From 2bc6b218717b9d08f466f88209251d54bc09b207 Mon Sep 17 00:00:00 2001 From: Fuad Tabba Date: Tue, 22 Sep 2026 19:14:30 +0100 Subject: arm64/boot: Disable trapping of PMZR_EL0 writes to EL2 __init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2. PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a write from EL0 reaches the trap and takes the host down without a panic message. Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9 bits. Fixes: 858c7bfcb35e1 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9") Cc: stable@vger.kernel.org Signed-off-by: Fuad Tabba Reviewed-by: Anshuman Khandual Reviewed-by: Oliver Upton Signed-off-by: Will Deacon --- include/net/sctp/ulpqueue.h | 68 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 include/net/sctp/ulpqueue.h (limited to 'include/net/sctp/ulpqueue.h') diff --git a/include/net/sctp/ulpqueue.h b/include/net/sctp/ulpqueue.h new file mode 100644 index 000000000..60f664129 --- /dev/null +++ b/include/net/sctp/ulpqueue.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* SCTP kernel implementation + * (C) Copyright IBM Corp. 2001, 2004 + * Copyright (c) 1999-2000 Cisco, Inc. + * Copyright (c) 1999-2001 Motorola, Inc. + * Copyright (c) 2001 Intel Corp. + * Copyright (c) 2001 Nokia, Inc. + * Copyright (c) 2001 La Monte H.P. Yarroll + * + * These are the definitions needed for the sctp_ulpq type. The + * sctp_ulpq is the interface between the Upper Layer Protocol, or ULP, + * and the core SCTP state machine. This is the component which handles + * reassembly and ordering. + * + * Please send any bug reports or fixes you make to the + * email addresses: + * lksctp developers + * + * Written or modified by: + * Jon Grimm + * La Monte H.P. Yarroll + * Sridhar Samudrala + */ + +#ifndef __sctp_ulpqueue_h__ +#define __sctp_ulpqueue_h__ + +/* A structure to carry information to the ULP (e.g. Sockets API) */ +struct sctp_ulpq { + char pd_mode; + struct sctp_association *asoc; + struct sk_buff_head reasm; + struct sk_buff_head reasm_uo; + struct sk_buff_head lobby; +}; + +/* Prototypes. */ +void sctp_ulpq_init(struct sctp_ulpq *ulpq, struct sctp_association *asoc); +void sctp_ulpq_flush(struct sctp_ulpq *ulpq); +void sctp_ulpq_free(struct sctp_ulpq *); + +/* Add a new DATA chunk for processing. */ +int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t); + +/* Add a new event for propagation to the ULP. */ +int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sk_buff_head *skb_list); + +/* Renege previously received chunks. */ +void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t); + +/* Perform partial delivery. */ +void sctp_ulpq_partial_delivery(struct sctp_ulpq *, gfp_t); + +/* Abort the partial delivery. */ +void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t); + +/* Clear the partial data delivery condition on this socket. */ +int sctp_clear_pd(struct sock *sk, struct sctp_association *asoc); + +/* Skip over an SSN. */ +void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn); + +void sctp_ulpq_reasm_flushtsn(struct sctp_ulpq *, __u32); + +__u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq, + struct sk_buff_head *list, __u16 needed); + +#endif /* __sctp_ulpqueue_h__ */ -- cgit v1.3.1