================================================================== BUG: KMSAN: uninit-value in inet_csk_bind_conflict+0x5f9/0x990 net/ipv4/inet_connection_sock.c:151 CPU: 1 PID: 11024 Comm: syz-executor6 Not tainted 4.16.0+ #87 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+0x185/0x1d0 lib/dump_stack.c:53 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683 inet_csk_bind_conflict+0x5f9/0x990 net/ipv4/inet_connection_sock.c:151 inet_csk_get_port+0x1d28/0x1e40 net/ipv4/inet_connection_sock.c:320 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 inet_bind+0xa91/0xf50 net/ipv4/af_inet.c:508 SYSC_bind+0x3f2/0x4b0 net/socket.c:1474 SyS_bind+0x54/0x80 net/socket.c:1460 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x455979 RSP: 002b:00007fc81fb74c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007fc81fb756d4 RCX: 0000000000455979 RDX: 0000000000000010 RSI: 0000000020011ff0 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000025 R14: 00000000006f4418 R15: 0000000000000000 CPU: 0 PID: 11026 Comm: syz-executor1 Not tainted 4.16.0+ #87 Uninit was stored to memory at: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline] kmsan_save_stack mm/kmsan/kmsan.c:293 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528 Call Trace: inet_twsk_alloc+0xaef/0xc00 net/ipv4/inet_timewait_sock.c:182 tcp_time_wait+0xd9/0xf50 net/ipv4/tcp_minisocks.c:258 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:53 tcp_rcv_state_process+0xe9d/0x65f0 net/ipv4/tcp_input.c:6003 tcp_v4_do_rcv+0xb26/0xd90 net/ipv4/tcp_ipv4.c:1491 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x87b/0xab0 lib/fault-inject.c:149 sk_backlog_rcv include/net/sock.h:908 [inline] __release_sock+0x2d6/0x680 net/core/sock.c:2271 release_sock+0x97/0x2a0 net/core/sock.c:2786 should_failslab+0x279/0x2a0 mm/failslab.c:32 tcp_close+0x277/0x18f0 net/ipv4/tcp.c:2269 inet_release+0x240/0x2a0 net/ipv4/af_inet.c:427 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc_node mm/slub.c:2663 [inline] slab_alloc mm/slub.c:2745 [inline] kmem_cache_alloc+0x136/0xb90 mm/slub.c:2750 sock_release net/socket.c:595 [inline] sock_close+0xe0/0x300 net/socket.c:1149 __fput+0x49e/0xa10 fs/file_table.c:209 ____fput+0x37/0x40 fs/file_table.c:243 task_work_run+0x243/0x2c0 kernel/task_work.c:113 radix_tree_node_alloc+0x1c7/0x5c0 lib/radix-tree.c:421 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x10e1/0x38d0 kernel/exit.c:867 do_group_exit+0x1a0/0x360 kernel/exit.c:970 idr_get_free+0x5be/0x1490 lib/radix-tree.c:2167 SYSC_exit_group+0x21/0x30 kernel/exit.c:981 SyS_exit_group+0x25/0x30 kernel/exit.c:979 idr_alloc_u32+0x27c/0x550 lib/idr.c:49 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline] kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188 idr_alloc+0x161/0x220 lib/idr.c:90 kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314 kmem_cache_alloc+0xaab/0xb90 mm/slub.c:2756 cma_ps_alloc drivers/infiniband/core/cma.c:224 [inline] cma_alloc_port+0x205/0x860 drivers/infiniband/core/cma.c:3041 inet_twsk_alloc+0x13b/0xc00 net/ipv4/inet_timewait_sock.c:163 tcp_time_wait+0xd9/0xf50 net/ipv4/tcp_minisocks.c:258 cma_alloc_any_port drivers/infiniband/core/cma.c:3113 [inline] cma_get_port drivers/infiniband/core/cma.c:3266 [inline] rdma_bind_addr+0x16e5/0x4a20 drivers/infiniband/core/cma.c:3386 tcp_rcv_state_process+0xe9d/0x65f0 net/ipv4/tcp_input.c:6003 tcp_v4_do_rcv+0xb26/0xd90 net/ipv4/tcp_ipv4.c:1491 cma_bind_addr drivers/infiniband/core/cma.c:2910 [inline] rdma_resolve_addr+0x1a3e/0x3d10 drivers/infiniband/core/cma.c:2922 sk_backlog_rcv include/net/sock.h:908 [inline] __release_sock+0x2d6/0x680 net/core/sock.c:2271 release_sock+0x97/0x2a0 net/core/sock.c:2786 tcp_close+0x277/0x18f0 net/ipv4/tcp.c:2269 inet_release+0x240/0x2a0 net/ipv4/af_inet.c:427 ucma_resolve_ip+0x508/0x600 drivers/infiniband/core/ucma.c:689 sock_release net/socket.c:595 [inline] sock_close+0xe0/0x300 net/socket.c:1149 __fput+0x49e/0xa10 fs/file_table.c:209 ucma_write+0x576/0x5e0 drivers/infiniband/core/ucma.c:1656 ____fput+0x37/0x40 fs/file_table.c:243 task_work_run+0x243/0x2c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x10e1/0x38d0 kernel/exit.c:867 do_group_exit+0x1a0/0x360 kernel/exit.c:970 __vfs_write+0x1a3/0x9f0 fs/read_write.c:480 SYSC_exit_group+0x21/0x30 kernel/exit.c:981 SyS_exit_group+0x25/0x30 kernel/exit.c:979 vfs_write+0x463/0x8d0 fs/read_write.c:544 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 SYSC_write+0x172/0x360 fs/read_write.c:589 ================================================================== SyS_write+0x55/0x80 fs/read_write.c:581