name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 PID: 9852 Comm: syz-executor1 Not tainted 4.19.0+ #80
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
==================================================================
BUG: KMSAN: uninit-value in get_stack_info+0x720/0x9d0 arch/x86/kernel/dumpstack_64.c:139
CPU: 0 PID: 9852 Comm: syz-executor1 Not tainted 4.19.0+ #80
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
 get_stack_info+0x720/0x9d0 arch/x86/kernel/dumpstack_64.c:139
 __unwind_start+0x7d/0xe0 arch/x86/kernel/unwind_frame.c:402
 unwind_start arch/x86/include/asm/unwind.h:54 [inline]
 show_trace_log_lvl+0x20e/0x11e0 arch/x86/kernel/dumpstack.c:173
 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_failslab+0x278/0x2a0 mm/failslab.c:32
 should_failslab+0x29/0x70 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc_node mm/slub.c:2653 [inline]
 __kmalloc_node+0x257/0x1520 mm/slub.c:3830
 kmalloc_node include/linux/slab.h:555 [inline]
 kzalloc_node include/linux/slab.h:718 [inline]
 __get_vm_area_node+0x28c/0x820 mm/vmalloc.c:1390
 __vmalloc_node_range+0x290/0x12a0 mm/vmalloc.c:1747
 __vmalloc_node mm/vmalloc.c:1797 [inline]
 __vmalloc_node_flags mm/vmalloc.c:1811 [inline]
 vmalloc+0xd8/0xf0 mm/vmalloc.c:1833
 snd_seq_pool_init+0xa3/0x7c0 sound/core/seq/seq_memory.c:392
 snd_seq_write+0x3c9/0xd90 sound/core/seq/seq_clientmgr.c:1023
 __vfs_write+0x1f4/0xb80 fs/read_write.c:485
 vfs_write+0x4a3/0x8f0 fs/read_write.c:549
 ksys_write fs/read_write.c:598 [inline]
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write+0x17a/0x370 fs/read_write.c:607
 __x64_sys_write+0x4a/0x70 fs/read_write.c:607
 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:00007f38115b5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f38115b5c90 RCX: 0000000000457569
RDX: 00000000ffffff17 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f38115b66d4
R13: 00000000004c590c R14: 00000000004d9538 R15: 0000000000000005

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
==================================================================