name failslab, interval 1, probability 0, space 0, times 1
CPU: 1 PID: 14086 Comm: syz-executor3 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: 14086 Comm: syz-executor3 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
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x11e5/0x13c0 lib/fault-inject.c:149
 __should_failslab+0x278/0x2a0 mm/failslab.c:32
 should_failslab+0x29/0x70 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc_node mm/slub.c:2653 [inline]
 slab_alloc mm/slub.c:2735 [inline]
 kmem_cache_alloc+0x146/0xe20 mm/slub.c:2740
 anon_vma_chain_alloc mm/rmap.c:129 [inline]
 __anon_vma_prepare+0x106/0xdd0 mm/rmap.c:183
 anon_vma_prepare include/linux/rmap.h:153 [inline]
 do_huge_pmd_anonymous_page+0x4ce/0x3070 mm/huge_memory.c:675
 create_huge_pmd mm/memory.c:3876 [inline]
 __handle_mm_fault mm/memory.c:4080 [inline]
 handle_mm_fault+0x5f54/0xa560 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: 0010:__get_user_8+0x21/0x2b arch/x86/lib/getuser.S:93
Code: 1f 00 c3 66 0f 1f 44 00 00 48 83 c0 07 72 25 65 48 8b 14 25 00 fd 02 00 48 3b 82 58 1a 00 00 73 13 48 19 d2 48 21 d0 0f 1f 00 <48> 8b 50 f9 31 c0 0f 1f 00 c3 31 d2 48 c7 c0 f2 ff ff ff 0f 1f 00
RSP: 0018:ffff88011674fe70 EFLAGS: 00010206
RAX: 0000000020000187 RBX: ffff88011674fe78 RCX: 0000000000040000
RDX: ffffffffffffffff RSI: 0000000000000008 RDI: 0000000020000180
RBP: ffff88011674ff00 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff823ca250 R12: 0000000020000180
R13: 0000000000000000 R14: 0000000000000000 R15: ffff880102004588
 __x64_sys_io_setup+0x3e/0x60 fs/aio.c:1285
 do_syscall_64+0xcf/0x110 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457569
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fcc0238ac78 EFLAGS: 00000246 ORIG_RAX: 00000000000000ce
RAX: ffffffffffffffda RBX: 00007fcc0238ac90 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 000000008000000a
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcc0238b6d4
R13: 00000000004be724 R14: 00000000004ce5e8 R15: 0000000000000003

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
==================================================================