Date: Fri, 05 Jun 2020 21:11:24 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 247020] [panic][lixux]: kernel panic in linux_thread_detach at /usr/src/sys/compat/linux/linux_fork.c:462 Message-ID: <bug-247020-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247020 Bug ID: 247020 Summary: [panic][lixux]: kernel panic in linux_thread_detach at /usr/src/sys/compat/linux/linux_fork.c:462 Product: Base System Version: 12.1-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: freebsd@sysctl.cz Hello, when trying to execute linux binary with gdb debug then have kernel panic immediately. kldload linux64 gdb ./linux_binary (gdb) run Unread portion of the kernel message buffer: panic: thread_detach: emuldata not found. cpuid = 6 time = 1591381865 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0075872930 vpanic() at vpanic+0x19d/frame 0xfffffe0075872980 panic() at panic+0x43/frame 0xfffffe00758729e0 linux_thread_detach() at linux_thread_detach+0x9e/frame 0xfffffe0075872a30 thread_suspend_check() at thread_suspend_check+0x318/frame 0xfffffe0075872a70 ast() at ast+0x544/frame 0xfffffe0075872ab0 doreti_ast() at doreti_ast+0x1f/frame 0x7fffdfffdd90 Uptime: 4m46s Dumping 814 out of 8042 MB:..2%..12%..22%..32%..42%..52%..61%..71%..81%..91% __curthread () at /usr/src/sys/amd64/include/pcpu.h:234 234 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (OFFSETOF_CURTHREAD)); (kgdb) bt #0 __curthread () at /usr/src/sys/amd64/include/pcpu.h:234 #1 doadump (textdump=1) at /usr/src/sys/kern/kern_shutdown.c:371 #2 0xffffffff80bb70b0 in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:451 #3 0xffffffff80bb74f9 in vpanic (fmt=<optimized out>, ap=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:877 #4 0xffffffff80bb7263 in panic (fmt=<unavailable>) at /usr/src/sys/kern/kern_shutdown.c:804 #5 0xffffffff82f4e1be in linux_thread_detach (td=0xfffff8017a48c5e0) at /usr/src/sys/compat/linux/linux_fork.c:462 #6 0xffffffff80bcbfa8 in thread_suspend_check (return_instead=0) at /usr/src/sys/kern/kern_thread.c:1010 #7 0xffffffff80c167c4 in ast (framep=0xfffffe0075872ac0) at /usr/src/sys/kern/subr_trap.c:342 #8 0xffffffff810670f9 in doreti_ast () at /usr/src/sys/amd64/amd64/exception.S:1149 #9 0x0000000800bb7008 in ?? () #10 0x000000000000000f in ?? () #11 0x0000000000000000 in ?? () (kgdb) list *0xffffffff82f4e1be 0xffffffff82f4e1be is at /usr/src/sys/compat/linux/linux_fork.c:462. 457 struct linux_emuldata *em; 458 int *child_clear_tid; 459 int error; 460 461 em = em_find(td); 462 KASSERT(em != NULL, ("thread_detach: emuldata not found.\n")); 463 464 LINUX_CTR1(thread_detach, "thread(%d)", em->em_tid); 465 466 release_futexes(td, em); (kgdb) 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", 473 em->em_tid, child_clear_tid); 474 475 error = suword32(child_clear_tid, 0); 476 if (error != 0) (kgdb) list 477 return; 478 479 cup.uaddr = child_clear_tid; 480 cup.op = LINUX_FUTEX_WAKE; 481 cup.val = 1; /* wake one */ 482 cup.timeout = NULL; 483 cup.uaddr2 = NULL; 484 cup.val3 = 0; 485 error = linux_sys_futex(td, &cup); 486 /* -- You are receiving this mail because: You are the assignee for the bug.help
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