INFO: rcu detected stall in rescuer_thread
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syzbot
Apr 13, 2019, 8:02:30 PM4/13/19
to syzkaller-a...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: e525d2cf ANDROID: modpost: add an exception for CFI stubs
git tree: android-4.14
console output: https://syzkaller.appspot.com/x/log.txt?x=16b2ffa7400000
kernel config: https://syzkaller.appspot.com/x/.config?x=8635b07ba72cc81f
dashboard link: https://syzkaller.appspot.com/bug?extid=beab025c0586bcf5506a
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+beab02...@syzkaller.appspotmail.com
RAX: ffffffffffffffda RBX: 00007fbc998be700 RCX: 000000000045a049
RDX: 00007fbc998be9d0 RSI: 00007fbc998bddb0 RDI: 00000000003d0f00
RBP: 00007fffed769360 R08: 00007fbc998be700 R09: 00007fbc998be700
R10: 00007fbc998be9d0 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fffed76920f R14: 00007fbc998be9c0 R15: 000000000072c2cc
INFO: rcu_preempt detected stalls on CPUs/tasks:
Tasks blocked on level-0 rcu_node (CPUs 0-1): P9320
(detected by 0, t=10502 jiffies, g=41927, c=41926, q=5)
[30465] 0 30465 17618 8234 25 4 0
1000 syz-executor1
[30476] 0 30476 17618 8233 25 4 0
1000 syz-executor1
[30488] 0 30488 17618 8234 25 4 0
1000 syz-executor1
[30496] 0 30496 17618 12677 31 3 0
1000 syz-executor5
[30540] 0 30540 17618 8234 25 4 0
1000 syz-executor1
[30554] 0 30554 17618 8234 25 4 0
1000 syz-executor1
[30563] 0 30563 17618 12677 31 3 0
1000 syz-executor5
[30583] 0 30583 17618 8234 25 4 0
1000 syz-executor1
[30593] 0 30593 17618 8234 25 4 0
1000 syz-executor1
[30605] 0 30605 17618 8234 25 4 0
1000 syz-executor1
[30617] 0 30617 17618 8234 25 4 0
1000 syz-executor1
[30629] 0 30629 17618 12677 31 3 0
1000 syz-executor5
[30655] 0 30655 17618 8234 25 4 0
1000 syz-executor1
[30665] 0 30665 17618 8234 25 4 0
1000 syz-executor1
[30673] 0 30673 17618 8234 25 4 0
1000 syz-executor1
[30686] 0 30686 17618 8234 25 4 0
1000 syz-executor1
[30693] 0 30693 17618 12677 31 3 0
1000 syz-executor5
[30710] 0 30710 17618 8234 25 4 0
1000 syz-executor1
[30727] 0 30727 17618 8234 25 4 0
1000 syz-executor1
[30738] 0 30738 17618 8234 25 4 0
1000 syz-executor1
[30748] 0 30748 17618 12677 31 3 0
1000 syz-executor5
[30777] 0 30777 17618 12677 31 3 0
1000 syz-executor5
[30794] 0 30794 17585 8200 24 3 0
1000 syz-executor1
[30842] 0 30842 17618 8234 25 4 0
1000 syz-executor1
[30860] 0 30860 17618 12677 31 3 0
1000 syz-executor5
[30864] 3327 30864 17651 8208 28 3 0
1000 syz-executor0
[30883] 0 30883 17618 8234 25 4 0
1000 syz-executor1
[30902] 0 30902 17651 8235 25 4 0
1000 syz-executor1
[30914] 0 30914 17585 8200 24 3 0
1000 syz-executor1
[30916] 0 30916 17618 8203 24 3 0
1000 syz-executor1
[30919] 0 30919 17618 12677 31 3 0
1000 syz-executor5
[30944] 0 30944 17618 8234 25 4 0
1000 syz-executor1
[30958] 0 30958 17618 8234 25 4 0
1000 syz-executor1
[30978] 0 30978 17618 8234 25 4 0
1000 syz-executor1
[30988] 0 30988 17618 12677 31 3 0
1000 syz-executor5
[31004] 0 31004 17618 8234 25 4 0
1000 syz-executor1
[31022] 0 31022 17618 8234 25 4 0
1000 syz-executor1
[31039] 0 31039 17618 12677 31 3 0
1000 syz-executor5
[31060] 0 31060 17618 8234 25 4 0
1000 syz-executor1
[31090] 0 31090 17618 12677 31 3 0
1000 syz-executor5
[31115] 0 31115 17618 12677 31 3 0
1000 syz-executor5
[31130] 0 31130 17618 8234 25 4 0
1000 syz-executor1
[31148] 0 31148 17618 8234 25 4 0
1000 syz-executor1
[31177] 0 31177 17618 12677 31 3 0
1000 syz-executor5
[31268] 0 31268 17618 12677 31 3 0
1000 syz-executor5
[31272] 0 31272 17585 8200 24 3 0
1000 syz-executor1
[31296] 0 31296 17618 8234 25 4 0
1000 syz-executor1
[31312] 0 31312 17618 8233 25 4 0
1000 syz-executor1
[31327] 0 31327 17618 8234 25 4 0
1000 syz-executor1
[31338] 0 31338 17618 12677 31 3 0
1000 syz-executor5
[31387] 0 31387 17816 8253 32 4 0
0 syz-executor4
[31388] 0 31388 17618 8235 25 4 0
1000 syz-executor1
[31394] 0 31394 17618 12677 31 3 0
1000 syz-executor5
[31408] 0 31408 17585 8199 24 3 0
1000 syz-executor1
[31416] 0 31416 17651 8203 24 3 0
1000 syz-executor1
[31457] 0 31457 17618 8234 25 4 0
1000 syz-executor1
[31470] 0 31470 17618 12677 31 3 0
1000 syz-executor5
[31481] 0 31481 17618 8233 25 4 0
1000 syz-executor1
[31520] 0 31520 17618 8234 25 4 0
1000 syz-executor1
[31523] 0 31523 17618 12677 31 3 0
1000 syz-executor5
[31547] 0 31547 17618 8233 25 4 0
1000 syz-executor1
[31559] 0 31559 17618 8234 25 4 0
1000 syz-executor1
[31581] 0 31581 17618 8234 25 4 0
1000 syz-executor1
[31607] 0 31607 17618 8234 25 4 0
1000 syz-executor1
[31617] 0 31617 17618 8234 25 4 0
1000 syz-executor1
[31622] 0 31622 17618 12677 31 3 0
1000 syz-executor5
[31663] 0 31663 17618 12677 31 3 0
1000 syz-executor5
[31709] 0 31709 17618 8234 25 4 0
1000 syz-executor1
[31715] 0 31715 17618 12677 31 3 0
1000 syz-executor5
[31725] 0 31725 17618 8234 25 4 0
1000 syz-executor1
[31726] 0 31726 17618 8237 25 4 0
0 syz-executor4
[31754] 0 31754 17585 8230 24 4 0
1000 syz-executor1
[31756] 0 31756 17585 8193 23 3 0
0 syz-executor4
[31764] 0 31764 17585 8202 24 3 0
0 syz-executor4
[31785] 0 31785 17618 12677 31 3 0
1000 syz-executor5
[31820] 0 31820 17585 8198 24 3 0
1000 syz-executor3
[31833] 0 31833 17618 12677 31 3 0
1000 syz-executor5
[31860] 0 31860 17684 8204 25 3 0
1000 syz-executor3
[31918] 0 31918 17618 8233 25 4 0
1000 syz-executor1
[31921] 0 31921 17618 12677 31 3 0
1000 syz-executor5
[31932] 0 31932 17651 8238 26 4 0
1000 syz-executor2
[31945] 0 31945 17618 12677 31 3 0
1000 syz-executor5
[31954] 0 31954 17750 9285 26 3 0
1000 syz-executor0
[31983] 0 31983 17618 8205 24 3 0
0 syz-executor4
[31993] 0 31993 17618 12677 31 3 0
1000 syz-executor5
[31994] 0 31994 17651 8207 24 3 0
0 syz-executor4
[32050] 0 32050 17585 8233 26 4 0
1000 syz-executor2
[32061] 0 32061 17618 12677 31 3 0
1000 syz-executor5
[32079] 0 32079 17618 8237 27 4 0
1000 syz-executor2
[32124] 0 32124 17618 12677 31 3 0
1000 syz-executor5
[32154] 0 32154 17618 8238 26 4 0
0 syz-executor4
[32157] 0 32157 17618 8233 25 4 0
1000 syz-executor3
[32161] 0 32161 17585 8199 24 3 0
1000 syz-executor3
[32187] 0 32187 17816 8247 32 4 0
1000 syz-executor3
[32198] 0 32198 17618 12677 31 3 0
1000 syz-executor5
[32205] 0 32205 17684 8221 25 4 0
1000 syz-executor1
[32210] 0 32210 17684 8221 25 4 0
1000 syz-executor1
[32295] 0 32295 17618 12677 31 3 0
1000 syz-executor5
[32322] 0 32322 17618 12677 31 3 0
1000 syz-executor5
[32390] 0 32390 17618 12677 31 3 0
1000 syz-executor1
[32392] 0 32392 17618 12677 31 3 0
1000 syz-executor5
[32435] 0 32435 17651 8234 25 4 0
1000 syz-executor3
[32449] 0 32449 17618 12677 31 3 0
1000 syz-executor5
[32479] 0 32479 17618 8236 25 4 0
0 syz-executor4
[32517] 0 32517 17618 12677 31 3 0
