Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x87b/0xab0 lib/fault-inject.c:149
 should_failslab+0x279/0x2a0 mm/failslab.c:32
==================================================================
BUG: KMSAN: uninit-value in on_stack arch/x86/include/asm/stacktrace.h:44 [inline]
BUG: KMSAN: uninit-value in update_stack_state+0x4ec/0xa40 arch/x86/kernel/unwind_frame.c:238
CPU: 1 PID: 8329 Comm: syz-executor2 Not tainted 4.16.0+ #84
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+0x14a/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:676
 on_stack arch/x86/include/asm/stacktrace.h:44 [inline]
 update_stack_state+0x4ec/0xa40 arch/x86/kernel/unwind_frame.c:238
 unwind_next_frame+0x618/0xe50 arch/x86/kernel/unwind_frame.c:329
 show_trace_log_lvl+0xb49/0x1030 arch/x86/kernel/dumpstack.c:212
 show_stack+0xfc/0x150 arch/x86/kernel/dumpstack.c:236
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x87b/0xab0 lib/fault-inject.c:149
 should_failslab+0x279/0x2a0 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:422 [inline]
 slab_alloc_node mm/slub.c:2663 [inline]
 slab_alloc mm/slub.c:2745 [inline]
 __kmalloc+0xc2/0x350 mm/slub.c:3785
 kmalloc include/linux/slab.h:517 [inline]
 switchdev_deferred_enqueue+0x9d/0x4f0 net/switchdev/switchdev.c:163
 switchdev_port_attr_set_defer net/switchdev/switchdev.c:314 [inline]
 switchdev_port_attr_set+0x1bd/0x270 net/switchdev/switchdev.c:335
 br_set_state+0x178/0x4d0 net/bridge/br_stp.c:44
 br_stp_disable_port+0xea/0x340 net/bridge/br_stp_if.c:110
 br_stp_disable_bridge+0xf2/0x2b0 net/bridge/br_stp_if.c:80
 br_dev_stop+0x40/0xd0 net/bridge/br_device.c:189
 __dev_close_many+0x593/0x6f0 net/core/dev.c:1475
 __dev_close net/core/dev.c:1487 [inline]
 __dev_change_flags+0x56e/0xaf0 net/core/dev.c:6923
 dev_change_flags+0xcb/0x240 net/core/dev.c:6994
 devinet_ioctl+0x14c7/0x27e0 net/ipv4/devinet.c:1080
 inet_ioctl+0x5d8/0x820 net/ipv4/af_inet.c:920
 packet_ioctl+0x2bd/0x420 net/packet/af_packet.c:4068
 sock_do_ioctl+0x13b/0x6b0 net/socket.c:958
 sock_ioctl+0x4da/0xbf0 net/socket.c:1081
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xaf0/0x2440 fs/ioctl.c:686
 SYSC_ioctl+0x1d2/0x260 fs/ioctl.c:701
 SyS_ioctl+0x54/0x80 fs/ioctl.c:692
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455329
RSP: 002b:00007f81c4df8c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f81c4df96d4 RCX: 0000000000455329
RDX: 0000000020000140 RSI: 0000000000008914 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 000000000000039b R14: 00000000006f8728 R15: 0000000000000000

Local variable description: ----oldbit.i.i.i@pick_next_task_fair
Variable was created at:
 pick_next_task_fair+0x63/0x1f70 kernel/sched/fair.c:6642
 pick_next_task+0x1b4/0x410 kernel/sched/core.c:3290
==================================================================