./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1688413691 <...> Warning: Permanently added '10.128.0.89' (ED25519) to the list of known hosts. execve("./syz-executor1688413691", ["./syz-executor1688413691"], 0x7fff506912b0 /* 10 vars */) = 0 brk(NULL) = 0x555593abc000 brk(0x555593abcd00) = 0x555593abcd00 arch_prctl(ARCH_SET_FS, 0x555593abc380) = 0 set_tid_address(0x555593abc650) = 5821 set_robust_list(0x555593abc660, 24) = 0 rseq(0x555593abcca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1688413691", 4096) = 28 getrandom("\xd3\x26\x66\xdc\x22\x65\xae\x05", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555593abcd00 brk(0x555593addd00) = 0x555593addd00 brk(0x555593ade000) = 0x555593ade000 mprotect(0x7f6e9a83e000, 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 mkdir("./syzkaller.vp0S4K", 0700) = 0 chmod("./syzkaller.vp0S4K", 0777) = 0 chdir("./syzkaller.vp0S4K") = 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 5822 attached [pid 5822] set_robust_list(0x555593abc660, 24 [pid 5821] <... clone resumed>, child_tidptr=0x555593abc650) = 5822 [pid 5822] <... set_robust_list resumed>) = 0 [pid 5822] chdir("./0") = 0 [pid 5822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5822] setpgid(0, 0) = 0 [pid 5822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5822] write(3, "1000", 4) = 4 [pid 5822] close(3) = 0 [pid 5822] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5822] write(1, "executing program\n", 18) = 18 [pid 5822] memfd_create("syzkaller", 0) = 3 [pid 5822] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6e92200000 [pid 5822] 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 5822] munmap(0x7f6e92200000, 138412032) = 0 [pid 5822] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5822] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5822] close(3) = 0 [pid 5822] close(4) = 0 [pid 5822] 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 [pid 5822] 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 5822] 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 5822] 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 [ 79.384065][ T5822] loop0: detected capacity change from 0 to 128 [ 79.413252][ T5822] VFS: Found a Xenix FS (block size = 1024) on device loop0 [pid 5822] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 79.467530][ T5822] syz-executor168: attempt to access beyond end of device [ 79.467530][ T5822] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 79.481899][ T5822] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 79.504622][ T5822] syz-executor168: attempt to access beyond end of device [pid 5822] openat(AT_FDCWD, "blkio.bfq.time", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EIO (Input/output error) [pid 5822] exit_group(0) = ? [pid 5822] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5822, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 79.504622][ T5822] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 79.519226][ T5822] Buffer I/O error on dev loop0, logical block 3245768, async page read 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, 0x555593abd6f0 /* 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 [ 79.663364][ T5821] sysv_free_block: flc_count > flc_size [ 79.669363][ T5821] sysv_free_block: flc_count > flc_size [ 79.674996][ T5821] sysv_free_block: flc_count > flc_size [ 79.680796][ T5821] sysv_free_block: flc_count > flc_size [ 79.686571][ T5821] sysv_free_block: flc_count > flc_size [ 79.692225][ T5821] sysv_free_block: flc_count > flc_size [ 79.697898][ T5821] sysv_free_block: flc_count > flc_size [ 79.703806][ T5821] 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 [ 79.709727][ T5821] sysv_free_block: flc_count > flc_size [ 79.715335][ T5821] sysv_free_block: flc_count > flc_size [ 79.721968][ T5821] sysv_free_inode: inode 0,1,2 or nonexistent inode 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) 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, 0x555593ac5730 /* 2 entries */, 32768) = 48 getdents64(4, 0x555593ac5730 /* 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, 0x555593abd6f0 /* 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 5824 attached [pid 5824] set_robust_list(0x555593abc660, 24 [pid 5821] <... clone resumed>, child_tidptr=0x555593abc650) = 5824 [pid 5824] <... set_robust_list resumed>) = 0 [pid 5824] chdir("./1") = 0 [pid 5824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5824] setpgid(0, 0) = 0 [pid 5824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5824] write(3, "1000", 4) = 4 [pid 5824] close(3) = 0 [pid 5824] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5824] write(1, "executing program\n", 18executing program ) = 18 [pid 5824] memfd_create("syzkaller", 0) = 3 [pid 5824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6e92200000 [pid 5824] 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 5824] munmap(0x7f6e92200000, 138412032) = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5824] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5824] close(3) = 0 [pid 5824] close(4) = 0 [pid 5824] 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 [pid 5824] 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 5824] 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 5824] 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 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 79.963560][ T5824] loop0: detected capacity change from 0 to 128 [ 79.988734][ T5824] VFS: Found a Xenix FS (block size = 1024) on device loop0 [ 80.011663][ T5824] syz-executor168: attempt to access beyond end of device [ 80.011663][ T5824] loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 [ 80.026030][ T5824] Buffer I/O error on dev loop0, logical block 3245768, async page read [ 80.034599][ T5824] ================================================================== [ 80.042689][ T5824] BUG: KASAN: use-after-free in sysv_new_inode+0xfc7/0x1160 [ 80.050022][ T5824] Read of size 2 at addr ffff8880728381ce by task syz-executor168/5824 [ 80.058265][ T5824] [ 80.060611][ T5824] CPU: 0 UID: 0 PID: 5824 Comm: syz-executor168 Not tainted 6.13.0-rc3-syzkaller-00289-g48f506ad0b68 #0 [ 80.071738][ T5824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 80.081838][ T5824] Call Trace: [ 80.085122][ T5824] [ 80.088062][ T5824] dump_stack_lvl+0x241/0x360 [ 80.092782][ T5824] ? __pfx_dump_stack_lvl+0x10/0x10 [ 80.098008][ T5824] ? __pfx__printk+0x10/0x10 [ 80.102642][ T5824] ? _printk+0xd5/0x120 [ 80.106808][ T5824] ? __virt_addr_valid+0x183/0x530 [ 80.111932][ T5824] ? __virt_addr_valid+0x183/0x530 [ 80.117068][ T5824] print_report+0x169/0x550 [ 80.121615][ T5824] ? __virt_addr_valid+0x183/0x530 [ 80.126763][ T5824] ? __virt_addr_valid+0x183/0x530 [ 80.131893][ T5824] ? __virt_addr_valid+0x45f/0x530 [ 80.137018][ T5824] ? __phys_addr+0xba/0x170 [ 80.141534][ T5824] ? sysv_new_inode+0xfc7/0x1160 [ 80.146480][ T5824] kasan_report+0x143/0x180 [ 80.151001][ T5824] ? sysv_new_inode+0xfc7/0x1160 [ 80.155968][ T5824] sysv_new_inode+0xfc7/0x1160 [ 80.160755][ T5824] ? __pfx_sysv_new_inode+0x10/0x10 [ 80.166070][ T5824] ? _raw_spin_unlock+0x28/0x50 [ 80.170956][ T5824] ? __d_add+0x500/0x800 [ 80.175217][ T5824] sysv_mknod+0x4e/0xe0 [ 80.179386][ T5824] ? __pfx_sysv_create+0x10/0x10 [ 80.184344][ T5824] path_openat+0x1c03/0x3590 [ 80.188987][ T5824] ? __pfx_path_openat+0x10/0x10 [ 80.193945][ T5824] do_filp_open+0x27f/0x4e0 [ 80.198460][ T5824] ? __pfx_do_filp_open+0x10/0x10 [ 80.203495][ T5824] ? do_raw_spin_lock+0x14f/0x370 [ 80.208547][ T5824] do_sys_openat2+0x13e/0x1d0 [ 80.213256][ T5824] ? __pfx_do_sys_openat2+0x10/0x10 [ 80.218462][ T5824] ? lockdep_hardirqs_on+0x99/0x150 [ 80.223702][ T5824] ? _raw_spin_unlock_irq+0x2e/0x50 [ 80.228913][ T5824] ? ptrace_notify+0x279/0x380 [ 80.233693][ T5824] __x64_sys_openat+0x247/0x2a0 [ 80.238555][ T5824] ? __pfx___x64_sys_openat+0x10/0x10 [ 80.243934][ T5824] ? do_syscall_64+0x100/0x230 [ 80.248715][ T5824] do_syscall_64+0xf3/0x230 [ 80.253264][ T5824] ? clear_bhb_loop+0x35/0x90 [ 80.257946][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.263862][ T5824] RIP: 0033:0x7f6e9a7c00e9 [ 80.268285][ T5824] 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 [ 80.288098][ T5824] RSP: 002b:00007fff3eea2748 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 80.296519][ T5824] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6e9a7c00e9 [ 80.304493][ T5824] RDX: 000000000000275a RSI: 00000000200000c0 RDI: 00000000ffffff9c [ 80.312465][ T5824] RBP: 00000000ffffffff R08: 0000000000009e87 R09: 0000000000000000 [ 80.320439][ T5824] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3eea2790 [ 80.328859][ T5824] R13: 00007fff3eea27d0 R14: 0000000000010000 R15: 0000000000000003 [ 80.336852][ T5824] [ 80.339884][ T5824] [ 80.342218][ T5824] The buggy address belongs to the physical page: [ 80.348666][ T5824] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x555c0abbc pfn:0x72838 [ 80.358156][ T5824] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 80.365268][ T5824] raw: 00fff00000000000 ffffea0001ca0e48 ffffea0001d5cb48 0000000000000000 [ 80.373875][ T5824] raw: 0000000555c0abbc 0000000000000000 00000000ffffffff 0000000000000000 [ 80.382545][ T5824] page dumped because: kasan: bad access detected [ 80.388968][ T5824] page_owner tracks the page as freed [ 80.394329][ T5824] page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 5815, tgid 5815 (sftp-server), ts 73422263585, free_ts 73512947408 [ 80.412935][ T5824] post_alloc_hook+0x1f3/0x230 [ 80.417729][ T5824] get_page_from_freelist+0x3651/0x37a0 [ 80.423319][ T5824] __alloc_pages_noprof+0x292/0x710 [ 80.428530][ T5824] alloc_pages_mpol_noprof+0x3e8/0x680 [ 80.434019][ T5824] vma_alloc_folio_noprof+0x12e/0x230 [ 80.439417][ T5824] folio_prealloc+0x2e/0x170 [ 80.444011][ T5824] handle_pte_fault+0x2c98/0x5ed0 [ 80.449044][ T5824] handle_mm_fault+0x1053/0x1ad0 [ 80.454000][ T5824] exc_page_fault+0x459/0x8b0 [ 80.458701][ T5824] asm_exc_page_fault+0x26/0x30 [ 80.463595][ T5824] page last free pid 5815 tgid 5815 stack trace: [ 80.469928][ T5824] free_unref_folios+0xe23/0x1890 [ 80.474962][ T5824] folios_put_refs+0x76c/0x860 [ 80.479742][ T5824] free_pages_and_swap_cache+0x2ea/0x690 [ 80.485394][ T5824] tlb_flush_mmu+0x3a3/0x680 [ 80.489999][ T5824] tlb_finish_mmu+0xd4/0x200 [ 80.494609][ T5824] exit_mmap+0x496/0xc20 [ 80.498881][ T5824] __mmput+0x115/0x3b0 [ 80.503047][ T5824] exit_mm+0x220/0x310 [ 80.507117][ T5824] do_exit+0x9ad/0x28e0 [ 80.511276][ T5824] do_group_exit+0x207/0x2c0 [ 80.515875][ T5824] __x64_sys_exit_group+0x3f/0x40 [ 80.520905][ T5824] x64_sys_call+0x26a8/0x26b0 [ 80.525608][ T5824] do_syscall_64+0xf3/0x230 [ 80.530117][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.536025][ T5824] [ 