[PATCH RFC POC 00/50] file: handle files on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
[PATCH RFC POC 01/50] file: install files on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 01/50] file: install files on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 02/50] entry: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 02/50] entry: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 03/50] alpha: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 03/50] alpha: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 04/50] ARC: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 04/50] ARC: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 05/50] ARM: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 05/50] ARM: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 06/50] arm64: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 06/50] arm64: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 07/50] csky: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 07/50] csky: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 08/50] hexagon: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 08/50] hexagon: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 09/50] m68k: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 09/50] m68k: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 11/50] MIPS: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 11/50] MIPS: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 10/50] microblaze: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 10/50] microblaze: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 12/50] nios2: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 12/50] nios2: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 13/50] openrisc: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 13/50] openrisc: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 14/50] parisc: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 14/50] parisc: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 15/50] sh: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 15/50] sh: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 16/50] sparc: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 16/50] sparc: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 17/50] um: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 17/50] um: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 18/50] xtensa: commit fds on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 18/50] xtensa: commit fds on syscall exit · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 19/50] file: require the syscall exit hook from every architecture · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 19/50] file: require the syscall exit hook from every architecture · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 21/50] io_uring: commit fds per request · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 21/50] io_uring: commit fds per request · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 20/50] file: warn when the descriptor table is unshared with slots · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 20/50] file: warn when the descriptor table is unshared with slots · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 22/50] net: install SCM_RIGHTS descriptors when recvmsg() returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 22/50] net: install SCM_RIGHTS descriptors when recvmsg() returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 23/50] file: open-code receive_fd()'s immediate install · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 23/50] file: open-code receive_fd()'s immediate install · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 24/50] file: make FD_ADD() a standalone immediate install · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 24/50] file: make FD_ADD() a standalone immediate install · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 25/50] file: reimplement FD_PREPARE() on the deferred fd_prepare() path · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 25/50] file: reimplement FD_PREPARE() on the deferred fd_prepare() path · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 26/50] dma-buf: stop unwinding sync file descriptors by hand · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 26/50] dma-buf: stop unwinding sync file descriptors by hand · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 27/50] drm/amdkfd: stop collecting CRIU dma-buf descriptors for a final install · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 27/50] drm/amdkfd: stop collecting CRIU dma-buf descriptors for a final install · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 28/50] drm/msm: install the out-fence descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 28/50] drm/msm: install the out-fence descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 29/50] drm/virtio: install the out-fence descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 29/50] drm/virtio: install the out-fence descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 30/50] drm/vmwgfx: install the out-fence descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 30/50] drm/vmwgfx: install the out-fence descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 31/50] vfio: install the migration data descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 31/50] vfio: install the migration data descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 32/50] liveupdate: install the session descriptors when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 32/50] liveupdate: install the session descriptors when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 33/50] io_uring/zcrx: install the exported descriptor when the request returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 33/50] io_uring/zcrx: install the exported descriptor when the request returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 34/50] sctp: install the peeloff descriptor when the syscall returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 34/50] sctp: install the peeloff descriptor when the syscall returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 35/50] ALSA: compress: install the task descriptors when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 35/50] ALSA: compress: install the task descriptors when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 36/50] nitro_enclaves: install the enclave descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 36/50] nitro_enclaves: install the enclave descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 37/50] tpm: vtpm_proxy: install the server descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 37/50] tpm: vtpm_proxy: install the server descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 38/50] perf: stop putting the event descriptor back on failure · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 38/50] perf: stop putting the event descriptor back on failure · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 39/50] seccomp: stop putting the listener descriptor back on failure · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 39/50] seccomp: stop putting the listener descriptor back on failure · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 40/50] KVM: stop putting descriptors back on failure · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 40/50] KVM: stop putting descriptors back on failure · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 41/50] KVM: guest_memfd: stop putting the descriptor back on failure · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 41/50] KVM: guest_memfd: stop putting the descriptor back on failure · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 42/50] drm: stop unwinding descriptors by hand · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 42/50] drm: stop unwinding descriptors by hand · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 43/50] drm/amdgpu: stop unwinding the fence descriptor by hand · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 43/50] drm/amdgpu: stop unwinding the fence descriptor by hand · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 44/50] drm/etnaviv: install the out-fence descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 44/50] drm/etnaviv: install the out-fence descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 45/50] accel/habanalabs: stop putting the dma-buf descriptor back on failure · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 45/50] accel/habanalabs: stop putting the dma-buf descriptor back on failure · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 46/50] xen/gntdev-dmabuf: stop putting the descriptor back on failure · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 46/50] xen/gntdev-dmabuf: stop putting the descriptor back on failure · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 47/50] iio: buffer: install the buffer descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 47/50] iio: buffer: install the buffer descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 48/50] misc: fastrpc: install the dma-buf descriptor when the ioctl returns · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 48/50] misc: fastrpc: install the dma-buf descriptor when the ioctl returns · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 49/50] iommufd: stop putting descriptors back on failure · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 49/50] iommufd: stop putting descriptors back on failure · sashiko-bot@kernel.org · 2026-09-15
[PATCH RFC POC 50/50] Drivers: hv: mshv: stop putting descriptors back on failure · Christian Brauner <brauner@kernel.org> · 2026-09-15
Re: [PATCH RFC POC 50/50] Drivers: hv: mshv: stop putting descriptors back on failure · sashiko-bot@kernel.org · 2026-09-15
Re: [PATCH RFC POC 00/50] file: handle files on syscall exit · Linus Torvalds <torvalds@linux-foundation.org> · 2026-09-15
Re: [PATCH RFC POC 00/50] file: handle files on syscall exit · Rob Clark <hidden> · 2026-09-15
Re: [PATCH RFC POC 00/50] file: handle files on syscall exit · Linus Torvalds <torvalds@linux-foundation.org> · 2026-09-15
Re: [PATCH RFC POC 00/50] file: handle files on syscall exit · Christian Brauner <brauner@kernel.org> · 2026-09-16
Re: [PATCH RFC POC 00/50] file: handle files on syscall exit · Jann Horn <jannh@google.com> · 2026-09-15
Re: [PATCH RFC POC 00/50] file: handle files on syscall exit · Linus Torvalds <torvalds@linux-foundation.org> · 2026-09-15
Re: [PATCH RFC POC 00/50] file: handle files on syscall exit · David Laight <hidden> · 2026-09-16

Re: [PATCH RFC POC 23/50] file: open-code receive_fd()'s immediate install

From: sashiko-bot@kernel.org
Date: 2026-09-15 12:00:56
Also in: bpf, dri-devel, io-uring, kexec, kvm, linux-alpha, linux-arm-kernel, linux-arm-msm, linux-fsdevel, linux-gpio, linux-hyperv, linux-m68k, linux-mips, linux-mm, linux-sh, linux-um, lkml, sparclinux, virtualization

receive_fd() cannot defer to syscall exit as SECCOMP_IOCTL_NOTIF_ADDFD
installs into the target task and hands the number to the supervisor
and IORING_OP_FIXED_FD_INSTALL runs from an io_uring op. Open-code the
get_unused_fd_flags() + fd_install() it did through FD_PREPARE().

Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260915-work-fd-reserve-unify-folded-v1-0-4d5217d6b246@kernel.org?part=23

`h`	back out one level
`j`	next message in thread
`k`	previous message in thread
`l`	drill in
`Esc`	close help / fold thread tree
`?`	toggle this help