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Re: ERLITE frozen in rc script after switching to GCC 5.4
On 2016/10/21 19:34, Martin Husemann wrote:
I can reproduce your issue!
Minimal instance:
kern.module.path=/stand/evbmips/7.99.40/modules
WARNING: no TOD clock present
WARNING: using filesystem time
WARNING: CHECK AND RESET THE DATE!
init: copying out path `/sbin/init' 11
pid 1(init): ABI set to N32 (e_flags=0x20000027)
Fri Oct 21 10:32:24 GMT 2016
(hangs here...)
and I can't break into ddb.
Yeah, this is what I meant.
I tried a kernel compiled with "-O0" flag, and observed a completely
reproducible panic:
pid 1(init): ABI set to N32 (e_flags=0x20000027)
pid 4(sh): trap: cpu0, address error (load or I-fetch) in kernel mode
status=0x80ff83, cause=0x10, epc=0xffffffff80252484, vaddr=0x1520000000352
tf=0x980000041096fc20 ksp=0x980000041096fd60 ra=0xffffffff80252370 ppl=0x98000004
kernel: address error (load or I-fetch) trap
Stopped in pid 4.1 (sh) at netbsd:syscall+0x6f0: lhu v0,850(v0)
I therefore added "-DMIPS_SYSCALL_DEBUG" to CFLAGS, then another
reproducible panic occurs:
pid 1(init): ABI set to N32 (e_flags=0x20000027)
syscall 197: [0]=0 [1]=0x8000 [2]=0x3 [3]=0x1002 [4]=0xffffffffffffffff [5]=0 [6]=0
...(snip)...
syscall 197: return v0=0x78770000 v1=0xffffffffffffffff
pid 0(system): trap: cpu0, TLB miss (load or instr. fetch) in kernel mode
status=0xffa3, cause=0x8, epc=0xffffffff8046d534, vaddr=0
tf=0x980000041093bc50 ksp=0x980000041093bd90 ra=0xffffffff80457bd8 ppl=0xffffffff
kernel: TLB miss (load or instr. fetch) trap
Stopped in pid 0.28 (system) at netbsd:callout_halt+0x24: lw v1,48(v0)
These results indicate that the problem does not simply come from the
optimization errors nor mips/syscall.c. Now I'm worried if there are
much more serious regressions in GCC5 than I imagined.
I attached "ps" and "bt" from DDB besides full debug messages.
Thanks,
Rin
====
######################################################################
# kernel compiled with "-O0"
######################################################################
pid 1(init): ABI set to N32 (e_flags=0x20000027)
pid 4(sh): trap: cpu0, address error (load or I-fetch) in kernel mode
status=0x80ff83, cause=0x10, epc=0xffffffff80252484, vaddr=0x1520000000352
tf=0x980000041096fc20 ksp=0x980000041096fd60 ra=0xffffffff80252370 ppl=0x98000004
kernel: address error (load or I-fetch) trap
Stopped in pid 4.1 (sh) at netbsd:syscall+0x6f0: lhu v0,850(v0)
db> ps
PID LID S CPU FLAGS STRUCT LWP * NAME WAIT
5 1 3 0 0 ffffffff8feb4080 sysctl netio
4 > 1 7 0 0 ffffffff8feb44c0 sh
3 1 3 0 80 ffffffff8feb4900 sh pipe_rd
2 1 3 0 80 ffffffff8ff28060 sh pipe_rd
1 1 3 0 80 ffffffff8ff299e0 init wait
0 41 3 0 200 ffffffff8feb4d40 aiodoned aiodoned
0 40 3 0 200 ffffffff8feb5180 ioflush syncer
0 39 3 0 200 ffffffff8feb55c0 pgdaemon pgdaemon
0 38 5 0 200 ffffffff8feb5a00 (zombie)
0 36 3 0 200 ffffffff8ff284a0 nfsio nfsiod
0 35 3 0 200 ffffffff8ff288e0 nfsio nfsiod
0 34 3 0 200 ffffffff8ff308c0 nfsio nfsiod
0 33 3 0 200 ffffffff8ff30480 nfsio nfsiod
0 31 3 0 200 ffffffff8ff30d00 scsibus0 sccomp
0 30 3 0 200 ffffffff8ff30040 usb0 usbevt
0 29 3 0 200 ffffffff8ff295a0 unpgc unpgc
0 28 3 0 200 ffffffff8ff29160 rt_timer rt_timer
0 27 3 0 200 ffffffff8ff28d20 vmem_rehash vmem_rehash
0 18 3 0 200 ffffffff8ff31140 usbtask-dr usbtsk
0 17 3 0 200 ffffffff8ff31580 usbtask-hc usbtsk
0 16 3 0 200 ffffffff8ff319c0 dwc2 dwc2
0 15 3 0 200 ffffffff8ff64020 pmfsuspend pmfsuspend
0 14 3 0 200 ffffffff8ff64460 pmfevent pmfevent
0 13 3 0 200 ffffffff8ff648a0 sopendfree sopendfr
0 12 3 0 200 ffffffff8ff64ce0 nfssilly nfssilly
0 11 3 0 200 ffffffff8ff65120 cachegc cachegc
0 10 3 0 200 ffffffff8ff65560 vrele vrele
0 9 3 0 200 ffffffff8ff659a0 vdrain vdrain
0 8 3 0 200 ffffffff8ff76000 modunload mod_unld
0 7 3 0 200 ffffffff8ff76440 xcall/0 xcall
0 6 1 0 200 ffffffff8ff76880 softser/0
0 5 1 0 200 ffffffff8ff76cc0 softclk/0
0 4 1 0 200 ffffffff8ff77100 softbio/0
0 3 1 0 200 ffffffff8ff77540 softnet/0
0 2 1 0 201 ffffffff8ff77980 idle/0
0 1 3 0 200 ffffffff80682820 swapper uvm
db> bt
0x980000041096fd60: syscall+6f0 (ffffffff8ffd9f80,ffffffff8ffd9f80,ffffffff8feb44c0,0) ra 92 sz 320
PC 0x92: not in kernel space
0x980000041096fea0: 0+92 (ffffffff8ffd9f80,ffffffff8ffd9f80,ffffffff8feb44c0,0) ra 0 sz 0
User-level: pid 4.1
db>
######################################################################
# kernel compiled with "-O0 -DMIPS_SYSCALL_DEBUG"
######################################################################
pid 1(init): ABI set to N32 (e_flags=0x20000027)
syscall 197: [0]=0 [1]=0x8000 [2]=0x3 [3]=0x1002 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x787c8000 v1=0x1fff
syscall 5: [0]=0x787dfbd0 [1]=0 [2]=0x787f4754
syscall 5: return error=2
syscall 5: [0]=0x7fff6700 [1]=0 [2]=0
syscall 5: return v0=0 v1=0x787cc000
syscall 440: [0]=0 [1]=0x7fff6620
syscall 440: return v0=0 v1=0x787cc000
syscall 197: [0]=0 [1]=0x2000 [2]=0x1 [3]=0x1 [4]=0 [5]=0 [6]=0
syscall 197: return v0=0x787f6000 v1=0x7fff6701
syscall 73: [0]=0x787f6000 [1]=0x2000
syscall 73: return v0=0 v1=0x16000
syscall 197: [0]=0 [1]=0x2c000 [2]=0x5 [3]=0x10000002 [4]=0 [5]=0 [6]=0
syscall 197: return v0=0x78790000 v1=0x16000
syscall 197: [0]=0x787b4000 [1]=0x6000 [2]=0x3 [3]=0x12 [4]=0 [5]=0 [6]=0x14000
syscall 197: return v0=0x787b4000 v1=0x16000
syscall 197: [0]=0x787ba000 [1]=0x2000 [2]=0x3 [3]=0x1012 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x787ba000 v1=0xffffffffffffffff
syscall 74: [0]=0x787a6000 [1]=0xe000 [2]=0
syscall 74: return v0=0 v1=0x16000
syscall 6: [0]=0
syscall 6: return v0=0 v1=0x34
syscall 5: [0]=0x7fff6700 [1]=0 [2]=0
syscall 5: return v0=0 v1=0x787cc000
syscall 440: [0]=0 [1]=0x7fff6620
syscall 440: return v0=0 v1=0x787cc000
syscall 197: [0]=0 [1]=0x2000 [2]=0x1 [3]=0x1 [4]=0 [5]=0 [6]=0
syscall 197: return v0=0x787f6000 v1=0x7fff6701
syscall 73: [0]=0x787f6000 [1]=0x2000
syscall 73: return v0=0 v1=0x6000
syscall 197: [0]=0 [1]=0x1a000 [2]=0x5 [3]=0x10000002 [4]=0 [5]=0 [6]=0
syscall 197: return v0=0x78770000 v1=0x6000
syscall 197: [0]=0x78786000 [1]=0x2000 [2]=0x3 [3]=0x12 [4]=0 [5]=0 [6]=0x6000
syscall 197: return v0=0x78786000 v1=0x6000
