[info] Using makefile-style concurrent boot in runlevel 2.
[   71.135326][   T27] audit: type=1800 audit(1583921169.333:21): pid=8431 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0
[   71.159453][   T27] audit: type=1800 audit(1583921169.333:22): pid=8431 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.1.38' (ECDSA) to the list of known hosts.
2020/03/11 10:06:20 fuzzer started
syzkaller login: [   82.476983][ T8584] check_preemption_disabled: 8 callbacks suppressed
[   82.476995][ T8584] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-fuzzer/8584
[   82.494843][ T8584] caller is __mod_memcg_state+0x27/0x1a0
[   82.501097][ T8584] CPU: 0 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   82.512278][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   82.524113][ T8584] Call Trace:
[   82.528463][ T8584]  dump_stack+0x188/0x20d
[   82.533702][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   82.540356][ T8584]  __mod_memcg_state+0x27/0x1a0
[   82.545833][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   82.551555][ T8584]  ? mark_held_locks+0xe0/0xe0
[   82.557027][ T8584]  ? lock_downgrade+0x7f0/0x7f0
[   82.562532][ T8584]  ? can_split_huge_page+0x480/0x480
[   82.567920][ T8584]  ? pmd_val+0x7c/0xf0
[   82.573497][ T8584]  ? pmd_pfn+0x125/0x1c0
[   82.578182][ T8584]  ? enabled_store+0x190/0x190
[   82.583037][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   82.588413][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   82.594138][ T8584]  ? mem_cgroup_uncharge+0xf0/0xf0
[   82.599338][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   82.606616][ T8584]  __walk_page_range+0xcfb/0x2070
[   82.613919][ T8584]  ? walk_page_test+0x78/0x180
[   82.618769][ T8584]  walk_page_range+0x1bd/0x3a0
[   82.624749][ T8584]  ? __walk_page_range+0x2070/0x2070
[   82.630211][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   82.636289][ T8584]  madvise_free_single_vma+0x384/0x550
[   82.642158][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   82.648149][ T8584]  ? lock_acquire+0x197/0x420
[   82.653112][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   82.658333][ T8584]  ? vmacache_find+0x62/0x300
[   82.663184][ T8584]  ? find_vma+0x2b/0x170
[   82.667698][ T8584]  do_madvise+0x5ba/0x1b80
[   82.672109][ T8584]  ? lock_downgrade+0x7f0/0x7f0
[   82.676966][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   82.682706][ T8584]  ? ktime_get+0x1f8/0x2f0
[   82.687294][ T8584]  ? __x64_sys_futex+0x376/0x4f0
[   82.692405][ T8584]  ? switch_fpu_return+0x1db/0x4b0
[   82.697684][ T8584]  ? fpregs_mark_activate+0x320/0x320
[   82.703053][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   82.708067][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   82.713090][ T8584]  __x64_sys_madvise+0xae/0x120
[   82.717959][ T8584]  do_syscall_64+0xf6/0x7d0
[   82.722459][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   82.728361][ T8584] RIP: 0033:0x460bf7
[   82.732250][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   82.751932][ T8584] RSP: 002b:00007ffc2d6ed530 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   82.760334][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   82.768297][ T8584] RDX: 0000000000000008 RSI: 000000000000a000 RDI: 000000c0002a4000
[   82.776261][ T8584] RBP: 00007ffc2d6ed570 R08: 000000c000200000 R09: 000000c0002ae000
[   82.784233][ T8584] R10: 00007fffffffffff R11: 0000000000000246 R12: 0000000000000002
[   82.792290][ T8584] R13: 00007f83053666d0 R14: 0000000000000004 R15: 000000000000000d
[   82.800423][ T8584] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-fuzzer/8584
[   82.809289][ T8584] caller is __mod_memcg_state+0xca/0x1a0
[   82.815415][ T8584] CPU: 0 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   82.824962][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   82.835102][ T8584] Call Trace:
[   82.838395][ T8584]  dump_stack+0x188/0x20d
[   82.842737][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   82.849671][ T8584]  __mod_memcg_state+0xca/0x1a0
[   82.854520][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   82.860423][ T8584]  ? mark_held_locks+0xe0/0xe0
[   82.865182][ T8584]  ? lock_downgrade+0x7f0/0x7f0
[   82.870029][ T8584]  ? can_split_huge_page+0x480/0x480
[   82.875306][ T8584]  ? pmd_val+0x7c/0xf0
[   82.879369][ T8584]  ? pmd_pfn+0x125/0x1c0
[   82.883694][ T8584]  ? enabled_store+0x190/0x190
[   82.888459][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   82.893755][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   82.899229][ T8584]  ? mem_cgroup_uncharge+0xf0/0xf0
[   82.904339][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   82.911019][ T8584]  __walk_page_range+0xcfb/0x2070
[   82.916064][ T8584]  ? walk_page_test+0x78/0x180
[   82.920840][ T8584]  walk_page_range+0x1bd/0x3a0
[   82.925605][ T8584]  ? __walk_page_range+0x2070/0x2070
[   82.930890][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   82.936524][ T8584]  madvise_free_single_vma+0x384/0x550
[   82.941996][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   82.946936][ T8584]  ? lock_acquire+0x197/0x420
[   82.951618][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   82.956733][ T8584]  ? vmacache_find+0x62/0x300
[   82.961415][ T8584]  ? find_vma+0x2b/0x170
[   82.965663][ T8584]  do_madvise+0x5ba/0x1b80
[   82.970071][ T8584]  ? lock_downgrade+0x7f0/0x7f0
[   82.975449][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   82.981168][ T8584]  ? ktime_get+0x1f8/0x2f0
[   82.985588][ T8584]  ? __x64_sys_futex+0x376/0x4f0
