name fail_page_alloc, interval 1, probability 0, space 0, times 1
CPU: 1 PID: 10486 Comm: syz-executor1 Not tainted 4.19.0+ #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
==================================================================
BUG: KMSAN: uninit-value in show_trace_log_lvl+0x53f/0x11e0 arch/x86/kernel/dumpstack.c:212
CPU: 1 PID: 10486 Comm: syz-executor1 Not tainted 4.19.0+ #82
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
 show_trace_log_lvl+0x53f/0x11e0 arch/x86/kernel/dumpstack.c:212
 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 include/linux/gfp.h:475 [inline]
 __alloc_pages_node include/linux/gfp.h:488 [inline]
 alloc_pages_vma+0x1992/0x1c70 mm/mempolicy.c:2049
 do_huge_pmd_anonymous_page+0xc8c/0x3070 mm/huge_memory.c:719
 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:copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66
Code: 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a
RSP: 0018:ffff8801146ff8d8 EFLAGS: 00010202
RAX: a62eed405212d000 RBX: 0000000000000010 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffff8801146ffa00 RDI: 0000000020c86000
RBP: ffff8801146ff950 R08: 0000000000000024 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff8938df80 R12: ffff88011cb06388
R13: 0000000000000000 R14: 0000000020c86000 R15: ffff8801146ffa00
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 1
 copy_to_user include/linux/uaccess.h:183 [inline]
 put_cmsg+0x457/0x870 net/core/scm.c:240
 do_ipv6_getsockopt+0x2dd8/0x36a0 net/ipv6/ipv6_sockglue.c:1074
 ipv6_getsockopt+0x149/0x530 net/ipv6/ipv6_sockglue.c:1372
 tcp_getsockopt+0x1c6/0x1f0 net/ipv4/tcp.c:3583
 sock_common_getsockopt+0x13f/0x180 net/core/sock.c:2997
 __sys_getsockopt+0x489/0x550 net/socket.c:1939
 __do_sys_getsockopt net/socket.c:1950 [inline]
 __se_sys_getsockopt+0xe1/0x100 net/socket.c:1947
 __x64_sys_getsockopt+0x62/0x80 net/socket.c:1947
 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:00007f2512555c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007f2512555c90 RCX: 0000000000457569
RDX: 0000000000000006 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 000000000072bfa0 R08: 0000000020000000 R09: 0000000000000000
R10: 0000000020c86000 R11: 0000000000000246 R12: 00007f25125566d4
R13: 00000000004be320 R14: 00000000004cd8e8 R15: 0000000000000006

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
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