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Re: backend crash on DELETE, reproducible locally

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On Thu, Nov 01, 2018 at 03:42:57PM +0100, Karsten Hilbert wrote:

> Will attempt to get a stack trace ...

Meanwhile, in case it helps, an strace of the crash.

	epoll_wait(7, [{EPOLLIN, {u32=47607120, u64=35184419695952}}], 1, -1) = 1
	recv(13, "Q\0\0\0`DELETE FROM ref.auto_hint W"..., 8192, 0) = 97
	gettimeofday({tv_sec=1541084179, tv_usec=197395}, NULL) = 0
	gettimeofday({tv_sec=1541084179, tv_usec=197442}, NULL) = 0
	write(2, "2018-11-01 14:56:19 GMT LOG:  00"..., 209) = 209
	_llseek(45, 0, [16384], SEEK_END)       = 0
	_llseek(47, 0, [16384], SEEK_END)       = 0
	_llseek(48, 0, [16384], SEEK_END)       = 0
	_llseek(49, 0, [16384], SEEK_END)       = 0
	_llseek(45, 0, [16384], SEEK_END)       = 0
	kill(10377, SIGUSR1)                    = 0
	_llseek(45, 0, [0], SEEK_SET)           = 0
	read(45, "\0\0\0\0\234\270\246F\10\373\0\0D\0x\n\0 \4 I\337\1\0\0\236\0\4\0\200\1\0"..., 8192) = 8192
	_llseek(43, 81920, [81920], SEEK_SET)   = 0
	read(43, "\0\0\0\0x{pF8o\0\0\264\1\34\33\360\37\4 \0\0\0\0\344\237\30\0\330\237\30\0"..., 8192) = 8192
	_llseek(44, 925696, [925696], SEEK_SET) = 0
	read(44, "\0\0\0\0\310\324\231FE\231\1\0L\0l\1\0 \4 \0\0\0\0\24\234\326\7<\231\254\5"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/139695", O_RDWR|O_LARGEFILE) = 56
	read(56, "\0\0\0\0\350\347\220E`B\0\0<\0\360\37\360\37\4 \0\0\0\0b1\5\0\3\0\0\0"..., 8192) = 8192
	read(56, "\0\0\0\0h\347\220E\1,\0\0(\0\300\37\360\37\4 \0\0\0\0\344\237\30\0\330\237\30\0"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/2612", O_RDWR|O_LARGEFILE) = 57
	read(57, "\0\0\0\0\200\334s\1a\6\4\0(\0@\36\0 \4 \0\0\0\0\220\237\340\0 \237\340\0"..., 8192) = 8192
	_llseek(43, 65536, [65536], SEEK_SET)   = 0
	read(43, "\0\0\0\0\214e^F\215w\0\0H\7`\n\360\37\4 \0\0\0\0x\212\30\0\344\237\30\0"..., 8192) = 8192
	_llseek(44, 606208, [606208], SEEK_SET) = 0
	read(44, "\0\0\0\0\20\206\237FVP\1\0p\0\230\3\0 \4 \361\360\1\0000\237\232\1T\236\266\1"..., 8192) = 8192
	stat64("/usr/lib/postgresql/11/lib/plpgsql", 0xbfbda4ec) = -1 ENOENT (No such file or directory)
	stat64("/usr/lib/postgresql/11/lib/plpgsql.so", {st_mode=S_IFREG|0644, st_size=197944, ...}) = 0
	stat64("/usr/lib/postgresql/11/lib/plpgsql.so", {st_mode=S_IFREG|0644, st_size=197944, ...}) = 0
	futex(0xb78b904c, FUTEX_WAKE_PRIVATE, 2147483647) = 0
	openat(AT_FDCWD, "/usr/lib/postgresql/11/lib/plpgsql.so", O_RDONLY|O_CLOEXEC) = 58
	read(58, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300a\0\0004\0\0\0"..., 512) = 512
	fstat64(58, {st_mode=S_IFREG|0644, st_size=197944, ...}) = 0
	mmap2(NULL, 201108, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 58, 0) = 0xb293f000
	mmap2(0xb2944000, 102400, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 58, 0x5000) = 0xb2944000
