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Message-ID: <20210820070300.GB29369@xsang-OptiPlex-9020>
Date: Fri, 20 Aug 2021 15:03:00 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Jens Axboe <axboe@...nel.dk>
Cc: Christoph Hellwig <hch@....de>,
LKML <linux-kernel@...r.kernel.org>,
Linux Memory Management List <linux-mm@...ck.org>,
lkp@...ts.01.org, lkp@...el.com
Subject: [bio] a4aa1b0494: BUG:kernel_NULL_pointer_dereference,address
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: a4aa1b0494ea9e90022c4d9ff6d99aaf211cdf7c ("bio: optimize initialization of a bio")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: blktests
version: blktests-x86_64-62ec9d6-1_20210818
with following parameters:
test: srp-group-01
ucode: 0xe2
on test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz 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 <oliver.sang@...el.com>
[ 28.320872][ T1121] BUG: kernel NULL pointer dereference, address: 0000000000000336
[ 28.328534][ T1121] #PF: supervisor read access in kernel mode
[ 28.334370][ T1121] #PF: error_code(0x0000) - not-present page
[ 28.340220][ T1121] PGD 0 P4D 0
[ 28.343460][ T1121] Oops: 0000 [#1] SMP PTI
[ 28.347647][ T1121] CPU: 0 PID: 1121 Comm: dd Tainted: G I 5.14.0-rc5-00049-ga4aa1b0494ea #1
[ 28.357403][ T1121] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.1.1 10/07/2015
[ 28.365515][ T1121] RIP: 0010:bio_integrity_alloc (block/bio-integrity.c:59 (discriminator 1))
[ 28.371179][ T1121] Code: 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 41 56 41 55 41 89 f5 41 54 55 89 d5 53 4c 8b 77 70 48 89 fb 4d 85 f6 74 7f <49> 83 be b0 00 00 00 00 74 75 49 8d be a0 00 00 00 e8 4c 49 c9 ff
All code
========
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
8: 0f 1f 40 00 nopl 0x0(%rax)
c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
11: 41 56 push %r14
13: 41 55 push %r13
15: 41 89 f5 mov %esi,%r13d
18: 41 54 push %r12
1a: 55 push %rbp
1b: 89 d5 mov %edx,%ebp
1d: 53 push %rbx
1e: 4c 8b 77 70 mov 0x70(%rdi),%r14
22: 48 89 fb mov %rdi,%rbx
25: 4d 85 f6 test %r14,%r14
28: 74 7f je 0xa9
2a:* 49 83 be b0 00 00 00 cmpq $0x0,0xb0(%r14) <-- trapping instruction
31: 00
32: 74 75 je 0xa9
34: 49 8d be a0 00 00 00 lea 0xa0(%r14),%rdi
3b: e8 4c 49 c9 ff callq 0xffffffffffc9498c
Code starting with the faulting instruction
===========================================
0: 49 83 be b0 00 00 00 cmpq $0x0,0xb0(%r14)
7: 00
8: 74 75 je 0x7f
a: 49 8d be a0 00 00 00 lea 0xa0(%r14),%rdi
11: e8 4c 49 c9 ff callq 0xffffffffffc94962
[ 28.390663][ T1121] RSP: 0018:ffffc900009d7ad8 EFLAGS: 00010202
[ 28.396597][ T1121] RAX: 000ffff88885d4e0 RBX: ffffc900009d7c90 RCX: 0000000000000002
[ 28.404433][ T1121] RDX: 0000000000000002 RSI: 0000000000000c00 RDI: ffffc900009d7c90
[ 28.412279][ T1121] RBP: 0000000000000002 R08: 0000000000002000 R09: 0000000000000400
[ 28.420108][ T1121] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000002000
[ 28.427944][ T1121] R13: 0000000000000c00 R14: 0000000000000286 R15: ffff888861f6a800
[ 28.435775][ T1121] FS: 00007f923909f580(0000) GS:ffff88882da00000(0000) knlGS:0000000000000000
[ 28.444561][ T1121] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 28.451008][ T1121] CR2: 0000000000000336 CR3: 000000085f4a6001 CR4: 00000000003706f0
[ 28.458839][ T1121] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 28.466669][ T1121] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 28.474501][ T1121] Call Trace:
[ 28.477643][ T1121] bio_integrity_prep (block/bio-integrity.c:252)
[ 28.482435][ T1121] blk_mq_submit_bio (block/blk-mq.c:2192)
[ 28.487142][ T1121] submit_bio_noacct (block/blk-core.c:1011 block/blk-core.c:1044)
[ 28.491934][ T1121] ? __blkdev_direct_IO_simple (fs/block_dev.c:285)
[ 28.497594][ T1121] __blkdev_direct_IO_simple (fs/block_dev.c:283)
[ 28.503081][ T1121] ? __handle_mm_fault (mm/memory.c:4556 mm/memory.c:4693)
[ 28.508059][ T1121] ? kernel_init_free_pages+0x4d/0x80
[ 28.513892][ T1121] ? blkdev_get_block (fs/block_dev.c:224)
[ 28.518601][ T1121] generic_file_direct_write (mm/filemap.c:3558)
[ 28.524008][ T1121] __generic_file_write_iter (mm/filemap.c:3740)
[ 28.529420][ T1121] blkdev_write_iter (fs/block_dev.c:1645)
[ 28.534124][ T1121] new_sync_write (fs/read_write.c:519 (discriminator 1))
[ 28.538669][ T1121] vfs_write (fs/read_write.c:605)
[ 28.542765][ T1121] ksys_write (fs/read_write.c:658)
[ 28.546866][ T1121] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80)
