================================================================== 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+0xa1b/0xc50 sound/core/oss/linear.c:110 CPU: 0 PID: 10992 Comm: syz-executor.0 Not tainted 5.0.0+ #11 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x173/0x1d0 lib/dump_stack.c:113 kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:600 __msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:313 __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+0xa1b/0xc50 sound/core/oss/linear.c:110 snd_pcm_plug_read_transfer+0x3bf/0x590 sound/core/oss/pcm_plugin.c:651 snd_pcm_oss_read2 sound/core/oss/pcm_oss.c:1480 [inline] snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1518 [inline] snd_pcm_oss_read+0xa4a/0x1960 sound/core/oss/pcm_oss.c:2758 __vfs_read+0x1e5/0xbf0 fs/read_write.c:416 vfs_read+0x359/0x6f0 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+0x17a/0x370 fs/read_write.c:586 __x64_sys_read+0x4a/0x70 fs/read_write.c:586 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457f29 Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f97c1929c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457f29 RDX: 0000000000000293 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f97c192a6d4 R13: 00000000004c3a63 R14: 00000000004d8550 R15: 00000000ffffffff Uninit was created at: No stack ================================================================== Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable