syz-fuzzer cpuset=/ mems_allowed=0
CPU: 1 PID: 6189 Comm: syz-fuzzer Not tainted 4.19.0+ #80
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
==================================================================
BUG: KMSAN: uninit-value in get_stack_info+0x720/0x9d0 arch/x86/kernel/dumpstack_64.c:139
CPU: 1 PID: 6189 Comm: syz-fuzzer Not tainted 4.19.0+ #80
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x419/0x480 lib/dump_stack.c:113
 kmsan_report+0x19f/0x300 mm/kmsan/kmsan.c:911
 __msan_warning+0x76/0xd0 mm/kmsan/kmsan_instr.c:415
 get_stack_info+0x720/0x9d0 arch/x86/kernel/dumpstack_64.c:139
 __unwind_start+0x7d/0xe0 arch/x86/kernel/unwind_frame.c:402
 unwind_start arch/x86/include/asm/unwind.h:54 [inline]
 show_trace_log_lvl+0x20e/0x11e0 arch/x86/kernel/dumpstack.c:173
 show_stack+0x12e/0x170 arch/x86/kernel/dumpstack.c:293
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x32d/0x480 lib/dump_stack.c:113
 dump_header+0x405/0x1e70 mm/oom_kill.c:441
 oom_kill_process+0x435/0x1620 mm/oom_kill.c:953
 out_of_memory+0x18fb/0x1fb0 mm/oom_kill.c:1120
 __alloc_pages_may_oom mm/page_alloc.c:3537 [inline]
 __alloc_pages_slowpath mm/page_alloc.c:4250 [inline]
 __alloc_pages_nodemask+0x5599/0x6640 mm/page_alloc.c:4405
 alloc_pages_current+0x584/0x7e0 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:511 [inline]
 __page_cache_alloc+0xdb/0x4a0 mm/filemap.c:947
 page_cache_read mm/filemap.c:2386 [inline]
 filemap_fault+0x2530/0x2d80 mm/filemap.c:2570
 ext4_filemap_fault+0xbb/0x130 fs/ext4/inode.c:6259
 __do_fault mm/memory.c:3242 [inline]
 do_read_fault mm/memory.c:3654 [inline]
 do_fault mm/memory.c:3754 [inline]
 handle_pte_fault mm/memory.c:3985 [inline]
 __handle_mm_fault mm/memory.c:4109 [inline]
 handle_mm_fault+0x7d3b/0xa560 mm/memory.c:4146
 __do_page_fault+0x10f8/0x1bb0 arch/x86/mm/fault.c:1396
 do_page_fault+0x98/0xd0 arch/x86/mm/fault.c:1473
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1170
RIP: 0033:0x45ddf3
Code: Bad RIP value.
RSP: 002b:000000c42001fea0 EFLAGS: 00010206
RAX: ffffffffffffff92 RBX: 000000003b903c82 RCX: 000000000045ddf3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000014e5a80
RBP: 000000c42001fee8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c42001fed8 R11: 0000000000000206 R12: 0000000000000001
R13: 000000c42bfdad80 R14: 0000000000000001 R15: 0000000000000000

Local variable description: ----state@show_trace_log_lvl
Variable was created at:
 show_trace_log_lvl+0xb3/0x11e0 arch/x86/kernel/dumpstack.c:164
 show_stack+0x12e/0x170 arch/x86/kernel/dumpstack.c:293
==================================================================