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Date: Tue, 14 Mar 2023 16:45:26 +0800
From: kernel test robot <yujie.liu@...el.com>
To: Kemeng Shi <shikemeng@...weicloud.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
<linux-block@...r.kernel.org>, <paolo.valente@...aro.org>,
<axboe@...nel.dk>, <jack@...e.cz>, <linux-kernel@...r.kernel.org>,
<shikemeng@...weicloud.com>
Subject: Re: [PATCH 17/17] block, bfq: remove unnecessary local variable
__bfqq in bfq_setup_merge
Greeting,
FYI, we noticed maybe_for_address#:#[##] due to commit (built with gcc-11):
commit: 114533e1e26a36efa829659b34941a78b158b613 ("[PATCH 17/17] block, bfq: remove unnecessary local variable __bfqq in bfq_setup_merge")
url: https://github.com/intel-lab-lkp/linux/commits/Kemeng-Shi/block-bfq-properly-mark-bfqq-remained-idle/20230219-104312
base: https://git.kernel.org/cgit/linux/kernel/git/axboe/linux-block.git for-next
patch link: https://lore.kernel.org/all/20230219104309.1511562-18-shikemeng@huaweicloud.com/
patch subject: [PATCH 17/17] block, bfq: remove unnecessary local variable __bfqq in bfq_setup_merge
in testcase: blktests
version: blktests-x86_64-f28eb90-1_20230214
with following parameters:
disk: 1SSD
test: block-group-07
on test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <yujie.liu@...el.com>
| Link: https://lore.kernel.org/oe-lkp/202303141336.cc6f4cc8-yujie.liu@intel.com
[ 96.679266][ T1230] general protection fault, maybe for address 0x7: 0000 [#1] SMP KASAN PTI
[ 96.687702][ T1230] CPU: 3 PID: 1230 Comm: dd Not tainted 6.2.0-rc7-00473-g114533e1e26a #1
[ 96.695955][ T1230] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.8.1 12/05/2017
[ 96.704033][ T1230] RIP: 0010:bfq_setup_merge+0x210/0x460
[ 96.709428][ T1230] Code: 00 00 00 fc ff df 48 89 fa 41 0f 95 c5 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ea 01 00 00 <a0> 00 00 00 00 00 fc ff df 44 03 65 04 44 29 e3 44 29 f3 44 29 eb
[ 96.728893][ T1230] RSP: 0018:ffffc900028ef5a0 EFLAGS: 00010046
[ 96.734815][ T1230] RAX: 0000000000000007 RBX: 0000000000000001 RCX: 00000000fffcd90b
[ 96.742646][ T1230] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88880532cb04
[ 96.750463][ T1230] RBP: ffff88880532cb00 R08: 1ffff11100f59f7f R09: ffff888802356093
[ 96.758284][ T1230] R10: ffffed110046ac12 R11: 0000000000000001 R12: 0000000000000000
[ 96.766100][ T1230] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 96.773919][ T1230] FS: 00007f6ad3490580(0000) GS:ffff888791780000(0000) knlGS:0000000000000000
[ 96.782694][ T1230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 96.789124][ T1230] CR2: 000055822213cd38 CR3: 000000025d70c002 CR4: 00000000003706e0
[ 96.796943][ T1230] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 96.804762][ T1230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 96.812583][ T1230] Call Trace:
[ 96.815720][ T1230] <TASK>
[ 96.818511][ T1230] bfq_get_queue+0x736/0xb40
[ 96.822953][ T1230] bfq_get_bfqq_handle_split+0x124/0x5c0
[ 96.828434][ T1230] bfq_init_rq+0x301/0x1780
[ 96.832789][ T1230] ? radix_tree_node_alloc+0x183/0x2c0
[ 96.839138][ T1230] ? elv_merge+0x144/0x3c0
[ 96.843405][ T1230] ? __bfq_insert_request+0x1850/0x1850
[ 96.849406][ T1230] ? _raw_spin_lock_irq+0x86/0xe0
[ 96.854279][ T1230] ? _raw_spin_lock_bh+0xe0/0xe0
[ 96.859065][ T1230] bfq_insert_request+0xdd/0x700
[ 96.864458][ T1230] ? bfq_init_rq+0x1780/0x1780
[ 96.869070][ T1230] ? ioc_find_get_icq+0x195/0x220
[ 96.873944][ T1230] bfq_insert_requests+0x12e/0x220
[ 96.878903][ T1230] ? blk_mq_get_new_requests+0x28e/0x500
[ 96.884381][ T1230] blk_mq_sched_insert_request+0x26d/0x450
[ 96.890035][ T1230] ? blk_mq_sched_bio_merge+0x390/0x390
[ 96.895430][ T1230] ? internal_get_user_pages_fast+0xfa/0x210
[ 96.901257][ T1230] blk_mq_submit_bio+0xb28/0x11d0
[ 96.906132][ T1230] ? copy_page_from_iter_atomic+0x1140/0x1140
[ 96.912045][ T1230] ? blk_mq_try_issue_list_directly+0x310/0x310
[ 96.918129][ T1230] ? find_next_iomem_res+0x239/0x470
[ 96.923261][ T1230] submit_bio_noacct_nocheck+0x481/0x630
[ 96.928739][ T1230] ? should_fail_request+0x70/0x70
[ 96.933701][ T1230] ? __cond_resched+0x20/0x90
[ 96.938226][ T1230] ? bio_add_zone_append_page+0x2b0/0x2b0
[ 96.943794][ T1230] ? get_page_from_freelist+0x6a4/0xc60
[ 96.949187][ T1230] submit_bio_wait+0xfb/0x1f0