1000 syz-executor5
[32556] 0 32556 17585 8191 24 3 0
1000 syz-executor2
[32559] 0 32559 17585 8200 25 3 0
1000 syz-executor2
[32573] 0 32573 17618 12677 31 3 0
1000 syz-executor5
[32593] 0 32593 17618 8234 26 4 0
1000 syz-executor2
[32628] 0 32628 17618 12677 31 3 0
1000 syz-executor5
[32681] 0 32681 17618 12677 31 3 0
1000 syz-executor5
[32720] 0 32720 17618 12677 31 3 0
1000 syz-executor5
[ 316] 0 316 17618 12677 31 3 0
1000 syz-executor5
[ 396] 0 396 17618 12677 31 3 0
1000 syz-executor5
[ 454] 0 454 17618 12677 31 3 0
1000 syz-executor5
[ 506] 0 506 17618 12677 31 3 0
1000 syz-executor5
[ 579] 0 579 17618 12677 31 3 0
1000 syz-executor5
[ 600] 0 600 17651 8235 25 4 0
1000 syz-executor3
[ 602] 0 602 17585 8199 24 3 0
1000 syz-executor3
[ 634] 0 634 17618 12677 31 3 0
1000 syz-executor5
[ 685] 0 685 17618 12677 31 3 0
1000 syz-executor5
[ 733] 0 733 17618 12677 31 3 0
1000 syz-executor5
[ 758] 0 758 17618 12677 31 3 0
1000 syz-executor5
[ 768] 0 768 17618 8237 25 4 0
1000 syz-executor1
[ 786] 0 786 17618 8232 25 4 0
1000 syz-executor3
[ 790] 0 790 17618 8232 25 4 0
1000 syz-executor3
[ 812] 0 812 17618 12677 31 3 0
1000 syz-executor5
[ 851] 0 851 17651 8239 26 4 0
1000 syz-executor2
[ 905] 0 905 17618 8238 26 4 0
1000 syz-executor2
[ 908] 0 908 17618 12677 31 3 0
1000 syz-executor5
[ 961] 0 961 17618 12677 31 3 0
1000 syz-executor5
[ 1013] 0 1013 17618 12677 31 3 0
1000 syz-executor5
[ 1067] 0 1067 17618 12677 31 3 0
1000 syz-executor5
[ 1088] 0 1088 17585 8199 24 3 0
1000 syz-executor3
[ 1090] 0 1090 17585 8231 25 4 0
1000 syz-executor3
[ 1129] 0 1129 17618 12677 31 3 0
1000 syz-executor5
[ 1194] 0 1194 17618 12677 31 3 0
1000 syz-executor5
[ 1245] 0 1245 17618 12677 31 3 0
1000 syz-executor5
[ 1271] 0 1271 17585 8230 25 4 0
1000 syz-executor3
[ 1280] 0 1280 17618 8233 26 4 0
1000 syz-executor3
[ 1316] 0 1316 17618 12677 31 3 0
1000 syz-executor5
[ 1368] 0 1368 17618 12677 31 3 0
1000 syz-executor5
[ 1417] 0 1417 17651 8236 25 4 0
1000 syz-executor1
[ 1430] 0 1430 17618 12677 31 3 0
1000 syz-executor5
[ 1456] 0 1456 17717 8242 25 4 0
0 syz-executor4
[ 1493] 0 1493 17618 12677 31 3 0
1000 syz-executor5
[ 1574] 0 1574 17618 12677 31 3 0
1000 syz-executor5
[ 1598] 0 1598 17618 12677 31 3 0
1000 syz-executor5
[ 1686] 0 1686 17651 8234 25 4 0
1000 syz-executor3
[ 1707] 0 1707 17618 12677 31 3 0
1000 syz-executor5
[ 1764] 0 1764 17618 12677 31 3 0
1000 syz-executor5
[ 1866] 0 1866 17618 12677 31 3 0
1000 syz-executor5
[ 1899] 0 1899 17651 8234 25 4 0
1000 syz-executor1
[ 1907] 0 1907 17618 12677 31 3 0
1000 syz-executor5
[ 1908] 0 1908 17585 8232 24 3 0
1000 syz-executor2
[ 1918] 0 1918 17651 8239 28 3 0
1000 syz-executor2
[ 1937] 0 1937 17585 8232 24 3 0
1000 syz-executor2
[ 1964] 0 1964 17585 8232 24 3 0
1000 syz-executor2
[ 1979] 0 1979 17585 8232 24 3 0
1000 syz-executor2
[ 1983] 0 1983 17618 12677 31 3 0
1000 syz-executor5
[ 2008] 0 2008 17718 8241 26 4 0
1000 syz-executor1
[ 2057] 0 2057 17618 12677 31 3 0
1000 syz-executor5
[ 2183] 0 2183 17783 8247 31 4 0
0 syz-executor4
[ 2199] 0 2199 17618 12677 31 3 0
1000 syz-executor5
[ 2234] 0 2234 17585 8198 24 3 0
1000 syz-executor3
[ 2248] 0 2248 17717 8206 27 3 0
1000 syz-executor3
[ 2345] 0 2345 17585 8231 26 4 0
1000 syz-executor1
[ 2435] 0 2435 17618 8235 25 4 0
1000 syz-executor1
[ 2452] 0 2452 17684 8241 27 4 0
1000 syz-executor2
[ 2535] 0 2535 17585 8193 23 3 0
0 syz-executor4
[ 2536] 0 2536 17618 8204 24 3 0
0 syz-executor4
[ 2556] 0 2556 17618 12707 31 3 0
1000 syz-executor5
[ 2575] 0 2575 17651 8237 26 4 0
1000 syz-executor2
[ 2625] 0 2625 17585 8199 24 3 0
1000 syz-executor1
[ 2898] 0 2898 17618 8238 26 4 0
0 syz-executor4
[ 3022] 0 3022 17585 8203 24 3 0
0 syz-executor4
[ 3052] 0 3052 17783 8216 24 3 0
0 syz-executor4
[ 3085] 0 3085 17651 8235 25 4 0
1000 syz-executor3
[ 3222] 0 3222 17618 8237 27 4 0
1000 syz-executor2
[ 3227] 0 3227 17618 8237 27 4 0
1000 syz-executor2
[ 3246] 0 3246 17651 8237 26 4 0
1000 syz-executor2
[ 3249] 0 3249 17651 8237 25 3 0
1000 syz-executor2
[ 3263] 0 3263 17651 8237 26 4 0
1000 syz-executor2
[ 3264] 0 3264 17651 8237 25 3 0
1000 syz-executor2
[ 3532] 0 3532 17618 8233 26 4 0
1000 syz-executor3
[ 3637] 0 3637 17651 8240 25 4 0
0 syz-executor4
[ 3641] 0 3641 17583 8230 25 4 0
1000 syz-executor1
[ 3792] 0 3792 17618 12677 31 3 0
1000 syz-executor5
[ 3864] 0 3864 17618 12677 31 3 0
1000 syz-executor5
[ 4057] 0 4057 17585 8200 25 3 0
1000 syz-executor0
[ 4062] 0 4062 17618 8202 25 3 0
1000 syz-executor0
[ 4256] 0 4256 17585 8203 24 3 0
0 syz-executor4
[ 4279] 0 4279 17684 8796 25 3 0
0 syz-executor4
[ 4321] 0 4321 17585 8200 25 3 0
1000 syz-executor1
[ 4343] 0 4343 17684 8206 25 3 0
1000 syz-executor1
[ 4394] 0 4394 17684 8237 27 4 0
1000 syz-executor3
[ 4495] 0 4495 17618 12707 31 3 0
1000 syz-executor5
[ 4723] 0 4723 17618 8238 26 4 0
0 syz-executor4
[ 4725] 0 4725 17618 8238 26 4 0
0 syz-executor4
[ 4786] 0 4786 17618 8232 25 4 0
1000 syz-executor3
[ 4794] 0 4794 17618 8232 25 4 0
1000 syz-executor3
[ 4830] 0 4830 17651 8236 26 4 0
1000 syz-executor0
[ 4846] 0 4846 17618 8239 26 4 0
1000 syz-executor2
[ 4861] 0 4861 17585 8233 26 4 0
1000 syz-executor2
[ 4899] 0 4899 17618 8236 26 3 0
1000 syz-executor2
[ 4903] 0 4903 17651 8238 26 3 0
1000 syz-executor2
[ 4928] 0 4928 17585 8234 26 3 0
1000 syz-executor2
[ 5160] 0 5160 17585 8199 24 3 0
1000 syz-executor1
[ 5180] 0 5180 17618 8207 25 3 0
0 syz-executor4
[ 5226] 0 5226 17585 8234 25 3 0
1000 syz-executor2
[ 5232] 0 5232 17618 8236 25 3 0
1000 syz-executor2
[ 5396] 0 5396 17618 8206 25 3 0
0 syz-executor4
[ 5422] 0 5422 17684 8205 25 3 0
1000 syz-executor3
[ 5655] 0 5655 17618 8206 25 3 0
0 syz-executor4
[ 5806] 0 5806 17618 8206 25 3 0
0 syz-executor4
[ 5834] 0 5834 17585 8204 25 3 0
0 syz-executor4
[ 5848] 0 5848 17618 8232 25 4 0
1000 syz-executor3
[ 5915] 0 5915 17618 8203 24 3 0
1000 syz-executor1
[ 5930] 0 5930 17684 8207 24 3 0
1000 syz-executor1
[ 5981] 0 5981 17651 8235 25 4 0
1000 syz-executor1
[ 6001] 0 6001 17618 8235 27 4 0
1000 syz-executor3
[ 6007] 0 6007 17618 8206 25 3 0
0 syz-executor4
[ 6069] 0 6069 17684 8240 27 4 0
1000 syz-executor3
[ 6199] 0 6199 17585 8202 25 3 0
1000 syz-executor1
[ 6204] 0 6204 17651 8208 25 3 0
1000 syz-executor1
[ 6282] 0 6282 17618 8206 25 3 0
0 syz-executor4
[ 6327] 0 6327 17618 8206 25 3 0
0 syz-executor4
[ 6369] 0 6369 17618 8206 25 3 0
0 syz-executor4
[ 6437] 0 6437 17618 8206 25 3 0
0 syz-executor4
[ 6496] 0 6496 17585 8204 25 3 0
0 syz-executor4
[ 6561] 0 6561 17618 8206 25 3 0
0 syz-executor4
[ 6597] 0 6597 17618 8206 25 3 0
0 syz-executor4
[ 6680] 0 6680 17585 8204 25 3 0
1000 syz-executor5
[ 6684] 0 6684 17585 8207 25 3 0