[   82.990535][ T8584]  ? switch_fpu_return+0x1db/0x4b0
[   82.995668][ T8584]  ? fpregs_mark_activate+0x320/0x320
[   83.001051][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   83.006073][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   83.011090][ T8584]  __x64_sys_madvise+0xae/0x120
[   83.015963][ T8584]  do_syscall_64+0xf6/0x7d0
[   83.020473][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   83.026535][ T8584] RIP: 0033:0x460bf7
[   83.030425][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   83.050031][ T8584] RSP: 002b:00007ffc2d6ed530 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   83.058537][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   83.066500][ T8584] RDX: 0000000000000008 RSI: 000000000000a000 RDI: 000000c0002a4000
[   83.074461][ T8584] RBP: 00007ffc2d6ed570 R08: 000000c000200000 R09: 000000c0002ae000
[   83.082428][ T8584] R10: 00007fffffffffff R11: 0000000000000246 R12: 0000000000000002
[   83.090387][ T8584] R13: 00007f83053666d0 R14: 0000000000000004 R15: 000000000000000d
[   83.098579][ T8584] BUG: using __this_cpu_write() in preemptible [00000000] code: syz-fuzzer/8584
[   83.108334][ T8584] caller is __mod_memcg_state+0x87/0x1a0
[   83.114009][ T8584] CPU: 0 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   83.123450][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   83.133493][ T8584] Call Trace:
[   83.136782][ T8584]  dump_stack+0x188/0x20d
[   83.141116][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   83.146920][ T8584]  __mod_memcg_state+0x87/0x1a0
[   83.151794][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   83.157683][ T8584]  ? mark_held_locks+0xe0/0xe0
[   83.162446][ T8584]  ? lock_downgrade+0x7f0/0x7f0
[   83.168167][ T8584]  ? can_split_huge_page+0x480/0x480
[   83.173443][ T8584]  ? pmd_val+0x7c/0xf0
[   83.177690][ T8584]  ? pmd_pfn+0x125/0x1c0
[   83.181923][ T8584]  ? enabled_store+0x190/0x190
[   83.186688][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   83.191973][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   83.197471][ T8584]  ? mem_cgroup_uncharge+0xf0/0xf0
[   83.202675][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   83.209370][ T8584]  __walk_page_range+0xcfb/0x2070
[   83.214423][ T8584]  ? walk_page_test+0x78/0x180
[   83.219195][ T8584]  walk_page_range+0x1bd/0x3a0
[   83.223965][ T8584]  ? __walk_page_range+0x2070/0x2070
[   83.229254][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   83.235505][ T8584]  madvise_free_single_vma+0x384/0x550
[   83.241659][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   83.248156][ T8584]  ? lock_acquire+0x197/0x420
[   83.253191][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   83.258308][ T8584]  ? vmacache_find+0x62/0x300
[   83.262985][ T8584]  ? find_vma+0x2b/0x170
[   83.267230][ T8584]  do_madvise+0x5ba/0x1b80
[   83.271820][ T8584]  ? lock_downgrade+0x7f0/0x7f0
[   83.276679][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   83.282393][ T8584]  ? ktime_get+0x1f8/0x2f0
[   83.286811][ T8584]  ? __x64_sys_futex+0x376/0x4f0
[   83.291771][ T8584]  ? switch_fpu_return+0x1db/0x4b0
[   83.296890][ T8584]  ? fpregs_mark_activate+0x320/0x320
[   83.302263][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   83.307276][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   83.312303][ T8584]  __x64_sys_madvise+0xae/0x120
[   83.317157][ T8584]  do_syscall_64+0xf6/0x7d0
[   83.321663][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   83.327552][ T8584] RIP: 0033:0x460bf7
[   83.331441][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   83.351122][ T8584] RSP: 002b:00007ffc2d6ed530 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   83.359538][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   83.367516][ T8584] RDX: 0000000000000008 RSI: 000000000000a000 RDI: 000000c0002a4000
[   83.375485][ T8584] RBP: 00007ffc2d6ed570 R08: 000000c000200000 R09: 000000c0002ae000
[   83.383460][ T8584] R10: 00007fffffffffff R11: 0000000000000246 R12: 0000000000000002
[   83.391431][ T8584] R13: 00007f83053666d0 R14: 0000000000000004 R15: 000000000000000d
[   83.406870][ T8584] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-fuzzer/8584
[   83.415988][ T8584] caller is __mod_memcg_state+0x27/0x1a0
[   83.421646][ T8584] CPU: 1 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   83.431085][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   83.441129][ T8584] Call Trace:
[   83.444420][ T8584]  dump_stack+0x188/0x20d
[   83.448751][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   83.454555][ T8584]  __mod_memcg_state+0x27/0x1a0
[   83.459499][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   83.465137][ T8584]  ? mark_held_locks+0xe0/0xe0
[   83.469901][ T8584]  ? can_split_huge_page+0x480/0x480
[   83.475179][ T8584]  ? pmd_val+0x7c/0xf0
[   83.479420][ T8584]  ? pmd_pfn+0x125/0x1c0
[   83.483674][ T8584]  ? enabled_store+0x190/0x190
[   83.488456][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   83.493761][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   83.499242][ T8584]  ? kmem_cache_free+0x7f/0x320
[   83.504101][ T8584]  ? do_madvise+0xbb3/0x1b80
[   83.508966][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   83.513990][ T8584]  ? mem_cgroup_uncharge+0xf0/0xf0
[   83.519096][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   83.525769][ T8584]  __walk_page_range+0xcfb/0x2070
[   83.530805][ T8584]  ? walk_page_test+0x78/0x180
[   83.535566][ T8584]  walk_page_range+0x1bd/0x3a0
