./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor696000871

<...>
Warning: Permanently added '10.128.0.159' (ED25519) to the list of known hosts.
execve("./syz-executor696000871", ["./syz-executor696000871"], 0x7ffc240592b0 /* 10 vars */) = 0
brk(NULL)                               = 0x555591dc6000
brk(0x555591dc6d00)                     = 0x555591dc6d00
arch_prctl(ARCH_SET_FS, 0x555591dc6380) = 0
set_tid_address(0x555591dc6650)         = 294
set_robust_list(0x555591dc6660, 24)     = 0
rseq(0x555591dc6ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented)
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor696000871", 4096) = 27
getrandom("\xc4\x6b\x1b\xbf\xfa\x12\x05\xef", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555591dc6d00
brk(0x555591de7d00)                     = 0x555591de7d00
brk(0x555591de8000)                     = 0x555591de8000
mprotect(0x7fae16d6f000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
openat(AT_FDCWD, "/proc/self/make-it-fail", O_WRONLY) = 3
close(3)                                = 0
openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_WRONLY) = 3
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3
write(3, "N", 1)                        = 1
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3
write(3, "N", 1)                        = 1
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3
write(3, "N", 1)                        = 1
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3
write(3, "N", 1)                        = 1
close(3)                                = 0
openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3
write(3, "0", 1)                        = 1
close(3)                                = 0
chmod("/dev/raw-gadget", 0666)          = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555591dc6650) = 295
./strace-static-x86_64: Process 295 attached
[pid   295] set_robust_list(0x555591dc6660, 24) = 0
[pid   295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   295] getppid()                   = 0
[pid   295] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   295] unshare(CLONE_NEWNS)        = 0
[pid   295] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   295] unshare(CLONE_NEWCGROUP)    = 0
[pid   295] unshare(CLONE_NEWUTS)       = 0
[pid   295] unshare(CLONE_SYSVSEM)      = 0
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] getpid()                    = 1
[pid   295] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid   295] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[   23.718952][   T30] audit: type=1400 audit(1732064674.118:66): avc:  denied  { execmem } for  pid=294 comm="syz-executor696" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   23.741144][   T30] audit: type=1400 audit(1732064674.138:67): avc:  denied  { integrity } for  pid=294 comm="syz-executor696" lockdown_reason="debugfs access" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=lockdown permissive=1
[pid   295] unshare(CLONE_NEWNET)       = 0
[pid   295] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   295] write(3, "0 65535", 7)      = 7
[pid   295] close(3)                    = 0
[pid   295] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   295] write(3, "100000", 6)       = 6
[pid   295] close(3)                    = 0
[pid   295] mkdir("./syz-tmp", 0777)    = 0
[pid   295] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   295] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   295] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   295] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   295] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   295] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   295] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   295] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   295] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   295] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   295] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   295] chdir("/")                  = 0
[pid   295] umount2("./pivot", MNT_DETACH) = 0
[pid   295] chroot("./newroot")         = 0
[pid   295] chdir("/")                  = 0
[pid   295] mkdir("/dev/binderfs", 0777) = 0
[pid   295] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   295] symlink("/dev/binderfs", "./binderfs") = 0
[pid   295] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   295] write(1, "executing program\n", 18executing program
) = 18
[   23.764332][   T30] audit: type=1400 audit(1732064674.138:68): avc:  denied  { setattr } for  pid=294 comm="syz-executor696" name="raw-gadget" dev="devtmpfs" ino=250 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1
[   23.787736][   T30] audit: type=1400 audit(1732064674.138:69): avc:  denied  { mounton } for  pid=295 comm="syz-executor696" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[   23.809117][   T30] audit: type=1400 audit(1732064674.158:70): avc:  denied  { mounton } for  pid=295 comm="syz-executor696" path="/root/syz-tmp" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   23.832165][   T30] audit: type=1400 audit(1732064674.168:71): avc:  denied  { mount } for  pid=295 comm="syz-executor696" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   23.854286][   T30] audit: type=1400 audit(1732064674.168:72): avc:  denied  { mounton } for  pid=295 comm="syz-executor696" path="/root/syz-tmp/newroot/dev" dev="tmpfs" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1
[   23.878225][   T30] audit: type=1400 audit(1732064674.168:73): avc:  denied  { mount } for  pid=295 comm="syz-executor696" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   23.900168][   T30] audit: type=1400 audit(1732064674.168:74): avc:  denied  { mounton } for  pid=295 comm="syz-executor696" path="/root/syz-tmp/newroot/sys/kernel/debug" dev="debugfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:debugfs_t tclass=dir permissive=1
[   23.925450][   T30] audit: type=1400 audit(1732064674.168:75): avc:  denied  { mounton } for  pid=295 comm="syz-executor696" path="/root/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14689 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[pid   295] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SK_MSG, insn_cnt=4, insns=0x20000040, license="GPL", log_level=2, log_size=64912, log_buf="", kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 3
[pid   295] close(3)                    = 0
[pid   295] socketpair(AF_UNIX, SOCK_DGRAM, 0, [3, 4]) = 0
[pid   295] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SK_SKB, insn_cnt=4, insns=0x20000540, license="GPL", log_level=4, log_size=64912, log_buf="func#0 @0\n0: R1=ctx(id=0,off=0,imm=0) R10=fp0\n0: (b4) w0 = 0\n1: R0_w=inv0 R1=ctx(id=0,off=0,imm=0) R"..., kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 5
[pid   295] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_SOCKMAP, key_size=4, value_size=4, max_entries=18, map_flags=0, inner_map_fd=-1, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 6
