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[209.132.180.67]) by mx.google.com with ESMTP id 93-v6si19069675plf.0.2018.10.09.17.08.26; Tue, 09 Oct 2018 17:08:42 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725955AbeJJH13 (ORCPT + 99 others); Wed, 10 Oct 2018 03:27:29 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:46036 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725766AbeJJH13 (ORCPT ); Wed, 10 Oct 2018 03:27:29 -0400 Received: by mail-io1-f72.google.com with SMTP id g133-v6so2989746ioa.12 for ; Tue, 09 Oct 2018 17:08:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=HvFVs9fTuPkK7ZMhOPGqk4c6xDdzqjfvf+/6zEMe/1o=; b=fpaeBVl4zQK9Rbj2rUWdg/exX/5o1K59ifzl+Z+6Dq2V7SfvhD2Ar77NIXpZLpbD5Z 3NWwSG5f8AqOjbIkaPlnK1WVTFb3V+wXErF5juaH7vnh8kQhwcywKwl2Eoh0alRFQfqB mczC0BKJcUOo8aF/nPGAFZDm0+rolNZ0gZuNCKSgdxyhouU9eTM5Odp5+6642AiXi+8B r6mkCSYV5sMAcBs1Ezpm6lL+j1EUQ79faGxEtv/Df2R3aoluAOlVYSHWlQzc+L3XE9sC Lka5EFecsjm6dDLTQTSFGOfIi4OjtWYBxCjh3jUo4VkGuD1LNHkpHX4KcVGQs7LnNeNi FTMQ== X-Gm-Message-State: ABuFfojGQCGFdzYjF0WPQieSuAsd81CszSwMLvbifuow5yhWkmAG2hBe MtvDGamHqiNq6fRhezIn8alg80S7p6moLM1VAL3GWPoOqqlY MIME-Version: 1.0 X-Received: by 2002:a24:d7:: with SMTP id 206-v6mr3763789ita.17.1539130082995; Tue, 09 Oct 2018 17:08:02 -0700 (PDT) Date: Tue, 09 Oct 2018 17:08:02 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000dc48d40577d4a587@google.com> Subject: INFO: rcu detected stall in shmem_fault From: syzbot To: akpm@linux-foundation.org, guro@fb.com, hannes@cmpxchg.org, kirill.shutemov@linux.intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@kernel.org, penguin-kernel@i-love.sakura.ne.jp, rientjes@google.com, syzkaller-bugs@googlegroups.com, yang.s@alibaba-inc.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 570b7bdeaf18 Add linux-next specific files for 20181009 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=13eeb685400000 kernel config: https://syzkaller.appspot.com/x/.config?x=9b5a60e1381390c4 dashboard link: https://syzkaller.appspot.com/bug?extid=77e6b28a7a7106ad0def compiler: gcc (GCC) 8.0.1 20180413 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+77e6b28a7a7106ad0def@syzkaller.appspotmail.com RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (1 GPs behind) idle=cb6/1/0x4000000000000002 softirq=64368/64369 fqs=750 rcu: (t=10505 jiffies g=81341 q=1698) NMI backtrace for cpu 0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline] rcu_dump_cpu_stacks+0x16f/0x1bc kernel/rcu/tree.c:1195 print_cpu_stall.cold.67+0x1f3/0x3c7 kernel/rcu/tree.c:1334 check_cpu_stall kernel/rcu/tree.c:1408 [inline] rcu_pending kernel/rcu/tree.c:2961 [inline] rcu_check_callbacks+0xf38/0x13f0 kernel/rcu/tree.c:2506 update_process_times+0x2d/0x70 kernel/time/timer.c:1636 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x412/0x10c0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1034 [inline] smp_apic_timer_interrupt+0x1a1/0x750 arch/x86/kernel/apic/apic.c:1059 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline] RIP: 0010:dump_stack+0x358/0x3ab lib/dump_stack.c:118 Code: 74 0c 48 c7 c7 f0 f5 31 89 e8 9f 0e 0e fa 48 83 3d 07 15 7d 01 00 0f 84 63 fe ff ff e8 1c 89 c9 f9 48 8b bd 70 ff ff ff 57 9d <0f> 1f 44 00 00 e8 09 89 c9 f9 48 8b 8d 68 ff ff ff b8 ff ff 37 00 RSP: 0018:ffff88017d3a5c70 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 1ffffffff1263ebe RCX: ffffc90001e5a000 RDX: 0000000000040000 RSI: ffffffff87b4e0f4 RDI: 0000000000000246 RBP: ffff88017d3a5d18 R08: ffff8801d7e02480 R09: fffffbfff13da030 R10: fffffbfff13da030 R11: 0000000000000003 R12: 1ffff1002fa74b96 R13: 00000000ffffffff R14: 0000000000000200 R15: 0000000000000000 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205164kB, limit 204800kB, failcnt 6901 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:660KB dirty:0KB writeback:0KB swap:0KB inactive_anon:708KB active_anon:176448KB inactive_file:4KB active_file:0KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205168kB, limit 204800kB, failcnt 6909 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:660KB dirty:0KB writeback:0KB swap:0KB inactive_anon:712KB active_anon:176448KB inactive_file:0KB active_file:4KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205172kB, limit 204800kB, failcnt 6917 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:792KB dirty:0KB writeback:0KB swap:0KB inactive_anon:716KB active_anon:176448KB inactive_file:4KB active_file:0KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205176kB, limit 204800kB, failcnt 6925 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:792KB dirty:0KB writeback:0KB swap:0KB inactive_anon:720KB active_anon:176448KB inactive_file:0KB active_file:4KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205180kB, limit 204800kB, failcnt 6933 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:792KB dirty:0KB writeback:0KB swap:0KB inactive_anon:724KB active_anon:176448KB inactive_file:4KB active_file:0KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205184kB, limit 204800kB, failcnt 6941 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:792KB dirty:0KB writeback:0KB swap:0KB inactive_anon:728KB active_anon:176448KB inactive_file:0KB active_file:4KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205188kB, limit 204800kB, failcnt 6949 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:792KB dirty:0KB writeback:0KB swap:0KB inactive_anon:732KB active_anon:176448KB inactive_file:4KB active_file:0KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205192kB, limit 204800kB, failcnt 6957 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:792KB dirty:0KB writeback:0KB swap:0KB inactive_anon:736KB active_anon:176448KB inactive_file:0KB active_file:4KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 shmem_fault+0x25f/0x960 mm/shmem.c:1982 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3531 [inline] handle_pte_fault mm/memory.c:3762 [inline] __handle_mm_fault+0x3d40/0x5a40 mm/memory.c:3886 handle_mm_fault+0x54f/0xc70 mm/memory.c:3923 faultin_page mm/gup.c:518 [inline] __get_user_pages+0x806/0x1b30 mm/gup.c:718 populate_vma_page_range+0x2db/0x3d0 mm/gup.c:1222 __mm_populate+0x286/0x4d0 mm/gup.c:1270 mm_populate include/linux/mm.h:2311 [inline] vm_mmap_pgoff+0x27f/0x2c0 mm/util.c:362 ksys_mmap_pgoff+0xf1/0x660 mm/mmap.c:1606 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9315bfbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457579 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000072bf00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f9315bfc6d4 R13: 00000000004c284a R14: 00000000004d3bd0 R15: 00000000ffffffff Memory limit reached of cgroup /syz0 memory: usage 205196kB, limit 204800kB, failcnt 6965 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache:680KB rss:176336KB rss_huge:163840KB shmem:740KB mapped_file:792KB dirty:0KB writeback:0KB swap:0KB inactive_anon:740KB active_anon:176448KB inactive_file:4KB active_file:0KB unevictable:0KB Out of memory and no killable processes... syz-executor0 invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 syz-executor0 cpuset=syz0 mems_allowed=0 CPU: 0 PID: 2050 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181009+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x3ab lib/dump_stack.c:113 dump_header+0x27b/0xf72 mm/oom_kill.c:441 out_of_memory.cold.30+0xf/0x184 mm/oom_kill.c:1109 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1386 mem_cgroup_oom mm/memcontrol.c:1701 [inline] try_charge+0xb7c/0x1710 mm/memcontrol.c:2260 mem_cgroup_try_charge+0x627/0xe20 mm/memcontrol.c:5892 mem_cgroup_try_charge_delay+0x1d/0xa0 mm/memcontrol.c:5907 shmem_getpage_gfp+0x186b/0x4840 mm/shmem.c:1784 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot.