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| author | Dmitry Vyukov <dvyukov@google.com> | 2019-02-07 18:40:59 +0100 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2019-02-08 09:29:15 +0100 |
| commit | 8c1621bedea53aa77ac39bbda26e86592d6dde5b (patch) | |
| tree | 53167c3ddd2c7ae3fcabb75dcc6316c236ec9718 /executor/syscalls.h | |
| parent | aa4feb03290ee285b276e5a9c9abddd5296e79e0 (diff) | |
sys/linux: prohibit EXT4_IOC_RESIZE_FS
When we run with sandbox=none, test program can do EXT4_IOC_RESIZE_FS which
shrinks rootfs basically to 0. This breaks the machine as all tests then fail with:
failed to create temp dir: mkdir syzkaller-testdir077269498: no space left on device
This is the most common source of "lost connection" crashes overall and
they are not actually kernel bugs.
Prohibit EXT4_IOC_RESIZE_FS for now.
Alternatively we can mount tmpfs with sandbox=none.
Update #971
Diffstat (limited to 'executor/syscalls.h')
| -rw-r--r-- | executor/syscalls.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/executor/syscalls.h b/executor/syscalls.h index a270584e0..4164be810 100644 --- a/executor/syscalls.h +++ b/executor/syscalls.h @@ -2138,7 +2138,6 @@ const call_t syscalls[] = { {"ioctl$EXT4_IOC_MIGRATE", 54}, {"ioctl$EXT4_IOC_MOVE_EXT", 54}, {"ioctl$EXT4_IOC_PRECACHE_EXTENTS", 54}, - {"ioctl$EXT4_IOC_RESIZE_FS", 54}, {"ioctl$EXT4_IOC_SETFLAGS", 54}, {"ioctl$EXT4_IOC_SWAP_BOOT", 54}, {"ioctl$FIBMAP", 54}, @@ -4713,7 +4712,6 @@ const call_t syscalls[] = { {"ioctl$EXT4_IOC_MIGRATE", 16}, {"ioctl$EXT4_IOC_MOVE_EXT", 16}, {"ioctl$EXT4_IOC_PRECACHE_EXTENTS", 16}, - {"ioctl$EXT4_IOC_RESIZE_FS", 16}, {"ioctl$EXT4_IOC_SETFLAGS", 16}, {"ioctl$EXT4_IOC_SWAP_BOOT", 16}, {"ioctl$FIBMAP", 16}, @@ -7281,7 +7279,6 @@ const call_t syscalls[] = { {"ioctl$EXT4_IOC_MIGRATE", 54}, {"ioctl$EXT4_IOC_MOVE_EXT", 54}, {"ioctl$EXT4_IOC_PRECACHE_EXTENTS", 54}, - {"ioctl$EXT4_IOC_RESIZE_FS", 54}, {"ioctl$EXT4_IOC_SETFLAGS", 54}, {"ioctl$EXT4_IOC_SWAP_BOOT", 54}, {"ioctl$FIBMAP", 54}, @@ -9802,7 +9799,6 @@ const call_t syscalls[] = { {"ioctl$EXT4_IOC_MIGRATE", 29}, {"ioctl$EXT4_IOC_MOVE_EXT", 29}, {"ioctl$EXT4_IOC_PRECACHE_EXTENTS", 29}, - {"ioctl$EXT4_IOC_RESIZE_FS", 29}, {"ioctl$EXT4_IOC_SETFLAGS", 29}, {"ioctl$EXT4_IOC_SWAP_BOOT", 29}, {"ioctl$FIBMAP", 29}, @@ -12316,7 +12312,6 @@ const call_t syscalls[] = { {"ioctl$EXT4_IOC_MIGRATE", 54}, {"ioctl$EXT4_IOC_MOVE_EXT", 54}, {"ioctl$EXT4_IOC_PRECACHE_EXTENTS", 54}, - {"ioctl$EXT4_IOC_RESIZE_FS", 54}, {"ioctl$EXT4_IOC_SETFLAGS", 54}, {"ioctl$EXT4_IOC_SWAP_BOOT", 54}, {"ioctl$FIBMAP", 54}, |