[   83.548920][ T8584]  ? __walk_page_range+0x2070/0x2070
[   83.554205][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   83.559836][ T8584]  madvise_free_single_vma+0x384/0x550
[   83.565314][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   83.570250][ T8584]  ? lock_acquire+0x197/0x420
[   83.574923][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   83.580032][ T8584]  ? vmacache_find+0x62/0x300
[   83.584704][ T8584]  ? vmacache_update+0xce/0x140
[   83.589545][ T8584]  ? find_vma+0x2b/0x170
[   83.593786][ T8584]  do_madvise+0x5ba/0x1b80
[   83.598213][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   83.603926][ T8584]  ? up_read+0x1a8/0x750
[   83.608173][ T8584]  ? handle_mm_fault+0x29e/0x660
[   83.613110][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   83.618126][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   83.623145][ T8584]  __x64_sys_madvise+0xae/0x120
[   83.627992][ T8584]  do_syscall_64+0xf6/0x7d0
[   83.632499][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   83.638383][ T8584] RIP: 0033:0x460bf7
[   83.642269][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   83.661865][ T8584] RSP: 002b:00007ffc2d6ed530 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   83.670877][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   83.678839][ T8584] RDX: 0000000000000008 RSI: 0000000000074000 RDI: 000000c000168000
[   83.686805][ T8584] RBP: 00007ffc2d6ed570 R08: 000000c000000000 R09: 000000c0001dc000
[   83.694853][ T8584] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000003
[   83.702816][ T8584] R13: 0000000000000000 R14: 0000000000ac7968 R15: 0000000000000000
[   83.710862][ T8584] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-fuzzer/8584
[   83.719980][ T8584] caller is __mod_memcg_state+0xca/0x1a0
[   83.725607][ T8584] CPU: 1 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   83.735046][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   83.745176][ T8584] Call Trace:
[   83.748460][ T8584]  dump_stack+0x188/0x20d
[   83.752793][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   83.758766][ T8584]  __mod_memcg_state+0xca/0x1a0
[   83.763628][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   83.769259][ T8584]  ? mark_held_locks+0xe0/0xe0
[   83.774027][ T8584]  ? can_split_huge_page+0x480/0x480
[   83.781750][ T8584]  ? pmd_val+0x7c/0xf0
[   83.785827][ T8584]  ? pmd_pfn+0x125/0x1c0
[   83.790077][ T8584]  ? enabled_store+0x190/0x190
[   83.794860][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   83.800159][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   83.805627][ T8584]  ? kmem_cache_free+0x7f/0x320
[   83.810478][ T8584]  ? do_madvise+0xbb3/0x1b80
[   83.815067][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   83.820097][ T8584]  ? mem_cgroup_uncharge+0xf0/0xf0
[   83.825232][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   83.831913][ T8584]  __walk_page_range+0xcfb/0x2070
[   83.836949][ T8584]  ? walk_page_test+0x78/0x180
[   83.841713][ T8584]  walk_page_range+0x1bd/0x3a0
[   83.846475][ T8584]  ? __walk_page_range+0x2070/0x2070
[   83.851847][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   83.857493][ T8584]  madvise_free_single_vma+0x384/0x550
[   83.862954][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   83.868065][ T8584]  ? lock_acquire+0x197/0x420
[   83.872736][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   83.877867][ T8584]  ? vmacache_find+0x62/0x300
[   83.882538][ T8584]  ? vmacache_update+0xce/0x140
[   83.887405][ T8584]  ? find_vma+0x2b/0x170
[   83.891650][ T8584]  do_madvise+0x5ba/0x1b80
[   83.896087][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   83.901890][ T8584]  ? up_read+0x1a8/0x750
[   83.906143][ T8584]  ? handle_mm_fault+0x29e/0x660
[   83.911168][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   83.916183][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   83.921202][ T8584]  __x64_sys_madvise+0xae/0x120
[   83.926055][ T8584]  do_syscall_64+0xf6/0x7d0
[   83.930565][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   83.936492][ T8584] RIP: 0033:0x460bf7
[   83.940386][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   83.959983][ T8584] RSP: 002b:00007ffc2d6ed530 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   83.968391][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   83.976358][ T8584] RDX: 0000000000000008 RSI: 0000000000074000 RDI: 000000c000168000
[   83.984322][ T8584] RBP: 00007ffc2d6ed570 R08: 000000c000000000 R09: 000000c0001dc000
[   83.992283][ T8584] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000003
[   84.000244][ T8584] R13: 0000000000000000 R14: 0000000000ac7968 R15: 0000000000000000
[   84.008290][ T8584] BUG: using __this_cpu_write() in preemptible [00000000] code: syz-fuzzer/8584
[   84.019184][ T8584] caller is __mod_memcg_state+0x87/0x1a0
[   84.025020][ T8584] CPU: 1 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   84.034463][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   84.044509][ T8584] Call Trace:
[   84.047797][ T8584]  dump_stack+0x188/0x20d
[   84.052125][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   84.057925][ T8584]  __mod_memcg_state+0x87/0x1a0
[   84.062778][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   84.068438][ T8584]  ? mark_held_locks+0xe0/0xe0
[   84.073314][ T8584]  ? can_split_huge_page+0x480/0x480
[   84.078615][ T8584]  ? pmd_val+0x7c/0xf0
[   84.082698][ T8584]  ? pmd_pfn+0x125/0x1c0
[   84.086938][ T8584]  ? enabled_store+0x190/0x190
