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2024-02-12drm/nouveau: omit to create schedulers using the legacy uAPIDanilo Krummrich1-4/+10
Omit to create scheduler instances when using the legacy uAPI. When using the legacy NOUVEAU_GEM_PUSHBUF ioctl no scheduler instance is required, hence omit creating scheduler instances in nouveau_abi16_ioctl_channel_alloc(). Tested-by: Timur Tabi <[email protected]> Reviewed-by: Dave Airlie <[email protected]> Signed-off-by: Danilo Krummrich <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2024-02-12drm/nouveau: don't fini scheduler if not initializedDanilo Krummrich8-16/+53
nouveau_abi16_ioctl_channel_alloc() and nouveau_cli_init() simply call their corresponding *_fini() counterpart. This can lead to nouveau_sched_fini() being called without struct nouveau_sched ever being initialized in the first place. Instead of embedding struct nouveau_sched into struct nouveau_cli and struct nouveau_chan_abi16, allocate struct nouveau_sched separately, such that we can check for the corresponding pointer to be NULL in the particular *_fini() functions. It makes sense to allocate struct nouveau_sched separately anyway, since in a subsequent commit we can also avoid to allocate a struct nouveau_sched in nouveau_abi16_ioctl_channel_alloc() at all, if the VM_BIND uAPI has been disabled due to the legacy uAPI being used. Fixes: 5f03a507b29e ("drm/nouveau: implement 1:1 scheduler - entity relationship") Reported-by: Timur Tabi <[email protected]> Tested-by: Timur Tabi <[email protected]> Closes: https://lore.kernel.org/nouveau/[email protected]/ Reviewed-by: Dave Airlie <[email protected]> Signed-off-by: Danilo Krummrich <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2024-02-12Merge branch 'mptcp-misc-fixes'David S. Miller8-62/+95
Matthieu Baerts says: ==================== mptcp: locking cleanup & misc. fixes Patches 1-4 are fixes for issues found by Paolo while working on adding TCP_NOTSENT_LOWAT support. The latter will need to track more states under the msk data lock. Since the locking msk locking schema is already quite complex, do a long awaited clean-up step by moving several confusing lockless initialization under the relevant locks. Note that it is unlikely a real race could happen even prior to such patches as the MPTCP-level state machine implicitly ensures proper serialization of the write accesses, even lacking explicit lock. But still, simplification is welcome and this will help for the maintenance. This can be backported up to v5.6. Patch 5 is a fix for the userspace PM, not to add new local address entries if the address is already in the list. This behaviour can be seen since v5.19. Patch 6 fixes an issue when Fastopen is used. The issue can happen since v6.2. A previous fix has already been applied, but not taking care of all cases according to syzbot. Patch 7 updates Geliang's email address in the MAINTAINERS file. ==================== Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12MAINTAINERS: update Geliang's email addressGeliang Tang2-5/+6
Update my email-address in MAINTAINERS and .mailmap entries to my kernel.org account. Suggested-by: Mat Martineau <[email protected]> Signed-off-by: Geliang Tang <[email protected]> Reviewed-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12mptcp: really cope with fastopen racePaolo Abeni1-1/+2
Fastopen and PM-trigger subflow shutdown can race, as reported by syzkaller. In my first attempt to close such race, I missed the fact that the subflow status can change again before the subflow_state_change callback is invoked. Address the issue additionally copying with all the states directly reachable from TCP_FIN_WAIT1. Fixes: 1e777f39b4d7 ("mptcp: add MSG_FASTOPEN sendmsg flag support") Fixes: 4fd19a307016 ("mptcp: fix inconsistent state on fastopen race") Cc: [email protected] Reported-by: [email protected] Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/458 Signed-off-by: Paolo Abeni <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12mptcp: check addrs list in userspace_pm_get_local_idGeliang Tang1-1/+12
Before adding a new entry in mptcp_userspace_pm_get_local_id(), it's better to check whether this address is already in userspace pm local address list. If it's in the list, no need to add a new entry, just return it's address ID and use this address. Fixes: 8b20137012d9 ("mptcp: read attributes of addr entries managed by userspace PMs") Cc: [email protected] Signed-off-by: Geliang Tang <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12mptcp: corner case locking for rx path fields initializationPaolo Abeni5-39/+50
