report: generate links to source in reports #5

dvyukov · 2015-11-24T09:57:38Z

git.kernel.org provides a way to show a particular source line on particular commit:

https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/tree/net/sctp/sm_sideeffect.c?id=4dd191bb6195641edbc527a8495b7b1b816a41e6#n1097

We could embed such links into reports. Probably work for kasan_symbolize.py script.

dvyukov · 2017-08-12T12:39:41Z

Obsolete

ThreadSanitizer says: WARNING: ThreadSanitizer: data race (pid=3) Atomic read of size 4 at 0x56360e562f08 by main thread: #0 __tsan_atomic32_load <null> (libtsan.so.0+0x64249) #1 event_isset executor/common_linux.h:51 (syz-executor.0+0x2cf1f) #2 handle_completion executor/executor.cc:886 (syz-executor.0+0x2cf1f) #3 execute_one executor/executor.cc:732 (syz-executor.0+0x2da3b) #4 loop executor/common.h:581 (syz-executor.0+0x2f1aa) google#5 do_sandbox_none executor/common_linux.h:2694 (syz-executor.0+0x189d6) google#6 main executor/executor.cc:407 (syz-executor.0+0x189d6) Previous write of size 4 at 0x56360e562f08 by thread T1: #0 event_reset executor/common_linux.h:32 (syz-executor.0+0x1f5af) #1 worker_thread executor/executor.cc:1048 (syz-executor.0+0x1f5af) #2 <null> <null> (libtsan.so.0+0x2b0b6) Location is global 'threads' of size 2560 at 0x56360e562f00 (syz-executor.0+0x00000008bf08) Thread T1 (tid=6, running) created by main thread at: #0 pthread_create <null> (libtsan.so.0+0x2d55b) #1 thread_start executor/common.h:256 (syz-executor.0+0x2d707) #2 thread_create executor/executor.cc:1037 (syz-executor.0+0x2d707) #3 schedule_call executor/executor.cc:811 (syz-executor.0+0x2d707) #4 execute_one executor/executor.cc:719 (syz-executor.0+0x2d707) google#5 loop executor/common.h:581 (syz-executor.0+0x2f1aa) google#6 do_sandbox_none executor/common_linux.h:2694 (syz-executor.0+0x189d6) google#7 main executor/executor.cc:407 (syz-executor.0+0x189d6)

ThreadSanitizer says: WARNING: ThreadSanitizer: data race (pid=3) Atomic read of size 4 at 0x56360e562f08 by main thread: #0 __tsan_atomic32_load <null> (libtsan.so.0+0x64249) #1 event_isset executor/common_linux.h:51 (syz-executor.0+0x2cf1f) #2 handle_completion executor/executor.cc:886 (syz-executor.0+0x2cf1f) #3 execute_one executor/executor.cc:732 (syz-executor.0+0x2da3b) #4 loop executor/common.h:581 (syz-executor.0+0x2f1aa) #5 do_sandbox_none executor/common_linux.h:2694 (syz-executor.0+0x189d6) #6 main executor/executor.cc:407 (syz-executor.0+0x189d6) Previous write of size 4 at 0x56360e562f08 by thread T1: #0 event_reset executor/common_linux.h:32 (syz-executor.0+0x1f5af) #1 worker_thread executor/executor.cc:1048 (syz-executor.0+0x1f5af) #2 <null> <null> (libtsan.so.0+0x2b0b6) Location is global 'threads' of size 2560 at 0x56360e562f00 (syz-executor.0+0x00000008bf08) Thread T1 (tid=6, running) created by main thread at: #0 pthread_create <null> (libtsan.so.0+0x2d55b) #1 thread_start executor/common.h:256 (syz-executor.0+0x2d707) #2 thread_create executor/executor.cc:1037 (syz-executor.0+0x2d707) #3 schedule_call executor/executor.cc:811 (syz-executor.0+0x2d707) #4 execute_one executor/executor.cc:719 (syz-executor.0+0x2d707) #5 loop executor/common.h:581 (syz-executor.0+0x2f1aa) #6 do_sandbox_none executor/common_linux.h:2694 (syz-executor.0+0x189d6) #7 main executor/executor.cc:407 (syz-executor.0+0x189d6)

It seems that different gcc's have different defaults for ASAN flags. Some fail with: run.go:67: nonfailing none/thr/repeat : FAIL: run 0: call 0 is not executed ASAN:DEADLYSIGNAL ================================================================= ==67143==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f7b0befb0a2 bp 0x7f7b0cfdad10 sp 0x7f7b0cfda490 T1) #0 0x7f7b0befb0a1 (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x8d0a1) #1 0x404bbb in syz_compare(long, long, long, long) (/tmp/utor355225125.0+0x404bbb) #2 0x403cdf in execute_call(thread_t*) (/tmp/utor355225125.0+0x403cdf) #3 0x404006 in worker_thread(void*) (/tmp/utor355225125.0+0x404006) #4 0x7f7b0bc584a3 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x74a3) #5 0x7f7b0b99ad0e in __clone (/lib/x86_64-linux-gnu/libc.so.6+0xe8d0e) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x8d0a1) Thread T1 created by T0 here: #0 0x7f7b0be9ef59 in __interceptor_pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x30f59) #1 0x406117 in execute_one() (/tmp/utor355225125.0+0x406117)

disable vhci injection

dvyukov changed the title ~~Generate links to source in reports~~ report: generate links to source in reports May 26, 2017

dvyukov closed this as completed Aug 12, 2017

tnarg999 pushed a commit to tnarg999/syzkaller that referenced this issue Aug 10, 2021

Merge pull request google#5 from tnarg999/vhci

099bd90

disable vhci injection

gkennedy12 mentioned this issue Jul 19, 2022

My branch #3250

Closed

tytso mentioned this issue May 1, 2023

pkg/bisect: bisector treats a GCE "out of resources" as a valid run #3854

Closed

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report: generate links to source in reports #5

report: generate links to source in reports #5

dvyukov commented Nov 24, 2015

dvyukov commented Aug 12, 2017

report: generate links to source in reports #5

report: generate links to source in reports #5

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dvyukov commented Nov 24, 2015

dvyukov commented Aug 12, 2017