0 syz-executor4
[ 6724] 0 6724 17618 8208 25 3 0
0 syz-executor4
[ 6734] 0 6734 17585 8192 23 3 0
1000 syz-executor1
[ 6905] 0 6905 17618 8208 25 3 0
0 syz-executor4
[ 6906] 0 6906 17651 8240 25 4 0
1000 syz-executor1
[ 6936] 0 6936 17618 12679 31 3 0
1000 syz-executor5
[ 6947] 0 6947 17680 12679 31 3 0
1000 syz-executor5
[ 7103] 0 7103 17651 8240 25 4 0
1000 syz-executor1
[ 7129] 0 7129 17618 8208 25 3 0
0 syz-executor4
[ 7141] 0 7141 17618 8241 26 4 0
1000 syz-executor1
[ 7314] 0 7314 17618 8208 25 3 0
0 syz-executor4
[ 7366] 0 7366 17618 8208 25 3 0
0 syz-executor4
[ 7378] 0 7378 17618 8240 25 4 0
1000 syz-executor1
[ 7382] 0 7382 17618 8240 25 4 0
1000 syz-executor1
[ 7418] 0 7418 17618 8208 25 3 0
0 syz-executor4
[ 7459] 0 7459 17618 8208 25 3 0
0 syz-executor4
[ 7602] 0 7602 17618 8208 25 3 0
0 syz-executor4
[ 7661] 0 7661 17618 8208 25 3 0
0 syz-executor4
[ 7681] 0 7681 17618 12679 31 3 0
1000 syz-executor5
[ 8195] 0 8195 17651 8242 26 4 0
1000 syz-executor0
[ 8196] 0 8196 17651 8242 26 4 0
1000 syz-executor0
[ 8307] 0 8307 5384 187 14 3 0
-1000 udevd
[ 8465] 0 8465 17618 8211 25 3 0
0 syz-executor4
[ 8544] 0 8544 17618 8211 25 3 0
0 syz-executor4
[ 8573] 0 8573 17618 8208 25 3 0
1000 syz-executor5
[ 8577] 0 8577 17585 8209 25 3 0
0 syz-executor4
[ 8685] 0 8685 5384 187 14 3 0
-1000 udevd
[ 8755] 0 8755 17651 8383 26 4 0
1000 syz-executor0
[ 8815] 0 8815 17585 8217 25 3 0
1000 syz-executor0
[ 8816] 0 8816 17618 8223 25 3 0
0 syz-executor4
[ 8818] 0 8818 17618 8219 25 3 0
1000 syz-executor0
[ 8940] 0 8940 17585 8373 25 4 0
1000 syz-executor1
[ 9005] 0 9005 17618 8375 25 4 0
1000 syz-executor1
[ 9257] 0 9257 17618 8412 26 4 0
1000 syz-executor0
[ 9279] 0 9279 17713 17687 40 4 0
0 syz-executor4
[ 9299] 0 9299 17783 8396 33 4 0
1000 syz-executor0
[ 9318] 0 9318 101 1 5 3 0
0 modprobe
[ 9319] 0 9319 1576 20 9 3 0
0 modprobe
[ 9320] 0 9320 1539 12 6 3 0
0 modprobe
[ 9321] 0 9321 1576 20 9 3 0
0 modprobe
[ 9325] 0 9325 1576 21 9 3 0
0 modprobe
[ 9326] 0 9326 1576 20 9 3 0
0 modprobe
[ 9328] 0 9328 635 9 6 3 0
0 modprobe
[ 9329] 0 9329 1576 20 9 3 0
0 modprobe
[ 9331] 0 9331 1576 21 8 3 0
0 modprobe
[ 9334] 0 9334 1547 12 8 3 0
0 modprobe
[ 9335] 0 9335 1547 13 7 3 0
0 modprobe
[ 9337] 0 9337 1576 21 9 3 0
0 modprobe
CPU: 1 PID: 9318 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
SYSC_faccessat fs/open.c:394 [inline]
SyS_faccessat+0x20d/0x660 fs/open.c:362
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7fd4ad02d267
RSP: 002b:00007ffe6f500628 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 0000561f084865c1 RCX: 00007fd4ad02d267
RDX: 00000000000033ef RSI: 0000000000000000 RDI: 00007fd4ad0312e6
RBP: 00007fd4ad230000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 00007fd4ad2381c8
R13: 00007fd4ad230718 R14: 00000000000033ef R15: 00007fd4ad238570
Out of memory: Kill process 10425 (syz-executor1) score 1007 or sacrifice
child
Killed process 10425 (syz-executor1) total-vm:70720kB, anon-rss:18312kB,
file-rss:32640kB, shmem-rss:0kB
CPU: 1 PID: 9329 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_fstatat include/linux/fs.h:3088 [inline]
SYSC_newfstatat fs/stat.c:364 [inline]
SyS_newfstatat+0x89/0x100 fs/stat.c:358
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7fe72a00be1a
RSP: 002b:00007ffc04ca1b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007fe72a2d7471 RCX: 00007fe72a00be1a
RDX: 00007ffc04ca1cb0 RSI: 00007ffc04ca1d53 RDI: 0000000000000000
RBP: 00007fe72a4dc2e8 R08: 0000000000000000 R09: 7665646266080028
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc04ca1d40
R13: 00007ffc04ca1d53 R14: 000055fcb9e551a0 R15: 00055facc785c680
CPU: 1 PID: 9319 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_stat include/linux/fs.h:3077 [inline]
SYSC_newstat fs/stat.c:337 [inline]
SyS_newstat+0x81/0xf0 fs/stat.c:333
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7ff6b2c93c65
RSP: 002b:00007ffddad2a878 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 00007ff6b2f5f481 RCX: 00007ff6b2c93c65
RDX: 00007ffddad2a970 RSI: 00007ffddad2a970 RDI: 00007ff6b2f5f481
RBP: 00007ff6b31642f0 R08: 00007ff6b2f4aef8 R09: 00007ff6b2ce7070
R10: 0000000000000000 R11: 0000000000000246 R12: 000056252ae03160
R13: 00007ffddad2aaa3 R14: 0000000000000010 R15: 00055facc785c680
CPU: 1 PID: 9325 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_fstatat include/linux/fs.h:3088 [inline]
SYSC_newfstatat fs/stat.c:364 [inline]
SyS_newfstatat+0x89/0x100 fs/stat.c:358
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f7afb061e1a
RSP: 002b:00007fff17adfa98 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007f7afb32d471 RCX: 00007f7afb061e1a
RDX: 00007fff17adfc20 RSI: 00007fff17adfcc3 RDI: 0000000000000000
RBP: 00007f7afb5322e8 R08: 0000000000000000 R09: 7665646266080028
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff17adfcb0
R13: 00007fff17adfcc3 R14: 0000560c512b91a0 R15: 00055facc785c680
CPU: 1 PID: 1776 Comm: syz-fuzzer Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
__page_cache_alloc include/linux/pagemap.h:226 [inline]
page_cache_read mm/filemap.c:2286 [inline]
filemap_fault+0xcdd/0x14a0 mm/filemap.c:2470
ext4_filemap_fault+0x7d/0xb0 fs/ext4/inode.c:6179
__do_fault+0x80/0x210 mm/memory.c:3194
do_read_fault mm/memory.c:3604 [inline]
do_fault mm/memory.c:3730 [inline]
handle_pte_fault mm/memory.c:3960 [inline]
__handle_mm_fault+0x991/0x25f0 mm/memory.c:4084
handle_mm_fault+0x2f2/0x6eb mm/memory.c:4121
__do_page_fault+0x45d/0xb60 arch/x86/mm/fault.c:1425
page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1104
RIP: 0020:0x13
RSP: 0001:000000c420031f38 EFLAGS: 00000001
CPU: 1 PID: 9326 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_stat include/linux/fs.h:3077 [inline]
SYSC_newstat fs/stat.c:337 [inline]
SyS_newstat+0x81/0xf0 fs/stat.c:333
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f810d837c65
RSP: 002b:00007ffde73cb3c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 00007f810db03471 RCX: 00007f810d837c65
RDX: 00007ffde73cb4c0 RSI: 00007ffde73cb4c0 RDI: 00007f810db03471
RBP: 00007f810dd082e8 R08: 2b37382e34312e34 R09: 00007ffde73cc512
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 1626 Comm: rs:main Q:Reg Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
__page_cache_alloc include/linux/pagemap.h:226 [inline]
page_cache_read mm/filemap.c:2286 [inline]
filemap_fault+0xcdd/0x14a0 mm/filemap.c:2470
ext4_filemap_fault+0x7d/0xb0 fs/ext4/inode.c:6179
__do_fault+0x80/0x210 mm/memory.c:3194
do_read_fault mm/memory.c:3604 [inline]
do_fault mm/memory.c:3730 [inline]
handle_pte_fault mm/memory.c:3960 [inline]