Most MPTCP-level related fields are under the mptcp data lock protection, but are written one-off without such lock at MPC complete time, both for the client and the server Leverage the mptcp_propagate_state() infrastructure to move such initialization under the proper lock client-wise. The server side critical init steps are done by mptcp_subflow_fully_established(): ensure the caller properly held the relevant lock, and avoid acquiring the same lock in the nested scopes. There are no real potential races, as write access to such fields is implicitly serialized by the MPTCP state machine; the primary goal is consistency. Fixes: d22f4988ffec ("mptcp: process MP_CAPABLE data option") Cc: [email protected] Signed-off-by: Paolo Abeni <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12mptcp: fix more tx path fields initializationPaolo Abeni2-6/+13
The 'msk->write_seq' and 'msk->snd_nxt' are always updated under the msk socket lock, except at MPC handshake completiont time. Builds-up on the previous commit to move such init under the relevant lock. There are no known problems caused by the potential race, the primary goal is consistency. Fixes: 6d0060f600ad ("mptcp: Write MPTCP DSS headers to outgoing data packets") Cc: [email protected] Signed-off-by: Paolo Abeni <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12mptcp: fix rcv space initializationPaolo Abeni3-7/+10
mptcp_rcv_space_init() is supposed to happen under the msk socket lock, but active msk socket does that without such protection. Leverage the existing mptcp_propagate_state() helper to that extent. We need to ensure mptcp_rcv_space_init will happen before mptcp_rcv_space_adjust(), and the release_cb does not assure that: explicitly check for such condition. While at it, move the wnd_end initialization out of mptcp_rcv_space_init(), it never belonged there. Note that the race does not produce ill effect in practice, but change allows cleaning-up and defying better the locking model. Fixes: a6b118febbab ("mptcp: add receive buffer auto-tuning") Cc: [email protected] Signed-off-by: Paolo Abeni <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12mptcp: drop the push_pending fieldPaolo Abeni2-7/+6
Such field is there to avoid acquiring the data lock in a few spots, but it adds complexity to the already non trivial locking schema. All the relevant call sites (mptcp-level re-injection, set socket options), are slow-path, drop such field in favor of 'cb_flags', adding the relevant locking. This patch could be seen as an improvement, instead of a fix. But it simplifies the next patch. The 'Fixes' tag has been added to help having this series backported to stable. Fixes: e9d09baca676 ("mptcp: avoid atomic bit manipulation when possible") Cc: [email protected] Signed-off-by: Paolo Abeni <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Matthieu Baerts (NGI0) <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12tools/rtla: Exit with EXIT_SUCCESS when help is invokedJohn Kacur4-4/+20
Fix rtla so that the following commands exit with 0 when help is invoked rtla osnoise top -h rtla osnoise hist -h rtla timerlat top -h rtla timerlat hist -h Link: https://lore.kernel.org/linux-trace-devel/[email protected] Cc: [email protected] Fixes: 1eeb6328e8b3 ("rtla/timerlat: Add timerlat hist mode") Signed-off-by: John Kacur <[email protected]> Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
2024-02-12tools/rtla: Replace setting prio with nice for SCHED_OTHERlimingming32-3/+5
Since the sched_priority for SCHED_OTHER is always 0, it makes no sence to set it. Setting nice for SCHED_OTHER seems more meaningful. Link: https://lkml.kernel.org/r/[email protected] Cc: [email protected] Fixes: b1696371d865 ("rtla: Helper functions for rtla") Signed-off-by: limingming3 <[email protected]> Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
2024-02-12Merge branch 'net-misplaced-fields'David S. Miller6-14/+16
Eric Dumazet says: ==================== net: more three misplaced fields We recently reorganized some structures for better data locality in networking fast paths. This series moves three fields that were not correctly classified. There probably more to come. Reference : https://lwn.net/Articles/951321/ ==================== Signed-off-by: David S. Miller <[email protected]>
