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BUG: KMSAN: uninit-value in is_kernel include/linux/kallsyms.h:41 [inline]
BUG: KMSAN: uninit-value in is_ksym_addr include/linux/kallsyms.h:49 [inline]
BUG: KMSAN: uninit-value in kallsyms_lookup+0x152/0x910 kernel/kallsyms.c:288
CPU: 0 PID: 16800 Comm: syz-executor3 Not tainted 4.16.0+ #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683
 is_kernel include/linux/kallsyms.h:41 [inline]
 is_ksym_addr include/linux/kallsyms.h:49 [inline]
 kallsyms_lookup+0x152/0x910 kernel/kallsyms.c:288
 __sprint_symbol+0x147/0x5b0 kernel/kallsyms.c:361
 sprint_backtrace+0x7f/0x90 kernel/kallsyms.c:429
 symbol_string+0x19f/0x230 lib/vsprintf.c:684
 pointer+0xdb9/0x1410 lib/vsprintf.c:1870
 vsnprintf+0xa2d/0x33c0 lib/vsprintf.c:2286
 seq_vprintf fs/seq_file.c:400 [inline]
 seq_printf+0x29f/0x420 fs/seq_file.c:415
 proc_pid_stack+0x326/0x470 fs/proc/base.c:449
 proc_single_show+0x1af/0x300 fs/proc/base.c:747
 traverse+0x3c4/0xe60 fs/seq_file.c:111
 seq_read+0x3dc/0x2260 fs/seq_file.c:192
 __vfs_read+0x1a5/0x9b0 fs/read_write.c:411
 vfs_read+0x36c/0x6c0 fs/read_write.c:447
 SYSC_pread64+0x275/0x310 fs/read_write.c:611
 SyS_pread64+0x65/0x90 fs/read_write.c:598
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455979
RSP: 002b:00007fa0174edc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000011
RAX: ffffffffffffffda RBX: 00007fa0174ee6d4 RCX: 0000000000455979
RDX: 000000000000fdb4 RSI: 00000000200003c0 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000063 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000477 R14: 00000000006f9bc8 R15: 0000000000000000

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528
 save_stack_address arch/x86/kernel/stacktrace.c:29 [inline]
 __save_stack_trace+0x829/0xb00 arch/x86/kernel/stacktrace.c:50
 save_stack_trace_tsk+0x258/0x2f0 arch/x86/kernel/stacktrace.c:82
 proc_pid_stack+0x26a/0x470 fs/proc/base.c:446
 proc_single_show+0x1af/0x300 fs/proc/base.c:747
 traverse+0x3c4/0xe60 fs/seq_file.c:111
 seq_read+0x3dc/0x2260 fs/seq_file.c:192
 __vfs_read+0x1a5/0x9b0 fs/read_write.c:411
 vfs_read+0x36c/0x6c0 fs/read_write.c:447
 SYSC_pread64+0x275/0x310 fs/read_write.c:611
 SyS_pread64+0x65/0x90 fs/read_write.c:598
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528
 update_stack_state+0x959/0xa40 arch/x86/kernel/unwind_frame.c:257
 unwind_next_frame+0x618/0xe50 arch/x86/kernel/unwind_frame.c:329
 __save_stack_trace+0x734/0xb00 arch/x86/kernel/stacktrace.c:48
 save_stack_trace_tsk+0x258/0x2f0 arch/x86/kernel/stacktrace.c:82
 proc_pid_stack+0x26a/0x470 fs/proc/base.c:446
 proc_single_show+0x1af/0x300 fs/proc/base.c:747
 traverse+0x3c4/0xe60 fs/seq_file.c:111
 seq_read+0x3dc/0x2260 fs/seq_file.c:192
 __vfs_read+0x1a5/0x9b0 fs/read_write.c:411
 vfs_read+0x36c/0x6c0 fs/read_write.c:447
 SYSC_pread64+0x275/0x310 fs/read_write.c:611
 SyS_pread64+0x65/0x90 fs/read_write.c:598
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Local variable description: ----success.i.i.i@should_fail
Variable was created at:
 should_fail+0x57/0xab0 lib/fault-inject.c:109
 should_failslab+0x279/0x2a0 mm/failslab.c:32
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