[ 28.551137][ T1121] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:113)
[ 28.556890][ T1121] RIP: 0033:0x7f9238fc7504
[ 28.561174][ T1121] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 48 8d 05 f9 61 0d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53
All code
========
0: 00 f7 add %dh,%bh
2: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4)
6: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax
d: eb b3 jmp 0xffffffffffffffc2
f: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
16: 48 8d 05 f9 61 0d 00 lea 0xd61f9(%rip),%rax # 0xd6216
1d: 8b 00 mov (%rax),%eax
1f: 85 c0 test %eax,%eax
21: 75 13 jne 0x36
23: b8 01 00 00 00 mov $0x1,%eax
28: 0f 05 syscall
2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction
30: 77 54 ja 0x86
32: c3 retq
33: 0f 1f 00 nopl (%rax)
36: 41 54 push %r12
38: 49 89 d4 mov %rdx,%r12
3b: 55 push %rbp
3c: 48 89 f5 mov %rsi,%rbp
3f: 53 push %rbx
Code starting with the faulting instruction
===========================================
0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
6: 77 54 ja 0x5c
8: c3 retq
9: 0f 1f 00 nopl (%rax)
c: 41 54 push %r12
e: 49 89 d4 mov %rdx,%r12
11: 55 push %rbp
12: 48 89 f5 mov %rsi,%rbp
15: 53 push %rbx
[ 28.580650][ T1121] RSP: 002b:00007ffcec240428 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 28.588927][ T1121] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9238fc7504
[ 28.596771][ T1121] RDX: 0000000000100000 RSI: 00007f9238c32000 RDI: 0000000000000001
[ 28.604617][ T1121] RBP: 0000000000100000 R08: 00000000ffffffff R09: 0000000000000000
[ 28.607231][ T348] job=/lkp/jobs/scheduled/lkp-skl-d03/blktests-srp-group-01-ucode=0xe2-debian-10.4-x86_64-20200603.cgz-a4aa1b0494ea9e90022c4d9ff6d99aaf211cdf7c-20210820-43875-1u57eak-2.yaml
[ 28.612453][ T1121] R10: ffffffffffffff3b R11: 0000000000000246 R12: 00007f9238c32000
[ 28.612454][ T1121] R13: 0000000000000000 R14: 0000000000000000 R15: 00007f9238c32000
[ 28.612455][ T1121] Modules linked in: ib_srpt
[ 28.629500][ T348]
[ 28.637329][ T1121] target_core_iblock target_core_mod rdma_cm iw_cm ib_cm ib_umad scsi_debug rdma_rxe ip6_udp_tunnel udp_tunnel ib_uverbs null_blk ib_core loop xfs libcrc32c dm_multipath dm_mod ipmi_devintf ipmi_msghandler sd_mod t10_pi sg intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel i915 kvm intel_gtt ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops irqbypass crct10dif_pclmul drm mei_wdt wmi_bmof crc32_pclmul ahci crc32c_intel ghash_clmulni_intel libahci mei_me rapl intel_cstate mei intel_pch_thermal intel_uncore libata wmi video intel_pmc_core acpi_pad ip_tables
[ 28.707256][ T1121] CR2: 0000000000000336
[ 28.711267][ T1121] ---[ end trace fc7c690e5cba113e ]---
[ 28.716649][ T1121] RIP: 0010:bio_integrity_alloc (block/bio-integrity.c:59 (discriminator 1))
[ 28.722310][ T1121] Code: 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 41 56 41 55 41 89 f5 41 54 55 89 d5 53 4c 8b 77 70 48 89 fb 4d 85 f6 74 7f <49> 83 be b0 00 00 00 00 74 75 49 8d be a0 00 00 00 e8 4c 49 c9 ff
All code
========
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
8: 0f 1f 40 00 nopl 0x0(%rax)
c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
11: 41 56 push %r14
13: 41 55 push %r13
15: 41 89 f5 mov %esi,%r13d
18: 41 54 push %r12
1a: 55 push %rbp
1b: 89 d5 mov %edx,%ebp
1d: 53 push %rbx
1e: 4c 8b 77 70 mov 0x70(%rdi),%r14
22: 48 89 fb mov %rdi,%rbx
25: 4d 85 f6 test %r14,%r14
28: 74 7f je 0xa9
2a:* 49 83 be b0 00 00 00 cmpq $0x0,0xb0(%r14) <-- trapping instruction
31: 00
32: 74 75 je 0xa9
34: 49 8d be a0 00 00 00 lea 0xa0(%r14),%rdi
3b: e8 4c 49 c9 ff callq 0xffffffffffc9498c
Code starting with the faulting instruction
===========================================
0: 49 83 be b0 00 00 00 cmpq $0x0,0xb0(%r14)
7: 00
8: 74 75 je 0x7f
a: 49 8d be a0 00 00 00 lea 0xa0(%r14),%rdi
11: e8 4c 49 c9 ff callq 0xffffffffffc94962
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
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
bin/lkp run generated-yaml-file
---
0DAY/LKP+ Test Infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation
Thanks,
Oliver Sang
View attachment "config-5.14.0-rc5-00049-ga4aa1b0494ea" of type "text/plain" (175472 bytes)
View attachment "job-script" of type "text/plain" (5837 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (21588 bytes)
View attachment "job.yaml" of type "text/plain" (4596 bytes)
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