2024-02-12net-device: move lstats in net_device_read_txrxEric Dumazet3-8/+9
dev->lstats is notably used from loopback ndo_start_xmit() and other virtual drivers. Per cpu stats updates are dirtying per-cpu data, but the pointer itself is read-only. Fixes: 43a71cd66b9c ("net-device: reorganize net_device fast path variables") Signed-off-by: Eric Dumazet <[email protected]> Cc: Coco Li <[email protected]> Cc: Simon Horman <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12tcp: move tp->tcp_usec_ts to tcp_sock_read_txrx groupEric Dumazet2-3/+3
tp->tcp_usec_ts is a read mostly field, used in rx and tx fast paths. Fixes: d5fed5addb2b ("tcp: reorganize tcp_sock fast path variables") Signed-off-by: Eric Dumazet <[email protected]> Cc: Coco Li <[email protected]> Cc: Wei Wang <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12tcp: move tp->scaling_ratio to tcp_sock_read_txrx groupEric Dumazet3-3/+4
tp->scaling_ratio is a read mostly field, used in rx and tx fast paths. Fixes: d5fed5addb2b ("tcp: reorganize tcp_sock fast path variables") Signed-off-by: Eric Dumazet <[email protected]> Cc: Coco Li <[email protected]> Cc: Wei Wang <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-12drm/i915/dp: Limit SST link rate to <=8.1GbpsVille Syrjälä1-0/+3
Limit the link rate to HBR3 or below (<=8.1Gbps) in SST mode. UHBR (10Gbps+) link rates require 128b/132b channel encoding which we have not yet hooked up into the SST/no-sideband codepaths. Cc: [email protected] Signed-off-by: Ville Syrjälä <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] Reviewed-by: Jani Nikula <[email protected]> (cherry picked from commit 6061811d72e14f41f71b6a025510920b187bfcca) Signed-off-by: Joonas Lahtinen <[email protected]>
2024-02-12drm/i915/dsc: Fix the macro that calculates DSCC_/DSCA_ PPS reg addressManasi Navare1-2/+2
Commit bd077259d0a9 ("drm/i915/vdsc: Add function to read any PPS register") defines a new macro to calculate the DSC PPS register addresses with PPS number as an input. This macro correctly calculates the addresses till PPS 11 since the addresses increment by 4. So in that case the following macro works correctly to give correct register address: _MMIO(_DSCA_PPS_0 + (pps) * 4) However after PPS 11, the register address for PPS 12 increments by 12 because of RC Buffer memory allocation in between. Because of this discontinuity in the address space, the macro calculates wrong addresses for PPS 12 - 16 resulting into incorrect DSC PPS parameter value read/writes causing DSC corruption. This fixes it by correcting this macro to add the offset of 12 for PPS >=12. v3: Add correct paranthesis for pps argument (Jani Nikula) Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10172 Fixes: bd077259d0a9 ("drm/i915/vdsc: Add function to read any PPS register") Cc: Suraj Kandpal <[email protected]> Cc: Ankit Nautiyal <[email protected]> Cc: Animesh Manna <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Sean Paul <[email protected]> Cc: Drew Davenport <[email protected]> Signed-off-by: Manasi Navare <[email protected]> Reviewed-by: Jani Nikula <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] (cherry picked from commit 6074be620c31dc2ae11af96a1a5ea95580976fb5) Signed-off-by: Joonas Lahtinen <[email protected]>
2024-02-12tools/rv: Fix curr_reactor uninitialized variableDaniel Bristot de Oliveira1-1/+1
clang is reporting: $ make HOSTCC=clang CC=clang LLVM_IAS=1 clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS $(pkg-config --cflags libtracefs) -I include -c -o src/in_kernel.o src/in_kernel.c [...] src/in_kernel.c:227:6: warning: variable 'curr_reactor' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 227 | if (!end) | ^~~~ src/in_kernel.c:242:9: note: uninitialized use occurs here 242 | return curr_reactor; | ^~~~~~~~~~~~ src/in_kernel.c:227:2: note: remove the 'if' if its condition is always false 227 | if (!end) | ^~~~~~~~~ 228 | goto out_free; | ~~~~~~~~~~~~~ src/in_kernel.c:221:6: warning: variable 'curr_reactor' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 221 | if (!start) | ^~~~~~ src/in_kernel.c:242:9: note: uninitialized use occurs here 242 | return curr_reactor; | ^~~~~~~~~~~~ src/in_kernel.c:221:2: note: remove the 'if' if its condition is always false 221 | if (!start) | ^~~~~~~~~~~ 222 | goto out_free; | ~~~~~~~~~~~~~ src/in_kernel.c:215:20: note: initialize the variable 'curr_reactor' to silence this warning 215 | char *curr_reactor; | ^ | = NULL 2 warnings generated. Which is correct. Setting curr_reactor to NULL avoids the problem. Link: https://lkml.kernel.org/r/3a35551149e5ee0cb0950035afcb8082c3b5d05b.1707217097.git.bristot@kernel.org Cc: [email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Bill Wendling <[email protected]> Cc: Justin Stitt <[email protected]> Cc: Donald Zickus <[email protected]> Fixes: 6d60f89691fc ("tools/rv: Add in-kernel monitor interface") Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
2024-02-12tools/rv: Fix Makefile compiler options for clangDaniel Bristot de Oliveira1-1/+6
The following errors are showing up when compiling rv with clang: $ make HOSTCC=clang CC=clang LLVM_IAS=1 [...] clang -O -g -DVERSION=\"6.8.0-rc1\" -flto=auto -ffat-lto-objects -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized $(pkg-config --cflags libtracefs) -I include -c -o src/utils.o src/utils.c clang: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument] warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option] 1 warning generated. clang -o rv -ggdb src/in_kernel.o src/rv.o src/trace.o src/utils.o $(pkg-config --libs libtracefs) src/in_kernel.o: file not recognized: file format not recognized clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [Makefile:110: rv] Error 1 Solve these issues by: - removing -ffat-lto-objects and -Wno-maybe-uninitialized if using clang - informing the linker about -flto=auto Link: https://lkml.kernel.org/r/ed94a8ddc2ca8c8ef663cfb7ae9dd196c4a66b33.1707217097.git.bristot@kernel.org Cc: [email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Bill Wendling <[email protected]> Cc: Justin Stitt <[email protected]> Fixes: 4bc4b131d44c ("rv: Add rv tool") Suggested-by: Donald Zickus <[email protected]> Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
2024-02-12tools/rtla: Remove unused sched_getattr() functionDaniel Bristot de Oliveira1-6/+0
Clang is reporting: $ make HOSTCC=clang CC=clang LLVM_IAS=1 [...] clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS $(pkg-config --cflags libtracefs) -c -o src/utils.o src/utils.c src/utils.c:241:19: warning: unused function 'sched_getattr' [-Wunused-function] 241 | static inline int sched_getattr(pid_t pid, struct sched_attr *attr, | ^~~~~~~~~~~~~ 1 warning generated. Which is correct, so remove the unused function. Link: https://lkml.kernel.org/r/eaed7ba122c4ae88ce71277c824ef41cbf789385.1707217097.git.bristot@kernel.org Cc: [email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Bill Wendling <[email protected]> Cc: Justin Stitt <[email protected]> Cc: Donald Zickus <[email protected]> Fixes: b1696371d865 ("rtla: Helper functions for rtla") Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
2024-02-12tools/rtla: Fix clang warning about mount_point var sizeDaniel Bristot de Oliveira1-1/+1
clang is reporting this warning: $ make HOSTCC=clang CC=clang LLVM_IAS=1 [...] clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS $(pkg-config --cflags libtracefs) -c -o src/utils.o src/utils.c src/utils.c:548:66: warning: 'fscanf' may overflow; destination buffer in argument 3 has size 1024, but the corresponding specifier may require size 1025 [-Wfortify-source] 548 | while (fscanf(fp, "%*s %" STR(MAX_PATH) "s %99s %*s %*d %*d\n", mount_point, type) == 2) { | ^ Increase mount_point variable size to MAX_PATH+1 to avoid the overflow. Link: https://lkml.kernel.org/r/1b46712e93a2f4153909514a36016959dcc4021c.1707217097.git.bristot@kernel.org Cc: [email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Bill Wendling <[email protected]> Cc: Justin Stitt <[email protected]> Cc: Donald Zickus <[email protected]> Fixes: a957cbc02531 ("rtla: Add -C cgroup support") Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
2024-02-12tools/rtla: Fix uninitialized bucket/data->bucket_size warningDaniel Bristot de Oliveira2-4/+2
