From: Dave Jones <davej@codemonkey.org.uk>
To: linux-mm@kvack.org
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: 4.5-rc1: mm/gup.c warning when writing to /proc/self/mem
Date: Sat, 30 Jan 2016 12:58:31 -0500 [thread overview]
Message-ID: <20160130175831.GA30571@codemonkey.org.uk> (raw)
Hit this overnight. Just started seeing this after I added "create mmap's
of fd's we open()'d" to trinity.
Dave
WARNING: CPU: 1 PID: 16733 at mm/gup.c:434 __get_user_pages+0x5f9/0x990()
CPU: 1 PID: 16733 Comm: trinity-c30 Tainted: G W 4.5.0-rc1-think+ #12
0000000000000009 000000006648ff5c ffff88000f0779a0 ffffffff99565971
------------[ cut here ]------------
WARNING: CPU: 0 PID: 16731 at mm/gup.c:434 __get_user_pages+0x5f9/0x990()
0000000000000000 ffff88000f0779e0 ffffffff990b168f ffffffff992aba69
ffff880450cf1000 0000000000000000 ffff88023780e600 0000000000000017
Call Trace:
[<ffffffff99565971>] dump_stack+0x4e/0x7d
[<ffffffff990b168f>] warn_slowpath_common+0x9f/0xe0
[<ffffffff992aba69>] ? __get_user_pages+0x5f9/0x990
[<ffffffff990b18aa>] warn_slowpath_null+0x1a/0x20
[<ffffffff992aba69>] __get_user_pages+0x5f9/0x990
[<ffffffff992ab470>] ? follow_page_mask+0x530/0x530
[<ffffffff992ad54a>] ? __access_remote_vm+0xca/0x340
[<ffffffff992ac2e2>] get_user_pages+0x52/0x60
[<ffffffff992ad610>] __access_remote_vm+0x190/0x340
[<ffffffff990f2531>] ? preempt_count_sub+0xc1/0x120
[<ffffffff992ad480>] ? __might_fault+0xf0/0xf0
[<ffffffff992ad417>] ? __might_fault+0x87/0xf0
[<ffffffff992b607f>] access_remote_vm+0x1f/0x30
[<ffffffff993c5703>] mem_rw.isra.15+0xe3/0x1d0
[<ffffffff993c5833>] mem_write+0x43/0x50
[<ffffffff9930a6ed>] __vfs_write+0xdd/0x260
[<ffffffff9930a610>] ? __vfs_read+0x260/0x260
[<ffffffff99d136cb>] ? mutex_lock_nested+0x38b/0x590
[<ffffffff99133152>] ? __lock_is_held+0x92/0xd0
[<ffffffff990f2531>] ? preempt_count_sub+0xc1/0x120
[<ffffffff99131035>] ? update_fast_ctr+0x65/0x90
[<ffffffff991310e7>] ? percpu_down_read+0x57/0xa0
[<ffffffff99310bc4>] ? __sb_start_write+0xb4/0xf0
[<ffffffff9930bec6>] vfs_write+0xf6/0x260
[<ffffffff9930d84f>] SyS_write+0xbf/0x160
[<ffffffff9930d790>] ? SyS_read+0x160/0x160
[<ffffffff99002017>] ? trace_hardirqs_on_thunk+0x17/0x19
[<ffffffff99d19557>] entry_SYSCALL_64_fastpath+0x12/0x6b
CPU: 0 PID: 16731 Comm: trinity-c28 Tainted: G W 4.5.0-rc1-think+ #12
0000000000000009 000000002962eec9 ffff8802e7b7f8d8 ffffffff99565971
0000000000000000 ffff8802e7b7f918 ffffffff990b168f ffffffff992aba69
ffff8803ed6f1000 00000000000000a0 ffff88023780e600 0000000000000017
Call Trace:
[<ffffffff99565971>] dump_stack+0x4e/0x7d
[<ffffffff990b168f>] warn_slowpath_common+0x9f/0xe0
[<ffffffff992aba69>] ? __get_user_pages+0x5f9/0x990
[<ffffffff990b18aa>] warn_slowpath_null+0x1a/0x20
[<ffffffff992aba69>] __get_user_pages+0x5f9/0x990
[<ffffffff99015979>] ? native_sched_clock+0x69/0x160
[<ffffffff992ab470>] ? follow_page_mask+0x530/0x530
[<ffffffff992ad54a>] ? __access_remote_vm+0xca/0x340
[<ffffffff992ac2e2>] get_user_pages+0x52/0x60
[<ffffffff992ad610>] __access_remote_vm+0x190/0x340
[<ffffffff990f2531>] ? preempt_count_sub+0xc1/0x120
