./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor511657243 <...> Warning: Permanently added '10.128.1.54' (ED25519) to the list of known hosts. execve("./syz-executor511657243", ["./syz-executor511657243"], 0x7ffdb632e8a0 /* 10 vars */) = 0 brk(NULL) = 0x555555b41000 brk(0x555555b41d00) = 0x555555b41d00 arch_prctl(ARCH_SET_FS, 0x555555b41380) = 0 set_tid_address(0x555555b41650) = 5020 set_robust_list(0x555555b41660, 24) = 0 rseq(0x555555b41ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor511657243", 4096) = 27 getrandom("\x19\x1d\xe8\x7b\xaa\xaa\xc5\xfe", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555b41d00 brk(0x555555b62d00) = 0x555555b62d00 brk(0x555555b63000) = 0x555555b63000 mprotect(0x7f8e1f03a000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b41650) = 5021 ./strace-static-x86_64: Process 5021 attached [pid 5021] set_robust_list(0x555555b41660, 24) = 0 [pid 5021] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5021] setsid() = 1 [pid 5021] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5021] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5021] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5021] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5021] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5021] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5021] unshare(CLONE_NEWNS) = 0 [pid 5021] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5021] unshare(CLONE_NEWIPC) = 0 [pid 5021] unshare(CLONE_NEWCGROUP) = 0 [pid 5021] unshare(CLONE_NEWUTS) = 0 [pid 5021] unshare(CLONE_SYSVSEM) = 0 [pid 5021] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "16777216", 8) = 8 [pid 5021] close(3) = 0 [pid 5021] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "536870912", 9) = 9 [pid 5021] close(3) = 0 [pid 5021] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "1024", 4) = 4 [pid 5021] close(3) = 0 [pid 5021] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "8192", 4) = 4 [pid 5021] close(3) = 0 [pid 5021] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "1024", 4) = 4 [pid 5021] close(3) = 0 [pid 5021] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "1024", 4) = 4 [pid 5021] close(3) = 0 [pid 5021] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5021] close(3) = 0 [pid 5021] getpid() = 1 [pid 5021] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b41650) = 4 ./strace-static-x86_64: Process 5026 attached [pid 5026] set_robust_list(0x555555b41660, 24) = 0 [pid 5026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5026] setpgid(0, 0) = 0 [pid 5026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5026] write(3, "1000", 4) = 4 [pid 5026] close(3) = 0 [pid 5026] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5026] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5026] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=4, si_uid=0} --- [ 150.015413][ T27] audit: type=1800 audit(1709518622.791:4): pid=5026 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor511" name="bus" dev="sda1" ino=1928 res=0 errno=0 [pid 5026] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=4, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b41650) = 5 ./strace-static-x86_64: Process 5027 attached [pid 5027] set_robust_list(0x555555b41660, 24) = 0 [pid 5027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5027] setpgid(0, 0) = 0 [pid 5027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5027] write(3, "1000", 4) = 4 [pid 5027] close(3) = 0 [pid 5027] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5027] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5027] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=5, si_uid=0} --- [ 150.223052][ T27] audit: type=1800 audit(1709518623.001:5): pid=5027 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor511" name="bus" dev="sda1" ino=1928 res=0 errno=0 [pid 5027] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=5, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5021] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5028 attached , child_tidptr=0x555555b41650) = 6 [pid 5028] set_robust_list(0x555555b41660, 24) = 0 [pid 5028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5028] setpgid(0, 0) = 0 [pid 5028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "1000", 4) = 4 [pid 5028] close(3) = 0 [pid 5028] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5028] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5028] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=6, si_uid=0} --- [ 150.430731][ T27] audit: type=1800 audit(1709518623.201:6): pid=5028 