[pid   295] bpf(BPF_PROG_ATTACH, {target_fd=6, attach_bpf_fd=5, attach_type=BPF_SK_SKB_VERDICT, attach_flags=0}, 16) = 0
[pid   295] bpf(BPF_MAP_UPDATE_ELEM, {map_fd=6, key=0x20000000, value=0x20000080, flags=BPF_ANY}, 32) = 0
[pid   295] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 7
[pid   295] write(7, "5", 1)            = 1
[   24.055312][  T295] FAULT_INJECTION: forcing a failure.
[   24.055312][  T295] name failslab, interval 1, probability 0, space 0, times 1
[   24.067768][  T295] CPU: 0 PID: 295 Comm: syz-executor696 Not tainted 5.15.167-syzkaller-00348-g2e66050fb753 #0
[   24.077780][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[   24.087675][  T295] Call Trace:
[   24.090807][  T295]  <TASK>
[   24.093575][  T295]  dump_stack_lvl+0x151/0x1c0
[   24.098182][  T295]  ? io_uring_drop_tctx_refs+0x190/0x190
[   24.103734][  T295]  dump_stack+0x15/0x20
[   24.107721][  T295]  should_fail+0x3c6/0x510
[   24.111977][  T295]  __should_failslab+0xa4/0xe0
[   24.116573][  T295]  should_failslab+0x9/0x20
[   24.120938][  T295]  slab_pre_alloc_hook+0x37/0xd0
[   24.125690][  T295]  kmem_cache_alloc_trace+0x48/0x210
[   24.130808][  T295]  ? sk_psock_skb_ingress_self+0x60/0x330
[   24.136364][  T295]  ? migrate_disable+0x190/0x190
[   24.141138][  T295]  sk_psock_skb_ingress_self+0x60/0x330
[   24.146516][  T295]  sk_psock_verdict_recv+0x66d/0x840
[   24.151640][  T295]  unix_read_sock+0x132/0x370
[   24.156239][  T295]  ? sk_psock_skb_redirect+0x440/0x440
[   24.161532][  T295]  ? unix_stream_splice_actor+0x120/0x120
[   24.167084][  T295]  ? _raw_spin_lock_irqsave+0xf9/0x210
[   24.172382][  T295]  ? unix_stream_splice_actor+0x120/0x120
[   24.177936][  T295]  sk_psock_verdict_data_ready+0x147/0x1a0
[   24.183576][  T295]  ? sk_psock_start_verdict+0xc0/0xc0
[   24.188785][  T295]  ? _raw_spin_lock+0xa4/0x1b0
[   24.193387][  T295]  ? _raw_spin_unlock_irqrestore+0x5c/0x80
[   24.199025][  T295]  ? skb_queue_tail+0xfb/0x120
[   24.203627][  T295]  unix_dgram_sendmsg+0x15fa/0x2090
[   24.208663][  T295]  ? unix_dgram_poll+0x690/0x690
[   24.213432][  T295]  ? security_socket_sendmsg+0x82/0xb0
[   24.218733][  T295]  ? unix_dgram_poll+0x690/0x690
[   24.223503][  T295]  ____sys_sendmsg+0x59e/0x8f0
[   24.228104][  T295]  ? __sys_sendmsg_sock+0x40/0x40
[   24.232960][  T295]  ? __switch_to+0x62a/0x1190
[   24.237475][  T295]  ? import_iovec+0xe5/0x120
[   24.241907][  T295]  ___sys_sendmsg+0x252/0x2e0
[   24.246413][  T295]  ? __sys_sendmsg+0x260/0x260
[   24.251032][  T295]  ? cgroup_leave_frozen+0x164/0x2c0
[   24.256137][  T295]  ? __kasan_check_read+0x11/0x20
[   24.261001][  T295]  ? __fdget+0x179/0x240
[   24.265076][  T295]  __se_sys_sendmsg+0x19a/0x260
[   24.269783][  T295]  ? __x64_sys_sendmsg+0x90/0x90
[   24.274533][  T295]  ? ptrace_notify+0x24c/0x350
[   24.279137][  T295]  ? __kasan_check_write+0x14/0x20
[   24.284091][  T295]  __x64_sys_sendmsg+0x7b/0x90
[   24.288680][  T295]  x64_sys_call+0x16a/0x9a0
[   24.293019][  T295]  do_syscall_64+0x3b/0xb0
[   24.297270][  T295]  ? clear_bhb_loop+0x35/0x90
[   24.301783][  T295]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   24.307515][  T295] RIP: 0033:0x7fae16d03ad9
[   24.311770][  T295] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   24.331209][  T295] RSP: 002b:00007fff77c07718 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.339537][  T295] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fae16d03ad9