[<ffffffff992ad480>] ? __might_fault+0xf0/0xf0
[<ffffffff992ad417>] ? __might_fault+0x87/0xf0
[<ffffffff992b607f>] access_remote_vm+0x1f/0x30
[<ffffffff993c5703>] mem_rw.isra.15+0xe3/0x1d0
[<ffffffff993c5833>] mem_write+0x43/0x50
[<ffffffff9930a950>] do_loop_readv_writev+0xe0/0x110
[<ffffffff993c57f0>] ? mem_rw.isra.15+0x1d0/0x1d0
[<ffffffff9930c3bb>] do_readv_writev+0x38b/0x3c0
[<ffffffff99132960>] ? trace_hardirqs_off_caller+0x70/0x110
[<ffffffff993c57f0>] ? mem_rw.isra.15+0x1d0/0x1d0
[<ffffffff9930c030>] ? vfs_write+0x260/0x260
[<ffffffff99595e17>] ? debug_smp_processor_id+0x17/0x20
[<ffffffff990f2531>] ? preempt_count_sub+0xc1/0x120
[<ffffffff991330e5>] ? __lock_is_held+0x25/0xd0
[<ffffffff991381e3>] ? mark_held_locks+0x23/0xc0
[<ffffffff9926080a>] ? context_tracking_exit.part.5+0x2a/0x50
[<ffffffff99138406>] ? trace_hardirqs_on_caller+0x186/0x280
[<ffffffff9913850d>] ? trace_hardirqs_on+0xd/0x10
[<ffffffff9930c4b9>] vfs_writev+0x59/0x70
[<ffffffff9930e2fd>] SyS_pwritev+0x15d/0x180
[<ffffffff9930e1a0>] ? SyS_preadv+0x180/0x180
[<ffffffff99002017>] ? trace_hardirqs_on_thunk+0x17/0x19
[<ffffffff99d19557>] entry_SYSCALL_64_fastpath+0x12/0x6b
---[ end trace 96115a52264cceaf ]---
---[ end trace 96115a52264cceb0 ]---
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Dave Jones <davej@codemonkey.org.uk>
To: linux-mm@kvack.org
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: 4.5-rc1: mm/gup.c warning when writing to /proc/self/mem
Date: Sat, 30 Jan 2016 12:58:31 -0500 [thread overview]
Message-ID: <20160130175831.GA30571@codemonkey.org.uk> (raw)
Hit this overnight. Just started seeing this after I added "create mmap's
of fd's we open()'d" to trinity.
Dave
WARNING: CPU: 1 PID: 16733 at mm/gup.c:434 __get_user_pages+0x5f9/0x990()
CPU: 1 PID: 16733 Comm: trinity-c30 Tainted: G W 4.5.0-rc1-think+ #12
0000000000000009 000000006648ff5c ffff88000f0779a0 ffffffff99565971
------------[ cut here ]------------
WARNING: CPU: 0 PID: 16731 at mm/gup.c:434 __get_user_pages+0x5f9/0x990()
0000000000000000 ffff88000f0779e0 ffffffff990b168f ffffffff992aba69
ffff880450cf1000 0000000000000000 ffff88023780e600 0000000000000017
Call Trace:
[<ffffffff99565971>] dump_stack+0x4e/0x7d
[<ffffffff990b168f>] warn_slowpath_common+0x9f/0xe0
[<ffffffff992aba69>] ? __get_user_pages+0x5f9/0x990
[<ffffffff990b18aa>] warn_slowpath_null+0x1a/0x20
[<ffffffff992aba69>] __get_user_pages+0x5f9/0x990
[<ffffffff992ab470>] ? follow_page_mask+0x530/0x530
[<ffffffff992ad54a>] ? __access_remote_vm+0xca/0x340
[<ffffffff992ac2e2>] get_user_pages+0x52/0x60
[<ffffffff992ad610>] __access_remote_vm+0x190/0x340
[<ffffffff990f2531>] ? preempt_count_sub+0xc1/0x120
[<ffffffff992ad480>] ? __might_fault+0xf0/0xf0
[<ffffffff992ad417>] ? __might_fault+0x87/0xf0
[<ffffffff992b607f>] access_remote_vm+0x1f/0x30
[<ffffffff993c5703>] mem_rw.isra.15+0xe3/0x1d0
[<ffffffff993c5833>] mem_write+0x43/0x50
[<ffffffff9930a6ed>] __vfs_write+0xdd/0x260
[<ffffffff9930a610>] ? __vfs_read+0x260/0x260
[<ffffffff99d136cb>] ? mutex_lock_nested+0x38b/0x590
[<ffffffff99133152>] ? __lock_is_held+0x92/0xd0