When compiling rtla with clang, I am getting the following warnings: $ make HOSTCC=clang CC=clang LLVM_IAS=1 [..] clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS $(pkg-config --cflags libtracefs) -c -o src/osnoise_hist.o src/osnoise_hist.c src/osnoise_hist.c:138:6: warning: variable 'bucket' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] 138 | if (data->bucket_size) | ^~~~~~~~~~~~~~~~~ src/osnoise_hist.c:149:6: note: uninitialized use occurs here 149 | if (bucket < entries) | ^~~~~~ src/osnoise_hist.c:138:2: note: remove the 'if' if its condition is always true 138 | if (data->bucket_size) | ^~~~~~~~~~~~~~~~~~~~~~ 139 | bucket = duration / data->bucket_size; src/osnoise_hist.c:132:12: note: initialize the variable 'bucket' to silence this warning 132 | int bucket; | ^ | = 0 1 warning generated. [...] clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS $(pkg-config --cflags libtracefs) -c -o src/timerlat_hist.o src/timerlat_hist.c src/timerlat_hist.c:181:6: warning: variable 'bucket' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] 181 | if (data->bucket_size) | ^~~~~~~~~~~~~~~~~ src/timerlat_hist.c:204:6: note: uninitialized use occurs here 204 | if (bucket < entries) | ^~~~~~ src/timerlat_hist.c:181:2: note: remove the 'if' if its condition is always true 181 | if (data->bucket_size) | ^~~~~~~~~~~~~~~~~~~~~~ 182 | bucket = latency / data->bucket_size; src/timerlat_hist.c:175:12: note: initialize the variable 'bucket' to silence this warning 175 | int bucket; | ^ | = 0 1 warning generated. This is a legit warning, but data->bucket_size is always > 0 (see timerlat_hist_parse_args()), so the if is not necessary. Remove the unneeded if (data->bucket_size) to avoid the warning. Link: https://lkml.kernel.org/r/6e1b1665cd99042ae705b3e0fc410858c4c42346.1707217097.git.bristot@kernel.org Cc: [email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Bill Wendling <[email protected]> Cc: Justin Stitt <[email protected]> Cc: Donald Zickus <[email protected]> Fixes: 1eeb6328e8b3 ("rtla/timerlat: Add timerlat hist mode") Fixes: 829a6c0b5698 ("rtla/osnoise: Add the hist mode") Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
2024-02-12tools/rtla: Fix Makefile compiler options for clangDaniel Bristot de Oliveira1-1/+6
The following errors are showing up when compiling rtla with clang: $ make HOSTCC=clang CC=clang LLVM_IAS=1 [...] clang -O -g -DVERSION=\"6.8.0-rc1\" -flto=auto -ffat-lto-objects -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized $(pkg-config --cflags libtracefs) -c -o src/utils.o src/utils.c clang: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument] warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option] 1 warning generated. clang -o rtla -ggdb src/osnoise.o src/osnoise_hist.o src/osnoise_top.o src/rtla.o src/timerlat_aa.o src/timerlat.o src/timerlat_hist.o src/timerlat_top.o src/timerlat_u.o src/trace.o src/utils.o $(pkg-config --libs libtracefs) src/osnoise.o: file not recognized: file format not recognized clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [Makefile:110: rtla] Error 1 Solve these issues by: - removing -ffat-lto-objects and -Wno-maybe-uninitialized if using clang - informing the linker about -flto=auto Link: https://lore.kernel.org/linux-trace-kernel/567ac1b94effc228ce9a0225b9df7232a9b35b55.1707217097.git.bristot@kernel.org Cc: [email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nick Desaulniers <[email protected]> Cc: Bill Wendling <[email protected]> Cc: Justin Stitt <[email protected]> Fixes: 1a7b22ab15eb ("tools/rtla: Build with EXTRA_{C,LD}FLAGS") Suggested-by: Donald Zickus <[email protected]> Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
2024-02-12accel/ivpu: Fix DevTLB errors on suspend/resume and recoveryJacek Lawrynowicz2-29/+54
Issue IP reset before shutdown in order to complete all upstream requests to the SOC. Without this DevTLB is complaining about incomplete transactions and NPU cannot resume from suspend. This problem is only happening on recent IFWI releases. IP reset in rare corner cases can mess up PCI configuration, so save it before the reset. After this happens it is also impossible to issue PLL requests and D0->D3->D0 cycle is needed to recover the NPU. Add WP 0 request on power up, so the PUNIT is always notified about NPU reset. Use D0/D3 cycle for recovery as it can recover from failed IP reset and FLR cannot. Fixes: 3f7c0634926d ("accel/ivpu/37xx: Fix hangs related to MMIO reset") Signed-off-by: Jacek Lawrynowicz <[email protected]> Reviewed-by: Jeffrey Hugo <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2024-02-12ASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHTMark Brown8-11/+17
Merge series from Hans de Goede <[email protected]>: While testing 6.8 on a Bay Trail device with a ALC5640 codec I noticed a regression in 6.8 which causes a NULL pointer deref in probe(). All BYT/CHT Intel machine drivers are affected. Patch 1/2 of this series fixes all of them. Patch 2/2 adds some small cleanups to cht_bsw_rt5645.c for issues which I noticed while working on 1/2.