[   24.347348][  T295] RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000004
[pid   295] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=0}, 0) = 0
[   24.355161][  T295] RBP: 0000000000000001 R08: 00007fff77c074b7 R09: 00000000000000a0
[   24.362979][  T295] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
[   24.370786][  T295] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
[   24.378600][  T295]  </TASK>
[   24.383376][  T295] ==================================================================
[   24.391255][  T295] BUG: KASAN: use-after-free in consume_skb+0x3c/0x250
[   24.397949][  T295] Read of size 4 at addr ffff88811227feac by task syz-executor696/295
[   24.405920][  T295] 
[   24.408090][  T295] CPU: 1 PID: 295 Comm: syz-executor696 Not tainted 5.15.167-syzkaller-00348-g2e66050fb753 #0
[   24.418158][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[   24.428051][  T295] Call Trace:
[   24.431196][  T295]  <TASK>
[   24.433955][  T295]  dump_stack_lvl+0x151/0x1c0
[   24.438466][  T295]  ? io_uring_drop_tctx_refs+0x190/0x190
[   24.443941][  T295]  ? panic+0x760/0x760
[   24.447841][  T295]  ? __kasan_check_write+0x14/0x20
[   24.452803][  T295]  print_address_description+0x87/0x3b0
[   24.458260][  T295]  ? check_preempt_wakeup+0x677/0xbe0
[   24.463464][  T295]  kasan_report+0x179/0x1c0
[   24.467801][  T295]  ? consume_skb+0x3c/0x250
[   24.472141][  T295]  ? consume_skb+0x3c/0x250
[   24.476479][  T295]  kasan_check_range+0x293/0x2a0
[   24.481264][  T295]  __kasan_check_read+0x11/0x20
[   24.485943][  T295]  consume_skb+0x3c/0x250
[   24.490109][  T295]  __sk_msg_free+0x2dd/0x370
[   24.494543][  T295]  ? _raw_spin_unlock_irqrestore+0x5c/0x80
[   24.500174][  T295]  sk_psock_stop+0x44c/0x4d0
[   24.504602][  T295]  sk_psock_drop+0x219/0x310
[   24.509033][  T295]  sock_map_unref+0x48f/0x4d0
[   24.513539][  T295]  ? __local_bh_enable_ip+0x58/0x80
[   24.518577][  T295]  ? _raw_spin_unlock_bh+0x51/0x60
[   24.523522][  T295]  sock_map_remove_links+0x41c/0x650
[   24.528641][  T295]  ? sock_map_unhash+0x120/0x120
[   24.533414][  T295]  ? locks_remove_posix+0x610/0x610
[   24.538449][  T295]  sock_map_close+0x114/0x530
[   24.542974][  T295]  ? unix_peer_get+0xe0/0xe0
[   24.547388][  T295]  ? sock_map_remove_links+0x650/0x650
[   24.552683][  T295]  ? rwsem_mark_wake+0x770/0x770
[   24.557458][  T295]  unix_release+0x82/0xc0
[   24.561627][  T295]  sock_close+0xdf/0x270
[   24.565710][  T295]  ? sock_mmap+0xa0/0xa0
[   24.569783][  T295]  __fput+0x228/0x8c0
[   24.573608][  T295]  ____fput+0x15/0x20
[   24.577422][  T295]  task_work_run+0x129/0x190
[   24.581848][  T295]  ptrace_notify+0x29e/0x350
[   24.586282][  T295]  ? do_notify_parent+0xa30/0xa30
[   24.591141][  T295]  ? fput_many+0x167/0x1b0
[   24.595385][  T295]  ? fput+0x1a/0x20
[   24.599029][  T295]  ? filp_close+0x106/0x150
[   24.603376][  T295]  ? close_fd+0x74/0x80
[   24.607362][  T295]  syscall_exit_to_user_mode+0xa3/0x160
[   24.612742][  T295]  do_syscall_64+0x47/0xb0
[   24.617035][  T295]  ? clear_bhb_loop+0x35/0x90
[   24.621516][  T295]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   24.627237][  T295] RIP: 0033:0x7fae16d02e10
[   24.631491][  T295] Code: ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 80 3d 91 12 07 00 00 74 17 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c
[   24.650931][  T295] RSP: 002b:00007fff77c07718 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
[   24.659270][  T295] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fae16d02e10
[   24.667070][  T295] RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003
[   24.674882][  T295] RBP: 0000000000000001 R08: 00007fff77c074b7 R09: 00000000000000a0
[   24.682694][  T295] R10: 0000000000000001 R11: 0000000000000202 R12: 0000000000000000
[   24.690508][  T295] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
[   24.698333][  T295]  </TASK>
[   24.701180][  T295] 
[   24.703353][  T295] Allocated by task 295:
[   24.707432][  T295]  __kasan_slab_alloc+0xb1/0xe0
[   24.712116][  T295]  slab_post_alloc_hook+0x53/0x2c0
[   24.717064][  T295]  kmem_cache_alloc+0xf5/0x200
[   24.721665][  T295]  skb_clone+0x1d1/0x360
[   24.725741][  T295]  sk_psock_verdict_recv+0x53/0x840
[   24.730782][  T295]  unix_read_sock+0x132/0x370
[   24.735291][  T295]  sk_psock_verdict_data_ready+0x147/0x1a0
[   24.740932][  T295]  unix_dgram_sendmsg+0x15fa/0x2090
[   24.746055][  T295]  ____sys_sendmsg+0x59e/0x8f0
[   24.750651][  T295]  ___sys_sendmsg+0x252/0x2e0
[   24.755167][  T295]  __se_sys_sendmsg+0x19a/0x260
[   24.759938][  T295]  __x64_sys_sendmsg+0x7b/0x90
[   24.764538][  T295]  x64_sys_call+0x16a/0x9a0
[   24.768878][  T295]  do_syscall_64+0x3b/0xb0
[   24.773133][  T295]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   24.778962][  T295] 
[   24.781132][  T295] Freed by task 20:
[   24.784777][  T295]  kasan_set_track+0x4b/0x70
[   24.789199][  T295]  kasan_set_free_info+0x23/0x40
[   24.793997][  T295]  ____kasan_slab_free+0x126/0x160
[   24.798920][  T295]  __kasan_slab_free+0x11/0x20
[   24.803519][  T295]  slab_free_freelist_hook+0xbd/0x190
[   24.808729][  T295]  kmem_cache_free+0x116/0x2e0
[   24.813328][  T295]  kfree_skbmem+0x104/0x170
[   24.817669][  T295]  kfree_skb+0xc2/0x360
[   24.821660][  T295]  sk_psock_backlog+0xc21/0xd90
[   24.826345][  T295]  process_one_work+0x6bb/0xc10
[   24.831032][  T295]  worker_thread+0xad5/0x12a0
[   24.835546][  T295]  kthread+0x421/0x510
[   24.839452][  T295]  ret_from_fork+0x1f/0x30
[   24.843704][  T295] 
[   24.845878][  T295] The buggy address belongs to the object at ffff88811227fdc0
[   24.845878][  T295]  which belongs to the cache skbuff_head_cache of size 248
[   24.860279][  T295] The buggy address is located 236 bytes inside of
[   24.860279][  T295]  248-byte region [ffff88811227fdc0, ffff88811227feb8)
[   24.873387][  T295] The buggy address belongs to the page:
[   24.878876][  T295] page:ffffea0004489fc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11227f
[   24.888926][  T295] flags: 0x4000000000000200(slab|zone=1)
[   24.894400][  T295] raw: 4000000000000200 0000000000000000 dead000000000122 ffff8881081b2a80
[   24.902819][  T295] raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000
[   24.911252][  T295] page dumped because: kasan: bad access detected
[   24.917487][  T295] page_owner tracks the page as allocated
[   24.923031][  T295] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY), pid 289, ts 24054518389, free_ts 18740556165
[   24.938825][  T295]  post_alloc_hook+0x1a3/0x1b0
[   24.943427][  T295]  prep_new_page+0x1b/0x110
[   24.947763][  T295]  get_page_from_freelist+0x3550/0x35d0
[   24.953148][  T295]  __alloc_pages+0x27e/0x8f0
[   24.957582][  T295]  new_slab+0x9a/0x4e0
[   24.961480][  T295]  ___slab_alloc+0x39e/0x830
[   24.965910][  T295]  __slab_alloc+0x4a/0x90