syscall 197: [0]=0x78788000 [1]=0x2000 [2]=0x3 [3]=0x1012 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x78788000 v1=0xffffffffffffffff
syscall 74: [0]=0x78776000 [1]=0x10000 [2]=0
syscall 74: return v0=0 v1=0x6000
syscall 6: [0]=0
syscall 6: return v0=0 v1=0x34
syscall 5: [0]=0x7fff6700 [1]=0 [2]=0
syscall 5: return v0=0 v1=0x787cc000
syscall 440: [0]=0 [1]=0x7fff6620
syscall 440: return v0=0 v1=0x787cc000
syscall 197: [0]=0 [1]=0x2000 [2]=0x1 [3]=0x1 [4]=0 [5]=0 [6]=0
syscall 197: return v0=0x787f6000 v1=0x7fff6701
syscall 73: [0]=0x787f6000 [1]=0x2000
syscall 73: return v0=0 v1=0x16c000
syscall 197: [0]=0 [1]=0x1c2000 [2]=0x5 [3]=0x10000002 [4]=0 [5]=0 [6]=0
syscall 197: return v0=0x785a0000 v1=0x16c000
syscall 197: [0]=0x7871a000 [1]=0x36000 [2]=0x3 [3]=0x12 [4]=0 [5]=0 [6]=0x16a000
syscall 197: return v0=0x7871a000 v1=0x16c000
syscall 197: [0]=0x78750000 [1]=0x12000 [2]=0x3 [3]=0x1012 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x78750000 v1=0xffffffffffffffff
syscall 74: [0]=0x7870c000 [1]=0xe000 [2]=0
syscall 74: return v0=0 v1=0x16c000
syscall 6: [0]=0
syscall 6: return v0=0 v1=0x34
syscall 197: [0]=0 [1]=0xa000 [2]=0x3 [3]=0x1002 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x787be000 v1=0x1fff
syscall 317: [0]=0x787c7008
syscall 317: return v0=0 v1=0x1
syscall 311: <no args>
syscall 311: return v0=0x1 v1=0xf5233e9
syscall 293: [0]=0x1 [1]=0x7fff6e00 [2]=0x7fff6e70
syscall 293: return v0=0 v1=0xffffffffffffffff
syscall 293: [0]=0x3 [1]=0x7fff6e70 [2]=0
syscall 293: return v0=0 v1=0x400000
syscall 202: [0]=0x786f5460 [1]=0x2 [2]=0x787550b0 [3]=0x7fff6d60 [4]=0 [5]=0
syscall 202: return v0=0 v1=0x1
syscall 311: <no args>
syscall 311: return v0=0x1 v1=0x78756350
syscall 293: [0]=0x1 [1]=0x7fff6d70 [2]=0x7fff6e70
syscall 293: return v0=0 v1=0xffffffffffffffff
syscall 293: [0]=0x3 [1]=0x7fff6e70 [2]=0
syscall 293: return v0=0 v1=0x6c18000
syscall 311: <no args>
syscall 311: return v0=0x1 v1=0
syscall 293: [0]=0x1 [1]=0x7fff6d70 [2]=0x7fff6e70
syscall 293: return v0=0 v1=0xffffffffffffffff
syscall 293: [0]=0x3 [1]=0x7fff6e70 [2]=0
syscall 293: return v0=0 v1=0x6c18000
syscall 311: <no args>
syscall 311: return v0=0x1 v1=0
syscall 293: [0]=0x1 [1]=0x7fff6d70 [2]=0x7fff6e70
syscall 293: return v0=0 v1=0xffffffffffffffff
syscall 293: [0]=0x3 [1]=0x7fff6e70 [2]=0
syscall 293: return v0=0 v1=0x787ca2bc
syscall 418: [0]=0x28510 [1]=0
syscall 418: return v0=0 v1=0x17
syscall 24: <no args>
syscall 24: return v0=0 v1=0x17
syscall 20: <no args>
syscall 20: return v0=0x1 v1=0x17
syscall 147: <no args>
syscall 147: return v0=0x1 v1=0x17
syscall 50: [0]=0x16f70
syscall 50: return v0=0 v1=0x17
syscall 33: [0]=0x16f58 [1]=0
syscall 33: return v0=0 v1=0x17
syscall 340: [0]=0xc [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x17
syscall 340: [0]=0x6 [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x6
syscall 340: [0]=0x8 [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x8
syscall 340: [0]=0x4 [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x4
syscall 340: [0]=0xb [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0xb
syscall 340: [0]=0xa [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0xa
syscall 340: [0]=0x18 [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x18
syscall 340: [0]=0x19 [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x19
syscall 340: [0]=0x1 [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x1
syscall 340: [0]=0xf [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0xf
syscall 340: [0]=0x12 [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x12
syscall 340: [0]=0xe [1]=0x7fff6dc0 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0xe
syscall 293: [0]=0x3 [1]=0x7fff6e88 [2]=0
syscall 293: return v0=0 v1=0x17
syscall 340: [0]=0x15 [1]=0x7fff6e70 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x17
syscall 340: [0]=0x16 [1]=0x7fff6e70 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x17
syscall 6: [0]=0
syscall 6: return error=9
syscall 6: [0]=0x1
syscall 6: return error=9
syscall 6: [0]=0x2
syscall 6: return error=9
syscall 202: [0]=0x7fff6de0 [1]=0x1 [2]=0x7fff6d80 [3]=0x7fff6de8 [4]=0x7fff6d80 [5]=0x60
syscall 202: return v0=0 v1=0x8
syscall 202: [0]=0x7fff6de0 [1]=0x2 [2]=0 [3]=0 [4]=0x7fff6d80 [5]=0x60
syscall 202: return v0=0 v1=0x8
syscall 202: [0]=0x7fff6e98 [1]=0x2 [2]=0x7fff6ea4 [3]=0x7fff6ea0 [4]=0 [5]=0
syscall 202: return v0=0 v1=0x8
syscall 2: <no args>
syscall 2: return v0=0x2 v1=0
syscall 449: [0]=0xffffffffffffffff [1]=0x7fff6d38 [2]=0x2 [3]=0
syscall 340: [0]=0x12 [1]=0x7fff6d20 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x78756350
syscall 340: [0]=0x1 [1]=0x7fff6d20 [2]=0 [3]=0x786512b0 [4]=0x2
syscall 340: return v0=0 v1=0x78756350
syscall 56: [0]=0x16f58
syscall 56: return v0=0 v1=0x17
syscall 430: [0]=0x173d8 [1]=0
syscall 430: return v0=0 v1=0x17
syscall 5: [0]=0x16f58 [1]=0x2 [2]=0
syscall 5: return v0=0 v1=0x17
syscall 147: <no args>
syscall 147: return v0=0x2 v1=0x10
syscall 54: [0]=0 [1]=0x20007461 [2]=0
syscall 54: return v0=0 v1=0x10
syscall 90: [0]=0 [1]=0
syscall 90: return v0=0 v1=0x10
syscall 90: [0]=0 [1]=0x1
syscall 90: return v0=0x1 v1=0x10
syscall 90: [0]=0 [1]=0x2
syscall 90: return v0=0x2 v1=0x10
syscall 293: [0]=0x3 [1]=0x7fff6d24 [2]=0
syscall 293: return v0=0 v1=0
syscall 59: [0]=0x16f40 [1]=0x7fff6d38 [2]=0x7fff6f4c
syscall 197: [0]=0 [1]=0x8000 [2]=0x3 [3]=0x1002 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x787c8000 v1=0x1fff
syscall 5: [0]=0x787dfbd0 [1]=0 [2]=0x787f4754
syscall 5: return error=2
syscall 197: [0]=0 [1]=0xa000 [2]=0x3 [3]=0x1002 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x787be000 v1=0x1fff
syscall 5: [0]=0x7fff66e8 [1]=0 [2]=0
syscall 5: return v0=0x3 v1=0x787cc000
syscall 440: [0]=0x3 [1]=0x7fff6608
syscall 440: return v0=0 v1=0x787cc000
syscall 197: [0]=0 [1]=0x2000 [2]=0x1 [3]=0x1 [4]=0x3 [5]=0 [6]=0
syscall 197: return v0=0x787f6000 v1=0x7fff66e9
syscall 73: [0]=0x787f6000 [1]=0x2000
syscall 73: return v0=0 v1=0x2c000
syscall 197: [0]=0 [1]=0x46000 [2]=0x5 [3]=0x10000002 [4]=0x3 [5]=0 [6]=0
syscall 197: return v0=0x78770000 v1=0x2c000
syscall 197: [0]=0x787aa000 [1]=0xa000 [2]=0x3 [3]=0x12 [4]=0x3 [5]=0 [6]=0x2a000
syscall 197: return v0=0x787aa000 v1=0x2c000
syscall 197: [0]=0x787b4000 [1]=0x2000 [2]=0x3 [3]=0x1012 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x787b4000 v1=0xffffffffffffffff
syscall 74: [0]=0x7879c000 [1]=0xe000 [2]=0
syscall 74: return v0=0 v1=0x2c000
syscall 6: [0]=0x3
syscall 6: return v0=0 v1=0x34
syscall 5: [0]=0x7fff66e8 [1]=0 [2]=0
syscall 5: return v0=0x3 v1=0x787cc000
syscall 440: [0]=0x3 [1]=0x7fff6608
syscall 440: return v0=0 v1=0x787cc000
syscall 197: [0]=0 [1]=0x2000 [2]=0x1 [3]=0x1 [4]=0x3 [5]=0 [6]=0
syscall 197: return v0=0x787f6000 v1=0x7fff66e9
syscall 73: [0]=0x787f6000 [1]=0x2000
syscall 73: return v0=0 v1=0xe000
syscall 197: [0]=0 [1]=0x20000 [2]=0x5 [3]=0x10000002 [4]=0x3 [5]=0 [6]=0
syscall 197: return v0=0x78750000 v1=0xe000
syscall 197: [0]=0x7876c000 [1]=0x4000 [2]=0x3 [3]=0x12 [4]=0x3 [5]=0 [6]=0xc000
syscall 197: return v0=0x7876c000 v1=0xe000
syscall 197: [0]=0x78770000 [1]=0 [2]=0x3 [3]=0x1012 [4]=0xffffffffffffffff [5]=0 [6]=0
syscall 197: return v0=0x78770000 v1=0xffffffffffffffff
pid 0(system): trap: cpu0, TLB miss (load or instr. fetch) in kernel mode
status=0xffa3, cause=0x8, epc=0xffffffff8046d534, vaddr=0
tf=0x980000041093bc50 ksp=0x980000041093bd90 ra=0xffffffff80457bd8 ppl=0xffffffff
kernel: TLB miss (load or instr. fetch) trap
Stopped in pid 0.28 (system) at netbsd:callout_halt+0x24: lw v1,48(v0)
db> ps
PID LID S CPU FLAGS STRUCT LWP * NAME WAIT
2 1 2 0 0 ffffffff8ff28060 sh
1 1 3 0 80 ffffffff8ff299e0 init wait
0 41 3 0 200 ffffffff8feb4d40 aiodoned aiodoned
0 40 3 0 200 ffffffff8feb5180 ioflush syncer
0 39 3 0 200 ffffffff8feb55c0 pgdaemon pgdaemon
0 38 5 0 200 ffffffff8feb5a00 (zombie)
0 36 3 0 200 ffffffff8ff284a0 nfsio nfsiod
0 35 3 0 200 ffffffff8ff288e0 nfsio nfsiod
0 34 3 0 200 ffffffff8ff308c0 nfsio nfsiod
0 33 3 0 200 ffffffff8ff30480 nfsio nfsiod
0 31 3 0 200 ffffffff8ff30d00 scsibus0 sccomp
0 30 3 0 200 ffffffff8ff30040 usb0 usbevt
0 29 3 0 200 ffffffff8ff295a0 unpgc unpgc
0 > 28 7 0 200 ffffffff8ff29160 rt_timer
0 27 3 0 200 ffffffff8ff28d20 vmem_rehash vmem_rehash
0 18 3 0 200 ffffffff8ff31140 usbtask-dr usbtsk
0 17 3 0 200 ffffffff8ff31580 usbtask-hc usbtsk
0 16 3 0 200 ffffffff8ff319c0 dwc2 dwc2
0 15 3 0 200 ffffffff8ff64020 pmfsuspend pmfsuspend
0 14 3 0 200 ffffffff8ff64460 pmfevent pmfevent
0 13 3 0 200 ffffffff8ff648a0 sopendfree sopendfr
0 12 3 0 200 ffffffff8ff64ce0 nfssilly nfssilly
0 11 3 0 200 ffffffff8ff65120 cachegc cachegc
0 10 3 0 200 ffffffff8ff65560 vrele vrele
0 9 3 0 200 ffffffff8ff659a0 vdrain vdrain
0 8 3 0 200 ffffffff8ff76000 modunload mod_unld
0 7 3 0 200 ffffffff8ff76440 xcall/0 xcall
0 6 1 0 200 ffffffff8ff76880 softser/0
0 5 1 0 200 ffffffff8ff76cc0 softclk/0
0 4 1 0 200 ffffffff8ff77100 softbio/0
0 3 1 0 200 ffffffff8ff77540 softnet/0
0 2 1 0 201 ffffffff8ff77980 idle/0
0 1 3 0 200 ffffffff80682b20 swapper uvm
db> bt
0x980000041093bd90: callout_halt+24 (140,0,0,ffffffff80678940) ra ffffffff80457bd8 sz 80
0x980000041093bde0: sleepq_block+178 (140,0,0,ffffffff80678940) ra 1 sz 80
PC 0x1: not in kernel space
0x980000041093be30: 0+1 (140,0,0,ffffffff80678940) ra 0 sz 0
User-level: pid 0.28
db>
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