name fail_page_alloc, interval 1, probability 0, space 0, times 1
CPU: 0 PID: 10961 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: 0 PID: 10961 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_fail_alloc_page mm/page_alloc.c:3072 [inline]
 prepare_alloc_pages mm/page_alloc.c:4341 [inline]
 __alloc_pages_nodemask+0x6fd/0x6640 mm/page_alloc.c:4379
 alloc_pages_current+0x584/0x7e0 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:511 [inline]
 kmalloc_order mm/slab_common.c:1183 [inline]
 kmalloc_order_trace+0xd9/0x470 mm/slab_common.c:1194
 kmalloc_large include/linux/slab.h:447 [inline]
 __kmalloc+0x4b2/0x4d0 mm/slub.c:3776
 kmalloc_array include/linux/slab.h:635 [inline]
 rw_copy_check_uvector+0x1a4/0x770 fs/read_write.c:781
 import_iovec+0x18b/0x600 lib/iov_iter.c:1534
 vfs_readv fs/read_write.c:984 [inline]
 do_preadv+0x34d/0x5e0 fs/read_write.c:1070
 __do_sys_preadv fs/read_write.c:1120 [inline]
 __se_sys_preadv+0xc6/0xe0 fs/read_write.c:1115
 __x64_sys_preadv+0x62/0x80 fs/read_write.c:1115
 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:00007ff3d3c64c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007ff3d3c64c90 RCX: 0000000000457569
RDX: 200000000000028a RSI: 0000000020000480 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff3d3c656d4
R13: 00000000004c32f9 R14: 00000000004d4f48 R15: 0000000000000004

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