[   84.091719][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   84.097009][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   84.102465][ T8584]  ? kmem_cache_free+0x7f/0x320
[   84.107309][ T8584]  ? do_madvise+0xbb3/0x1b80
[   84.111893][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   84.116917][ T8584]  ? mem_cgroup_uncharge+0xf0/0xf0
[   84.122056][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   84.128728][ T8584]  __walk_page_range+0xcfb/0x2070
[   84.133761][ T8584]  ? walk_page_test+0x78/0x180
[   84.138523][ T8584]  walk_page_range+0x1bd/0x3a0
[   84.143298][ T8584]  ? __walk_page_range+0x2070/0x2070
[   84.148597][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   84.154228][ T8584]  madvise_free_single_vma+0x384/0x550
[   84.159682][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   84.164636][ T8584]  ? lock_acquire+0x197/0x420
[   84.169492][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   84.174602][ T8584]  ? vmacache_find+0x62/0x300
[   84.179278][ T8584]  ? vmacache_update+0xce/0x140
[   84.184121][ T8584]  ? find_vma+0x2b/0x170
[   84.188359][ T8584]  do_madvise+0x5ba/0x1b80
[   84.192785][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   84.198664][ T8584]  ? up_read+0x1a8/0x750
[   84.202923][ T8584]  ? handle_mm_fault+0x29e/0x660
[   84.207869][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   84.212892][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   84.217907][ T8584]  __x64_sys_madvise+0xae/0x120
[   84.222759][ T8584]  do_syscall_64+0xf6/0x7d0
[   84.227261][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   84.234533][ T8584] RIP: 0033:0x460bf7
[   84.238421][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   84.258020][ T8584] RSP: 002b:00007ffc2d6ed530 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   84.266512][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   84.274996][ T8584] RDX: 0000000000000008 RSI: 0000000000074000 RDI: 000000c000168000
[   84.282961][ T8584] RBP: 00007ffc2d6ed570 R08: 000000c000000000 R09: 000000c0001dc000
[   84.290921][ T8584] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000003
[   84.298900][ T8584] R13: 0000000000000000 R14: 0000000000ac7968 R15: 0000000000000000
[   84.346362][ T8588] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-fuzzer/8588
[   84.355786][ T8588] caller is __mod_memcg_state+0x27/0x1a0
[   84.361441][ T8588] CPU: 0 PID: 8588 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   84.370881][ T8588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   84.380910][ T8588] Call Trace:
[   84.384209][ T8588]  dump_stack+0x188/0x20d
[   84.388532][ T8588]  __this_cpu_preempt_check.cold+0x84/0x90
[   84.394336][ T8588]  __mod_memcg_state+0x27/0x1a0
[   84.399167][ T8588]  split_huge_page_to_list+0x124b/0x3380
[   84.404781][ T8588]  ? mark_held_locks+0xe0/0xe0
[   84.409535][ T8588]  ? lock_acquire+0x197/0x420
[   84.414220][ T8588]  ? mark_held_locks+0xe0/0xe0
[   84.418963][ T8588]  ? can_split_huge_page+0x480/0x480
[   84.424366][ T8588]  ? pmd_val+0x7c/0xf0
[   84.428409][ T8588]  ? pmd_pfn+0x125/0x1c0
[   84.432625][ T8588]  ? enabled_store+0x190/0x190
[   84.437418][ T8588]  madvise_free_huge_pmd+0x873/0xb90
[   84.442698][ T8588]  madvise_free_pte_range+0x6ff/0x2650
[   84.448310][ T8588]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   84.454991][ T8588]  __walk_page_range+0xcfb/0x2070
[   84.460029][ T8588]  ? walk_page_test+0x78/0x180
[   84.464832][ T8588]  walk_page_range+0x1bd/0x3a0
[   84.469577][ T8588]  ? __walk_page_range+0x2070/0x2070
[   84.474845][ T8588]  ? madvise_free_single_vma+0x2c1/0x550
[   84.480458][ T8588]  madvise_free_single_vma+0x384/0x550
[   84.485896][ T8588]  ? madvise_pageout+0x3b0/0x3b0
[   84.490901][ T8588]  ? lock_acquire+0x197/0x420
[   84.495559][ T8588]  ? userfaultfd_remove+0xf0/0x2b0
[   84.500662][ T8588]  ? vmacache_find+0x62/0x300
[   84.505322][ T8588]  ? find_vma+0x2b/0x170
[   84.509543][ T8588]  do_madvise+0x5ba/0x1b80
[   84.513952][ T8588]  ? madvise_free_pte_range+0x2650/0x2650
[   84.519649][ T8588]  ? __x64_sys_futex+0x376/0x4f0
[   84.524606][ T8588]  ? switch_fpu_return+0x1db/0x4b0
[   84.529691][ T8588]  ? fpregs_mark_activate+0x320/0x320
[   84.535066][ T8588]  ? __x64_sys_madvise+0xae/0x120
[   84.540064][ T8588]  ? trace_hardirqs_on+0x55/0x220
[   84.545086][ T8588]  __x64_sys_madvise+0xae/0x120
[   84.549925][ T8588]  do_syscall_64+0xf6/0x7d0
[   84.554410][ T8588]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   84.560278][ T8588] RIP: 0033:0x460bf7
[   84.564149][ T8588] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   84.583728][ T8588] RSP: 002b:000000c00004fe70 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   84.592112][ T8588] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   84.600070][ T8588] RDX: 0000000000000008 RSI: 0000000000032000 RDI: 000000c000400000
[   84.608072][ T8588] RBP: 000000c00004feb0 R08: 0000000000000000 R09: 000000c000432000
[   84.616051][ T8588] R10: 00007fffffffffff R11: 0000000000000246 R12: 0000000000000002
[   84.624809][ T8588] R13: 00007f8305366008 R14: 0000000000000004 R15: 000000000000000d
[   84.632875][ T8588] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-fuzzer/8588
[   84.641756][ T8588] caller is __mod_memcg_state+0xca/0x1a0
[   84.647495][ T8588] CPU: 0 PID: 8588 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   84.656922][ T8588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   84.666965][ T8588] Call Trace:
[   84.670265][ T8588]  dump_stack+0x188/0x20d
