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BUG: KMSAN: uninit-value in keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline]
BUG: KMSAN: uninit-value in keyctl_pkey_params_get+0x29c/0x7d0 security/keys/keyctl_pkey.c:96
CPU: 0 PID: 6781 Comm: syz-executor808 Not tainted 4.20.0-rc2+ #88
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+0x32d/0x480 lib/dump_stack.c:113
 kmsan_report+0x19f/0x300 mm/kmsan/kmsan.c:911
 __msan_warning+0x76/0xc0 mm/kmsan/kmsan_instr.c:415
 keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline]
 keyctl_pkey_params_get+0x29c/0x7d0 security/keys/keyctl_pkey.c:96
 keyctl_pkey_params_get_2 security/keys/keyctl_pkey.c:130 [inline]
 keyctl_pkey_verify+0x2e2/0x890 security/keys/keyctl_pkey.c:293
 __do_sys_keyctl security/keys/keyctl.c:1768 [inline]
 __se_sys_keyctl+0x112c/0x1af0 security/keys/keyctl.c:1637
 __x64_sys_keyctl+0x62/0x80 security/keys/keyctl.c:1637
 do_syscall_64+0xcf/0x110 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x440129
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffdb5c1f8d8 EFLAGS: 00000286 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440129
RDX: 00000000200002c0 RSI: 00000000200000c0 RDI: 000000000000001c
RBP: 00000000006ca018 R08: 0000000020000380 R09: 0000000000000000
R10: 00000000fffffd2a R11: 0000000000000286 R12: 00000000004019b0
R13: 0000000000401a40 R14: 0000000000000000 R15: 0000000000000000

Local variable description: ----args.i@keyctl_pkey_params_get
Variable was created at:
 keyctl_pkey_params_get+0xaa/0x7d0 security/keys/keyctl_pkey.c:83
 keyctl_pkey_params_get_2 security/keys/keyctl_pkey.c:130 [inline]
 keyctl_pkey_verify+0x2e2/0x890 security/keys/keyctl_pkey.c:293
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