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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: 1 PID: 12590 Comm: syz-executor3 Not tainted 4.20.0-rc5+ #112
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+0x1c9/0x220 lib/dump_stack.c:113
 kmsan_report+0x12d/0x290 mm/kmsan/kmsan.c:684
 __msan_warning+0x76/0xc0 mm/kmsan/kmsan_instr.c:316
 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+0x211/0x5f0 security/keys/keyctl_pkey.c:130
 keyctl_pkey_e_d_s+0x11f/0x680 security/keys/keyctl_pkey.c:218
 __do_sys_keyctl security/keys/keyctl.c:1760 [inline]
 __se_sys_keyctl+0xf6e/0x1b20 security/keys/keyctl.c:1637
 __x64_sys_keyctl+0x62/0x80 security/keys/keyctl.c:1637
 do_syscall_64+0xcd/0x110 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457679
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:00007fd62ab68c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457679
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 000000000000001b
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000053 R11: 0000000000000246 R12: 00007fd62ab696d4
R13: 00000000004c2a70 R14: 00000000004d4ac8 R15: 00000000ffffffff

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+0x211/0x5f0 security/keys/keyctl_pkey.c:130
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