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor511" name="bus" dev="sda1" ino=1928 res=0 errno=0 [pid 5028] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=6, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=19 /* 0.19 s */} --- [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5029 attached , child_tidptr=0x555555b41650) = 7 [pid 5029] set_robust_list(0x555555b41660, 24) = 0 [pid 5029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5029] setpgid(0, 0) = 0 [pid 5029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5029] write(3, "1000", 4) = 4 [pid 5029] close(3) = 0 [pid 5029] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5029] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5029] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=7, si_uid=0} --- [ 150.641563][ T27] audit: type=1800 audit(1709518623.411:7): pid=5029 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor511" name="bus" dev="sda1" ino=1928 res=0 errno=0 [pid 5029] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=7, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5030 attached , child_tidptr=0x555555b41650) = 8 [pid 5030] set_robust_list(0x555555b41660, 24) = 0 [pid 5030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5030] setpgid(0, 0) = 0 [pid 5030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5030] write(3, "1000", 4) = 4 [pid 5030] close(3) = 0 [pid 5030] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5030] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5030] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=8, si_uid=0} --- [ 150.839475][ T27] audit: type=1800 audit(1709518623.621:8): pid=5030 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor511" name="bus" dev="sda1" ino=1928 res=0 errno=0 [pid 5030] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=8, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5021] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5031 attached , child_tidptr=0x555555b41650) = 9 [pid 5031] set_robust_list(0x555555b41660, 24) = 0 [pid 5031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5031] setpgid(0, 0) = 0 [pid 5031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5031] write(3, "1000", 4) = 4 [pid 5031] close(3) = 0 [pid 5031] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5031] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5031] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=9, si_uid=0} --- [ 151.043430][ T27] audit: type=1800 audit(1709518623.831:9): pid=5031 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor511" name="bus" dev="sda1" ino=1928 res=0 errno=0 [pid 5031] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=9, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5021] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5032 attached , child_tidptr=0x555555b41650) = 10 [pid 5032] set_robust_list(0x555555b41660, 24) = 0 [pid 5032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5032] setpgid(0, 0) = 0 [pid 5032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5032] write(3, "1000", 4) = 4 [pid 5032] close(3) = 0 [pid 5032] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5032] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5032] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=10, si_uid=0} --- [ 151.254318][ T27] audit: type=1800 audit(1709518624.041:10): pid=5032 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor511" name="bus" dev="sda1" ino=1928 res=0 errno=0 [pid 5032] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=10, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5021] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5033 attached , child_tidptr=0x555555b41650) = 11 [pid 5033] set_robust_list(0x555555b41660, 24) = 0 [pid 5033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5033] setpgid(0, 0) = 0 [pid 5033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5033] write(3, "1000", 4) = 4 [pid 5033] close(3) = 0 [pid 5033] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5033] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5033] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=11, si_uid=0} --- [ 151.457406][ T27] audit: type=1800 audit(1709518624.241:11): pid=5033 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor511" name="bus" dev="sda1" ino=1928 res=0 errno=0 [pid 5033] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=11, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5034 attached , child_tidptr=0x555555b41650) = 12 [pid 5034] set_robust_list(0x555555b41660, 24) = 0 [pid 5034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5034] setpgid(0, 0) = 0 [pid 