#include #include #include #include #include #include "util/util.h" #include "util/debug.h" #define CHUNK_SIZE 16384 int gzip_decompress_to_file(const char *input, int output_fd) { int ret = Z_STREAM_ERROR; int input_fd; void *ptr; int len; struct stat stbuf; unsigned char buf[CHUNK_SIZE]; z_stream zs = { .zalloc = Z_NULL, .zfree = Z_NULL, .opaque = Z_NULL, .avail_in = 0, .next_in = Z_NULL, }; input_fd = open(input, O_RDONLY); if (input_fd < 0) return -1; if (fstat(input_fd, &stbuf) < 0) goto out_close; ptr = mmap(NULL, stbuf.st_size, PROT_READ, MAP_PRIVATE, input_fd, 0); if (ptr == MAP_FAILED) goto out_close; if (inflateInit2(&zs, 16 + MAX_WBITS) != Z_OK) goto out_unmap; zs.next_in = ptr; zs.avail_in = stbuf.st_size; do { zs.next_out = buf; zs.avail_out = CHUNK_SIZE; ret = inflate(&zs, Z_NO_FLUSH); switch (ret) { case Z_NEED_DICT: ret = Z_DATA_ERROR; /* fall through */ case Z_DATA_ERROR: case Z_MEM_ERROR: goto out; default: break; } len = CHUNK_SIZE - zs.avail_out; if (writen(output_fd, buf, len) != len) { ret = Z_DATA_ERROR; goto out; } } while (ret != Z_STREAM_END); out: inflateEnd(&zs); out_unmap: munmap(ptr, stbuf.st_size); out_close: close(input_fd); return ret == Z_STREAM_END ? 0 : -1; } /select> net-next plumbingsTobias Klauser
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authorAndrei Vagin <avagin@openvz.org>2017-01-04 19:28:14 -0800
committerEric W. Biederman <ebiederm@xmission.com>2017-01-10 13:34:56 +1300
commitadd7c65ca426b7a37184dd3d2172394e23d585d6 (patch)
tree28b08b519540041b06ed0ab0b1c005076b932e8e /include/dt-bindings/clock/exynos5433.h
parent75422726b0f717d67db3283c2eb5bc14fa2619c5 (diff)
pid: fix lockdep deadlock warning due to ucount_lock
========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.10.0-rc2-00024-g4aecec9-dirty #118 Tainted: G W --------------------------------------------------------- swapper/1/0 just changed the state of lock: (&(&sighand->siglock)->rlock){-.....}, at: [<ffffffffbd0a1bc6>] __lock_task_sighand+0xb6/0x2c0 but this lock took another, HARDIRQ-unsafe lock in the past: (ucounts_lock){+.+...} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &(&sighand->siglock)->rlock --> &(&tty->ctrl_lock)->rlock --> ucounts_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(ucounts_lock); local_irq_disable(); lock(&(&sighand->siglock)->rlock); lock(&(&tty->ctrl_lock)->rlock); <Interrupt> lock(&(&sighand->siglock)->rlock); *** DEADLOCK *** This patch removes a dependency between rlock and ucount_lock. Fixes: f333c700c610 ("pidns: Add a limit on the number of pid namespaces") Cc: stable@vger.kernel.org Signed-off-by: Andrei Vagin <avagin@openvz.org> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'include/dt-bindings/clock/exynos5433.h')