[   84.674579][ T8588]  __this_cpu_preempt_check.cold+0x84/0x90
[   84.680364][ T8588]  __mod_memcg_state+0xca/0x1a0
[   84.685196][ T8588]  split_huge_page_to_list+0x124b/0x3380
[   84.690827][ T8588]  ? mark_held_locks+0xe0/0xe0
[   84.695576][ T8588]  ? lock_acquire+0x197/0x420
[   84.700242][ T8588]  ? mark_held_locks+0xe0/0xe0
[   84.704987][ T8588]  ? can_split_huge_page+0x480/0x480
[   84.710279][ T8588]  ? pmd_val+0x7c/0xf0
[   84.714325][ T8588]  ? pmd_pfn+0x125/0x1c0
[   84.718556][ T8588]  ? enabled_store+0x190/0x190
[   84.723300][ T8588]  madvise_free_huge_pmd+0x873/0xb90
[   84.728575][ T8588]  madvise_free_pte_range+0x6ff/0x2650
[   84.734015][ T8588]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   84.740678][ T8588]  __walk_page_range+0xcfb/0x2070
[   84.746424][ T8588]  ? walk_page_test+0x78/0x180
[   84.751172][ T8588]  walk_page_range+0x1bd/0x3a0
[   84.755914][ T8588]  ? __walk_page_range+0x2070/0x2070
[   84.761178][ T8588]  ? madvise_free_single_vma+0x2c1/0x550
[   84.766791][ T8588]  madvise_free_single_vma+0x384/0x550
[   84.772227][ T8588]  ? madvise_pageout+0x3b0/0x3b0
[   84.777154][ T8588]  ? lock_acquire+0x197/0x420
[   84.781828][ T8588]  ? userfaultfd_remove+0xf0/0x2b0
[   84.786932][ T8588]  ? vmacache_find+0x62/0x300
[   84.791592][ T8588]  ? find_vma+0x2b/0x170
[   84.795812][ T8588]  do_madvise+0x5ba/0x1b80
[   84.800220][ T8588]  ? madvise_free_pte_range+0x2650/0x2650
[   84.805919][ T8588]  ? __x64_sys_futex+0x376/0x4f0
[   84.810876][ T8588]  ? switch_fpu_return+0x1db/0x4b0
[   84.815974][ T8588]  ? fpregs_mark_activate+0x320/0x320
[   84.821333][ T8588]  ? __x64_sys_madvise+0xae/0x120
[   84.826344][ T8588]  ? trace_hardirqs_on+0x55/0x220
[   84.831367][ T8588]  __x64_sys_madvise+0xae/0x120
[   84.836200][ T8588]  do_syscall_64+0xf6/0x7d0
[   84.840680][ T8588]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   84.847414][ T8588] RIP: 0033:0x460bf7
[   84.851286][ T8588] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   84.870978][ T8588] RSP: 002b:000000c00004fe70 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   84.879430][ T8588] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   84.887398][ T8588] RDX: 0000000000000008 RSI: 0000000000032000 RDI: 000000c000400000
[   84.895360][ T8588] RBP: 000000c00004feb0 R08: 0000000000000000 R09: 000000c000432000
[   84.903317][ T8588] R10: 00007fffffffffff R11: 0000000000000246 R12: 0000000000000002
[   84.911684][ T8588] R13: 00007f8305366008 R14: 0000000000000004 R15: 000000000000000d
[   84.919741][ T8588] BUG: using __this_cpu_write() in preemptible [00000000] code: syz-fuzzer/8588
[   84.928791][ T8588] caller is __mod_memcg_state+0x87/0x1a0
[   84.934476][ T8588] CPU: 0 PID: 8588 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   84.943927][ T8588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   84.953987][ T8588] Call Trace:
[   84.957262][ T8588]  dump_stack+0x188/0x20d
[   84.961577][ T8588]  __this_cpu_preempt_check.cold+0x84/0x90
[   84.967359][ T8588]  __mod_memcg_state+0x87/0x1a0
[   84.972289][ T8588]  split_huge_page_to_list+0x124b/0x3380
[   84.977923][ T8588]  ? mark_held_locks+0xe0/0xe0
[   84.982660][ T8588]  ? lock_acquire+0x197/0x420
[   84.987311][ T8588]  ? mark_held_locks+0xe0/0xe0
[   84.992139][ T8588]  ? can_split_huge_page+0x480/0x480
[   84.997399][ T8588]  ? pmd_val+0x7c/0xf0
[   85.001442][ T8588]  ? pmd_pfn+0x125/0x1c0
[   85.005669][ T8588]  ? enabled_store+0x190/0x190
[   85.010410][ T8588]  madvise_free_huge_pmd+0x873/0xb90
[   85.015685][ T8588]  madvise_free_pte_range+0x6ff/0x2650
[   85.021124][ T8588]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   85.027772][ T8588]  __walk_page_range+0xcfb/0x2070
[   85.032789][ T8588]  ? walk_page_test+0x78/0x180
[   85.037530][ T8588]  walk_page_range+0x1bd/0x3a0
[   85.042266][ T8588]  ? __walk_page_range+0x2070/0x2070
[   85.047540][ T8588]  ? madvise_free_single_vma+0x2c1/0x550
[   85.053154][ T8588]  madvise_free_single_vma+0x384/0x550
[   85.058588][ T8588]  ? madvise_pageout+0x3b0/0x3b0
[   85.063513][ T8588]  ? lock_acquire+0x197/0x420
[   85.068165][ T8588]  ? userfaultfd_remove+0xf0/0x2b0
[   85.073602][ T8588]  ? vmacache_find+0x62/0x300
[   85.078255][ T8588]  ? find_vma+0x2b/0x170
[   85.082474][ T8588]  do_madvise+0x5ba/0x1b80
[   85.086873][ T8588]  ? madvise_free_pte_range+0x2650/0x2650
[   85.092590][ T8588]  ? __x64_sys_futex+0x376/0x4f0
[   85.097507][ T8588]  ? switch_fpu_return+0x1db/0x4b0
[   85.102605][ T8588]  ? fpregs_mark_activate+0x320/0x320
[   85.107955][ T8588]  ? __x64_sys_madvise+0xae/0x120
[   85.112953][ T8588]  ? trace_hardirqs_on+0x55/0x220
[   85.117951][ T8588]  __x64_sys_madvise+0xae/0x120
[   85.122796][ T8588]  do_syscall_64+0xf6/0x7d0
[   85.127290][ T8588]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   85.133273][ T8588] RIP: 0033:0x460bf7
[   85.137165][ T8588] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   85.156752][ T8588] RSP: 002b:000000c00004fe70 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   85.165143][ T8588] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   85.173177][ T8588] RDX: 0000000000000008 RSI: 0000000000032000 RDI: 000000c000400000
[   85.181140][ T8588] RBP: 000000c00004feb0 R08: 0000000000000000 R09: 000000c000432000
[   85.189085][ T8588] R10: 00007fffffffffff R11: 0000000000000246 R12: 0000000000000002
[   85.197031][ T8588] R13: 00007f8305366008 R14: 0000000000000004 R15: 000000000000000d
2020/03/11 10:06:25 connecting to host at 10.128.0.26:38383
2020/03/11 10:06:25 checking machine...
