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Date: Thu, 13 Sep 2018 14:54:35 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Jeff Layton <jlayton@...nel.org>
Cc: "Eric W. Biederman" <ebiederm@...ssion.com>,
LKML <linux-kernel@...r.kernel.org>,
Jeff Layton <jlayton@...hat.com>, lkp@...org
Subject: [LKP] [exec] aa68309976: WARNING:at_fs/file.c:#put_files_struct
FYI, we noticed the following commit (built with gcc-7):
commit: aa6830997649d2c31ef86dc657d7e1799309824d ("exec: separate thread_count for files_struct")
https://git.kernel.org/cgit/linux/kernel/git/jlayton/linux.git locks-execve
in testcase: mdadm-selftests
with following parameters:
disk: 1HDD
test_prefix: 10
on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 2 -m 4G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------------------------------------+-----------+------------+
| | v4.19-rc1 | aa68309976 |
+-------------------------------------------------------------------------------+-----------+------------+
| boot_successes | 730 | 7 |
| boot_failures | 191 | 96 |
| WARNING:at#for_ip_interrupt_entry/0x | 21 | |
| cpu_clock_throttled | 8 | |
| WARNING:stack_recursion | 111 | |
| WARNING:at#for_ip_swapgs_restore_regs_and_return_to_usermode/0x | 94 | |
| Kernel_panic-not_syncing:VFS:Unable_to_mount_root_fs_on_unknown-block(#,#) | 4 | |
| WARNING:at_ip__slab_free/0x | 2 | |
| WARNING:at_ip_ip_finish_output2/0x | 1 | |
| WARNING:at_ip_fsnotify/0x | 11 | |
| WARNING:at_ip_do_sys_poll/0x | 3 | |
| page_allocation_failure:order:#,mode:#(GFP_KERNEL|__GFP_COMP),nodemask=(null) | 1 | |
| Mem-Info | 11 | |
| WARNING:at_ip___perf_sw_event/0x | 1 | |
| WARNING:at_ip_io_submit_one/0x | 1 | |
| WARNING:at_ip__mutex_lock/0x | 1 | |
| WARNING:at_ip___sys_sendmsg/0x | 1 | |
| BUG:sleeping_function_called_from_invalid_context_at_mm/memory.c | 48 | |
| BUG:scheduling_while_atomic | 48 | |
| WARNING:at_lib/usercopy.c:#_copy_to_user | 48 | |
| RIP:_copy_to_user | 48 | |
| BUG:sleeping_function_called_from_invalid_context_at_mm/slab.h | 17 | |
| BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c | 16 | |
| invoked_oom-killer:gfp_mask=0x | 9 | |
| Out_of_memory:Kill_process | 8 | |
| WARNING:at_net/sched/sch_generic.c:#dev_watchdog | 2 | |
| RIP:dev_watchdog | 2 | |
| End_of_test:RCU_HOTPLUG | 3 | |
| WARNING:at_net/mac80211/tx.c:#__ieee80211_csa_update_counter[mac80211] | 3 | |
| RIP:__ieee80211_csa_update_counter[mac80211] | 3 | |
| RIP:_raw_spin_unlock_irqrestore | 1 | |
| RIP:console_unlock | 2 | |
| WARNING:at_fs/file.c:#put_files_struct | 0 | 96 |
| RIP:put_files_struct | 0 | 96 |
+-------------------------------------------------------------------------------+-----------+------------+
[ 537.421851] WARNING: CPU: 1 PID: 3465 at fs/file.c:419 put_files_struct+0xd2/0xe0
[ 537.445766] Modules linked in: multipath loop raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid10 raid1 raid0 sr_mod cdrom sg ppdev ata_generic pata_acpi snd_pcm snd_timer crc32c_intel snd soundcore pcspkr serio_raw ata_piix libata i2c_piix4 floppy parport_pc parport ip_tables
[ 537.508909] CPU: 1 PID: 3465 Comm: mdmon Not tainted 4.19.0-rc1-00001-gaa68309 #1
[ 537.522003] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 537.538662] RIP: 0010:put_files_struct+0xd2/0xe0
[ 537.547145] Code: 48 8d 45 28 49 39 c7 74 08 4c 89 ff e8 57 f3 ff ff 5b 48 89 ee 48 8b 3d ac b4 cd 01 5d 41 5c 41 5d 41 5e 41 5f e9 ee ff fa ff <0f> 0b eb d2 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 41 55 41
[ 537.576711] RSP: 0018:ffffc90002777ce8 EFLAGS: 00010202
[ 537.586268] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff8800792b53d8
[ 537.598828] RDX: 0000000000000040 RSI: 0000000000000186 RDI: ffffffff822ef144
[ 537.610816] RBP: ffff8800792b5340 R08: 0000000000000001 R09: 0000000000022640
[ 537.622716] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[ 537.634248] R13: 0000000000000001 R14: 0000000000000040 R15: ffff8800792b5368
[ 537.646011] FS: 00007f719e64b700(0000) GS:ffff88013fd00000(0000) knlGS:0000000000000000
[ 537.661759] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 537.672780] CR2: 00007f212a84a5b0 CR3: 000000000260a001 CR4: 00000000000206e0
[ 537.687914] Call Trace:
[ 537.696175] do_exit+0x2eb/0xbc0
[ 537.705516] ? __switch_to_asm+0x40/0x70
[ 537.714499] ? __switch_to_asm+0x40/0x70
[ 537.722399] ? __switch_to_asm+0x34/0x70
[ 537.730925] do_group_exit+0x3a/0xa0
[ 537.738803] get_signal+0x2ad/0x630
[ 537.747170] do_signal+0x36/0x650
[ 537.754599] ? do_nanosleep+0xdb/0x1c0
[ 537.762827] exit_to_usermode_loop+0x71/0xe0
[ 537.772154] do_syscall_64+0x16c/0x180
[ 537.779964] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 537.791337] RIP: 0033:0x7f719dd2928d
[ 537.799541] Code: Bad RIP value.
[ 537.806633] RSP: 002b:00007ffffd9497e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
[ 537.824313] RAX: fffffffffffffdfc RBX: 0000000000000000 RCX: 00007f719dd2928d
[ 537.846194] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffffd9497f0
[ 537.858490] RBP: 00007ffffd949840 R08: 0000000000000002 R09: 0000000000000000
[ 537.871059] R10: 00007ffffd949760 R11: 0000000000000293 R12: 000055d6405b9da0
[ 537.884786] R13: 00007ffffd949cb0 R14: 0000000000000000 R15: 0000000000000000
[ 537.896779] ---[ end trace c89f1ccb1fa11d49 ]---
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
Thanks,
Rong Chen
View attachment "config-4.19.0-rc1-00001-gaa68309" of type "text/plain" (167673 bytes)
View attachment "job-script" of type "text/plain" (4816 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (20824 bytes)
View attachment "mdadm-selftests" of type "text/plain" (2683 bytes)
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