[   24.970073][  T295]  kmem_cache_alloc+0x134/0x200
[   24.974756][  T295]  skb_clone+0x1d1/0x360
[   24.978839][  T295]  dev_queue_xmit_nit+0x25b/0xa40
[   24.983696][  T295]  dev_hard_start_xmit+0x149/0x620
[   24.988644][  T295]  sch_direct_xmit+0x298/0x9b0
[   24.993242][  T295]  __dev_queue_xmit+0x161e/0x2e70
[   24.998105][  T295]  dev_queue_xmit+0x17/0x20
[   25.002443][  T295]  ip_finish_output2+0xb9f/0xf60
[   25.007215][  T295]  __ip_finish_output+0x162/0x360
[   25.012079][  T295] page last free stack trace:
[   25.016589][  T295]  free_unref_page_prepare+0x7c8/0x7d0
[   25.021883][  T295]  free_unref_page+0xe8/0x750
[   25.026398][  T295]  __free_pages+0x61/0xf0
[   25.030562][  T295]  __vunmap+0x7bc/0x8f0
[   25.034557][  T295]  free_work+0x5b/0x80
[   25.038463][  T295]  process_one_work+0x6bb/0xc10
[   25.043185][  T295]  worker_thread+0xad5/0x12a0
[   25.047660][  T295]  kthread+0x421/0x510
[   25.051566][  T295]  ret_from_fork+0x1f/0x30
[   25.055912][  T295] 
[   25.058076][  T295] Memory state around the buggy address:
[   25.063546][  T295]  ffff88811227fd80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   25.071444][  T295]  ffff88811227fe00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.079345][  T295] >ffff88811227fe80: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc
[   25.087240][  T295]                                   ^
[   25.092447][  T295]  ffff88811227ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.100348][  T295]  ffff88811227ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.108240][  T295] ==================================================================
[   25.116136][  T295] Disabling lock debugging due to kernel taint
[   25.122183][  T295] ==================================================================
[   25.130026][  T295] BUG: KASAN: double-free or invalid-free in kmem_cache_free+0x116/0x2e0
[   25.138273][  T295] 
[   25.140441][  T295] CPU: 1 PID: 295 Comm: syz-executor696 Tainted: G    B             5.15.167-syzkaller-00348-g2e66050fb753 #0
[   25.151896][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
[   25.161794][  T295] Call Trace:
[   25.164918][  T295]  <TASK>
[   25.167695][  T295]  dump_stack_lvl+0x151/0x1c0
[   25.172205][  T295]  ? io_uring_drop_tctx_refs+0x190/0x190
[   25.177673][  T295]  ? __wake_up_klogd+0xd5/0x110
[   25.182360][  T295]  ? panic+0x760/0x760
[   25.186262][  T295]  ? kmem_cache_free+0x116/0x2e0
[   25.191036][  T295]  print_address_description+0x87/0x3b0
[   25.196417][  T295]  ? asm_common_interrupt+0x27/0x40
[   25.201453][  T295]  ? kmem_cache_free+0x116/0x2e0
[   25.206224][  T295]  ? kmem_cache_free+0x116/0x2e0
[   25.211002][  T295]  kasan_report_invalid_free+0x6b/0xa0
[   25.216294][  T295]  ____kasan_slab_free+0x13e/0x160
[   25.221244][  T295]  __kasan_slab_free+0x11/0x20
[   25.225844][  T295]  slab_free_freelist_hook+0xbd/0x190
[   25.231051][  T295]  ? kfree_skbmem+0x104/0x170
[   25.235561][  T295]  kmem_cache_free+0x116/0x2e0
[   25.240164][  T295]  kfree_skbmem+0x104/0x170
[   25.244503][  T295]  consume_skb+0xb4/0x250
[   25.248666][  T295]  __sk_msg_free+0x2dd/0x370
[   25.253094][  T295]  ? _raw_spin_unlock_irqrestore+0x5c/0x80
[   25.258738][  T295]  sk_psock_stop+0x44c/0x4d0
[   25.263163][  T295]  sk_psock_drop+0x219/0x310
[   25.267587][  T295]  sock_map_unref+0x48f/0x4d0
[   25.272099][  T295]  ? __local_bh_enable_ip+0x58/0x80
[   25.277132][  T295]  ? _raw_spin_unlock_bh+0x51/0x60
