Comments (3)
(gdb) bt
#0 __msan_poison_alloca (address=0xffffffff91403640, size=24, descr=0xffffffff91596160 "----c@stack_trace_save") at mm/kmsan/kmsan_instr.c:159
#1 0xffffffff819dfa91 in stack_trace_save (store=store@entry=0xffffffff91403698, size=size@entry=1, skipnr=skipnr@entry=1) at kernel/stacktrace.c:115
#2 0xffffffff82439b11 in kmsan_internal_return_address (arg=-1856413344, arg@entry=1) at mm/kmsan/kmsan.c:509
#3 0xffffffff82439f57 in __msan_poison_alloca (address=0xffffffff91403730, size=24, descr=0xffffffff91596160 "----c@stack_trace_save")
at mm/kmsan/kmsan_instr.c:167
#4 0xffffffff819dfa91 in stack_trace_save (store=store@entry=0xffffffff91403788, size=size@entry=1, skipnr=skipnr@entry=1) at kernel/stacktrace.c:115
#5 0xffffffff82439b11 in kmsan_internal_return_address (arg=-1856413344, arg@entry=1) at mm/kmsan/kmsan.c:509
#6 0xffffffff82439f57 in __msan_poison_alloca (address=0xffffffff91403820, size=24, descr=0xffffffff91596160 "----c@stack_trace_save")
at mm/kmsan/kmsan_instr.c:167
#7 0xffffffff819dfa91 in stack_trace_save (store=store@entry=0xffffffff91403878, size=size@entry=1, skipnr=skipnr@entry=1) at kernel/stacktrace.c:115
#8 0xffffffff82439b11 in kmsan_internal_return_address (arg=-1856413344, arg@entry=1) at mm/kmsan/kmsan.c:509
#9 0xffffffff82439f57 in __msan_poison_alloca (address=0xffffffff91403910, size=24, descr=0xffffffff91596160 "----c@stack_trace_save")
at mm/kmsan/kmsan_instr.c:167
#10 0xffffffff819dfa91 in stack_trace_save (store=store@entry=0xffffffff91403968, size=size@entry=1, skipnr=skipnr@entry=1) at kernel/stacktrace.c:115
#11 0xffffffff82439b11 in kmsan_internal_return_address (arg=-1856413344, arg@entry=1) at mm/kmsan/kmsan.c:509
#12 0xffffffff82439f57 in __msan_poison_alloca (address=0xffffffff91403a88, size=40, descr=0xffffffff915db070 "----ac@__alloc_pages")
at mm/kmsan/kmsan_instr.c:167
#13 0xffffffff822ea600 in __alloc_pages (gfp=73728, order=0, preferred_nid=0, nodemask=0x0 <fixed_percpu_data>) at mm/page_alloc.c:5186
#14 0xffffffff823bfecb in alloc_pages (gfp=gfp@entry=73728, order=order@entry=0) at mm/mempolicy.c:2272
#15 0xffffffff8242a2c4 in alloc_slab_page (flags=73728, node=-1, oo=..., s=<optimized out>) at mm/slub.c:1661
#16 allocate_slab (s=s@entry=0xffff888014832800, flags=0, node=node@entry=-1) at mm/slub.c:1801
#17 0xffffffff8240db0c in new_slab (s=0xffff888014832800, flags=<optimized out>, node=-1) at mm/slub.c:1864
#18 new_slab_objects (s=0xffff888014832800, flags=3520, node=<optimized out>, pc=<optimized out>) at mm/slub.c:2610
#19 ___slab_alloc (s=<optimized out>, s@entry=0x92, gfpflags=gfpflags@entry=3520, node=<optimized out>, node@entry=-1, addr=addr@entry=18446744071591563891,
c=c@entry=0xffff88807fc99350) at mm/slub.c:2773
#20 0xffffffff82410fe6 in __slab_alloc (s=0xffff888014832800, gfpflags=3520, node=-1, addr=18446744071591563891, c=<optimized out>) at mm/slub.c:2813
#21 slab_alloc_node (s=0xffff888014832800, gfpflags=3520, node=-1, addr=0, orig_size=<optimized out>) at mm/slub.c:2895
#22 slab_alloc (s=<optimized out>, gfpflags=3520, addr=<optimized out>, orig_size=<optimized out>) at mm/slub.c:2938
#23 __kmalloc (size=192, flags=3520) at mm/slub.c:4070
#24 0xffffffff81c21273 in kmalloc (size=192, flags=3520) at /usr/local/google/src/clang-kernel-build/kmsan-devel/./include/linux/slab.h:561
#25 kzalloc (size=192, flags=3264) at /usr/local/google/src/clang-kernel-build/kmsan-devel/./include/linux/slab.h:686
#26 __ring_buffer_alloc (size=4096, flags=1, key=0xffffffff939eb69b <tracer_alloc_buffers..key>) at kernel/trace/ring_buffer.c:1720
#27 0xffffffff935e6625 in tracer_alloc_buffers () at kernel/trace/trace.c:9856
#28 0xffffffff935e6330 in early_trace_init () at kernel/trace/trace.c:9946
#29 0xffffffff9353b5e8 in start_kernel () at init/main.c:939
#30 0xffffffff810000f5 in secondary_startup_64 () at arch/x86/kernel/head_64.S:283
#31 0x0000000000000000 in ?? ()
from kmsan.
I'll leave the bug open, because the output of kmsan_internal_return_address()
still differs for ORC and FP unwinders, and one of the tests does not pass. But at least KMSAN doesn't hang anymore.
from kmsan.
Should be fixed now.
from kmsan.
Related Issues (20)
- The return value of 'sscanf()' should be checked HOT 1
- Don't zero out origin of uninitialized bytes in kmsan_internal_set_shadow_origin() HOT 1
- KMSAN must use contiguous shadow for physical pages HOT 1
- Should we override gfp_flags when allocating metadata pages? HOT 1
- recipe for target 'vmlinux' failed? HOT 2
- trim aux frames from stacks HOT 1
- duplicate frame for local var origin HOT 1
- BUG: KMSAN: uninit-value in kmsan_handle_dma HOT 8
- Potential deadlock in stack_depot_save() HOT 1
- Some crypto configs that use asm are not disabled HOT 1
- BUG: NULL pointer dereference in wp_page_copy (kmsan specific) HOT 3
- Compile kmsan with clang-9 with -O2 ERROR HOT 2
- compile KMSAN error HOT 5
- https://www.google.com/webhp?client=ms-android-americamovil-us-revc&source=android-home&gws_rd=ssl
- Security Policy violation Binary Artifacts HOT 15
- can't compile if select KMSAN in ubuntu 2204 HOT 3
- arch/x86/kernel/module.c:230:49: error: call to undeclared library function 'memcpy' HOT 13
- KMSAN doesn't support paravirtualization
- Why do we need to sync metadata in x86_32 page faults? HOT 3
- false-positive bug report likely due to kmsan_percpu_ctx shared between softirq and hardirq context
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from kmsan.