5034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5034] write(3, "1000", 4) = 4 [pid 5034] close(3) = 0 [pid 5034] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5034] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5034] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=12, si_uid=0} --- [pid 5034] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=12, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5035 attached , child_tidptr=0x555555b41650) = 13 [pid 5035] set_robust_list(0x555555b41660, 24) = 0 [pid 5035] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5035] setpgid(0, 0) = 0 [pid 5035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "1000", 4) = 4 [pid 5035] close(3) = 0 [pid 5035] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5035] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5035] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=13, si_uid=0} --- [pid 5035] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=13, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5021] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b41650) = 14 ./strace-static-x86_64: Process 5036 attached [pid 5036] set_robust_list(0x555555b41660, 24) = 0 [pid 5036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5036] setpgid(0, 0) = 0 [pid 5036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "1000", 4) = 4 [pid 5036] close(3) = 0 [pid 5036] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5036] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5036] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=14, si_uid=0} --- [pid 5036] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=14, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5021] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5037 attached , child_tidptr=0x555555b41650) = 15 [pid 5037] set_robust_list(0x555555b41660, 24) = 0 [pid 5037] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5037] setpgid(0, 0) = 0 [pid 5037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5037] write(3, "1000", 4) = 4 [pid 5037] close(3) = 0 [pid 5037] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5037] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5037] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=15, si_uid=0} --- [pid 5037] +++ killed by SIGXFSZ (core dumped) +++ [pid 5021] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_DUMPED, si_pid=15, si_uid=0, si_status=SIGXFSZ, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5021] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5021] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5038 attached , child_tidptr=0x555555b41650) = 16 [pid 5038] set_robust_list(0x555555b41660, 24) = 0 [pid 5038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5038] setpgid(0, 0) = 0 [pid 5038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5038] write(3, "1000", 4) = 4 [pid 5038] close(3) = 0 [pid 5038] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 3 [pid 5038] ftruncate(3, 2147483653) = -1 EFBIG (File too large) [pid 5038] --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=16, si_uid=0} --- [ 152.642381][ T52] ===================================================== [ 152.649678][ T52] BUG: KMSAN: uninit-value in virtqueue_add+0x21c8/0x6530 [ 152.656988][ T52] virtqueue_add+0x21c8/0x6530 [ 152.661935][ T52] virtqueue_add_sgs+0x186/0x1a0 [ 152.667058][ T52] virtscsi_add_cmd+0x838/0xad0 [ 152.672096][ T52] virtscsi_queuecommand+0x898/0xa60 [ 152.677559][ T52] scsi_queue_rq+0x4cdd/0x5a80 [ 152.682494][ T52] blk_mq_dispatch_rq_list+0x144f/0x3a40 [ 152.688295][ T52] __blk_mq_sched_dispatch_requests+0x11a8/0x26d0 [ 152.694934][ T52] blk_mq_sched_dispatch_requests+0x12f/0x260 [ 152.701287][ T52] blk_mq_run_work_fn+0xd0/0x280 [ 152.706399][ T52] process_scheduled_works+0x1132/0x1f40 [ 152.712189][ T52] worker_thread+0xea4/0x1560 [ 152.717008][ T52] kthread+0x3ed/0x550 [ 152.721249][ T52] ret_from_fork+0x66/0x80 [ 152.725844][ T52] ret_from_fork_asm+0x11/0x20 [ 152.730784][ T52] [ 152.733182][ T52] Uninit was created at: [ 152.737624][ T52] __alloc_pages+0x9a6/0xe00 [ 152.742361][ T52] alloc_pages_mpol+0x62b/0x9d0 [ 152.747369][ T52] folio_alloc+0x1da/0x380 [ 152.751935][ T52] filemap_alloc_folio+0xa5/0x430 [ 152.757155][ T52] __filemap_get_folio+0x9aa/0x13f0 [ 152.762552][ T52] ext4_da_write_begin+0x7f8/0xec0 [ 152.767846][ T52] generic_perform_write+0x3f5/0xc40 [ 152.773287][ T52] ext4_buffered_write_iter+0x564/0xaa0 [ 152.779024][ T52] ext4_file_write_iter+0x20f/0x3470 [ 152.784498][ T52] __kernel_write_iter+0x686/0xc30 [ 152.789775][ T52] dump_user_range+0x593/0xcd0 [ 152.794721][ T52] elf_core_dump+0x5294/0x5a40 [ 152.799638][ T52] do_coredump+0x32c9/0x4920 [ 152.804400][ T52] get_signal+0x21fa/0x2d80 [ 152.809077][ T52] arch_do_signal_or_restart+0x53/0xca0 [ 152.814776][ T52] syscall_exit_to_user_mode+0x5c/0x160 [ 152.820521][ T52] do_syscall_64+0xdc/0x1e0 [ 152.825176][ T52] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 152.831260][ T52] [ 152.833651][ T52] Bytes 0-4095 of 4096 are uninitialized [ 152.839381][ T52] Memory access of size 4096 starts at ffff88812f273000 [ 152.846418][ T52] [ 152.848813][ T52] CPU: 1 PID: 52 Comm: kworker/1:1H Not tainted 6.8.0-rc6-syzkaller-00278-g58c806d867bf #0 [ 152.858945][ T52] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 152.869126][ T52] Workqueue: kblockd blk_mq_run_work_fn [ 152.874858][ T52] ===================================================== [ 152.881872][ T52] Disabling lock debugging due to kernel taint [ 152.888107][ T52] Kernel panic - not syncing: kmsan.panic set ... [ 152.894620][ T52] CPU: 1 PID: 52 Comm: kworker/1:1H Tainted: G B 6.8.0-rc6-syzkaller-00278-g58c806d867bf #0 [ 152.906229][ T52] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 152.916409][ T52] Workqueue: kblockd blk_mq_run_work_fn [ 152.922147][ T52] Call Trace: [ 152.925513][ T52] [ 152.928538][ T52] dump_stack_lvl+0x1bf/0x240 [ 152.933381][ T52] dump_stack+0x1e/0x20 [ 152.937684][ T52] panic+0x4de/0xc90 [ 152.941783][ T52] kmsan_report+0x2d0/0x2d0 [ 152.946450][ T52] ? kmsan_internal_check_memory+0x485/0x550 [ 152.952645][ T52] ? kmsan_handle_dma+0xac/0xc0 [ 152.957640][ T52] ? virtqueue_add+0x21c8/0x6530 [ 152.962761][ T52] ? virtqueue_add_sgs+0x186/0x1a0 [ 152.968058][ T52] ? virtscsi_add_cmd+0x838/0xad0 [ 152.973267][ T52] ? virtscsi_queuecommand+0x898/0xa60 [ 152.978910][ T52] ? scsi_queue_rq+0x4cdd/0x5a80 [ 152.984029][ T52] ? blk_mq_dispatch_rq_list+0x144f/0x3a40 [ 152.990004][ T52] ? __blk_mq_sched_dispatch_requests+0x11a8/0x26d0 [ 152.996798][ T52] ? blk_mq_sched_dispatch_requests+0x12f/0x260 [ 153.003240][ T52] ? blk_mq_run_work_fn+0xd0/0x280 [ 153.008521][ T52] ? process_scheduled_works+0x1132/0x1f40 [ 153.014492][ T52] ? worker_thread+0xea4/0x1560 [ 153.019492][ T52] ? kthread+0x3ed/0x550 [ 153.023912][ T52] ? ret_from_fork+0x66/0x80 [ 153.028676][ T52] ? ret_from_fork_asm+0x11/0x20 [ 153.033789][ T52] ? kmsan_get_metadata+0x146/0x1c0 [ 153.039144][ T52] ? kmsan_get_metadata+0x146/0x1c0 [ 153.044496][ T52] ? kmsan_get_metadata+0x146/0x1c0 [ 153.049856][ T52] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.055823][ T52] ? kmsan_get_metadata+0x146/0x1c0 [ 153.061173][ T52] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.067144][ T52] ? kmsan_get_metadata+0x146/0x1c0 [ 153.072498][ T52] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.078469][ T52] ? iowrite16+0x38/0x1e0 [ 153.082960][ T52] kmsan_internal_check_memory+0x485/0x550 [ 153.088994][ T52] kmsan_handle_dma+0xac/0xc0 [ 153.093819][ T52] virtqueue_add+0x21c8/0x6530 [ 153.098765][ T52] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.104734][ T52] ? kmsan_get_metadata+0x146/0x1c0 [ 153.110104][ T52] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.116121][ T52] virtqueue_add_sgs+0x186/0x1a0 [ 153.121276][ T52] virtscsi_add_cmd+0x838/0xad0 [ 153.126367][ T52] virtscsi_queuecommand+0x898/0xa60 [ 153.131872][ T52] ? virtscsi_kick_event_all+0x3f0/0x3f0 [ 153.137704][ T52] scsi_queue_rq+0x4cdd/0x5a80 [ 153.142690][ T52] ? scsi_complete+0x480/0x480 [ 153.147638][ T52] blk_mq_dispatch_rq_list+0x144f/0x3a40 [ 153.153469][ T52] ? kmsan_get_metadata+0x146/0x1c0 [ 153.158843][ T52] ? dd_dispatch_request+0x9b1/0xa20 [ 153.164290][ T52] __blk_mq_sched_dispatch_requests+0x11a8/0x26d0 [ 153.170927][ T52] ? finish_task_switch+0x1c9/0x8d0 [ 153.176319][ T52] ? __blk_mq_sched_dispatch_requests+0xfd1/0x26d0 [ 153.183048][ T52] blk_mq_sched_dispatch_requests+0x12f/0x260 [ 153.189329][ T52] blk_mq_run_work_fn+0xd0/0x280 [ 153.194444][ T52] ? blk_mq_alloc_and_init_hctx+0x18b0/0x18b0 [ 153.200700][ T52] process_scheduled_works+0x1132/0x1f40 [ 153.206528][ T52] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.212550][ T52] worker_thread+0xea4/0x1560 [ 153.217387][ T52] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.223401][ T52] kthread+0x3ed/0x550 [ 153.227669][ T52] ? pr_cont_work+0xce0/0xce0 [ 153.232506][ T52] ? kthread_blkcg+0x120/0x120 [ 153.237465][ T52] ret_from_fork+0x66/0x80 [ 153.242062][ T52] ? kthread_blkcg+0x120/0x120 [ 153.247014][ T52] ret_from_fork_asm+0x11/0x20 [ 153.251973][ T52] [ 154.674369][ T52] Shutting down cpus with NMI [ 154.679543][ T52] Kernel Offset: disabled [ 154.683923][ T52] Rebooting in 86400 seconds..