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nwf
referenced
this pull request
in nwf/xv6-public
Sep 8, 2016
This was caused by 19f6541's move to holding ptable.lock across the entirety of process creation; we need to drop it for the complex call chains inside the filesystem. (gdb) info threads Id Target Id Frame * 1 Thread 1 (CPU#0 [running]) acquire (lk=0x80111a00 <icache>) at spinlock.c:32 2 Thread 2 (CPU#1 [running]) acquire (lk=0x80113120 <ptable>) at spinlock.c:32 (gdb) bt #0 acquire (lk=0x80111a00 <icache>) at spinlock.c:32 #1 0x80101c14 in idup (ip=0x80111a34 <icache+52>) at fs.c:262 #2 0x80104042 in fork () at proc.c:161 #3 0x80104db9 in syscall () at syscall.c:132 #4 0x80105dd9 in trap (tf=0x8dfbefb4) at trap.c:49 #5 0x80105bcb in alltraps () at trapasm.S:23 #6 0x8dfbefb4 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 2 [Switching to thread 2 (Thread 2)] #0 acquire (lk=0x80113120 <ptable>) at spinlock.c:32 32 while(xchg(&lk->locked, 1) != 0) (gdb) bt #0 acquire (lk=0x80113120 <ptable>) at spinlock.c:32 #1 0x80104574 in wakeup (chan=0x80111a34 <icache+52>) at proc.c:413 #2 0x80101d74 in iunlock (ip=0x80111a34 <icache+52>) at fs.c:310 #3 0x801023dd in namex (path=<optimized out>, nameiparent=1, name=0x8dfbcf12 "p0") at fs.c:627 #4 0x80104e1f in create (path=<optimized out>, type=type@entry=2, major=major@entry=0, minor=0) at sysfile.c:245 #5 0x80105614 in sys_open () at sysfile.c:297 #6 0x80104db9 in syscall () at syscall.c:132 #7 0x80105dd9 in trap (tf=0x8dfbcfb4) at trap.c:49 #8 0x80105bcb in alltraps () at trapasm.S:23 #9 0x8dfbcfb4 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?)
nwf
referenced
this pull request
in nwf/xv6-public
Sep 8, 2016
This was caused by 19f6541's move to holding ptable.lock across the entirety of process creation; we need to drop it for the complex call chains inside the filesystem. (gdb) info threads Id Target Id Frame * 1 Thread 1 (CPU#0 [running]) acquire (lk=0x80111a00 <icache>) at spinlock.c:32 2 Thread 2 (CPU#1 [running]) acquire (lk=0x80113120 <ptable>) at spinlock.c:32 (gdb) bt #0 acquire (lk=0x80111a00 <icache>) at spinlock.c:32 #1 0x80101c14 in idup (ip=0x80111a34 <icache+52>) at fs.c:262 #2 0x80104042 in fork () at proc.c:161 #3 0x80104db9 in syscall () at syscall.c:132 #4 0x80105dd9 in trap (tf=0x8dfbefb4) at trap.c:49 #5 0x80105bcb in alltraps () at trapasm.S:23 #6 0x8dfbefb4 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) thread 2 [Switching to thread 2 (Thread 2)] #0 acquire (lk=0x80113120 <ptable>) at spinlock.c:32 32 while(xchg(&lk->locked, 1) != 0) (gdb) bt #0 acquire (lk=0x80113120 <ptable>) at spinlock.c:32 #1 0x80104574 in wakeup (chan=0x80111a34 <icache+52>) at proc.c:413 #2 0x80101d74 in iunlock (ip=0x80111a34 <icache+52>) at fs.c:310 #3 0x801023dd in namex (path=<optimized out>, nameiparent=1, name=0x8dfbcf12 "p0") at fs.c:627 #4 0x80104e1f in create (path=<optimized out>, type=type@entry=2, major=major@entry=0, minor=0) at sysfile.c:245 #5 0x80105614 in sys_open () at sysfile.c:297 #6 0x80104db9 in syscall () at syscall.c:132 #7 0x80105dd9 in trap (tf=0x8dfbcfb4) at trap.c:49 #8 0x80105bcb in alltraps () at trapasm.S:23 #9 0x8dfbcfb4 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?)
hutianyi003
referenced
this pull request
in hutianyi003/xv6-public
Jun 16, 2018
jafemm
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Jun 17, 2019
heptagon-nmt
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Sep 14, 2022
Update URL for 2014
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