[   25.282084][  T295]  sock_map_remove_links+0x41c/0x650
[   25.287203][  T295]  ? sock_map_unhash+0x120/0x120
[   25.291974][  T295]  ? locks_remove_posix+0x610/0x610
[   25.297012][  T295]  sock_map_close+0x114/0x530
[   25.301527][  T295]  ? unix_peer_get+0xe0/0xe0
[   25.305949][  T295]  ? sock_map_remove_links+0x650/0x650
[   25.311244][  T295]  ? rwsem_mark_wake+0x770/0x770
[   25.316017][  T295]  unix_release+0x82/0xc0
[   25.320183][  T295]  sock_close+0xdf/0x270
[   25.324275][  T295]  ? sock_mmap+0xa0/0xa0
[   25.328350][  T295]  __fput+0x228/0x8c0
[   25.332183][  T295]  ____fput+0x15/0x20
[   25.335979][  T295]  task_work_run+0x129/0x190
[   25.340407][  T295]  ptrace_notify+0x29e/0x350
[   25.344836][  T295]  ? do_notify_parent+0xa30/0xa30
[   25.349692][  T295]  ? fput_many+0x167/0x1b0
[   25.353950][  T295]  ? fput+0x1a/0x20
[   25.357587][  T295]  ? filp_close+0x106/0x150
[   25.361956][  T295]  ? close_fd+0x74/0x80
[   25.365930][  T295]  syscall_exit_to_user_mode+0xa3/0x160
[   25.371304][  T295]  do_syscall_64+0x47/0xb0
[   25.375558][  T295]  ? clear_bhb_loop+0x35/0x90
[   25.380076][  T295]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.385796][  T295] RIP: 0033:0x7fae16d02e10
[   25.390049][  T295] Code: ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 80 3d 91 12 07 00 00 74 17 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c
[   25.409490][  T295] RSP: 002b:00007fff77c07718 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
[   25.417761][  T295] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fae16d02e10
[   25.425546][  T295] RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003
[   25.433356][  T295] RBP: 0000000000000001 R08: 00007fff77c074b7 R09: 00000000000000a0
[   25.441166][  T295] R10: 0000000000000001 R11: 0000000000000202 R12: 0000000000000000
[   25.448980][  T295] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
[   25.456793][  T295]  </TASK>
[   25.459653][  T295] 
[   25.461830][  T295] Allocated by task 295:
[   25.465912][  T295]  __kasan_slab_alloc+0xb1/0xe0
[   25.470590][  T295]  slab_post_alloc_hook+0x53/0x2c0
[   25.475535][  T295]  kmem_cache_alloc+0xf5/0x200
[   25.480398][  T295]  skb_clone+0x1d1/0x360
[   25.484479][  T295]  sk_psock_verdict_recv+0x53/0x840
[   25.489510][  T295]  unix_read_sock+0x132/0x370
[   25.494018][  T295]  sk_psock_verdict_data_ready+0x147/0x1a0
[   25.499670][  T295]  unix_dgram_sendmsg+0x15fa/0x2090
[   25.504694][  T295]  ____sys_sendmsg+0x59e/0x8f0
[   25.509293][  T295]  ___sys_sendmsg+0x252/0x2e0
[   25.513808][  T295]  __se_sys_sendmsg+0x19a/0x260
[   25.518511][  T295]  __x64_sys_sendmsg+0x7b/0x90
[   25.523105][  T295]  x64_sys_call+0x16a/0x9a0
[   25.527437][  T295]  do_syscall_64+0x3b/0xb0
[   25.531695][  T295]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.537416][  T295] 
[   25.539591][  T295] Freed by task 20:
[   25.543230][  T295]  kasan_set_track+0x4b/0x70
[   25.547655][  T295]  kasan_set_free_info+0x23/0x40
[   25.552437][  T295]  ____kasan_slab_free+0x126/0x160
[   25.557373][  T295]  __kasan_slab_free+0x11/0x20
[   25.562320][  T295]  slab_free_freelist_hook+0xbd/0x190
[   25.567528][  T295]  kmem_cache_free+0x116/0x2e0
[   25.572217][  T295]  kfree_skbmem+0x104/0x170
[   25.576555][  T295]  kfree_skb+0xc2/0x360
[   25.580554][  T295]  sk_psock_backlog+0xc21/0xd90
[   25.585233][  T295]  process_one_work+0x6bb/0xc10
[   25.589923][  T295]  worker_thread+0xad5/0x12a0
[   25.594990][  T295]  kthread+0x421/0x510
