RDX: 00007f963e51b510 RSI: 000000004020ae46 RDI: 0000000000000006
RBP: 0000000020ff1000 R08: 00007f963e51b070 R09: 000000000078bf00
R10: 0000000000000007 R11: 0000000000000246 R12: 00000000fec00000
R13: 0000000000000006 R14: 00000000004cdffa R15: 00007f963e51d6d4
Uninit was stored to memory at:
=====================================================
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+0x148/0x8e0 kernel/kallsyms.c:290
CPU: 1 PID: 25354 Comm: syz-executor.5 Not tainted 5.7.0-rc4-syzkaller #0
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:118
 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
 is_kernel include/linux/kallsyms.h:41 [inline]
 is_ksym_addr include/linux/kallsyms.h:49 [inline]
 kallsyms_lookup+0x148/0x8e0 kernel/kallsyms.c:290
 __sprint_symbol+0x140/0x590 kernel/kallsyms.c:363
 sprint_symbol+0x7c/0x90 kernel/kallsyms.c:394
 symbol_string+0x157/0x420 lib/vsprintf.c:961
 pointer+0x1560/0x1e40 lib/vsprintf.c:2188
 vsnprintf+0x1a2a/0x31b0 lib/vsprintf.c:2578
 vscnprintf+0xc2/0x180 lib/vsprintf.c:2677
 vprintk_store+0xef/0x11d0 kernel/printk/printk.c:1942
 vprintk_emit+0x2c0/0x8b0 kernel/printk/printk.c:2009
 vprintk_default+0x90/0xa0 kernel/printk/printk.c:2054
 vprintk_func+0x1ec/0x220 kernel/printk/printk_safe.c:385
 printk+0x18b/0x1d3 kernel/printk/printk.c:2087
 stack_trace_print+0x1b1/0x1f0 kernel/stacktrace.c:32
 kmsan_print_origin+0xf5/0x190 mm/kmsan/kmsan_report.c:52
 kmsan_internal_chain_origin+0x76/0x130 mm/kmsan/kmsan.c:302
 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116
 kvm_memslot_move_forward arch/x86/kvm/../../../virt/kvm/kvm_main.c:961 [inline]
 update_memslots arch/x86/kvm/../../../virt/kvm/kvm_main.c:1021 [inline]
 kvm_set_memslot+0x15b8/0x1b90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1152
 __kvm_set_memory_region+0x1b3b/0x1dc0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1300
 kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1321 [inline]
 kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1333 [inline]
 kvm_vm_ioctl+0x131c/0x4350 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3604
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl fs/ioctl.c:771 [inline]
 __do_sys_ioctl fs/ioctl.c:780 [inline]
 __se_sys_ioctl+0x2e9/0x410 fs/ioctl.c:778
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:778
 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c6f7
Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 0d b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f963e51b068 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 000000000045c6f7
RDX: 00007f963e51b510 RSI: 000000004020ae46 RDI: 0000000000000006
RBP: 0000000020ff1000 R08: 00007f963e51b070 R09: 000000000078bf00
R10: 0000000000000007 R11: 0000000000000246 R12: 00000000fec00000
R13: 0000000000000006 R14: 00000000004cdffa R15: 00007f963e51d6d4

Uninit was created at:
 kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:144
 kmsan_internal_alloc_meta_for_pages mm/kmsan/kmsan_shadow.c:280 [inline]
 kmsan_alloc_page+0xb9/0x180 mm/kmsan/kmsan_shadow.c:304
 __alloc_pages_nodemask+0x56a2/0x5dc0 mm/page_alloc.c:4848
 alloc_pages_current+0x67d/0x990 mm/mempolicy.c:2295
 alloc_pages include/linux/gfp.h:540 [inline]
 stack_depot_save+0x3dd/0x490 lib/stackdepot.c:301
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:150 [inline]
 kmsan_internal_chain_origin+0xc6/0x130 mm/kmsan/kmsan.c:310
 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116
 __mpol_dup+0x12f/0x450 mm/mempolicy.c:2338
 mpol_dup include/linux/mempolicy.h:91 [inline]
 vma_dup_policy+0x93/0x190 mm/mempolicy.c:2305
 dup_mmap+0xa30/0x1d20 kernel/fork.c:550
 dup_mm+0x1f2/0x710 kernel/fork.c:1365
 copy_mm kernel/fork.c:1421 [inline]
 copy_process+0x4bd8/0x9cb0 kernel/fork.c:2087
 _do_fork+0x24f/0xfb0 kernel/fork.c:2432
 __do_sys_clone kernel/fork.c:2587 [inline]
 __se_sys_clone+0x383/0x3d0 kernel/fork.c:2568
 __x64_sys_clone+0x62/0x80 kernel/fork.c:2568
 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
=====================================================