./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor991509236 <...> Warning: Permanently added '10.128.0.41' (ED25519) to the list of known hosts. execve("./syz-executor991509236", ["./syz-executor991509236"], 0x7ffda7391d80 /* 10 vars */) = 0 brk(NULL) = 0x555573b7a000 brk(0x555573b7ae00) = 0x555573b7ae00 arch_prctl(ARCH_SET_FS, 0x555573b7a480) = 0 set_tid_address(0x555573b7a750) = 5829 set_robust_list(0x555573b7a760, 24) = 0 rseq(0x555573b7ada0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor991509236", 4096) = 27 getrandom("\x3e\x85\x4b\xa4\xe9\x0b\x87\x89", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555573b7ae00 brk(0x555573b9be00) = 0x555573b9be00 brk(0x555573b9c000) = 0x555573b9c000 mprotect(0x7f6634b69000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f6634ab5940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f6634abe130}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f6634ab5940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f6634abe130}, NULL, 8) = 0 mkdir("./syzkaller.0ttWkF", 0700) = 0 chmod("./syzkaller.0ttWkF", 0777) = 0 chdir("./syzkaller.0ttWkF") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5830 attached , child_tidptr=0x555573b7a750) = 5830 [pid 5830] set_robust_list(0x555573b7a760, 24) = 0 [pid 5830] chdir("./0") = 0 [pid 5830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5830] setpgid(0, 0) = 0 [pid 5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5830] write(3, "1000", 4) = 4 [pid 5830] close(3) = 0 [pid 5830] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5830] write(1, "executing program\n", 18) = 18 [pid 5830] memfd_create("syzkaller", 0) = 3 [pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f662c600000 [pid 5830] write(3, "\xb5\x84\x31\x7b\xb6\x84\x31\x7b\xb7\x84\x31\x7b\xb8\x84\x31\x7b\xb9\x84\x31\x7b\xba\x84\x31\x7b\xbb\x84\x31\x7b\xbc\x84\x31\x7b\xbd\x84\x31\x7b\xbe\x84\x31\x7b\xbf\x84\x31\x7b\xc0\x84\x31\x7b\xc1\x84\x31\x7b\xc2\x84\x31\x7b\xc3\x84\x31\x7b\xc4\x84\x31\x7b\xc5\x84\x31\x7b\xc6\x84\x31\x7b\xc7\x84\x31\x7b\xc8\x84\x31\x7b\xc9\x84\x31\x7b\xca\x84\x31\x7b\xcb\x84\x31\x7b\xcc\x84\x31\x7b\xcd\x84\x31\x7b"..., 65536) = 65536 [pid 5830] munmap(0x7f662c600000, 138412032) = 0 [pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5830] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5830] close(3) = 0 [pid 5830] close(4) = 0 [pid 5830] mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = 0 [ 59.714088][ T5830] loop0: detected capacity change from 0 to 128 [pid 5830] mount("/dev/loop0", "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", "sysv", 0, "") = 0 [pid 5830] openat(AT_FDCWD, "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", O_RDONLY|O_DIRECTORY) = 3 [pid 5830] chdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f") = 0 [pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 59.761116][ T5830] VFS: Found a Xenix FS (block size = 1024) on device loop0 [ 59.793325][ T5830] syz-executor991: attempt to access beyond end of device [ 59.793325][ T5830] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [pid 5830] mknodat(AT_FDCWD, "./file0", S_IFIFO|S_ISGID|010) = -1 EIO (Input/output error) [pid 5830] exit_group(0) = ? [pid 5830] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5830, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555573b7b7f0 /* 4 entries */, 32768) = 176 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 [ 59.807628][ T5830] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 59.829118][ T5830] syz-executor991: attempt to access beyond end of device [ 59.829118][ T5830] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 59.843110][ T5830] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 59.886634][ T5829] sysv_free_block: flc_count > flc_size [ 