__handle_mm_fault+0x991/0x25f0 mm/memory.c:4084
handle_mm_fault+0x2f2/0x6eb mm/memory.c:4121
__do_page_fault+0x45d/0xb60 arch/x86/mm/fault.c:1425
page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1104
RIP: 0000:0x5
RSP: 867fa0:0000000000868140 EFLAGS: 008cc950
CPU: 1 PID: 1628 Comm: rsyslogd Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
__page_cache_alloc include/linux/pagemap.h:226 [inline]
page_cache_read mm/filemap.c:2286 [inline]
filemap_fault+0xcdd/0x14a0 mm/filemap.c:2470
ext4_filemap_fault+0x7d/0xb0 fs/ext4/inode.c:6179
__do_fault+0x80/0x210 mm/memory.c:3194
do_read_fault mm/memory.c:3604 [inline]
do_fault mm/memory.c:3730 [inline]
handle_pte_fault mm/memory.c:3960 [inline]
__handle_mm_fault+0x991/0x25f0 mm/memory.c:4084
handle_mm_fault+0x2f2/0x6eb mm/memory.c:4121
__do_page_fault+0x45d/0xb60 arch/x86/mm/fault.c:1425
page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1104
RIP: 95b5b5a3:0xdb
RSP: 94325d10:00007f1694325d00 EFLAGS: 00000001
Free swap = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315641 pages reserved
oom_reaper: reaped process 10425 (syz-executor1), now anon-rss:0kB,
file-rss:0kB, shmem-rss:0kB
lowmem_reserve[]: 0 0 0
DMA32: 140*4kB (UMH) 265*8kB (UMH) 917*16kB (UEH) 70*32kB (UMEH) 0*64kB
2*128kB (H) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 19848kB
Normal: 915*4kB (UMEH) 88*8kB (UMEH) 112*16kB (UMEH) 50*32kB (UMEH) 21*64kB
(ME) 13*128kB (ME) 12*256kB (ME) 8*512kB (ME) 1*1024kB (M) 0*2048kB
1*4096kB (M) = 23052kB
10243 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315641 pages reserved
Node 0 active_anon:448340kB inactive_anon:5297624kB active_file:13852kB
inactive_file:4328kB unevictable:37948kB isolated(anon):0kB
isolated(file):128kB mapped:225632kB dirty:0kB writeback:0kB shmem:3404kB
writeback_tmp:0kB unstable:0kB all_unreclaimable? no
DMA32 free:19756kB min:4684kB low:7692kB high:10700kB active_anon:30288kB
inactive_anon:2810928kB active_file:4100kB inactive_file:584kB
unevictable:13704kB writepending:0kB present:3145324kB managed:3012120kB
mlocked:13740kB kernel_stack:13440kB pagetables:35940kB bounce:0kB
free_pcp:664kB local_pcp:664kB free_cma:0kB
lowmem_reserve[]: 0 3505 3505
Normal free:22664kB min:5588kB low:9176kB high:12764kB active_anon:418052kB
inactive_anon:2486696kB active_file:9268kB inactive_file:4192kB
unevictable:24544kB writepending:0kB present:4718592kB managed:3589232kB
mlocked:24204kB kernel_stack:16192kB pagetables:53708kB bounce:0kB
free_pcp:712kB local_pcp:712kB free_cma:0kB
lowmem_reserve[]: 0 0 0
DMA32: 140*4kB (UMH) 265*8kB (UMH) 917*16kB (UEH) 70*32kB (UMEH) 0*64kB
2*128kB (H) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 19848kB
Normal: 915*4kB (UMEH) 88*8kB (UMEH) 112*16kB (UMEH) 51*32kB (UMEH) 21*64kB
(ME) 13*128kB (ME) 12*256kB (ME) 8*512kB (ME) 1*1024kB (M) 0*2048kB
1*4096kB (M) = 23084kB
10243 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315641 pages reserved
warn_alloc_show_mem: 8 callbacks suppressed
Mem-Info:
active_anon:112083 inactive_anon:1319884 isolated_anon:0
active_file:3594 inactive_file:1008 isolated_file:32
unevictable:9362 dirty:0 writeback:0 unstable:0
slab_reclaimable:6530 slab_unreclaimable:69179
mapped:54054 shmem:851 pagetables:22341 bounce:0
free:15327 free_pcp:339 free_cma:0
Node 0 active_anon:448332kB inactive_anon:5279536kB active_file:14376kB
inactive_file:4032kB unevictable:37448kB isolated(anon):0kB
isolated(file):128kB mapped:216216kB dirty:0kB writeback:0kB shmem:3404kB
writeback_tmp:0kB unstable:0kB all_unreclaimable? no
DMA32 free:33892kB min:4684kB low:7692kB high:10700kB active_anon:30288kB
inactive_anon:2797172kB active_file:4348kB inactive_file:188kB
unevictable:13692kB writepending:0kB present:3145324kB managed:3012120kB
mlocked:13444kB kernel_stack:13408kB pagetables:35888kB bounce:0kB
free_pcp:640kB local_pcp:640kB free_cma:0kB
lowmem_reserve[]: 0 3505 3505
Normal free:27416kB min:5588kB low:9176kB high:12764kB active_anon:418044kB
inactive_anon:2482364kB active_file:10028kB inactive_file:3844kB
unevictable:23756kB writepending:0kB present:4718592kB managed:3589232kB
mlocked:23700kB kernel_stack:16160kB pagetables:53476kB bounce:0kB
free_pcp:716kB local_pcp:716kB free_cma:0kB
lowmem_reserve[]: 0 0 0
DMA32: 1261*4kB (UMH) 756*8kB (UMH) 1115*16kB (UMEH) 125*32kB (UMEH)
11*64kB (UM) 2*128kB (H) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB =
33892kB
Normal: 1726*4kB (UMEH) 126*8kB (UMEH) 113*16kB (UMEH) 53*32kB (UMEH)
20*64kB (ME) 13*128kB (ME) 15*256kB (ME) 8*512kB (ME) 1*1024kB (M) 0*2048kB
1*4096kB (M) = 27416kB
10191 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315641 pages reserved
NMI backtrace for cpu 0
CPU: 0 PID: 25 Comm: writeback Not tainted 4.14.87+ #21
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x171/0x1bf kernel/rcu/tree.c:1396
print_other_cpu_stall kernel/rcu/tree.c:1485 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3382 [inline]
rcu_pending kernel/rcu/tree.c:3444 [inline]
rcu_check_callbacks.cold.56+0x7a5/0xd99 kernel/rcu/tree.c:2784
update_process_times+0x24/0x60 kernel/time/timer.c:1588
tick_sched_handle.isra.8+0x73/0x150 kernel/time/tick-sched.c:161
tick_sched_timer+0x7e/0x160 kernel/time/tick-sched.c:1321
__run_hrtimer kernel/time/hrtimer.c:1259 [inline]
__hrtimer_run_queues+0x2d0/0xc10 kernel/time/hrtimer.c:1323
hrtimer_interrupt+0x19a/0x440 kernel/time/hrtimer.c:1357
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
smp_apic_timer_interrupt+0x13a/0x600 arch/x86/kernel/apic/apic.c:1062
apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778
[inline]
RIP: 0010:lock_acquire+0x15c/0x380 kernel/locking/lockdep.c:3994
RSP: 0018:ffff8881da137b88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000007 RBX: 0000000000000246 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8881da128830 RDI: 0000000000000246
RBP: ffff8881da128000 R08: 00000000000031b2 R09: ffffffff8cae5570
R10: ffff8881da128830 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xf5/0x1480 kernel/locking/mutex.c:893
worker_detach_from_pool+0x32/0x2a0 kernel/workqueue.c:1731
rescuer_thread+0x64b/0xd10 kernel/workqueue.c:2392
kthread+0x348/0x420 kernel/kthread.c:232
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
---
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 syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: e525d2cf ANDROID: modpost: add an exception for CFI stubs
git tree: android-4.14
console output: https://syzkaller.appspot.com/x/log.txt?x=16b2ffa7400000
kernel config: https://syzkaller.appspot.com/x/.config?x=8635b07ba72cc81f
dashboard link: https://syzkaller.appspot.com/bug?extid=beab025c0586bcf5506a
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+beab02...@syzkaller.appspotmail.com
