Date: Tue, 12 May 2020 19:30:03 +0200 From: freebsd@sysctl.cz To: Konstantin Belousov <kostikbel@gmail.com> Cc: freebsd-hackers@freebsd.org, Freebsd emulation <freebsd-emulation@freebsd.org>, owner-freebsd-hackers@freebsd.org Subject: Re: Debug linux binary with enable linux emulation Message-ID: <8599c3e63190d7b69c9cc7afde61caf4@sysctl.cz> In-Reply-To: <67eed7f18b68f67ff04f628c4c367535@sysctl.cz> References: <24f30eaa0597d79ddadc10d6f993f2a0@sysctl.cz> <20200511115656.GF68906@kib.kiev.ua> <67eed7f18b68f67ff04f628c4c367535@sysctl.cz>
next in thread | previous in thread | raw e-mail | index | archive | help
Dne 2020-05-12 00:49, freebsd@sysctl.cz napsal: > Dne 2020-05-11 13:56, Konstantin Belousov napsal: >> On Mon, May 11, 2020 at 12:28:23AM +0200, freebsd@sysctl.cz wrote: >>> Hi, >>> I tried debug with gdb for linux emulation >>> and have issue with kernel panic. >>> >>> kldload linux64.ko >>> gdb ./Discord or other linux binary >>> >>> Fatal trap 12: page fault while in kernel mode >>> cpuid = 3; apic id = 03 >>> fault virtual address = 0x18 >>> fault code = supervisor read data, page not present >>> instruction pointer = 0x20:0xffffffff82f5b682 >>> stack pointer = 0x28:0xfffffe00691fd980 >>> frame pointer = 0x28:0xfffffe00691fd9e0 >>> code segment = base 0x0, limit 0xfffff, type 0x1b >>> = DPL 0, pres 1, long 1, def32 0, gran 1 >>> processor eflags = interrupt enabled, resume, IOPL = 0 >>> current process = 17392 (fish) >>> trap number = 12 >>> panic: page fault >>> cpuid = 3 >>> time = 1589132677 >>> KDB: stack backtrace: >>> #0 0xffffffff80c1d2f7 at kdb_backtrace+0x67 >>> #1 0xffffffff80bd062d at vpanic+0x19d >>> #2 0xffffffff80bd0483 at panic+0x43 >>> #3 0xffffffff810a7dcc at trap_fatal+0x39c >>> #4 0xffffffff810a7e19 at trap_pfault+0x49 >>> #5 0xffffffff810a740f at trap+0x29f >>> #6 0xffffffff81081bdc at calltrap+0x8 >>> #7 0xffffffff82f503d1 at linux_thread_detach+0x21 >> Show the line number for linux_thread_detach+0x21. >> Or better, compile with INVARIANTS, it should fire an assertion. >> Then get a core dump. >> >>> #8 0xffffffff80be5acf at thread_suspend_check+0x41f >>> #9 0xffffffff80c32ed9 at ast+0x3b9 >>> #10 0xffffffff810850e9 at doreti_ast+0x1f >>> Uptime: 2h56m24s >>> Dumping 1146 out of 8042 >>> MB:..2%..12%..21%..31%..41%..51%..62%..72%..81%..91%---<<BOOT>>--- >>> Copyright (c) 1992-2019 The FreeBSD Project. >>> >>> GNU gdb (GDB) 9.1 [GDB v9.1 for FreeBSD] >>> Copyright (C) 2020 Free Software Foundation, Inc. >>> License GPLv3+: GNU GPL version 3 or later >>> <http://gnu.org/licenses/gpl.html>; >>> This is free software: you are free to change and redistribute it. >>> There is NO WARRANTY, to the extent permitted by law. >>> Type "show copying" and "show warranty" for details. >>> This GDB was configured as "x86_64-portbld-freebsd12.1". >>> Type "show configuration" for configuration details. >>> For bug reporting instructions, please see: >>> <http://www.gnu.org/software/gdb/bugs/>. >>> Find the GDB manual and other documentation resources online at: >>> <http://www.gnu.org/software/gdb/documentation/>. >>> >>> For help, type "help". >>> Type "apropos word" to search for commands related to "word"... >>> Reading symbols from /boot/kernel/kernel... >>> (No debugging symbols found in /boot/kernel/kernel) >>> 0xffffffff80c01eda in sched_switch () >>> (kgdb) >>> (kgdb) >>> (kgdb) bt >>> #0 0xffffffff80c01eda in sched_switch () >>> #1 0xffffffff80bdbfa2 in mi_switch () >>> #2 0xffffffff80c2bb75 in sleepq_catch_signals () >>> #3 0xffffffff80c2be64 in sleepq_timedwait_sig () >>> #4 0xffffffff80bdb9a5 in _sleep () >>> #5 0xffffffff80bf1ee3 in umtxq_sleep () >>> #6 0xffffffff80bf1c90 in do_wait () >>> #7 0xffffffff80bef8fe in __umtx_op_wait_uint_private () >>> #8 0xffffffff810a8984 in amd64_syscall () >>> #9 <signal handler called> >>> #10 0x000000080974dedc in ?? () >>> Backtrace stopped: Cannot access memory at address 0x7fffffffddc8 >>> >>> I have now kernel without debug symbols. >>> >>> M. >>> _______________________________________________ >>> freebsd-emulation@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-emulation >>> To unsubscribe, send any mail to >>> "freebsd-emulation-unsubscribe@freebsd.org" >> _______________________________________________ >> freebsd-hackers@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-hackers >> To unsubscribe, send any mail to >> "freebsd-hackers-unsubscribe@freebsd.org" > > > > Hi konstantin, > I have good news, now we can look detail > > (kgdb) bt > #0 __curthread () at /usr/src/sys/amd64/include/pcpu.h:234 > #1 doadump (textdump=<optimized out>) at > /usr/src/sys/kern/kern_shutdown.c:371 > #2 0xffffffff80bd0228 in kern_reboot (howto=260) at > /usr/src/sys/kern/kern_shutdown.c:451 > #3 0xffffffff80bd0689 in vpanic (fmt=<optimized out>, ap=<optimized > out>) at /usr/src/sys/kern/kern_shutdown.c:877 > #4 0xffffffff80bd0483 in panic (fmt=<unavailable>) at > /usr/src/sys/kern/kern_shutdown.c:804 > #5 0xffffffff810a7dcc in trap_fatal (frame=0xfffffe00634e58c0, > eva=24) at /usr/src/sys/amd64/amd64/trap.c:943 > #6 0xffffffff810a7e19 in trap_pfault (frame=0xfffffe00634e58c0, > usermode=0) at /usr/src/sys/amd64/amd64/trap.c:767 > #7 0xffffffff810a740f in trap (frame=0xfffffe00634e58c0) at > /usr/src/sys/amd64/amd64/trap.c:443 > #8 <signal handler called> > #9 release_futexes (td=<optimized out>, em=0x0) at > /usr/src/sys/compat/linux/linux_futex.c:1283 > #10 0xffffffff82f503d1 in linux_thread_detach (td=0xfffff8014bd935e0) > at /usr/src/sys/compat/linux/linux_fork.c:466 > #11 0xffffffff80be5acf in thread_suspend_check (return_instead=0) at > /usr/src/sys/kern/kern_thread.c:1010 > #12 0xffffffff80c32ed9 in ast (framep=0xfffffe00634e5ac0) at > /usr/src/sys/kern/subr_trap.c:342 > #13 0xffffffff810850e9 in doreti_ast () at > /usr/src/sys/amd64/amd64/exception.S:1149 > #14 0x0000000800bb7008 in ?? () > #15 0x000000000000000f in ?? () > #16 0x0000000000000000 in ?? () > (kgdb) list 0xffffffff82f503d1 > Function "0xffffffff82f503d1" not defined. > (kgdb) list *0xffffffff82f503d1 > 0xffffffff82f503d1 is in linux_thread_detach > (/usr/src/sys/compat/linux/linux_fork.c:468). > warning: Source file is more recent than executable. > 463 > 464 LINUX_CTR1(thread_detach, "thread(%d)", em->em_tid); > 465 > 466 release_futexes(td, em); > 467 > 468 child_clear_tid = em->child_clear_tid; > 469 > 470 if (child_clear_tid != NULL) { > 471 > 472 LINUX_CTR2(thread_detach, "thread(%d) %p", > (kgdb) > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to > "freebsd-hackers-unsubscribe@freebsd.org" Hi Konstantin, do you have any idea with debug this kernel panic ? M.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?8599c3e63190d7b69c9cc7afde61caf4>