Merge branch 'fixes-for-tailcall-with-subprog-and-callback'

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Pu Lehui says:

====================
Fixes for tailcall with subprog and callback

From: Pu Lehui <pulehui@huawei.com>

This series fix two issues related to tailcall:

patch 1: Fix tail_call_reachable state leak across call branches.
patch 2: Reject callback subprogs invoke tailcall.
patch 3: testcases for patch 1 and 2.

v3:
- Fix tail_call_reachable state leak across call branches. (Sashiko)
- Add testcase for the above issue.

v2:
https://lore.kernel.org/bpf/20260714024459.420075-1-pulehui@huaweicloud.com
- Remove redantant testcase.
- Add ACK tag by Eduard.

v1:
https://lore.kernel.org/bpf/20260711104727.4023420-1-pulehui@huaweicloud.com
====================

Link: https://patch.msgid.link/20260716120157.835937-1-pulehui@huaweicloud.com
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>

...

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Eduard Zingerman 2026-07-16 17:46:26 -07:00

parent d1f4b56417 42bfd21a8b

commit ba6cb45969

3 changed files with 92 additions and 8 deletions

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12

kernel/bpf/verifier.c

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7

tools/testing/selftests/bpf/prog_tests/tailcalls.c

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81

tools/testing/selftests/bpf/progs/tailcall_callback.c

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