Re: kern/50182

[Swift Griggs <swiftgriggs%gmail.com@localhost>]

The following reply was made to PR kern/50182; it has been noted by GNATS.

From: Swift Griggs <swiftgriggs%gmail.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/50182
Date: Mon, 2 Nov 2015 09:03:18 -0700 (MST)

 Here is more information:
 
 * It's still a problem with NetBSD 7.0 (i386 and AMD64 both seem to crash 
 but I only have the backtrace from i386).
 
 Here is the 'dmesg' from the crash:
 
 uvm_fault(0xc0ff0d00, 0x62756000, 1) -> 0xe
 fatal page fault in supervisor mode
 trap type 6 code 0 eip c09f2e0f cs 8 eflags 210246 cr2 62756877 ilevel 0 
 esp c4bf0324
 curlwp 0xc4b73d20 pid 0 lid 38 lowest kstack 0xdc1242c0
 panic: trap
 cpu0: Begin traceback...
 vpanic(c0dc7a1b,dc125e84,dc125f00,c096ad3a,c0dc7a1b,dc125f0c,dc125f0c,26,dc1242c0,210246) 
 at netbsd:vpanic+0x121
 snprintf(c0dc7a1b,dc125f0c,dc125f0c,26,dc1242c0,210246,62756877,0,c4bf0324,c0fa6d20) 
 at netbsd:snprintf
 trap_tss() at netbsd:trap_tss
 --- trap via task gate ---
 c4bf0324:
 cpu0: End traceback...
 
 dumping to dev 0,1 offset 2968
 dump
 
 
 Here is the backtrace from the core:
 
 # gdb netbsd.1
 ...
 (gdb) target kvm netbsd.1.core
 0xc06cdf06 in cpu_reboot ()
 (gdb) bt
 #0  0xc06cdf06 in cpu_reboot ()
 #1  0xc0918752 in vpanic ()
 #2  0xc09187dc in panic ()
 #3  0xc096ad3a in trap ()
 #4  0xc010ce78 in alltraps ()
 #5  0xdc125f0c in end ()
 #6  0xc0650010 in execve_runproc ()
 #7  0xc09ee48c in usb_task_thread ()
 #8  0xc0100321 in lwp_trampoline ()
 
 and another from another core:
 
 (gdb) bt
 #0  0xc06cdf06 in cpu_reboot ()
 #1  0xc0918752 in vpanic ()
 #2  0xc09187dc in panic ()
 #3  0xc096ad3a in trap ()
 #4  0xc010ce78 in alltraps ()
 #5  0xdd99fbe0 in ?? ()
 #6  0xc0300082 in ehci_allocm ()
 #7  0xc09f2123 in usbd_transfer ()
 #8  0xc09f248c in usbd_open_pipe_intr ()
 #9  0xc09c525c in uhidev_open ()
 #10 0xc09e7ec4 in ums_enable ()
 #11 0xc0a6965a in wsmuxopen ()
 #12 0xc090b40d in cdev_open ()
 #13 0xc08f4125 in spec_open ()
 #14 0xc0a474e4 in VOP_OPEN ()
 #15 0xc0a31d04 in vn_open ()
 #16 0xc0a2b23d in do_open ()
 #17 0xc0a2b37c in do_sys_openat ()
 #18 0xc0a2b442 in sys_open ()
 #19 0xc093ccff in syscall ()
 #20 0xc010055d in Xsyscall ()
 #21 0xdd99ffa8 in ?? ()
 Backtrace stopped: previous frame inner to this frame (corrupt stack?)
 
 Thanks!
    Swift