[<ffffffff990f2531>] ? preempt_count_sub+0xc1/0x120
[<ffffffff99131035>] ? update_fast_ctr+0x65/0x90
[<ffffffff991310e7>] ? percpu_down_read+0x57/0xa0
[<ffffffff99310bc4>] ? __sb_start_write+0xb4/0xf0
[<ffffffff9930bec6>] vfs_write+0xf6/0x260
[<ffffffff9930d84f>] SyS_write+0xbf/0x160
[<ffffffff9930d790>] ? SyS_read+0x160/0x160
[<ffffffff99002017>] ? trace_hardirqs_on_thunk+0x17/0x19
[<ffffffff99d19557>] entry_SYSCALL_64_fastpath+0x12/0x6b
CPU: 0 PID: 16731 Comm: trinity-c28 Tainted: G W 4.5.0-rc1-think+ #12
0000000000000009 000000002962eec9 ffff8802e7b7f8d8 ffffffff99565971
0000000000000000 ffff8802e7b7f918 ffffffff990b168f ffffffff992aba69
ffff8803ed6f1000 00000000000000a0 ffff88023780e600 0000000000000017
Call Trace:
[<ffffffff99565971>] dump_stack+0x4e/0x7d
[<ffffffff990b168f>] warn_slowpath_common+0x9f/0xe0
[<ffffffff992aba69>] ? __get_user_pages+0x5f9/0x990
[<ffffffff990b18aa>] warn_slowpath_null+0x1a/0x20
[<ffffffff992aba69>] __get_user_pages+0x5f9/0x990
[<ffffffff99015979>] ? native_sched_clock+0x69/0x160
[<ffffffff992ab470>] ? follow_page_mask+0x530/0x530
[<ffffffff992ad54a>] ? __access_remote_vm+0xca/0x340
[<ffffffff992ac2e2>] get_user_pages+0x52/0x60
[<ffffffff992ad610>] __access_remote_vm+0x190/0x340
[<ffffffff990f2531>] ? preempt_count_sub+0xc1/0x120
[<ffffffff992ad480>] ? __might_fault+0xf0/0xf0
[<ffffffff992ad417>] ? __might_fault+0x87/0xf0
[<ffffffff992b607f>] access_remote_vm+0x1f/0x30
[<ffffffff993c5703>] mem_rw.isra.15+0xe3/0x1d0
[<ffffffff993c5833>] mem_write+0x43/0x50
[<ffffffff9930a950>] do_loop_readv_writev+0xe0/0x110
[<ffffffff993c57f0>] ? mem_rw.isra.15+0x1d0/0x1d0
[<ffffffff9930c3bb>] do_readv_writev+0x38b/0x3c0
[<ffffffff99132960>] ? trace_hardirqs_off_caller+0x70/0x110
[<ffffffff993c57f0>] ? mem_rw.isra.15+0x1d0/0x1d0
[<ffffffff9930c030>] ? vfs_write+0x260/0x260
[<ffffffff99595e17>] ? debug_smp_processor_id+0x17/0x20
[<ffffffff990f2531>] ? preempt_count_sub+0xc1/0x120
[<ffffffff991330e5>] ? __lock_is_held+0x25/0xd0
[<ffffffff991381e3>] ? mark_held_locks+0x23/0xc0
[<ffffffff9926080a>] ? context_tracking_exit.part.5+0x2a/0x50
[<ffffffff99138406>] ? trace_hardirqs_on_caller+0x186/0x280
[<ffffffff9913850d>] ? trace_hardirqs_on+0xd/0x10
[<ffffffff9930c4b9>] vfs_writev+0x59/0x70
[<ffffffff9930e2fd>] SyS_pwritev+0x15d/0x180
[<ffffffff9930e1a0>] ? SyS_preadv+0x180/0x180
[<ffffffff99002017>] ? trace_hardirqs_on_thunk+0x17/0x19
[<ffffffff99d19557>] entry_SYSCALL_64_fastpath+0x12/0x6b
---[ end trace 96115a52264cceaf ]---
---[ end trace 96115a52264cceb0 ]---
next reply other threads:[~2016-01-30 17:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-30 17:58 Dave Jones [this message]
2016-01-30 17:58 ` 4.5-rc1: mm/gup.c warning when writing to /proc/self/mem Dave Jones
2016-01-30 19:53 ` Kirill A. Shutemov
2016-01-30 19:53 ` Kirill A. Shutemov
2016-01-31 2:03 ` Hugh Dickins
2016-01-31 2:03 ` Hugh Dickins
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160130175831.GA30571@codemonkey.org.uk \
--to=davej@codemonkey.org.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.