	mmap2(0xb295d000, 69632, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 58, 0x1e000) = 0xb295d000
	mmap2(0xb296e000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 58, 0x2e000) = 0xb296e000
	close(58)                               = 0
	mprotect(0xb296e000, 8192, PROT_READ)   = 0
	openat(AT_FDCWD, "global/139651", O_RDWR|O_LARGEFILE) = 58
	read(58, "\0\0\0\0\320\200zE\324\16\0\0<\0\360\37\360\37\4 \0\0\0\0b1\5\0\3\0\0\0"..., 8192) = 8192
	read(58, "\0\0\0\0P\200zE.+\0\0\320\0\310\35\360\37\4 \0\0\0\0\344\237\30\0\330\237\30\0"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/139719", O_RDWR|O_LARGEFILE) = 59
	read(59, "\0\0\0\0x\347\232E\226s\0\0<\0\360\37\360\37\4 \0\0\0\0b1\5\0\3\0\0\0"..., 8192) = 8192
	read(59, "\0\0\0\0l\250\16F\22\340\0\0h\0\0\37\360\37\4 \0\0\0\0\344\237\30\0\330\237\30\0"..., 8192) = 8192
	read(42, "\0\0\0\0`\235^\1\177\242\4\0\320\0\30\1\0 \4 \0\0\0\0T\237X\1\250\236X\1"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/139606", O_RDWR|O_LARGEFILE) = 60
	read(60, "\0\0\0\0\244E{F\206q\0\0<\0\360\37\360\37\4 \0\0\0\0b1\5\0\3\0\0\0"..., 8192) = 8192
	_llseek(60, 24576, [24576], SEEK_SET)   = 0
	read(60, "\0\0\0\0\224\272wE\re\0\0008\0\20\37\360\37\4 \0\0\0\0\350\237\20\0\320\2370\0"..., 8192) = 8192
	read(60, "\0\0\0\0tD{F\34S\0\0\220\3\324\6\360\37\4 \0\0\0\0t\2078\0\300\237`\0"..., 8192) = 8192
	brk(0x2e07000)                          = 0x2e07000
	_llseek(41, 32768, [32768], SEEK_SET)   = 0
	read(41, "\0\0\0\0\320B{F\23I\0\0\230\6p\f\360\37\4 \0\0\0\0p\214\30\0\344\237\30\0"..., 8192) = 8192
	_llseek(42, 335872, [335872], SEEK_SET) = 0
	read(42, "\0\0\0\0 \"|FB\177\5\0\340\0\320\7\0 \4 Z\362\1\0\0\0\0\0\0\0\0\0"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/139666", O_RDWR|O_LARGEFILE) = 61
	read(61, "\0\0\0\0\244\326\212E\354\30\0\0<\0\360\37\360\37\4 \0\0\0\0b1\5\0\3\0\0\0"..., 8192) = 8192
	_llseek(61, 24576, [24576], SEEK_SET)   = 0
	read(61, "\0\0\0\0$\326\212E\217\235\0\0\220\0`\31\360\37\4 \0\0\0\0\350\237\20\0\254\237x\0"..., 8192) = 8192
	_llseek(61, 8192, [8192], SEEK_SET)     = 0
	read(61, "\0\0\0\0008\365XF\253\246\0\0\30\2\214\3\360\37\4 \0\0\0\0000\205x\0\270\237p\0"..., 8192) = 8192
	read(43, "\0\0\0\0H>mFL\204\0\0D\7l\n\360\37\4 \0\0\0\0\344\237\30\0\330\237\30\0"..., 8192) = 8192
	brk(0x2e29000)                          = 0x2e29000
	_llseek(31, 40960, [40960], SEEK_SET)   = 0
	read(31, "\0\0\0\0\270\244.F}8\0\0\220\1\354\22\360\37\4 \0\0\0\0\320\237@\0\254\237H\0"..., 8192) = 8192
	_llseek(16, 2605056, [2605056], SEEK_SET) = 0
	read(16, "\0\0\0\0\304\347\220FX\37\5\0\10\1d\7\0 \4 \0\0\0\0\0\0\0\0\0\0\0\0"..., 8192) = 8192
	read(33, "\0\0\0\0\230x\375<b\341\0\0\204\0\240\1\0 \4 \0\0\0\0\364\235\30\4<\235j\1"..., 8192) = 8192
	_llseek(34, 98304, [98304], SEEK_SET)   = 0
	read(34, "\0\0\0\0<\214vF\266\210\0\0\204\1\260\r\360\37\4 \0\0\0\0\250\237\220\0t\237h\0"..., 8192) = 8192