[ 96.953714][ T1230] ? __bio_clone+0x300/0x300
[ 96.958163][ T1230] ? bio_iov_iter_get_pages+0xa2/0x250
[ 96.963476][ T1230] ? bio_init+0x31b/0x580
[ 96.967663][ T1230] __blkdev_direct_IO_simple+0x3ef/0x710
[ 96.973149][ T1230] ? __blkdev_direct_IO_async+0x6f0/0x6f0
[ 96.978727][ T1230] ? current_time+0x77/0x220
[ 96.983171][ T1230] ? mode_strip_sgid+0x170/0x170
[ 96.987956][ T1230] ? submit_bio_wait+0x1f0/0x1f0
[ 96.992742][ T1230] ? folio_add_lru_vma+0x74/0xa0
[ 96.997530][ T1230] blkdev_read_iter+0x1f9/0x550
[ 97.002230][ T1230] vfs_read+0x577/0x800
[ 97.006237][ T1230] ? kernel_read+0x130/0x130
[ 97.010679][ T1230] ? __fget_light+0x51/0x220
[ 97.015120][ T1230] ksys_read+0xf1/0x1c0
[ 97.019124][ T1230] ? __ia32_sys_pwrite64+0x1e0/0x1e0
[ 97.024258][ T1230] ? fput+0x1d/0x130
[ 97.028004][ T1230] do_syscall_64+0x39/0x80
[ 97.032271][ T1230] entry_SYSCALL_64_after_hwframe+0x5e/0xc8
[ 97.038013][ T1230] RIP: 0033:0x7f6ad33a678e
[ 97.042279][ T1230] Code: c0 e9 b6 fe ff ff 50 48 8d 3d ee 04 0b 00 e8 a9 fd 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
[ 97.061718][ T1230] RSP: 002b:00007ffd930cfb08 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[ 97.069974][ T1230] RAX: ffffffffffffffda RBX: 0000000000001000 RCX: 00007f6ad33a678e
[ 97.077794][ T1230] RDX: 0000000000001000 RSI: 000055822213a000 RDI: 0000000000000000
[ 97.085616][ T1230] RBP: 000055822213a000 R08: 0000558222139d30 R09: 00007f6ad3489be0
[ 97.093436][ T1230] R10: ffffffffffffff3f R11: 0000000000000246 R12: 0000000000000000
[ 97.101257][ T1230] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004
[ 97.109078][ T1230] </TASK>
[ 97.111955][ T1230] Modules linked in: null_blk loop dm_multipath dm_mod btrfs ipmi_devintf ipmi_msghandler blake2b_generic xor raid6_pq zstd_compress libcrc32c intel_rapl_msr intel_rapl_common sd_mod t10_pi x86_pkg_temp_thermal crc64_rocksoft_generic intel_powerclamp crc64_rocksoft coretemp crc64 sg kvm_intel i915 kvm irqbypass drm_buddy crct10dif_pclmul intel_gtt crc32_pclmul crc32c_intel drm_display_helper mei_wdt ghash_clmulni_intel ahci ttm sha512_ssse3 rapl libahci wmi_bmof intel_cstate mei_me drm_kms_helper i2c_i801 syscopyarea intel_uncore mei sysfillrect libata video i2c_smbus intel_pch_thermal sysimgblt wmi intel_pmc_core acpi_pad drm fuse ip_tables [last unloaded: null_blk]
[ 97.172592][ T1230] ---[ end trace 0000000000000000 ]---
[ 97.177897][ T1230] RIP: 0010:bfq_setup_merge+0x210/0x460
[ 97.183291][ T1230] Code: 00 00 00 fc ff df 48 89 fa 41 0f 95 c5 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ea 01 00 00 <a0> 00 00 00 00 00 fc ff df 44 03 65 04 44 29 e3 44 29 f3 44 29 eb
[ 97.202748][ T1230] RSP: 0018:ffffc900028ef5a0 EFLAGS: 00010046
[ 97.208673][ T1230] RAX: 0000000000000007 RBX: 0000000000000001 RCX: 00000000fffcd90b
[ 97.216507][ T1230] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88880532cb04
[ 97.224335][ T1230] RBP: ffff88880532cb00 R08: 1ffff11100f59f7f R09: ffff888802356093
[ 97.232157][ T1230] R10: ffffed110046ac12 R11: 0000000000000001 R12: 0000000000000000
[ 97.239977][ T1230] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 97.247798][ T1230] FS: 00007f6ad3490580(0000) GS:ffff888791780000(0000) knlGS:0000000000000000
[ 97.256574][ T1230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 97.263007][ T1230] CR2: 000055822213cd38 CR3: 000000025d70c002 CR4: 00000000003706e0
[ 97.270826][ T1230] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 97.278649][ T1230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 97.286471][ T1230] Kernel panic - not syncing: Fatal exception
[ 98.355008][ T1230] Shutting down cpus with NMI
[ 98.359536][ T1230] Kernel Offset: disabled
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
sudo bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
sudo bin/lkp run generated-yaml-file
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
View attachment "config-6.2.0-rc7-00473-g114533e1e26a" of type "text/plain" (169544 bytes)
View attachment "job-script" of type "text/plain" (5717 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (40776 bytes)
View attachment "blktests" of type "text/plain" (173275 bytes)
View attachment "job.yaml" of type "text/plain" (4738 bytes)
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