RAX: ffffffffffffffda RBX: 00007fbc998be700 RCX: 000000000045a049
RDX: 00007fbc998be9d0 RSI: 00007fbc998bddb0 RDI: 00000000003d0f00
RBP: 00007fffed769360 R08: 00007fbc998be700 R09: 00007fbc998be700
R10: 00007fbc998be9d0 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fffed76920f R14: 00007fbc998be9c0 R15: 000000000072c2cc
INFO: rcu_preempt detected stalls on CPUs/tasks:
Tasks blocked on level-0 rcu_node (CPUs 0-1): P9320
(detected by 0, t=10502 jiffies, g=41927, c=41926, q=5)
[30465] 0 30465 17618 8234 25 4 0
1000 syz-executor1
[30476] 0 30476 17618 8233 25 4 0
1000 syz-executor1
[30488] 0 30488 17618 8234 25 4 0
1000 syz-executor1
[30496] 0 30496 17618 12677 31 3 0
1000 syz-executor5
[30540] 0 30540 17618 8234 25 4 0
1000 syz-executor1
[30554] 0 30554 17618 8234 25 4 0
1000 syz-executor1
[30563] 0 30563 17618 12677 31 3 0
1000 syz-executor5
[30583] 0 30583 17618 8234 25 4 0
1000 syz-executor1
[30593] 0 30593 17618 8234 25 4 0
1000 syz-executor1
[30605] 0 30605 17618 8234 25 4 0
1000 syz-executor1
[30617] 0 30617 17618 8234 25 4 0
1000 syz-executor1
[30629] 0 30629 17618 12677 31 3 0
1000 syz-executor5
[30655] 0 30655 17618 8234 25 4 0
1000 syz-executor1
[30665] 0 30665 17618 8234 25 4 0
1000 syz-executor1
[30673] 0 30673 17618 8234 25 4 0
1000 syz-executor1
[30686] 0 30686 17618 8234 25 4 0
1000 syz-executor1
[30693] 0 30693 17618 12677 31 3 0
1000 syz-executor5
[30710] 0 30710 17618 8234 25 4 0
1000 syz-executor1
[30727] 0 30727 17618 8234 25 4 0
1000 syz-executor1
[30738] 0 30738 17618 8234 25 4 0
1000 syz-executor1
[30748] 0 30748 17618 12677 31 3 0
1000 syz-executor5
[30777] 0 30777 17618 12677 31 3 0
1000 syz-executor5
[30794] 0 30794 17585 8200 24 3 0
1000 syz-executor1
[30842] 0 30842 17618 8234 25 4 0
1000 syz-executor1
[30860] 0 30860 17618 12677 31 3 0
1000 syz-executor5
[30864] 3327 30864 17651 8208 28 3 0
1000 syz-executor0
[30883] 0 30883 17618 8234 25 4 0
1000 syz-executor1
[30902] 0 30902 17651 8235 25 4 0
1000 syz-executor1
[30914] 0 30914 17585 8200 24 3 0
1000 syz-executor1
[30916] 0 30916 17618 8203 24 3 0
1000 syz-executor1
[30919] 0 30919 17618 12677 31 3 0
1000 syz-executor5
[30944] 0 30944 17618 8234 25 4 0
1000 syz-executor1
[30958] 0 30958 17618 8234 25 4 0
1000 syz-executor1
[30978] 0 30978 17618 8234 25 4 0
1000 syz-executor1
[30988] 0 30988 17618 12677 31 3 0
1000 syz-executor5
[31004] 0 31004 17618 8234 25 4 0
1000 syz-executor1
[31022] 0 31022 17618 8234 25 4 0
1000 syz-executor1
[31039] 0 31039 17618 12677 31 3 0
1000 syz-executor5
[31060] 0 31060 17618 8234 25 4 0
1000 syz-executor1
[31090] 0 31090 17618 12677 31 3 0
1000 syz-executor5
[31115] 0 31115 17618 12677 31 3 0
1000 syz-executor5
[31130] 0 31130 17618 8234 25 4 0
1000 syz-executor1
[31148] 0 31148 17618 8234 25 4 0
1000 syz-executor1
[31177] 0 31177 17618 12677 31 3 0
1000 syz-executor5
[31268] 0 31268 17618 12677 31 3 0
1000 syz-executor5
[31272] 0 31272 17585 8200 24 3 0
1000 syz-executor1
[31296] 0 31296 17618 8234 25 4 0
1000 syz-executor1
[31312] 0 31312 17618 8233 25 4 0
1000 syz-executor1
[31327] 0 31327 17618 8234 25 4 0
1000 syz-executor1
[31338] 0 31338 17618 12677 31 3 0
1000 syz-executor5
[31387] 0 31387 17816 8253 32 4 0
0 syz-executor4
[31388] 0 31388 17618 8235 25 4 0
1000 syz-executor1
[31394] 0 31394 17618 12677 31 3 0
1000 syz-executor5
[31408] 0 31408 17585 8199 24 3 0
1000 syz-executor1
[31416] 0 31416 17651 8203 24 3 0
1000 syz-executor1
[31457] 0 31457 17618 8234 25 4 0
1000 syz-executor1
[31470] 0 31470 17618 12677 31 3 0
1000 syz-executor5
[31481] 0 31481 17618 8233 25 4 0
1000 syz-executor1
[31520] 0 31520 17618 8234 25 4 0
1000 syz-executor1
[31523] 0 31523 17618 12677 31 3 0
1000 syz-executor5
[31547] 0 31547 17618 8233 25 4 0
1000 syz-executor1
[31559] 0 31559 17618 8234 25 4 0
1000 syz-executor1
[31581] 0 31581 17618 8234 25 4 0
1000 syz-executor1
[31607] 0 31607 17618 8234 25 4 0
1000 syz-executor1
[31617] 0 31617 17618 8234 25 4 0
1000 syz-executor1
[31622] 0 31622 17618 12677 31 3 0
1000 syz-executor5
[31663] 0 31663 17618 12677 31 3 0
1000 syz-executor5
[31709] 0 31709 17618 8234 25 4 0
1000 syz-executor1
[31715] 0 31715 17618 12677 31 3 0
1000 syz-executor5
[31725] 0 31725 17618 8234 25 4 0
1000 syz-executor1
[31726] 0 31726 17618 8237 25 4 0
0 syz-executor4
[31754] 0 31754 17585 8230 24 4 0
1000 syz-executor1
[31756] 0 31756 17585 8193 23 3 0
0 syz-executor4
[31764] 0 31764 17585 8202 24 3 0
0 syz-executor4
[31785] 0 31785 17618 12677 31 3 0
1000 syz-executor5
[31820] 0 31820 17585 8198 24 3 0
1000 syz-executor3
[31833] 0 31833 17618 12677 31 3 0
1000 syz-executor5
[31860] 0 31860 17684 8204 25 3 0
1000 syz-executor3
[31918] 0 31918 17618 8233 25 4 0
1000 syz-executor1
[31921] 0 31921 17618 12677 31 3 0
1000 syz-executor5
[31932] 0 31932 17651 8238 26 4 0
1000 syz-executor2
[31945] 0 31945 17618 12677 31 3 0
1000 syz-executor5
[31954] 0 31954 17750 9285 26 3 0
1000 syz-executor0
[31983] 0 31983 17618 8205 24 3 0
0 syz-executor4
[31993] 0 31993 17618 12677 31 3 0
1000 syz-executor5
[31994] 0 31994 17651 8207 24 3 0
0 syz-executor4
[32050] 0 32050 17585 8233 26 4 0
1000 syz-executor2
[32061] 0 32061 17618 12677 31 3 0
1000 syz-executor5
[32079] 0 32079 17618 8237 27 4 0
1000 syz-executor2
[32124] 0 32124 17618 12677 31 3 0
1000 syz-executor5
[32154] 0 32154 17618 8238 26 4 0
0 syz-executor4
[32157] 0 32157 17618 8233 25 4 0
1000 syz-executor3
[32161] 0 32161 17585 8199 24 3 0
1000 syz-executor3
[32187] 0 32187 17816 8247 32 4 0
1000 syz-executor3
[32198] 0 32198 17618 12677 31 3 0
1000 syz-executor5
[32205] 0 32205 17684 8221 25 4 0
1000 syz-executor1
[32210] 0 32210 17684 8221 25 4 0
1000 syz-executor1
[32295] 0 32295 17618 12677 31 3 0
1000 syz-executor5
[32322] 0 32322 17618 12677 31 3 0
1000 syz-executor5
[32390] 0 32390 17618 12677 31 3 0
1000 syz-executor1
[32392] 0 32392 17618 12677 31 3 0
1000 syz-executor5
[32435] 0 32435 17651 8234 25 4 0
1000 syz-executor3
[32449] 0 32449 17618 12677 31 3 0
1000 syz-executor5
[32479] 0 32479 17618 8236 25 4 0
0 syz-executor4
[32517] 0 32517 17618 12677 31 3 0
1000 syz-executor5
[32556] 0 32556 17585 8191 24 3 0
1000 syz-executor2
[32559] 0 32559 17585 8200 25 3 0
1000 syz-executor2
[32573] 0 32573 17618 12677 31 3 0
1000 syz-executor5
[32593] 0 32593 17618 8234 26 4 0
1000 syz-executor2
[32628] 0 32628 17618 12677 31 3 0
1000 syz-executor5
[32681] 0 32681 17618 12677 31 3 0
1000 syz-executor5
[32720] 0 32720 17618 12677 31 3 0
1000 syz-executor5
[ 316] 0 316 17618 12677 31 3 0
1000 syz-executor5
[ 396] 0 396 17618 12677 31 3 0
1000 syz-executor5
[ 454] 0 454 17618 12677 31 3 0
1000 syz-executor5