59.892307][ T5829] sysv_free_block: flc_count > flc_size [ 59.897991][ T5829] sysv_free_block: flc_count > flc_size [ 59.903632][ T5829] sysv_free_block: flc_count > flc_size [ 59.909199][ T5829] sysv_free_block: flc_count > flc_size [ 59.914802][ T5829] sysv_free_block: flc_count > flc_size [ 59.920371][ T5829] sysv_free_block: flc_count > flc_size [ 59.926006][ T5829] sysv_free_block: flc_count > flc_size [ 59.931572][ T5829] sysv_free_block: flc_count > flc_size umount2("\x2e\x2f\x30\x2f\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("\x2e\x2f\x30\x2f\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "\x2e\x2f\x30\x2f\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("\x2e\x2f\x30\x2f\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 59.937185][ T5829] sysv_free_block: flc_count > flc_size [ 59.943294][ T5829] sysv_free_inode: inode 0,1,2 or nonexistent inode openat(AT_FDCWD, "\x2e\x2f\x30\x2f\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x555573b83830 /* 2 entries */, 32768) = 48 getdents64(4, 0x555573b83830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("\x2e\x2f\x30\x2f\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38") = 0 getdents64(3, 0x555573b7b7f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5832 attached [pid 5832] set_robust_list(0x555573b7a760, 24 [pid 5829] <... clone resumed>, child_tidptr=0x555573b7a750) = 5832 [pid 5832] <... set_robust_list resumed>) = 0 [pid 5832] chdir("./1") = 0 [pid 5832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5832] setpgid(0, 0) = 0 [pid 5832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5832] write(3, "1000", 4) = 4 [pid 5832] close(3) = 0 [pid 5832] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5832] write(1, "executing program\n", 18) = 18 [pid 5832] memfd_create("syzkaller", 0) = 3 [pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f662c600000 [pid 5832] write(3, "\xb5\x84\x31\x7b\xb6\x84\x31\x7b\xb7\x84\x31\x7b\xb8\x84\x31\x7b\xb9\x84\x31\x7b\xba\x84\x31\x7b\xbb\x84\x31\x7b\xbc\x84\x31\x7b\xbd\x84\x31\x7b\xbe\x84\x31\x7b\xbf\x84\x31\x7b\xc0\x84\x31\x7b\xc1\x84\x31\x7b\xc2\x84\x31\x7b\xc3\x84\x31\x7b\xc4\x84\x31\x7b\xc5\x84\x31\x7b\xc6\x84\x31\x7b\xc7\x84\x31\x7b\xc8\x84\x31\x7b\xc9\x84\x31\x7b\xca\x84\x31\x7b\xcb\x84\x31\x7b\xcc\x84\x31\x7b\xcd\x84\x31\x7b"..., 65536) = 65536 [pid 5832] munmap(0x7f662c600000, 138412032) = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5832] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5832] close(3) = 0 [pid 5832] close(4) = 0 [pid 5832] mkdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", 0777) = 0 [ 60.239581][ T5832] loop0: detected capacity change from 0 to 128 [pid 5832] mount("/dev/loop0", "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", "sysv", 0, "") = 0 [pid 5832] openat(AT_FDCWD, "\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f", O_RDONLY|O_DIRECTORY) = 3 [pid 5832] chdir("\x13\x13\x77\xc5\xfc\x35\xd4\x14\x54\xd5\xd4\x1d\x29\xad\x1a\x60\x29\x59\x81\x46\xe6\xbe\x16\x6e\x41\xad\x0d\xbd\x40\x54\x03\x3c\x9f\x33\xbb\xda\x82\x24\xa2\xf3\xd7\x72\xe7\x63\x6e\x48\xb3\x3c\xbf\x70\x83\x72\xe8\xf1\xb9\x93\x3e\xc5\x12\x77\x43\xbe\x22\x06\x20\x9e\xf0\x2d\xf9\xcb\xf2\xf6\xe8\x80\xd3\x38\x2f") = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 60.295155][ T5832] VFS: Found a Xenix FS (block size = 1024) on device loop0 [ 60.326653][ T5832] syz-executor991: attempt to access beyond end of device [ 60.326653][ T5832] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 60.340736][ T5832] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 60.349459][ T5832] ================================================================== [ 60.357528][ T5832] BUG: KASAN: use-after-free in sysv_new_inode+0xfc7/0x1160 [ 60.364851][ T5832] Read of