	_llseek(35, 253952, [253952], SEEK_SET) = 0
	read(35, "\0\0\0\0\304\35\240F\367\6\5\0x\0|\0\0 \4 \347\360\1\0\0\0\0\0\3\0\1\0"..., 8192) = 8192
	_llseek(35, 1187840, [1187840], SEEK_SET) = 0
	read(35, "\0\0\0\0\314=\240F\2\203\5\0\224\0\324\0\0 \4 \352\344\1\0T\227\376\4\0\0\0\0"..., 8192) = 8192
	_llseek(35, 1122304, [1122304], SEEK_SET) = 0
	read(35, "\0\0\0\0\\\\\240Fm\252\5\0H\0\0\2\0 \4 \0\0\0\0\200\235\374\4\0\233\374\4"..., 8192) = 8192
	_llseek(35, 450560, [450560], SEEK_SET) = 0
	read(35, "\0\0\0\0\360e\240FO\212\5\0\204\0008\27\0 \4 \347\360\1\0\0\0\0\0\4\0\1\0"..., 8192) = 8192
	_llseek(44, 73728, [73728], SEEK_SET)   = 0
	read(44, "\0\0\0\0\330\206d\1\35\252\4\0\310\0\4\1\0 \4 \0\0\0\0P\237^\1\240\236`\1"..., 8192) = 8192
	_llseek(43, 32768, [32768], SEEK_SET)   = 0
	read(43, "\0\0\0\0\214\311\206E\"\331\0\0@\7x\n\360\37\4 \0\0\0\0x\212\30\0\344\237\30\0"..., 8192) = 8192
	_llseek(44, 188416, [188416], SEEK_SET) = 0
	read(44, "\0\0\0\0`'f\1/4\4\0\304\0\360\0\0 \4 \0\0\0\0L\237h\1\230\236h\1"..., 8192) = 8192
	_llseek(23, 49152, [49152], SEEK_SET)   = 0
	read(23, "\0\0\0\0$\236.F*Q\0\0\374\3D\24\360\37\4 \0\0\0\0\344\237\30\0\330\237\30\0"..., 8192) = 8192
	_llseek(24, 73728, [73728], SEEK_SET)   = 0
	read(24, "\0\0\0\0\244\34\203E\314\225\0\0\324\5\0\t\360\37\4 \0\0\0\0\0\211 \0\340\237 \0"..., 8192) = 8192
	_llseek(16, 417792, [417792], SEEK_SET) = 0
	read(16, "\0\0\0\0\234\5\210F\2474\5\0\30\1\34\4\0 \4 \0\0\0\0t\237\30\1\350\236\30\1"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/139770", O_RDWR|O_LARGEFILE) = 62
	read(62, "\0\0\0\0P_\277E\233!\0\0<\0\360\37\360\37\4 \0\0\0\0b1\5\0\3\0\0\0"..., 8192) = 8192
	read(62, "\0\0\0\0\320^\277E/S\0\0\224\2|\30\360\37\4 \0\0\0\0\344\237\30\0\330\237\30\0"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/2224", O_RDWR|O_LARGEFILE) = 63
	read(63, "\0\0\0\0\270s\330<\311\265\1\0\34\3x\6\0 \4 -\250\1\0\2\0\1\0\264\237\222\0"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/90709", O_RDWR|O_LARGEFILE) = 64
	read(64, "\0\0\0\0Tf\240F\375\242\0\0\34\0\320\37\374\37\4 \0\0\0\0\320\237R\0\0\0\0\0"..., 8192) = 8192
	_llseek(43, 16384, [16384], SEEK_SET)   = 0
	read(43, "\0\0\0\0|\254\206EW\310\0\0@\7x\n\360\37\4 \0\0\0\0x\212\30\0\344\237\30\0"..., 8192) = 8192
	_llseek(44, 131072, [131072], SEEK_SET) = 0
	read(44, "\0\0\0\0\344Fe\1\305\372\4\0\300\0\f\1\0 \4 \0\0\0\0D\237r\1\210\236r\1"..., 8192) = 8192
	_llseek(43, 40960, [40960], SEEK_SET)   = 0
	read(43, "\0\0\0\0\234\346\206E\245\361\0\0@\7x\n\360\37\4 \0\0\0\0x\212\30\0\344\237\30\0"..., 8192) = 8192
	_llseek(44, 147456, [147456], SEEK_SET) = 0
	read(44, "\0\0\0\0\360\206e\1\r\331\4\0\274\0H\1\0 \4 \0\0\0\0P\237`\1\210\236\216\1"..., 8192) = 8192
	gettimeofday({tv_sec=1541084179, tv_usec=208768}, NULL) = 0
	gettimeofday({tv_sec=1541084179, tv_usec=208829}, NULL) = 0
	openat(AT_FDCWD, "base/139580/111805_fsm", O_RDWR|O_LARGEFILE) = -1 ENOENT (No such file or directory)