2024-02-11cifs: update the same create_guid on replayShyam Prasad N4-2/+14
File open requests made to the server contain a CreateGuid, which is used by the server to identify the open request. If the same request needs to be replayed, it needs to be sent with the same CreateGuid in the durable handle v2 context. Without doing so, we could end up leaking handles on the server when: 1. multichannel is used AND 2. connection goes down, but not for all channels This is because the replayed open request would have a new CreateGuid and the server will treat this as a new request and open a new handle. This change fixes this by reusing the existing create_guid stored in the cached fid struct. REF: MS-SMB2 4.9 Replay Create Request on an Alternate Channel Fixes: 4f1fffa23769 ("cifs: commands that are retried should have replay flag set") Signed-off-by: Shyam Prasad N <[email protected]> Signed-off-by: Steve French <[email protected]>
2024-02-11cifs: fix underflow in parse_server_interfaces()Dan Carpenter1-1/+1
In this loop, we step through the buffer and after each item we check if the size_left is greater than the minimum size we need. However, the problem is that "bytes_left" is type ssize_t while sizeof() is type size_t. That means that because of type promotion, the comparison is done as an unsigned and if we have negative bytes left the loop continues instead of ending. Fixes: fe856be475f7 ("CIFS: parse and store info on iface queries") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Shyam Prasad N <[email protected]> Signed-off-by: Steve French <[email protected]>
2024-02-11Linux 6.8-rc4Linus Torvalds1-1/+1
2024-02-11Merge tag 'timers_urgent_for_v6.8_rc4' of ↵Linus Torvalds2-1/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fix from Borislav Petkov: - Make sure a warning is issued when a hrtimer gets queued after the timers have been migrated on the CPU down path and thus said timer will get ignored * tag 'timers_urgent_for_v6.8_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: hrtimer: Report offline hrtimer enqueue
2024-02-11Merge tag 'x86_urgent_for_v6.8_rc4' of ↵Linus Torvalds4-31/+28
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Correct the minimum CPU family for Transmeta Crusoe in Kconfig so that such hw can boot again - Do not take into accout XSTATE buffer size info supplied by userspace when constructing a sigreturn frame - Switch get_/put_user* to EX_TYPE_UACCESS exception handling when an MCE is encountered so that it can be properly recovered from instead of simply panicking * tag 'x86_urgent_for_v6.8_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/Kconfig: Transmeta Crusoe is CPU family 5, not 6 x86/fpu: Stop relying on userspace for info to fault in xsave buffer x86/lib: Revert to _ASM_EXTABLE_UA() for {get,put}_user() fixups
2024-02-11ASoC: SOF: amd: Fix locking in ACP IRQ handlerCristian Ciocaltea2-9/+10
A recent change in acp_irq_thread() was meant to address a potential race condition while trying to acquire the hardware semaphore responsible for the synchronization between firmware and host IPC interrupts. This resulted in an improper use of the IPC spinlock, causing normal kernel memory allocations (which may sleep) inside atomic contexts: 1707255557.133976 kernel: BUG: sleeping function called from invalid context at include/linux/sched/mm.h:315 ... 1707255557.134757 kernel: sof_ipc3_rx_msg+0x70/0x130 [snd_sof] 1707255557.134793 kernel: acp_sof_ipc_irq_thread+0x1e0/0x550 [snd_sof_amd_acp] 1707255557.134855 kernel: acp_irq_thread+0xa3/0x130 [snd_sof_amd_acp] 1707255557.134904 kernel: ? irq_thread+0xb5/0x1e0 1707255557.134947 kernel: ? __pfx_irq_thread_fn+0x10/0x10 1707255557.134985 kernel: irq_thread_fn+0x23/0x60 Moreover, there are attempts to lock a mutex from the same atomic context: 1707255557.136357 kernel: ============================= 1707255557.136393 kernel: [ BUG: Invalid wait context ] 1707255557.136413 kernel: 6.8.0-rc3-next-20240206-audio-next #9 Tainted: G W 1707255557.136432 kernel: ----------------------------- 1707255557.136451 kernel: irq/66-AudioDSP/502 is trying to lock: 1707255557.136470 kernel: ffff965152f26af8 (&sb->s_type->i_mutex_key#2){+.+.}-{3:3}, at: start_creating.part.0+0x5f/0x180 ... 1707255557.137429 kernel: start_creating.part.0+0x5f/0x180 1707255557.137457 kernel: __debugfs_create_file+0x61/0x210 1707255557.137475 kernel: snd_sof_debugfs_io_item+0x75/0xc0 [snd_sof] 1707255557.137494 kernel: sof_ipc3_do_rx_work+0x7cf/0x9f0 [snd_sof] 1707255557.137513 kernel: sof_ipc3_rx_msg+0xb3/0x130 [snd_sof] 1707255557.137532 kernel: acp_sof_ipc_irq_thread+0x1e0/0x550 [snd_sof_amd_acp] 1707255557.137551 kernel: acp_irq_thread+0xa3/0x130 [snd_sof_amd_acp] Fix the issues by reducing the lock scope in acp_irq_thread(), so that it guards only the hardware semaphore acquiring attempt. Additionally, restore the initial locking in acp_sof_ipc_irq_thread() to synchronize the handling of immediate replies from DSP core. Fixes: 802134c8c2c8 ("ASoC: SOF: amd: Refactor spinlock_irq(&sdev->ipc_lock) sequence in irq_handler") Signed-off-by: Cristian Ciocaltea <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2024-02-11ASoC: rt5645: Fix deadlock in rt5645_jack_detect_work()Alexey Khoroshilov1-0/+1