2020/03/11 10:06:25 checking revisions...
2020/03/11 10:06:25 testing simple program...
[   86.986715][ T8603] IPVS: ftp: loaded support on port[0] = 21
2020/03/11 10:06:25 building call list...
[   87.370030][   T21] tipc: TX() has been purged, node left!
[   87.887609][ T8584] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-fuzzer/8584
[   87.896626][ T8584] caller is __mod_memcg_state+0x27/0x1a0
[   87.902284][ T8584] CPU: 0 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   87.911866][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   87.922022][ T8584] Call Trace:
[   87.925341][ T8584]  dump_stack+0x188/0x20d
[   87.929676][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   87.935673][ T8584]  __mod_memcg_state+0x27/0x1a0
[   87.940524][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   87.946378][ T8584]  ? mark_held_locks+0xe0/0xe0
[   87.951136][ T8584]  ? release_pages+0x656/0x19b0
[   87.956032][ T8584]  ? can_split_huge_page+0x480/0x480
[   87.961457][ T8584]  ? pmd_val+0x7c/0xf0
[   87.965658][ T8584]  ? pmd_pfn+0x125/0x1c0
[   87.969886][ T8584]  ? enabled_store+0x190/0x190
[   87.974640][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   87.979961][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   87.985419][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   87.992200][ T8584]  __walk_page_range+0xcfb/0x2070
[   87.997224][ T8584]  ? walk_page_test+0x78/0x180
[   88.002092][ T8584]  walk_page_range+0x1bd/0x3a0
[   88.006876][ T8584]  ? __walk_page_range+0x2070/0x2070
[   88.012158][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   88.018159][ T8584]  madvise_free_single_vma+0x384/0x550
[   88.023611][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   88.028801][ T8584]  ? lock_acquire+0x197/0x420
[   88.033511][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   88.038816][ T8584]  ? vmacache_find+0x62/0x300
[   88.043483][ T8584]  ? vmacache_update+0xce/0x140
[   88.048617][ T8584]  ? find_vma+0x2b/0x170
[   88.052883][ T8584]  do_madvise+0x5ba/0x1b80
[   88.057292][ T8584]  ? unuse_pde+0x2c/0x80
[   88.061529][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   88.067264][ T8584]  ? __x64_sys_futex+0x376/0x4f0
[   88.072197][ T8584]  ? fput_many+0x2f/0x1a0
[   88.077493][ T8584]  ? do_futex+0x1b10/0x1b10
[   88.082748][ T8584]  ? ksys_read+0x19f/0x250
[   88.087761][ T8584]  ? kernel_write+0x120/0x120
[   88.092926][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   88.098827][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   88.104120][ T8584]  __x64_sys_madvise+0xae/0x120
[   88.109666][ T8584]  do_syscall_64+0xf6/0x7d0
[   88.114203][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   88.120214][ T8584] RIP: 0033:0x460bf7
[   88.124360][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   88.146423][ T8584] RSP: 002b:00007ffc2d6ed310 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   88.155120][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   88.163741][ T8584] RDX: 0000000000000008 RSI: 0000000000200000 RDI: 000000c000552000
[   88.173035][ T8584] RBP: 00007ffc2d6ed350 R08: 000000c000400000 R09: 000000c000752000
[   88.182509][ T8584] R10: 00000000007ffe00 R11: 0000000000000246 R12: 0000000000000002
[   88.190818][ T8584] R13: 0000000000e8da20 R14: 000000000045ecf0 R15: 0000000000000000
[   88.200326][ T8584] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-fuzzer/8584
[   88.210623][ T8584] caller is __mod_memcg_state+0xca/0x1a0
[   88.216576][ T8584] CPU: 0 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   88.227661][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   88.244248][ T8584] Call Trace:
[   88.248404][ T8584]  dump_stack+0x188/0x20d
[   88.253525][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   88.259812][ T8584]  __mod_memcg_state+0xca/0x1a0
[   88.265603][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   88.272753][ T8584]  ? mark_held_locks+0xe0/0xe0
[   88.293159][ T8584]  ? release_pages+0x656/0x19b0
[   88.298437][ T8584]  ? can_split_huge_page+0x480/0x480
[   88.304656][ T8584]  ? pmd_val+0x7c/0xf0
[   88.309306][ T8584]  ? pmd_pfn+0x125/0x1c0
[   88.314284][ T8584]  ? enabled_store+0x190/0x190
[   88.319421][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   88.325522][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   88.331763][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   88.339299][ T8584]  __walk_page_range+0xcfb/0x2070
[   88.345271][ T8584]  ? walk_page_test+0x78/0x180
[   88.350658][ T8584]  walk_page_range+0x1bd/0x3a0
[   88.355702][ T8584]  ? __walk_page_range+0x2070/0x2070
[   88.362401][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   88.368194][ T8584]  madvise_free_single_vma+0x384/0x550
[   88.374466][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   88.379714][ T8584]  ? lock_acquire+0x197/0x420
