[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 03/50] alpha: commit fds on syscall exit

From: sashiko-bot@kernel.org
Date: 2026-09-15 11:50:27
Also in: bpf, dri-devel, io-uring, kexec, kvm, linux-alpha, linux-arm-kernel, linux-arm-msm, linux-fsdevel, linux-gpio, linux-m68k, linux-mips, linux-mm, linux-sh, linux-um, linuxppc-dev, lkml, sparclinux, virtualization

Add TIF_FD_SLOTS and test it once the untraced system call has stored
its result. A task that reserved descriptors calls syscall_trace_leave()
and joins ret_from_sys_call with the flag gone.

We mirror the traced error path where the switch stack is set up and the
return address and the syscall restart state are placed in callee-saved
registers.

Btw, let's remove alpha... It's a pain.

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=3

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