	openat(AT_FDCWD, "base/139580/111805", O_RDWR|O_LARGEFILE) = 65
	_llseek(65, 0, [8192], SEEK_END)        = 0
	_llseek(65, 0, [0], SEEK_SET)           = 0
	read(65, "\0\0\0\0hs\240FT.\0\0(\0L\23\0 \4 \0\0\0\0\224\234\330\6\374\231*\5"..., 8192) = 8192
	read(45, "\0\0\0\0\274\324\246F^a\0\0,\0T\4\0 \4 \0\0\0\0,\231\244\r@\221\330\17"..., 8192) = 8192
	openat(AT_FDCWD, "base/139580/139675", O_RDWR|O_LARGEFILE) = 66
	read(66, "\0\0\0\0\274\264/F\4\214\0\0<\0\360\37\360\37\4 \0\0\0\0b1\5\0\3\0\0\0"..., 8192) = 8192
	_llseek(66, 24576, [24576], SEEK_SET)   = 0
	read(66, "\0\0\0\0d^uF\2\250\0\0000\0\254\37\360\37\4 \0\0\0\0\350\237\20\0\304\237\30\0"..., 8192) = 8192
	_llseek(66, 49152, [49152], SEEK_SET)   = 0
	read(66, "\0\0\0\0t\264/F\247\n\0\0\f\3\24\27\360\37\4 \0\0\0\0\344\237\30\0\330\237\30\0"..., 8192) = 8192
	_llseek(35, 114688, [114688], SEEK_SET) = 0
	read(35, "\0\0\0\0\204\241\240F\376\212\5\0\230\0\34\17\0 \4 \347\360\1\0\0\0\0\0d\2378\1"..., 8192) = 8192
	_llseek(24, 303104, [303104], SEEK_SET) = 0
	read(24, "\0\0\0\0\220\213\207F5\241\0\0\\\3\340\22\360\37\4 \0\0\0\0\340\222 \0\340\237 \0"..., 8192) = 8192
	_llseek(16, 2834432, [2834432], SEEK_SET) = 0
	read(16, "\0\0\0\0\370\226\221F\305\271\5\0\f\1\f\17\0 \4 \371\360\1\0t\237\30\1\350\236\30\1"..., 8192) = 8192
	_llseek(33, 352256, [352256], SEEK_SET) = 0
	read(33, "\0\0\0\0\320WKC\3462\0\0\200\0D\7\0 \4 \0\0\0\0\360\235\32\0048\235j\1"..., 8192) = 8192
	_llseek(34, 65536, [65536], SEEK_SET)   = 0
	read(34, "\0\0\0\0h\266vFx\34\0\0\220\0\200\31\360\37\4 \0\0\0\0\250\237\220\0t\237h\0"..., 8192) = 8192
	_llseek(35, 1064960, [1064960], SEEK_SET) = 0
	read(35, "\0\0\0\0\304a\33F\16\340\5\0H\0\360\1\0 \4 \0\0\0\0|\235\4\5\370\232\4\5"..., 8192) = 8192
	_llseek(35, 122880, [122880], SEEK_SET) = 0
	read(35, "\0\0\0\0p\274/FnR\5\0x\0\220\26\0 \4 \347\360\1\0\5\0\1\0\0\0\0\0"..., 8192) = 8192
	_llseek(35, 49152, [49152], SEEK_SET)   = 0
	read(35, "\0\0\0\0`IrF\236\337\1\0t\0$\33\0 \4 \347\360\1\0\0\0\0\0d\2378\1"..., 8192) = 8192
	_llseek(35, 40960, [40960], SEEK_SET)   = 0
	read(35, "\0\0\0\0\234\304vF\267\306\1\0\310\0\364\7\0 \4 \347\360\1\0|\231\n\1\364\230\n\1"..., 8192) = 8192
	_llseek(35, 73728, [73728], SEEK_SET)   = 0
	read(35, "\0\0\0\0004\215xF\277l\0\0\204\0\200\10\0 \4 \347\360\1\0\0\200\1\0\0\200\1\0"..., 8192) = 8192
	_llseek(36, 106496, [106496], SEEK_SET) = 0
	read(36, "\0\0\0\0|\n\224F\252V\0\0\\\0\334\34\360\37\4 \0\0\0\0\254\237\210\0|\237`\0"..., 8192) = 8192
	_llseek(37, 376832, [376832], SEEK_SET) = 0
	read(37, "\0\0\0\0\20\310vFmN\5\0\350\0\304\30\0 \4 \0\0\0\0\20\237\332\1\0\236 \2"..., 8192) = 8192
	--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x10} ---
	+++ killed by SIGSEGV +++

Karsten Hilbert
-- 
GPG  40BE 5B0E C98E 1713 AFA6  5BC0 3BEA AC80 7D4F C89B




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