[sorry for the adding you in CC]

While running LTP controllers test suite on this patch set applied on top of the next-20230406 and the following kernel panic noticed on qemu-x86_64.

Lore link: https://lore.kernel.org/linux-block/20230407200551.12660-1-michael.christie@...

cpuset_inherit 31 TPASS: mem_exclusive: Inherited information is right! cpuset_inherit 33 TPASS: mem_hardwall: Inherited information is right! <4>[ 1234.875309] int3: 0000 [#1] PREEMPT SMP PTI <4>[ 1234.875748] CPU: 1 PID: 32990 Comm: umount Not tainted 6.3.0-rc5-next-20230406 #1 <4>[ 1234.875946] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 <4>[ 1234.876062] RIP: 0010:__alloc_pages+0xdf/0x310 <4>[ 1234.876666] Code: 4c 89 45 b0 83 3d b8 1c cb 01 00 0f 85 a2 01 00 00 44 89 f0 c1 e8 03 83 e0 03 89 75 a0 89 45 c0 be 01 00 00 00 4c 89 45 98 0f <1f> 44 00 00 4d 89 c5 44 89 f0 44 89 75 a4 41 f7 c6 00 04 00 00 74 <4>[ 1234.876885] RSP: 0000:ffff8b9305f47c10 EFLAGS: 00000202 <4>[ 1234.877418] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 <4>[ 1234.877433] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000140cca <4>[ 1234.877446] RBP: ffff8b9305f47c78 R08: 0000000000000000 R09: 0000000000000000 <4>[ 1234.877460] R10: 0000000000100cca R11: 0000000000000000 R12: 0000000000000003 <4>[ 1234.877472] R13: ffff88d28b753b00 R14: 0000000000140cca R15: ffff88d2ffffb300 <4>[ 1234.877518] FS: 0000000000000000(0000) GS:ffff88d2fbd00000(0000) knlGS:0000000000000000 <4>[ 1234.877547] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4>[ 1234.877568] CR2: 0000000000408ee0 CR3: 0000000111432000 CR4: 00000000000006e0 <4>[ 1234.877662] Call Trace: <4>[ 1234.877828] <TASK> <4>[ 1234.877954] __folio_alloc+0x1e/0x50 <4>[ 1234.878051] vma_alloc_folio+0x4af/0x520 <4>[ 1234.878066] ? _raw_spin_unlock+0x1a/0x40 <4>[ 1234.878079] ? do_wp_page+0x164/0xdd0 <4>[ 1234.878093] ? trace_preempt_on+0x1e/0x80 <4>[ 1234.878105] ? preempt_count_sub+0x63/0x80 <4>[ 1234.878118] do_wp_page+0x3cb/0xdd0 <4>[ 1234.878129] ? handle_mm_fault+0x739/0x19e0 <4>[ 1234.878142] ? _raw_spin_lock+0x23/0x50 <4>[ 1234.878159] handle_mm_fault+0x770/0x19e0 <4>[ 1234.878170] ? up_write+0x52/0xe0 <4>[ 1234.878196] do_user_addr_fault+0x4d4/0x6c0 <4>[ 1234.878210] ? trace_hardirqs_off_finish+0x38/0x90 <4>[ 1234.878222] exc_page_fault+0x80/0x1d0 <4>[ 1234.878234] asm_exc_page_fault+0x2b/0x30 <4>[ 1234.878291] RIP: 0033:0x7f3f910e65f6 <4>[ 1234.878542] Code: 2f 0a 00 00 e8 5b 23 ff ff 48 89 85 60 fd ff ff 48 8b 85 88 fd ff ff 48 8b 80 e8 00 00 00 48 85 c0 74 0b 48 8b 9d 68 fd ff ff <48> 89 58 08 48 8b 85 68 fd ff ff c7 40 18 01 00 00 00 e8 43 2b fe <4>[ 1234.878552] RSP: 002b:00007fff6f8dce50 EFLAGS: 00000206 <4>[ 1234.878563] RAX: 0000000000408ed8 RBX: 00007f3f910fe0d8 RCX: 00007f3f910c6270 <4>[ 1234.878569] RDX: 0000000000000000 RSI: 00007f3f910fe2a0 RDI: 00007fff6f8dcf10 <4>[ 1234.878575] RBP: 00007fff6f8dd110 R08: 0000000000000000 R09: 0000000000000007 <4>[ 1234.878581] R10: 0000000000000000 R11: 0000000000000008 R12: 0000000000000000 <4>[ 1234.878585] R13: 00007f3f910fe2a0 R14: 00007fff6f8dced0 R15: 0000000000000000 <4>[ 1234.878636] </TASK> <4>[ 1234.878693] Modules linked in: <4>[ 1234.894886] ---[ end trace 0000000000000000 ]--- <4>[ 1234.895879] RIP: 0010:__alloc_pages+0xdf/0x310 <4>[ 1234.895921] Code: 4c 89 45 b0 83 3d b8 1c cb 01 00 0f 85 a2 01 00 00 44 89 f0 c1 e8 03 83 e0 03 89 75 a0 89 45 c0 be 01 00 00 00 4c 89 45 98 0f <1f> 44 00 00 4d 89 c5 44 89 f0 44 89 75 a4 41 f7 c6 00 04 00 00 74 <4>[ 1234.895936] RSP: 0000:ffff8b9305f47c10 EFLAGS: 00000202 <4>[ 1234.895956] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 <4>[ 1234.895966] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000140cca <4>[ 1234.895977] RBP: ffff8b9305f47c78 R08: 0000000000000000 R09: 0000000000000000 <4>[ 1234.895985] R10: 0000000000100cca R11: 0000000000000000 R12: 0000000000000003 <4>[ 1234.895993] R13: ffff88d28b753b00 R14: 0000000000140cca R15: ffff88d2ffffb300 <4>[ 1234.896003] FS: 0000000000000000(0000) GS:ffff88d2fbd00000(0000) knlGS:0000000000000000 <4>[ 1234.896016] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4>[ 1234.896026] CR2: 0000000000408ee0 CR3: 0000000111432000 CR4: 00000000000006e0 <0>[ 1234.896379] Kernel panic - not syncing: Fatal exception in interrupt <0>[ 1234.900046] Kernel Offset: 0x8800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)

Links: https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/lo... https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/lo...

https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/lo... https://qa-reports.linaro.org/~anders.roxell/linux-mainline-patches/build/lo...

Steps to reproduce: -------------------

# To install tuxrun on your system globally: # sudo pip3 install -U tuxrun==0.41.0 # # See https://tuxrun.org/ for complete documentation.

tuxrun \ --runtime podman \ --device qemu-x86_64 \ --kernel https://storage.tuxsuite.com/public/linaro/anders/builds/2OGpdVeBBG4Gj6aACnS... \ --modules https://storage.tuxsuite.com/public/linaro/anders/builds/2OGpdVeBBG4Gj6aACnS... \ --rootfs https://storage.tuxsuite.com/public/linaro/lkft/oebuilds/2OFRZUnV2Q9jOFdE3gH... \ --parameters SKIPFILE=skipfile-lkft.yaml \ --parameters SHARD_NUMBER=10 \ --parameters SHARD_INDEX=10 \ --image docker.io/lavasoftware/lava-dispatcher:2023.01.0020.gc1598238f \ --tests ltp-controllers \ --timeouts boot=15 ltp-controllers=80

-- Linaro LKFT https://lkft.linaro.org