80.538346][ T5824] Memory state around the buggy address: [ 80.543974][ T5824] ffff888072838080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.552054][ T5824] ffff888072838100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.560115][ T5824] >ffff888072838180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.568177][ T5824] ^ [ 80.574586][ T5824] ffff888072838200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.582650][ T5824] ffff888072838280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.590719][ T5824] ================================================================== [ 80.599598][ T5824] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 80.606829][ T5824] CPU: 0 UID: 0 PID: 5824 Comm: syz-executor168 Not tainted 6.13.0-rc3-syzkaller-00289-g48f506ad0b68 #0 [ 80.618040][ T5824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 80.628992][ T5824] Call Trace: [ 80.632325][ T5824] [ 80.635281][ T5824] dump_stack_lvl+0x241/0x360 [ 80.640011][ T5824] ? __pfx_dump_stack_lvl+0x10/0x10 [ 80.645230][ T5824] ? __pfx__printk+0x10/0x10 [ 80.649853][ T5824] ? preempt_schedule+0xe1/0xf0 [ 80.654742][ T5824] ? vscnprintf+0x5d/0x90 [ 80.659111][ T5824] panic+0x349/0x880 [ 80.663058][ T5824] ? check_panic_on_warn+0x21/0xb0 [ 80.668201][ T5824] ? __pfx_panic+0x10/0x10 [ 80.672649][ T5824] ? _raw_spin_unlock_irqrestore+0x130/0x140 [ 80.678650][ T5824] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 80.685015][ T5824] ? print_report+0x502/0x550 [ 80.689739][ T5824] check_panic_on_warn+0x86/0xb0 [ 80.694713][ T5824] ? sysv_new_inode+0xfc7/0x1160 [ 80.699674][ T5824] end_report+0x77/0x160 [ 80.703937][ T5824] kasan_report+0x154/0x180 [ 80.708465][ T5824] ? sysv_new_inode+0xfc7/0x1160 [ 80.713443][ T5824] sysv_new_inode+0xfc7/0x1160 [ 80.718227][ T5824] ? __pfx_sysv_new_inode+0x10/0x10 [ 80.723456][ T5824] ? _raw_spin_unlock+0x28/0x50 [ 80.728344][ T5824] ? __d_add+0x500/0x800 [ 80.732603][ T5824] sysv_mknod+0x4e/0xe0 [ 80.736783][ T5824] ? __pfx_sysv_create+0x10/0x10 [ 80.741754][ T5824] path_openat+0x1c03/0x3590 [ 80.746374][ T5824] ? __pfx_path_openat+0x10/0x10 [ 80.751374][ T5824] do_filp_open+0x27f/0x4e0 [ 80.755980][ T5824] ? __pfx_do_filp_open+0x10/0x10 [ 80.761029][ T5824] ? do_raw_spin_lock+0x14f/0x370 [ 80.766090][ T5824] do_sys_openat2+0x13e/0x1d0 [ 80.770774][ T5824] ? __pfx_do_sys_openat2+0x10/0x10 [ 80.776002][ T5824] ? lockdep_hardirqs_on+0x99/0x150 [ 80.781239][ T5824] ? _raw_spin_unlock_irq+0x2e/0x50 [ 80.786579][ T5824] ? ptrace_notify+0x279/0x380 [ 80.791379][ T5824] __x64_sys_openat+0x247/0x2a0 [ 80.796269][ T5824] ? __pfx___x64_sys_openat+0x10/0x10 [ 80.801691][ T5824] ? do_syscall_64+0x100/0x230 [ 80.806483][ T5824] do_syscall_64+0xf3/0x230 [ 80.811140][ T5824] ? clear_bhb_loop+0x35/0x90 [ 80.816179][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.822097][ T5824] RIP: 0033:0x7f6e9a7c00e9 [ 80.826620][ T5824] 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 [ 80.846356][ T5824] RSP: 002b:00007fff3eea2748 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 80.854875][ T5824] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6e9a7c00e9 [ 80.863030][ T5824] RDX: 000000000000275a RSI: 00000000200000c0 RDI: 00000000ffffff9c [ 80.871011][ T5824] RBP: 00000000ffffffff R08: 0000000000009e87 R09: 0000000000000000 [ 80.879887][ T5824] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3eea2790 [ 80.888186][ T5824] R13: 00007fff3eea27d0 R14: 0000000000010000 R15: 0000000000000003 [ 80.896273][ T5824] [ 80.899443][ T5824] Kernel Offset: disabled [ 80.903794][ T5824] Rebooting in 86400 seconds..