There is a path in rt5645_jack_detect_work(), where rt5645->jd_mutex is left locked forever. That may lead to deadlock when rt5645_jack_detect_work() is called for the second time. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: cdba4301adda ("ASoC: rt5650: add mutex to avoid the jack detection failure") Signed-off-by: Alexey Khoroshilov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2024-02-11spi: ppc4xx: Drop write-only variableUwe Kleine-König1-5/+0
Since commit 24778be20f87 ("spi: convert drivers to use bits_per_word_mask") the bits_per_word variable is only written to. The check that was there before isn't needed any more as the spi core ensures that only 8 bit transfers are used, so the variable can go away together with all assignments to it. Fixes: 24778be20f87 ("spi: convert drivers to use bits_per_word_mask") Signed-off-by: Uwe Kleine-König <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2024-02-11spi: ppc4xx: Fix fallout from rename in struct spi_bitbangUwe Kleine-König1-7/+7
I failed to adapt this driver because it's not enabled in a powerpc allmodconfig build and also wasn't hit by my grep expertise. Fix accordingly. Reported-by: kernel test robot <[email protected]> Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ Fixes: 2259233110d9 ("spi: bitbang: Follow renaming of SPI "master" to "controller"") Signed-off-by: Uwe Kleine-König <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2024-02-11spi: ppc4xx: Fix fallout from include cleanupUwe Kleine-König1-0/+1
The driver uses several symbols declared in <linux/platform_device.h>, e.g module_platform_driver(). Include this header explicitly now that <linux/of_platform.h> doesn't include <linux/platform_device.h> any more. Fixes: ef175b29a242 ("of: Stop circularly including of_device.h and of_platform.h") Signed-off-by: Uwe Kleine-König <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2024-02-11ASoC: Intel: cht_bsw_rt5645: Cleanup codec_name handlingHans de Goede1-5/+3
4 fixes / cleanups to the rt5645 mc driver's codec_name handling: 1. In the for loop looking for the dai_index for the codec, replace card->dai_link[i] with cht_dailink[i]. The for loop already uses ARRAY_SIZE(cht_dailink) as bound and card->dai_link is just a pointer to cht_dailink using card->dai_link only obfuscates that cht_dailink is being modified directly rather then say a copy of cht_dailink. Using cht_dailink[i] also makes the code consistent with other machine drivers. 2. Don't set cht_dailink[dai_index].codecs->name in the for loop, this immediately gets overridden using acpi_dev_name(adev) directly below the loop. 3. Add a missing break to the loop. 4. Remove the now no longer used (only set, never read) codec_name field from struct cht_mc_private. Signed-off-by: Hans de Goede <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2024-02-11ASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHT boardsHans de Goede8-8/+16
Since commit 13f58267cda3 ("ASoC: soc.h: don't create dummy Component via COMP_DUMMY()") dummy snd_soc_dai_link.codecs entries no longer have a name set. This means that when looking for the codec dai_link the machine driver can no longer unconditionally run strcmp() on snd_soc_dai_link.codecs[0].name since this may now be NULL. Add a check for snd_soc_dai_link.codecs[0].name being NULL to all BYT/CHT machine drivers to avoid NULL pointer dereferences in their probe() methods. Fixes: 13f58267cda3 ("ASoC: soc.h: don't create dummy Component via COMP_DUMMY()") Cc: Kuninori Morimoto <[email protected]> Signed-off-by: Hans de Goede <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2024-02-10Merge tag 'mm-hotfixes-stable-2024-02-10-11-16' of ↵Linus Torvalds17-101/+162
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "21 hotfixes. 12 are cc:stable and the remainder pertain to post-6.7 issues or aren't considered to be needed in earlier kernel versions" * tag 'mm-hotfixes-stable-2024-02-10-11-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits) nilfs2: fix potential bug in end_buffer_async_write mm/damon/sysfs-schemes: fix wrong DAMOS tried regions update timeout setup nilfs2: fix hang in nilfs_lookup_dirty_data_buffers() MAINTAINERS: Leo Yan has moved mm/zswap: don't return LRU_SKIP if we have dropped lru lock fs,hugetlb: fix NULL pointer dereference in hugetlbs_fill_super mailmap: switch email address for John Moon mm: zswap: fix objcg use-after-free in entry destruction mm/madvise: don't forget to leave lazy MMU mode in madvise_cold_or_pageout_pte_range() arch/arm/mm: fix major fault accounting when retrying under per-VMA lock selftests: core: include linux/close_range.h for CLOSE_RANGE_* macros mm/memory-failure: fix crash in split_huge_page_to_list from soft_offline_page mm: memcg: optimize parent iteration in memcg_rstat_updated() nilfs2: fix data corruption in dsync block recovery for small block sizes mm/userfaultfd: UFFDIO_MOVE implementation should use ptep_get() exit: wait_task_zombie: kill the no longer necessary spin_lock_irq(siglock) fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats fs/proc: do_task_stat: move thread_group_cputime_adjusted() outside of lock_task_sighand() getrusage: use sig->stats_lock rather than lock_task_sighand() getrusage: move thread_group_cputime_adjusted() outside of lock_task_sighand() ...
