RDX: 0000000000001000 RSI: 0000000020000100 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 00000000004c0a0c R14: 00000000004d0d40 R15: 0000000000000004 ================================================================== BUG: KMSAN: uninit-value in __arch_swab32 arch/x86/include/uapi/asm/swab.h:10 [inline] BUG: KMSAN: uninit-value in __fswab32 include/uapi/linux/swab.h:59 [inline] BUG: KMSAN: uninit-value in do_convert sound/core/oss/linear.c:50 [inline] BUG: KMSAN: uninit-value in convert sound/core/oss/linear.c:81 [inline] BUG: KMSAN: uninit-value in linear_transfer+0x917/0xc10 sound/core/oss/linear.c:110 CPU: 1 PID: 8144 Comm: syz-executor6 Not tainted 4.18.0-rc4+ #25 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+0x185/0x1e0 lib/dump_stack.c:113 kmsan_report+0x195/0x2c0 mm/kmsan/kmsan.c:1092 __msan_warning_32+0x7d/0xe0 mm/kmsan/kmsan_instr.c:640 __arch_swab32 arch/x86/include/uapi/asm/swab.h:10 [inline] __fswab32 include/uapi/linux/swab.h:59 [inline] do_convert sound/core/oss/linear.c:50 [inline] convert sound/core/oss/linear.c:81 [inline] linear_transfer+0x917/0xc10 sound/core/oss/linear.c:110 snd_pcm_plug_read_transfer+0x921/0xb10 sound/core/oss/pcm_plugin.c:650 snd_pcm_oss_read2 sound/core/oss/pcm_oss.c:1474 [inline] snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1531 [inline] snd_pcm_oss_read+0x12e5/0x1b80 sound/core/oss/pcm_oss.c:2752 __vfs_read+0x1f0/0xb40 fs/read_write.c:416 vfs_read+0x36c/0x6b0 fs/read_write.c:452 ksys_read fs/read_write.c:578 [inline] __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x1cf/0x400 fs/read_write.c:586 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455a79 Code: 1d ba 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0f59203c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f0f592046d4 RCX: 0000000000455a79 RDX: 0000000000001000 RSI: 0000000020000100 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 00000000004c0a0c R14: 00000000004d0d40 R15: 0000000000000004 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline] kmsan_save_stack mm/kmsan/kmsan.c:271 [inline] kmsan_internal_chain_origin+0x13c/0x240 mm/kmsan/kmsan.c:683 kmsan_memcpy_origins+0x13d/0x1b0 mm/kmsan/kmsan.c:397 __msan_memcpy+0xe7/0x150 mm/kmsan/kmsan_instr.c:432 do_convert sound/core/oss/linear.c:48 [inline] convert sound/core/oss/linear.c:81 [inline] linear_transfer+0x6bc/0xc10 sound/core/oss/linear.c:110 snd_pcm_plug_read_transfer+0x921/0xb10 sound/core/oss/pcm_plugin.c:650 snd_pcm_oss_read2 sound/core/oss/pcm_oss.c:1474 [inline] snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1531 [inline] snd_pcm_oss_read+0x12e5/0x1b80 sound/core/oss/pcm_oss.c:2752 __vfs_read+0x1f0/0xb40 fs/read_write.c:416 vfs_read+0x36c/0x6b0 fs/read_write.c:452 ksys_read fs/read_write.c:578 [inline] __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x1cf/0x400 fs/read_write.c:586 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline] kmsan_internal_alloc_meta_for_pages+0x157/0x730 mm/kmsan/kmsan.c:804 kmsan_alloc_page+0x80/0xe0 mm/kmsan/kmsan_hooks.c:250 __alloc_pages_nodemask+0x105b/0x6320 mm/page_alloc.c:4409 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:494 [inline] __vmalloc_area_node mm/vmalloc.c:1689 [inline] __vmalloc_node_range+0x8bf/0x1170 mm/vmalloc.c:1754 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 __vmalloc_node mm/vmalloc.c:1799 [inline] __vmalloc_node_flags mm/vmalloc.c:1813 [inline] vmalloc+0xd8/0xf0 mm/vmalloc.c:1835 snd_pcm_plugin_alloc+0x29a/0xc70 sound/core/oss/pcm_plugin.c:70 snd_pcm_plug_alloc+0x281/0x5d0 sound/core/oss/pcm_plugin.c:129 snd_pcm_oss_change_params_locked+0x5c23/0x6bf0 sound/core/oss/pcm_oss.c:1038 snd_pcm_oss_make_ready_locked sound/core/oss/pcm_oss.c:1183 [inline] snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1507 [inline] snd_pcm_oss_read+0x4d0/0x1b80 sound/core/oss/pcm_oss.c:2752 __vfs_read+0x1f0/0xb40 fs/read_write.c:416 vfs_read+0x36c/0x6b0 fs/read_write.c:452 CPU: 0 PID: 8164 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #25 ksys_read fs/read_write.c:578 [inline] __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x1cf/0x400 fs/read_write.c:586 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Call Trace: