei.c:844 (try_to_unlazy) after 9P/virtiofs channel disruption causes WSL2 crash #41191 on Aug 17, 2026