[   88.385267][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   88.390458][ T8584]  ? vmacache_find+0x62/0x300
[   88.395274][ T8584]  ? vmacache_update+0xce/0x140
[   88.400564][ T8584]  ? find_vma+0x2b/0x170
[   88.404994][ T8584]  do_madvise+0x5ba/0x1b80
[   88.410856][ T8584]  ? unuse_pde+0x2c/0x80
[   88.415270][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   88.421707][ T8584]  ? __x64_sys_futex+0x376/0x4f0
[   88.426906][ T8584]  ? fput_many+0x2f/0x1a0
[   88.432042][ T8584]  ? do_futex+0x1b10/0x1b10
[   88.436707][ T8584]  ? ksys_read+0x19f/0x250
[   88.441198][ T8584]  ? kernel_write+0x120/0x120
[   88.446546][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   88.452427][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   88.458809][ T8584]  __x64_sys_madvise+0xae/0x120
[   88.464252][ T8584]  do_syscall_64+0xf6/0x7d0
[   88.469531][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   88.475463][ T8584] RIP: 0033:0x460bf7
[   88.479462][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   88.500103][ T8584] RSP: 002b:00007ffc2d6ed310 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   88.510786][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   88.519009][ T8584] RDX: 0000000000000008 RSI: 0000000000200000 RDI: 000000c000552000
[   88.527946][ T8584] RBP: 00007ffc2d6ed350 R08: 000000c000400000 R09: 000000c000752000
[   88.541164][ T8584] R10: 00000000007ffe00 R11: 0000000000000246 R12: 0000000000000002
[   88.550777][ T8584] R13: 0000000000e8da20 R14: 000000000045ecf0 R15: 0000000000000000
[   88.560132][ T8584] BUG: using __this_cpu_write() in preemptible [00000000] code: syz-fuzzer/8584
[   88.571240][ T8584] caller is __mod_memcg_state+0x87/0x1a0
[   88.577069][ T8584] CPU: 0 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   88.588374][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   88.599141][ T8584] Call Trace:
[   88.602997][ T8584]  dump_stack+0x188/0x20d
[   88.609434][ T8584]  __this_cpu_preempt_check.cold+0x84/0x90
[   88.615470][ T8584]  __mod_memcg_state+0x87/0x1a0
[   88.620409][ T8584]  split_huge_page_to_list+0x124b/0x3380
[   88.630096][ T8584]  ? mark_held_locks+0xe0/0xe0
[   88.635070][ T8584]  ? release_pages+0x656/0x19b0
[   88.639971][ T8584]  ? can_split_huge_page+0x480/0x480
[   88.645970][ T8584]  ? pmd_val+0x7c/0xf0
[   88.650038][ T8584]  ? pmd_pfn+0x125/0x1c0
[   88.654601][ T8584]  ? enabled_store+0x190/0x190
[   88.659826][ T8584]  madvise_free_huge_pmd+0x873/0xb90
[   88.665723][ T8584]  madvise_free_pte_range+0x6ff/0x2650
[   88.672158][ T8584]  ? madvise_cold_or_pageout_pte_range+0x3400/0x3400
[   88.680118][ T8584]  __walk_page_range+0xcfb/0x2070
[   88.685151][ T8584]  ? walk_page_test+0x78/0x180
[   88.689909][ T8584]  walk_page_range+0x1bd/0x3a0
[   88.694969][ T8584]  ? __walk_page_range+0x2070/0x2070
[   88.700363][ T8584]  ? madvise_free_single_vma+0x2c1/0x550
[   88.706335][ T8584]  madvise_free_single_vma+0x384/0x550
[   88.712059][ T8584]  ? madvise_pageout+0x3b0/0x3b0
[   88.717749][ T8584]  ? lock_acquire+0x197/0x420
[   88.722831][ T8584]  ? userfaultfd_remove+0xf0/0x2b0
[   88.727940][ T8584]  ? vmacache_find+0x62/0x300
[   88.732851][ T8584]  ? vmacache_update+0xce/0x140
[   88.737994][ T8584]  ? find_vma+0x2b/0x170
[   88.742667][ T8584]  do_madvise+0x5ba/0x1b80
[   88.747785][ T8584]  ? unuse_pde+0x2c/0x80
[   88.752532][ T8584]  ? madvise_free_pte_range+0x2650/0x2650
[   88.758653][ T8584]  ? __x64_sys_futex+0x376/0x4f0
[   88.764266][ T8584]  ? fput_many+0x2f/0x1a0
[   88.769446][ T8584]  ? do_futex+0x1b10/0x1b10
[   88.774276][ T8584]  ? ksys_read+0x19f/0x250
[   88.778977][ T8584]  ? kernel_write+0x120/0x120
[   88.783828][ T8584]  ? __x64_sys_madvise+0xae/0x120
[   88.789243][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   88.794870][ T8584]  __x64_sys_madvise+0xae/0x120
[   88.800626][ T8584]  do_syscall_64+0xf6/0x7d0
[   88.805420][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   88.811420][ T8584] RIP: 0033:0x460bf7
[   88.815590][ T8584] Code: 8b 24 24 48 8b 6c 24 10 48 83 c4 18 c3 cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 48 c7 c0 1c 00 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14
[   88.837989][ T8584] RSP: 002b:00007ffc2d6ed310 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[   88.847447][ T8584] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000460bf7
[   88.855984][ T8584] RDX: 0000000000000008 RSI: 0000000000200000 RDI: 000000c000552000
[   88.865226][ T8584] RBP: 00007ffc2d6ed350 R08: 000000c000400000 R09: 000000c000752000
[   88.875049][ T8584] R10: 00000000007ffe00 R11: 0000000000000246 R12: 0000000000000002
[   88.885253][ T8584] R13: 0000000000e8da20 R14: 000000000045ecf0 R15: 0000000000000000
[   89.253802][ T8584] ------------[ cut here ]------------
[   89.262114][ T8584] WARNING: CPU: 0 PID: 8584 at sound/core/oss/pcm_plugin.c:126 snd_pcm_plug_alloc+0x29a/0x330
[   89.273667][ T8584] Kernel panic - not syncing: panic_on_warn set ...