size 2 at addr ffff8880747701ce by task syz-executor991/5832 [ 60.373077][ T5832] [ 60.375408][ T5832] CPU: 1 UID: 0 PID: 5832 Comm: syz-executor991 Not tainted 6.12.0-rc7-syzkaller-00187-gf868cd251776 #0 [ 60.386508][ T5832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 60.396567][ T5832] Call Trace: [ 60.399841][ T5832] [ 60.402764][ T5832] dump_stack_lvl+0x241/0x360 [ 60.407448][ T5832] ? __pfx_dump_stack_lvl+0x10/0x10 [ 60.412641][ T5832] ? __pfx__printk+0x10/0x10 [ 60.417241][ T5832] ? _printk+0xd5/0x120 [ 60.421410][ T5832] ? __virt_addr_valid+0x183/0x530 [ 60.426525][ T5832] ? __virt_addr_valid+0x183/0x530 [ 60.431636][ T5832] print_report+0x169/0x550 [ 60.436143][ T5832] ? __virt_addr_valid+0x183/0x530 [ 60.441266][ T5832] ? __virt_addr_valid+0x183/0x530 [ 60.446372][ T5832] ? __virt_addr_valid+0x45f/0x530 [ 60.451473][ T5832] ? __phys_addr+0xba/0x170 [ 60.455966][ T5832] ? sysv_new_inode+0xfc7/0x1160 [ 60.460893][ T5832] kasan_report+0x143/0x180 [ 60.465398][ T5832] ? sysv_new_inode+0xfc7/0x1160 [ 60.470327][ T5832] sysv_new_inode+0xfc7/0x1160 [ 60.475091][ T5832] ? __d_add+0x4d7/0x800 [ 60.479327][ T5832] ? __pfx_sysv_new_inode+0x10/0x10 [ 60.484528][ T5832] ? generic_permission+0x241/0x550 [ 60.489720][ T5832] sysv_mknod+0x4e/0xe0 [ 60.493871][ T5832] vfs_mknod+0x36d/0x3b0 [ 60.498109][ T5832] do_mknodat+0x3ec/0x5b0 [ 60.502427][ T5832] ? __pfx_do_mknodat+0x10/0x10 [ 60.507267][ T5832] ? getname_flags+0x1e3/0x540 [ 60.512020][ T5832] __x64_sys_mknodat+0xa7/0xc0 [ 60.516777][ T5832] do_syscall_64+0xf3/0x230 [ 60.521272][ T5832] ? clear_bhb_loop+0x35/0x90 [ 60.525942][ T5832] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 60.531827][ T5832] RIP: 0033:0x7f6634aeb569 [ 60.536244][ T5832] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 60.555883][ T5832] RSP: 002b:00007ffd94d68a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 [ 60.564326][ T5832] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6634aeb569 [ 60.572298][ T5832] RDX: 0000000000001408 RSI: 0000000020000080 RDI: 00000000ffffff9c [ 60.580272][ T5832] RBP: 0000000000000000 R08: 0000000000009e87 R09: 00007ffd94d68a9c [ 60.588501][ T5832] R10: 0000000000000103 R11: 0000000000000246 R12: 00007ffd94d68a9c [ 60.596482][ T5832] R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007ffd94d68ad0 [ 60.604470][ T5832] [ 60.607487][ T5832] [ 60.609798][ T5832] The buggy address belongs to the physical page: [ 60.616382][ T5832] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x558c5a32f pfn:0x74770 [ 60.625837][ T5832] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 60.632945][ T5832] page_type: f0(buddy) [ 60.637005][ T5832] raw: 00fff00000000000 ffffea0001cdcb08 ffffea0001df5a08 0000000000000000 [ 60.645581][ T5832] raw: 0000000558c5a32f 0000000000000002 00000000f0000000 0000000000000000 [ 60.654183][ T5832] page dumped because: kasan: bad access detected [ 60.660593][ T5832] page_owner tracks the page as freed [ 60.665947][ T5832] page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 5820, tgid 5820 (sftp-server), ts 51749145261, free_ts 53401469230 [ 60.684518][ T5832] post_alloc_hook+0x1f3/0x230 [ 60.689281][ T5832] get_page_from_freelist+0x363e/0x3790 [ 60.694824][ T5832] __alloc_pages_noprof+0x292/0x710 [ 60.700016][ T5832] alloc_pages_mpol_noprof+0x3e8/0x680 [ 60.705468][ T5832] vma_alloc_folio_noprof+0x12e/0x230 [ 60.710827][ T5832] folio_prealloc+0x31/0x170 [ 60.715414][ T5832] handle_pte_fault+0x24dd/0x6820 [ 60.720434][ T5832] handle_mm_fault+0x1053/0x1ad0 [ 60.725364][ T5832] exc_page_fault+0x459/0x8c0 [ 60.730031][ T5832] asm_exc_page_fault+0x26/0x30 [ 60.734873][ T5832] page last free pid 5820 tgid 5820 stack trace: [ 60.741191][ T5832] free_unref_folios+0xf21/0x1a10 [ 60.746206][ T5832] folios_put_refs+0x76c/0x860 [ 60.750961][ T5832] free_pages_and_swap_cache+0x2ea/0x690 [ 60.756590][ T5832] tlb_flush_mmu+0x3a3/0x680 [ 60.761176][ T5832] tlb_finish_mmu+0xd4/0x200 [ 60.765761][ T5832] exit_mmap+0x496/0xc40 [ 60.770015][ T5832] __mmput+0x115/0x380 [ 60.774088][ T5832] exit_mm+0x220/0x310 [ 60.778154][ T5832] do_exit+0x9b2/0x28e0 [ 60.782308][ T5832] do_group_exit+0x207/0x2c0 [ 60.786897][ T5832] __x64_sys_exit_group+0x3f/0x40 [ 60.791923][ T5832] x64_sys_call+0x2634/0x2640 [ 60.796599][ T5832] do_syscall_64+0xf3/0x230 [ 60.801100][ T5832] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 60.806986][ T5832] [ 60.809301][ T5832] Memory state around the buggy address: [ 60.814922][ T5832] ffff888074770080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 60.822969][ T5832] ffff888074770100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 60.831019][ T5832] >ffff888074770180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 60.839064][ T5832] ^ [ 60.845466][ T5832] ffff888074770200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 60.853515][ T5832] ffff888074770280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 60.861559][ T5832] ================================================================== [ 60.870770][ T5832] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 60.877988][ T5832] CPU: 1 UID: 0 PID: 5832 Comm: syz-executor991 Not tainted 6.12.0-rc7-syzkaller-00187-gf868cd251776 #0 [ 60.889113][ T5832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 [ 60.899164][ T5832] Call Trace: [ 60.902435][ T5832] [ 60.905361][ T5832] dump_stack_lvl+0x241/0x360 [ 60.910038][ T5832] ? __pfx_dump_stack_lvl+0x10/0x10 [ 60.915232][ T5832] ? __pfx__printk+0x10/0x10 [ 60.919813][ T5832] ? preempt_schedule+0xe1/0xf0 [ 60.924659][ T5832] ? vscnprintf+0x5d/0x90 [ 60.928982][ T5832] panic+0x349/0x880 [ 60.932870][ T5832] ? check_panic_on_warn+0x21/0xb0 [ 60.938000][ T5832] ? __pfx_panic+0x10/0x10 [ 60.942409][ T5832] ? _raw_spin_unlock_irqrestore+0x130/0x140 [ 60.948384][ T5832] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 60.954703][ T5832] ? print_report+0x502/0x550 [ 60.959375][ T5832] check_panic_on_warn+0x86/0xb0 [ 60.964306][ T5832] ? sysv_new_inode+0xfc7/0x1160 [ 60.969233][ T5832] end_report+0x77/0x160 [ 60.973470][ T5832] kasan_report+0x154/0x180 [ 60.977970][ T5832] ? sysv_new_inode+0xfc7/0x1160 [ 60.982985][ T5832] sysv_new_inode+0xfc7/0x1160 [ 60.987745][ T5832] ? __d_add+0x4d7/0x800 [ 60.991983][ T5832] ? __pfx_sysv_new_inode+0x10/0x10 [ 60.997184][ T5832] ? generic_permission+0x241/0x550 [ 61.002378][ T5832] sysv_mknod+0x4e/0xe0 [ 61.006525][ T5832] vfs_mknod+0x36d/0x3b0 [ 61.010773][ T5832] do_mknodat+0x3ec/0x5b0 [ 61.015097][ T5832] ? __pfx_do_mknodat+0x10/0x10 [ 61.019952][ T5832] ? getname_flags+0x1e3/0x540 [ 61.024706][ T5832] __x64_sys_mknodat+0xa7/0xc0 [ 61.029464][ T5832] do_syscall_64+0xf3/0x230 [ 61.033961][ T5832] ? clear_bhb_loop+0x35/0x90 [ 61.038633][ T5832] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 61.044519][ T5832] RIP: 0033:0x7f6634aeb569 [ 61.048929][ T5832] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 61.068526][ T5832] RSP: 002b:00007ffd94d68a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 [ 61.076942][ T5832] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6634aeb569 [ 61.084907][ T5832] RDX: 0000000000001408 RSI: 0000000020000080 RDI: 00000000ffffff9c [ 61.092870][ T5832] RBP: 0000000000000000 R08: 0000000000009e87 R09: 00007ffd94d68a9c [ 61.100830][ T5832] R10: 0000000000000103 R11: 0000000000000246 R12: 00007ffd94d68a9c [ 61.108791][ T5832] R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007ffd94d68ad0 [ 61.116758][ T5832] [ 61.120041][ T5832] Kernel Offset: disabled [ 61.124362][ T5832] Rebooting in 86400 seconds..