[ 506] 0 506 17618 12677 31 3 0
1000 syz-executor5
[ 579] 0 579 17618 12677 31 3 0
1000 syz-executor5
[ 600] 0 600 17651 8235 25 4 0
1000 syz-executor3
[ 602] 0 602 17585 8199 24 3 0
1000 syz-executor3
[ 634] 0 634 17618 12677 31 3 0
1000 syz-executor5
[ 685] 0 685 17618 12677 31 3 0
1000 syz-executor5
[ 733] 0 733 17618 12677 31 3 0
1000 syz-executor5
[ 758] 0 758 17618 12677 31 3 0
1000 syz-executor5
[ 768] 0 768 17618 8237 25 4 0
1000 syz-executor1
[ 786] 0 786 17618 8232 25 4 0
1000 syz-executor3
[ 790] 0 790 17618 8232 25 4 0
1000 syz-executor3
[ 812] 0 812 17618 12677 31 3 0
1000 syz-executor5
[ 851] 0 851 17651 8239 26 4 0
1000 syz-executor2
[ 905] 0 905 17618 8238 26 4 0
1000 syz-executor2
[ 908] 0 908 17618 12677 31 3 0
1000 syz-executor5
[ 961] 0 961 17618 12677 31 3 0
1000 syz-executor5
[ 1013] 0 1013 17618 12677 31 3 0
1000 syz-executor5
[ 1067] 0 1067 17618 12677 31 3 0
1000 syz-executor5
[ 1088] 0 1088 17585 8199 24 3 0
1000 syz-executor3
[ 1090] 0 1090 17585 8231 25 4 0
1000 syz-executor3
[ 1129] 0 1129 17618 12677 31 3 0
1000 syz-executor5
[ 1194] 0 1194 17618 12677 31 3 0
1000 syz-executor5
[ 1245] 0 1245 17618 12677 31 3 0
1000 syz-executor5
[ 1271] 0 1271 17585 8230 25 4 0
1000 syz-executor3
[ 1280] 0 1280 17618 8233 26 4 0
1000 syz-executor3
[ 1316] 0 1316 17618 12677 31 3 0
1000 syz-executor5
[ 1368] 0 1368 17618 12677 31 3 0
1000 syz-executor5
[ 1417] 0 1417 17651 8236 25 4 0
1000 syz-executor1
[ 1430] 0 1430 17618 12677 31 3 0
1000 syz-executor5
[ 1456] 0 1456 17717 8242 25 4 0
0 syz-executor4
[ 1493] 0 1493 17618 12677 31 3 0
1000 syz-executor5
[ 1574] 0 1574 17618 12677 31 3 0
1000 syz-executor5
[ 1598] 0 1598 17618 12677 31 3 0
1000 syz-executor5
[ 1686] 0 1686 17651 8234 25 4 0
1000 syz-executor3
[ 1707] 0 1707 17618 12677 31 3 0
1000 syz-executor5
[ 1764] 0 1764 17618 12677 31 3 0
1000 syz-executor5
[ 1866] 0 1866 17618 12677 31 3 0
1000 syz-executor5
[ 1899] 0 1899 17651 8234 25 4 0
1000 syz-executor1
[ 1907] 0 1907 17618 12677 31 3 0
1000 syz-executor5
[ 1908] 0 1908 17585 8232 24 3 0
1000 syz-executor2
[ 1918] 0 1918 17651 8239 28 3 0
1000 syz-executor2
[ 1937] 0 1937 17585 8232 24 3 0
1000 syz-executor2
[ 1964] 0 1964 17585 8232 24 3 0
1000 syz-executor2
[ 1979] 0 1979 17585 8232 24 3 0
1000 syz-executor2
[ 1983] 0 1983 17618 12677 31 3 0
1000 syz-executor5
[ 2008] 0 2008 17718 8241 26 4 0
1000 syz-executor1
[ 2057] 0 2057 17618 12677 31 3 0
1000 syz-executor5
[ 2183] 0 2183 17783 8247 31 4 0
0 syz-executor4
[ 2199] 0 2199 17618 12677 31 3 0
1000 syz-executor5
[ 2234] 0 2234 17585 8198 24 3 0
1000 syz-executor3
[ 2248] 0 2248 17717 8206 27 3 0
1000 syz-executor3
[ 2345] 0 2345 17585 8231 26 4 0
1000 syz-executor1
[ 2435] 0 2435 17618 8235 25 4 0
1000 syz-executor1
[ 2452] 0 2452 17684 8241 27 4 0
1000 syz-executor2
[ 2535] 0 2535 17585 8193 23 3 0
0 syz-executor4
[ 2536] 0 2536 17618 8204 24 3 0
0 syz-executor4
[ 2556] 0 2556 17618 12707 31 3 0
1000 syz-executor5
[ 2575] 0 2575 17651 8237 26 4 0
1000 syz-executor2
[ 2625] 0 2625 17585 8199 24 3 0
1000 syz-executor1
[ 2898] 0 2898 17618 8238 26 4 0
0 syz-executor4
[ 3022] 0 3022 17585 8203 24 3 0
0 syz-executor4
[ 3052] 0 3052 17783 8216 24 3 0
0 syz-executor4
[ 3085] 0 3085 17651 8235 25 4 0
1000 syz-executor3
[ 3222] 0 3222 17618 8237 27 4 0
1000 syz-executor2
[ 3227] 0 3227 17618 8237 27 4 0
1000 syz-executor2
[ 3246] 0 3246 17651 8237 26 4 0
1000 syz-executor2
[ 3249] 0 3249 17651 8237 25 3 0
1000 syz-executor2
[ 3263] 0 3263 17651 8237 26 4 0
1000 syz-executor2
[ 3264] 0 3264 17651 8237 25 3 0
1000 syz-executor2
[ 3532] 0 3532 17618 8233 26 4 0
1000 syz-executor3
[ 3637] 0 3637 17651 8240 25 4 0
0 syz-executor4
[ 3641] 0 3641 17583 8230 25 4 0
1000 syz-executor1
[ 3792] 0 3792 17618 12677 31 3 0
1000 syz-executor5
[ 3864] 0 3864 17618 12677 31 3 0
1000 syz-executor5
[ 4057] 0 4057 17585 8200 25 3 0
1000 syz-executor0
[ 4062] 0 4062 17618 8202 25 3 0
1000 syz-executor0
[ 4256] 0 4256 17585 8203 24 3 0
0 syz-executor4
[ 4279] 0 4279 17684 8796 25 3 0
0 syz-executor4
[ 4321] 0 4321 17585 8200 25 3 0
1000 syz-executor1
[ 4343] 0 4343 17684 8206 25 3 0
1000 syz-executor1
[ 4394] 0 4394 17684 8237 27 4 0
1000 syz-executor3
[ 4495] 0 4495 17618 12707 31 3 0
1000 syz-executor5
[ 4723] 0 4723 17618 8238 26 4 0
0 syz-executor4
[ 4725] 0 4725 17618 8238 26 4 0
0 syz-executor4
[ 4786] 0 4786 17618 8232 25 4 0
1000 syz-executor3
[ 4794] 0 4794 17618 8232 25 4 0
1000 syz-executor3
[ 4830] 0 4830 17651 8236 26 4 0
1000 syz-executor0
[ 4846] 0 4846 17618 8239 26 4 0
1000 syz-executor2
[ 4861] 0 4861 17585 8233 26 4 0
1000 syz-executor2
[ 4899] 0 4899 17618 8236 26 3 0
1000 syz-executor2
[ 4903] 0 4903 17651 8238 26 3 0
1000 syz-executor2
[ 4928] 0 4928 17585 8234 26 3 0
1000 syz-executor2
[ 5160] 0 5160 17585 8199 24 3 0
1000 syz-executor1
[ 5180] 0 5180 17618 8207 25 3 0
0 syz-executor4
[ 5226] 0 5226 17585 8234 25 3 0
1000 syz-executor2
[ 5232] 0 5232 17618 8236 25 3 0
1000 syz-executor2
[ 5396] 0 5396 17618 8206 25 3 0
0 syz-executor4
[ 5422] 0 5422 17684 8205 25 3 0
1000 syz-executor3
[ 5655] 0 5655 17618 8206 25 3 0
0 syz-executor4
[ 5806] 0 5806 17618 8206 25 3 0
0 syz-executor4
[ 5834] 0 5834 17585 8204 25 3 0
0 syz-executor4
[ 5848] 0 5848 17618 8232 25 4 0
1000 syz-executor3
[ 5915] 0 5915 17618 8203 24 3 0
1000 syz-executor1
[ 5930] 0 5930 17684 8207 24 3 0
1000 syz-executor1
[ 5981] 0 5981 17651 8235 25 4 0
1000 syz-executor1
[ 6001] 0 6001 17618 8235 27 4 0
1000 syz-executor3
[ 6007] 0 6007 17618 8206 25 3 0
0 syz-executor4
[ 6069] 0 6069 17684 8240 27 4 0
1000 syz-executor3
[ 6199] 0 6199 17585 8202 25 3 0
1000 syz-executor1
[ 6204] 0 6204 17651 8208 25 3 0
1000 syz-executor1
[ 6282] 0 6282 17618 8206 25 3 0
0 syz-executor4
[ 6327] 0 6327 17618 8206 25 3 0
0 syz-executor4
[ 6369] 0 6369 17618 8206 25 3 0
0 syz-executor4
[ 6437] 0 6437 17618 8206 25 3 0
0 syz-executor4
[ 6496] 0 6496 17585 8204 25 3 0
0 syz-executor4
[ 6561] 0 6561 17618 8206 25 3 0
0 syz-executor4
[ 6597] 0 6597 17618 8206 25 3 0
0 syz-executor4
[ 6680] 0 6680 17585 8204 25 3 0
1000 syz-executor5
[ 6684] 0 6684 17585 8207 25 3 0
0 syz-executor4
[ 6724] 0 6724 17618 8208 25 3 0
0 syz-executor4
[ 6734] 0 6734 17585 8192 23 3 0
1000 syz-executor1
[ 6905] 0 6905 17618 8208 25 3 0
0 syz-executor4
[ 6906] 0 6906 17651 8240 25 4 0
1000 syz-executor1
[ 6936] 0 6936 17618 12679 31 3 0
1000 syz-executor5
[ 6947] 0 6947 17680 12679 31 3 0
1000 syz-executor5
[ 7103] 0 7103 17651 8240 25 4 0
1000 syz-executor1
[ 7129] 0 7129 17618 8208 25 3 0
0 syz-executor4
[ 7141] 0 7141 17618 8241 26 4 0
1000 syz-executor1
[ 7314] 0 7314 17618 8208 25 3 0
0 syz-executor4
[ 7366] 0 7366 17618 8208 25 3 0