[   89.280870][ T8584] CPU: 0 PID: 8584 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200311-syzkaller #0
[   89.290859][ T8584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   89.306168][ T8584] Call Trace:
[   89.311073][ T8584]  dump_stack+0x188/0x20d
[   89.316304][ T8584]  ? snd_pcm_plug_alloc+0x250/0x330
[   89.324173][ T8584]  panic+0x2e3/0x75c
[   89.331662][ T8584]  ? add_taint.cold+0x16/0x16
[   89.337918][ T8584]  ? printk+0xba/0xed
[   89.341974][ T8584]  ? kmsg_dump_rewind_nolock+0xd9/0xd9
[   89.348245][ T8584]  ? __warn.cold+0x14/0x35
[   89.354588][ T8584]  ? __warn+0xd5/0x1c8
[   89.358864][ T8584]  ? snd_pcm_plug_alloc+0x29a/0x330
[   89.364346][ T8584]  __warn.cold+0x2f/0x35
[   89.369220][ T8584]  ? snd_pcm_plug_alloc+0x29a/0x330
[   89.376507][ T8584]  report_bug+0x27b/0x2f0
[   89.381343][ T8584]  do_error_trap+0x12b/0x220
[   89.387260][ T8584]  ? snd_pcm_plug_alloc+0x29a/0x330
[   89.392795][ T8584]  do_invalid_op+0x32/0x40
[   89.397495][ T8584]  ? snd_pcm_plug_alloc+0x29a/0x330
[   89.406973][ T8584]  invalid_op+0x23/0x30
[   89.411660][ T8584] RIP: 0010:snd_pcm_plug_alloc+0x29a/0x330
[   89.418247][ T8584] Code: ff ff 45 31 e4 e8 46 f2 7f fb 44 89 e0 5b 5d 41 5c 41 5d 41 5e c3 e8 35 f2 7f fb 0f 0b 41 bc fa ff ff ff eb e0 e8 26 f2 7f fb <0f> 0b 41 bc fa ff ff ff eb d1 e8 17 f2 7f fb 0f 0b 41 bc fa ff ff
[   89.439199][ T8584] RSP: 0018:ffffc9000214fb88 EFLAGS: 00010293
[   89.446517][ T8584] RAX: ffff88809d99e580 RBX: ffff8880a7c11500 RCX: ffffffff85f2d2c6
[   89.455494][ T8584] RDX: 0000000000000000 RSI: ffffffff85f2d44a RDI: 0000000000000007
[   89.464151][ T8584] RBP: 0000000000000000 R08: ffff88809d99e580 R09: ffffed1042aeff1f
[   89.475789][ T8584] R10: ffff88821577f8f3 R11: ffffed1042aeff1e R12: ffff8880a7c11558
[   89.488194][ T8584] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88821577f800
[   89.497246][ T8584]  ? snd_pcm_plug_alloc+0x116/0x330
[   89.503464][ T8584]  ? snd_pcm_plug_alloc+0x29a/0x330
[   89.511463][ T8584]  ? snd_pcm_plug_alloc+0x29a/0x330
[   89.517996][ T8584]  snd_pcm_oss_change_params_locked+0x1c05/0x34b0
[   89.526157][ T8584]  ? _snd_pcm_hw_param_set.constprop.0+0x510/0x510
[   89.533722][ T8584]  ? trace_hardirqs_off+0x50/0x220
[   89.539225][ T8584]  ? trace_hardirqs_on+0x55/0x220
[   89.545653][ T8584]  ? snd_pcm_oss_sync.isra.0+0x7d0/0x7d0
[   89.551827][ T8584]  snd_pcm_oss_change_params+0x76/0xd0
[   89.558347][ T8584]  snd_pcm_oss_make_ready+0xb7/0x170
[   89.564607][ T8584]  snd_pcm_oss_sync.isra.0+0x1be/0x7d0
[   89.570143][ T8584]  ? snd_pcm_oss_sync.isra.0+0x7d0/0x7d0
[   89.575875][ T8584]  snd_pcm_oss_release+0x210/0x280
[   89.581102][ T8584]  __fput+0x2da/0x850
[   89.585150][ T8584]  task_work_run+0xf4/0x1b0
[   89.589834][ T8584]  exit_to_usermode_loop+0x2fa/0x360
[   89.595118][ T8584]  do_syscall_64+0x6b1/0x7d0
[   89.599861][ T8584]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   89.605741][ T8584] RIP: 0033:0x4afb40
[   89.609619][ T8584] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
[   89.629754][ T8584] RSP: 002b:000000c000179588 EFLAGS: 00000212 ORIG_RAX: 0000000000000003
[   89.638192][ T8584] RAX: 0000000000000000 RBX: 000000c00002c000 RCX: 00000000004afb40
[   89.646418][ T8584] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
[   89.654402][ T8584] RBP: 000000c0001795c8 R08: 0000000000000000 R09: 0000000000000000
[   89.662833][ T8584] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000005
[   89.670898][ T8584] R13: 0000000000000004 R14: 0000000000000200 R15: ffffffffffffffff
[   89.680580][ T8584] Kernel Offset: disabled
[   89.685144][ T8584] Rebooting in 86400 seconds..