[   25.598886][  T295]  ret_from_fork+0x1f/0x30
[   25.603139][  T295] 
[   25.605311][  T295] The buggy address belongs to the object at ffff88811227fdc0
[   25.605311][  T295]  which belongs to the cache skbuff_head_cache of size 248
[   25.619721][  T295] The buggy address is located 0 bytes inside of
[   25.619721][  T295]  248-byte region [ffff88811227fdc0, ffff88811227feb8)
[   25.632651][  T295] The buggy address belongs to the page:
[   25.638121][  T295] page:ffffea0004489fc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11227f
[   25.648455][  T295] flags: 0x4000000000000200(slab|zone=1)
[   25.653920][  T295] raw: 4000000000000200 0000000000000000 dead000000000122 ffff8881081b2a80
[   25.662336][  T295] raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000
[   25.670754][  T295] page dumped because: kasan: bad access detected
[   25.676995][  T295] page_owner tracks the page as allocated
[   25.682551][  T295] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY), pid 289, ts 24054518389, free_ts 18740556165
[   25.698348][  T295]  post_alloc_hook+0x1a3/0x1b0
[   25.702946][  T295]  prep_new_page+0x1b/0x110
[   25.707286][  T295]  get_page_from_freelist+0x3550/0x35d0
[   25.712667][  T295]  __alloc_pages+0x27e/0x8f0
[   25.717118][  T295]  new_slab+0x9a/0x4e0
[   25.721002][  T295]  ___slab_alloc+0x39e/0x830
[   25.725427][  T295]  __slab_alloc+0x4a/0x90
[   25.729588][  T295]  kmem_cache_alloc+0x134/0x200
[   25.734275][  T295]  skb_clone+0x1d1/0x360
[   25.738356][  T295]  dev_queue_xmit_nit+0x25b/0xa40
[   25.743217][  T295]  dev_hard_start_xmit+0x149/0x620
[   25.748164][  T295]  sch_direct_xmit+0x298/0x9b0
[   25.752765][  T295]  __dev_queue_xmit+0x161e/0x2e70
[   25.757623][  T295]  dev_queue_xmit+0x17/0x20
[   25.761962][  T295]  ip_finish_output2+0xb9f/0xf60
[   25.766735][  T295]  __ip_finish_output+0x162/0x360
[   25.771598][  T295] page last free stack trace:
[   25.776111][  T295]  free_unref_page_prepare+0x7c8/0x7d0
[   25.781405][  T295]  free_unref_page+0xe8/0x750
[   25.785917][  T295]  __free_pages+0x61/0xf0
[   25.790081][  T295]  __vunmap+0x7bc/0x8f0
[   25.794075][  T295]  free_work+0x5b/0x80
[   25.797979][  T295]  process_one_work+0x6bb/0xc10
[   25.802665][  T295]  worker_thread+0xad5/0x12a0
[   25.807181][  T295]  kthread+0x421/0x510
[   25.811195][  T295]  ret_from_fork+0x1f/0x30
[   25.815450][  T295] 
[   25.817621][  T295] Memory state around the buggy address:
[   25.823099][  T295]  ffff88811227fc80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.831074][  T295]  ffff88811227fd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc
[   25.838972][  T295] >ffff88811227fd80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   25.846873][  T295]                                            ^
[   25.852857][  T295]  ffff88811227fe00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[pid   295] close(3)                    = 0
[pid   295] close(4)                    = 0
[pid   295] close(5)                    = 0
[pid   295] close(6)                    = 0
[pid   295] close(7)                    = 0
[pid   295] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   295] exit_group(1)               = ?
[pid   295] +++ exited with 1 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=295, si_uid=0, si_status=1, si_utime=0, si_stime=33} ---
exit_group(0)                           = ?
+++ exited with 0 +++
[   25.860756][  T295]  ffff88811227fe8