0 syz-executor4
[ 7378] 0 7378 17618 8240 25 4 0
1000 syz-executor1
[ 7382] 0 7382 17618 8240 25 4 0
1000 syz-executor1
[ 7418] 0 7418 17618 8208 25 3 0
0 syz-executor4
[ 7459] 0 7459 17618 8208 25 3 0
0 syz-executor4
[ 7602] 0 7602 17618 8208 25 3 0
0 syz-executor4
[ 7661] 0 7661 17618 8208 25 3 0
0 syz-executor4
[ 7681] 0 7681 17618 12679 31 3 0
1000 syz-executor5
[ 8195] 0 8195 17651 8242 26 4 0
1000 syz-executor0
[ 8196] 0 8196 17651 8242 26 4 0
1000 syz-executor0
[ 8307] 0 8307 5384 187 14 3 0
-1000 udevd
[ 8465] 0 8465 17618 8211 25 3 0
0 syz-executor4
[ 8544] 0 8544 17618 8211 25 3 0
0 syz-executor4
[ 8573] 0 8573 17618 8208 25 3 0
1000 syz-executor5
[ 8577] 0 8577 17585 8209 25 3 0
0 syz-executor4
[ 8685] 0 8685 5384 187 14 3 0
-1000 udevd
[ 8755] 0 8755 17651 8383 26 4 0
1000 syz-executor0
[ 8815] 0 8815 17585 8217 25 3 0
1000 syz-executor0
[ 8816] 0 8816 17618 8223 25 3 0
0 syz-executor4
[ 8818] 0 8818 17618 8219 25 3 0
1000 syz-executor0
[ 8940] 0 8940 17585 8373 25 4 0
1000 syz-executor1
[ 9005] 0 9005 17618 8375 25 4 0
1000 syz-executor1
[ 9257] 0 9257 17618 8412 26 4 0
1000 syz-executor0
[ 9279] 0 9279 17713 17687 40 4 0
0 syz-executor4
[ 9299] 0 9299 17783 8396 33 4 0
1000 syz-executor0
[ 9318] 0 9318 101 1 5 3 0
0 modprobe
[ 9319] 0 9319 1576 20 9 3 0
0 modprobe
[ 9320] 0 9320 1539 12 6 3 0
0 modprobe
[ 9321] 0 9321 1576 20 9 3 0
0 modprobe
[ 9325] 0 9325 1576 21 9 3 0
0 modprobe
[ 9326] 0 9326 1576 20 9 3 0
0 modprobe
[ 9328] 0 9328 635 9 6 3 0
0 modprobe
[ 9329] 0 9329 1576 20 9 3 0
0 modprobe
[ 9331] 0 9331 1576 21 8 3 0
0 modprobe
[ 9334] 0 9334 1547 12 8 3 0
0 modprobe
[ 9335] 0 9335 1547 13 7 3 0
0 modprobe
[ 9337] 0 9337 1576 21 9 3 0
0 modprobe
CPU: 1 PID: 9318 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
SYSC_faccessat fs/open.c:394 [inline]
SyS_faccessat+0x20d/0x660 fs/open.c:362
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7fd4ad02d267
RSP: 002b:00007ffe6f500628 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 0000561f084865c1 RCX: 00007fd4ad02d267
RDX: 00000000000033ef RSI: 0000000000000000 RDI: 00007fd4ad0312e6
RBP: 00007fd4ad230000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 00007fd4ad2381c8
R13: 00007fd4ad230718 R14: 00000000000033ef R15: 00007fd4ad238570
Out of memory: Kill process 10425 (syz-executor1) score 1007 or sacrifice
child
Killed process 10425 (syz-executor1) total-vm:70720kB, anon-rss:18312kB,
file-rss:32640kB, shmem-rss:0kB
CPU: 1 PID: 9329 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_fstatat include/linux/fs.h:3088 [inline]
SYSC_newfstatat fs/stat.c:364 [inline]
SyS_newfstatat+0x89/0x100 fs/stat.c:358
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7fe72a00be1a
RSP: 002b:00007ffc04ca1b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007fe72a2d7471 RCX: 00007fe72a00be1a
RDX: 00007ffc04ca1cb0 RSI: 00007ffc04ca1d53 RDI: 0000000000000000
RBP: 00007fe72a4dc2e8 R08: 0000000000000000 R09: 7665646266080028
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc04ca1d40
R13: 00007ffc04ca1d53 R14: 000055fcb9e551a0 R15: 00055facc785c680
CPU: 1 PID: 9319 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_stat include/linux/fs.h:3077 [inline]
SYSC_newstat fs/stat.c:337 [inline]
SyS_newstat+0x81/0xf0 fs/stat.c:333
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7ff6b2c93c65
RSP: 002b:00007ffddad2a878 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 00007ff6b2f5f481 RCX: 00007ff6b2c93c65
RDX: 00007ffddad2a970 RSI: 00007ffddad2a970 RDI: 00007ff6b2f5f481
RBP: 00007ff6b31642f0 R08: 00007ff6b2f4aef8 R09: 00007ff6b2ce7070
R10: 0000000000000000 R11: 0000000000000246 R12: 000056252ae03160
R13: 00007ffddad2aaa3 R14: 0000000000000010 R15: 00055facc785c680
CPU: 1 PID: 9325 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_fstatat include/linux/fs.h:3088 [inline]
SYSC_newfstatat fs/stat.c:364 [inline]
SyS_newfstatat+0x89/0x100 fs/stat.c:358
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f7afb061e1a
RSP: 002b:00007fff17adfa98 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007f7afb32d471 RCX: 00007f7afb061e1a
RDX: 00007fff17adfc20 RSI: 00007fff17adfcc3 RDI: 0000000000000000
RBP: 00007f7afb5322e8 R08: 0000000000000000 R09: 7665646266080028
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff17adfcb0
R13: 00007fff17adfcc3 R14: 0000560c512b91a0 R15: 00055facc785c680
CPU: 1 PID: 1776 Comm: syz-fuzzer Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
__page_cache_alloc include/linux/pagemap.h:226 [inline]
page_cache_read mm/filemap.c:2286 [inline]
filemap_fault+0xcdd/0x14a0 mm/filemap.c:2470
ext4_filemap_fault+0x7d/0xb0 fs/ext4/inode.c:6179
__do_fault+0x80/0x210 mm/memory.c:3194
do_read_fault mm/memory.c:3604 [inline]
do_fault mm/memory.c:3730 [inline]
handle_pte_fault mm/memory.c:3960 [inline]
__handle_mm_fault+0x991/0x25f0 mm/memory.c:4084
handle_mm_fault+0x2f2/0x6eb mm/memory.c:4121
__do_page_fault+0x45d/0xb60 arch/x86/mm/fault.c:1425
page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1104
RIP: 0020:0x13
RSP: 0001:000000c420031f38 EFLAGS: 00000001
CPU: 1 PID: 9326 Comm: modprobe Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_slab_page mm/slub.c:1437 [inline]
allocate_slab mm/slub.c:1588 [inline]
new_slab+0x3c0/0x470 mm/slub.c:1651
new_slab_objects mm/slub.c:2434 [inline]
___slab_alloc.constprop.35+0x2e2/0x480 mm/slub.c:2586
__slab_alloc.isra.26.constprop.34+0x4b/0x90 mm/slub.c:2626
slab_alloc_node mm/slub.c:2689 [inline]
slab_alloc mm/slub.c:2731 [inline]
kmem_cache_alloc+0x19e/0x2b0 mm/slub.c:2736
getname_flags+0xc4/0x540 fs/namei.c:138
user_path_at_empty+0x28/0x80 fs/namei.c:2652
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_stat include/linux/fs.h:3077 [inline]
SYSC_newstat fs/stat.c:337 [inline]
SyS_newstat+0x81/0xf0 fs/stat.c:333
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f810d837c65
RSP: 002b:00007ffde73cb3c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 00007f810db03471 RCX: 00007f810d837c65
RDX: 00007ffde73cb4c0 RSI: 00007ffde73cb4c0 RDI: 00007f810db03471
RBP: 00007f810dd082e8 R08: 2b37382e34312e34 R09: 00007ffde73cc512
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 1626 Comm: rs:main Q:Reg Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
__page_cache_alloc include/linux/pagemap.h:226 [inline]
page_cache_read mm/filemap.c:2286 [inline]
filemap_fault+0xcdd/0x14a0 mm/filemap.c:2470
ext4_filemap_fault+0x7d/0xb0 fs/ext4/inode.c:6179
__do_fault+0x80/0x210 mm/memory.c:3194
do_read_fault mm/memory.c:3604 [inline]
do_fault mm/memory.c:3730 [inline]
handle_pte_fault mm/memory.c:3960 [inline]
__handle_mm_fault+0x991/0x25f0 mm/memory.c:4084
handle_mm_fault+0x2f2/0x6eb mm/memory.c:4121
__do_page_fault+0x45d/0xb60 arch/x86/mm/fault.c:1425
page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1104
RIP: 0000:0x5
RSP: 867fa0:0000000000868140 EFLAGS: 008cc950
CPU: 1 PID: 1628 Comm: rsyslogd Not tainted 4.14.87+ #21
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
warn_alloc.cold.35+0x9d/0x1b7 mm/page_alloc.c:3260
__alloc_pages_slowpath mm/page_alloc.c:4000 [inline]
__alloc_pages_nodemask+0x1425/0x2280 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
__page_cache_alloc include/linux/pagemap.h:226 [inline]
page_cache_read mm/filemap.c:2286 [inline]
filemap_fault+0xcdd/0x14a0 mm/filemap.c:2470
ext4_filemap_fault+0x7d/0xb0 fs/ext4/inode.c:6179
__do_fault+0x80/0x210 mm/memory.c:3194
do_read_fault mm/memory.c:3604 [inline]
do_fault mm/memory.c:3730 [inline]
handle_pte_fault mm/memory.c:3960 [inline]
__handle_mm_fault+0x991/0x25f0 mm/memory.c:4084
handle_mm_fault+0x2f2/0x6eb mm/memory.c:4121
__do_page_fault+0x45d/0xb60 arch/x86/mm/fault.c:1425
page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1104
RIP: 95b5b5a3:0xdb
RSP: 94325d10:00007f1694325d00 EFLAGS: 00000001
Free swap = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315641 pages reserved
oom_reaper: reaped process 10425 (syz-executor1), now anon-rss:0kB,
file-rss:0kB, shmem-rss:0kB
lowmem_reserve[]: 0 0 0
DMA32: 140*4kB (UMH) 265*8kB (UMH) 917*16kB (UEH) 70*32kB (UMEH) 0*64kB
2*128kB (H) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 19848kB
Normal: 915*4kB (UMEH) 88*8kB (UMEH) 112*16kB (UMEH) 50*32kB (UMEH) 21*64kB
(ME) 13*128kB (ME) 12*256kB (ME) 8*512kB (ME) 1*1024kB (M) 0*2048kB
1*4096kB (M) = 23052kB
10243 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315641 pages reserved
Node 0 active_anon:448340kB inactive_anon:5297624kB active_file:13852kB
inactive_file:4328kB unevictable:37948kB isolated(anon):0kB
isolated(file):128kB mapped:225632kB dirty:0kB writeback:0kB shmem:3404kB
writeback_tmp:0kB unstable:0kB all_unreclaimable? no
DMA32 free:19756kB min:4684kB low:7692kB high:10700kB active_anon:30288kB
inactive_anon:2810928kB active_file:4100kB inactive_file:584kB
unevictable:13704kB writepending:0kB present:3145324kB managed:3012120kB
mlocked:13740kB kernel_stack:13440kB pagetables:35940kB bounce:0kB
free_pcp:664kB local_pcp:664kB free_cma:0kB
lowmem_reserve[]: 0 3505 3505
Normal free:22664kB min:5588kB low:9176kB high:12764kB active_anon:418052kB
inactive_anon:2486696kB active_file:9268kB inactive_file:4192kB
unevictable:24544kB writepending:0kB present:4718592kB managed:3589232kB
mlocked:24204kB kernel_stack:16192kB pagetables:53708kB bounce:0kB
free_pcp:712kB local_pcp:712kB free_cma:0kB
lowmem_reserve[]: 0 0 0
DMA32: 140*4kB (UMH) 265*8kB (UMH) 917*16kB (UEH) 70*32kB (UMEH) 0*64kB
2*128kB (H) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 19848kB
Normal: 915*4kB (UMEH) 88*8kB (UMEH) 112*16kB (UMEH) 51*32kB (UMEH) 21*64kB
(ME) 13*128kB (ME) 12*256kB (ME) 8*512kB (ME) 1*1024kB (M) 0*2048kB
1*4096kB (M) = 23084kB
10243 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315641 pages reserved
warn_alloc_show_mem: 8 callbacks suppressed
Mem-Info:
active_anon:112083 inactive_anon:1319884 isolated_anon:0
active_file:3594 inactive_file:1008 isolated_file:32
unevictable:9362 dirty:0 writeback:0 unstable:0
slab_reclaimable:6530 slab_unreclaimable:69179
mapped:54054 shmem:851 pagetables:22341 bounce:0
free:15327 free_pcp:339 free_cma:0
Node 0 active_anon:448332kB inactive_anon:5279536kB active_file:14376kB
inactive_file:4032kB unevictable:37448kB isolated(anon):0kB
isolated(file):128kB mapped:216216kB dirty:0kB writeback:0kB shmem:3404kB
writeback_tmp:0kB unstable:0kB all_unreclaimable? no
DMA32 free:33892kB min:4684kB low:7692kB high:10700kB active_anon:30288kB
inactive_anon:2797172kB active_file:4348kB inactive_file:188kB
unevictable:13692kB writepending:0kB present:3145324kB managed:3012120kB
mlocked:13444kB kernel_stack:13408kB pagetables:35888kB bounce:0kB
free_pcp:640kB local_pcp:640kB free_cma:0kB
lowmem_reserve[]: 0 3505 3505
Normal free:27416kB min:5588kB low:9176kB high:12764kB active_anon:418044kB
inactive_anon:2482364kB active_file:10028kB inactive_file:3844kB
unevictable:23756kB writepending:0kB present:4718592kB managed:3589232kB
mlocked:23700kB kernel_stack:16160kB pagetables:53476kB bounce:0kB
free_pcp:716kB local_pcp:716kB free_cma:0kB
lowmem_reserve[]: 0 0 0
DMA32: 1261*4kB (UMH) 756*8kB (UMH) 1115*16kB (UMEH) 125*32kB (UMEH)
11*64kB (UM) 2*128kB (H) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB =
33892kB
Normal: 1726*4kB (UMEH) 126*8kB (UMEH) 113*16kB (UMEH) 53*32kB (UMEH)
20*64kB (ME) 13*128kB (ME) 15*256kB (ME) 8*512kB (ME) 1*1024kB (M) 0*2048kB
1*4096kB (M) = 27416kB
10191 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
315641 pages reserved
NMI backtrace for cpu 0
CPU: 0 PID: 25 Comm: writeback Not tainted 4.14.87+ #21
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x171/0x1bf kernel/rcu/tree.c:1396
print_other_cpu_stall kernel/rcu/tree.c:1485 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3382 [inline]
rcu_pending kernel/rcu/tree.c:3444 [inline]
rcu_check_callbacks.cold.56+0x7a5/0xd99 kernel/rcu/tree.c:2784
update_process_times+0x24/0x60 kernel/time/timer.c:1588
tick_sched_handle.isra.8+0x73/0x150 kernel/time/tick-sched.c:161
tick_sched_timer+0x7e/0x160 kernel/time/tick-sched.c:1321
__run_hrtimer kernel/time/hrtimer.c:1259 [inline]
__hrtimer_run_queues+0x2d0/0xc10 kernel/time/hrtimer.c:1323
hrtimer_interrupt+0x19a/0x440 kernel/time/hrtimer.c:1357
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
smp_apic_timer_interrupt+0x13a/0x600 arch/x86/kernel/apic/apic.c:1062
apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778
[inline]
RIP: 0010:lock_acquire+0x15c/0x380 kernel/locking/lockdep.c:3994
RSP: 0018:ffff8881da137b88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000007 RBX: 0000000000000246 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8881da128830 RDI: 0000000000000246
RBP: ffff8881da128000 R08: 00000000000031b2 R09: ffffffff8cae5570
R10: ffff8881da128830 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xf5/0x1480 kernel/locking/mutex.c:893
worker_detach_from_pool+0x32/0x2a0 kernel/workqueue.c:1731
rescuer_thread+0x64b/0xd10 kernel/workqueue.c:2392
kthread+0x348/0x420 kernel/kthread.c:232
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
---
This bug is generated by a bot. It may contain errors.
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syzbot
Jun 10, 2019, 1:23:04 PM6/10/19
to syzkaller-a...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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