2024-02-10bcachefs: fix missing endiannes conversion in sb_membersKent Overstreet1-1/+1
Signed-off-by: Kent Overstreet <[email protected]>
2024-02-10bcachefs: fix kmemleak in __bch2_read_super error handling pathSu Yue1-1/+1
During xfstest tests, there are some kmemleak reports e.g. generic/051 with if USE_KMEMLEAK=yes: ==================================================================== EXPERIMENTAL kmemleak reported some memory leaks! Due to the way kmemleak works, the leak might be from an earlier test, or something totally unrelated. unreferenced object 0xffff9ef905aaf778 (size 8): comm "mount.bcachefs", pid 169844, jiffies 4295281209 (age 87.040s) hex dump (first 8 bytes): a5 cc cc cc cc cc cc cc ........ backtrace: [<ffffffff87fd9a43>] __kmem_cache_alloc_node+0x1f3/0x2c0 [<ffffffff87f49b66>] kmalloc_trace+0x26/0xb0 [<ffffffffc0a3fefe>] __bch2_read_super+0xfe/0x4e0 [bcachefs] [<ffffffffc0a3ad22>] bch2_fs_open+0x262/0x1710 [bcachefs] [<ffffffffc09c9e24>] bch2_mount+0x4c4/0x640 [bcachefs] [<ffffffff88080c90>] legacy_get_tree+0x30/0x60 [<ffffffff8802c748>] vfs_get_tree+0x28/0xf0 [<ffffffff88061fe5>] path_mount+0x475/0xb60 [<ffffffff880627e5>] __x64_sys_mount+0x105/0x140 [<ffffffff88932642>] do_syscall_64+0x42/0xf0 [<ffffffff88a000e6>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 unreferenced object 0xffff9ef96cdc4fc0 (size 32): comm "mount.bcachefs", pid 169844, jiffies 4295281209 (age 87.040s) hex dump (first 32 bytes): 2f 64 65 76 2f 6d 61 70 70 65 72 2f 74 65 73 74 /dev/mapper/test 2d 31 00 cc cc cc cc cc cc cc cc cc cc cc cc cc -1.............. backtrace: [<ffffffff87fd9a43>] __kmem_cache_alloc_node+0x1f3/0x2c0 [<ffffffff87f4a081>] __kmalloc_node_track_caller+0x51/0x150 [<ffffffff87f3adc2>] kstrdup+0x32/0x60 [<ffffffffc0a3ff1a>] __bch2_read_super+0x11a/0x4e0 [bcachefs] [<ffffffffc0a3ad22>] bch2_fs_open+0x262/0x1710 [bcachefs] [<ffffffffc09c9e24>] bch2_mount+0x4c4/0x640 [bcachefs] [<ffffffff88080c90>] legacy_get_tree+0x30/0x60 [<ffffffff8802c748>] vfs_get_tree+0x28/0xf0 [<ffffffff88061fe5>] path_mount+0x475/0xb60 [<ffffffff880627e5>] __x64_sys_mount+0x105/0x140 [<ffffffff88932642>] do_syscall_64+0x42/0xf0 [<ffffffff88a000e6>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 ==================================================================== The leak happens if bdev_open_by_path() failed to open a block device then it goes label 'out' directly without call of bch2_free_super(). Fix it by going to label 'err' instead of 'out' if bdev_open_by_path() fails. Signed-off-by: Su Yue <[email protected]> Signed-off-by: Kent Overstreet <[email protected]>
2024-02-10bcachefs: Fix missing bch2_err_class() callsKent Overstreet1-4/+5
We aren't supposed to be leaking our private error codes outside of fs/bcachefs/. Fixes: Signed-off-by: Kent Overstreet <[email protected]>
2024-02-10Merge branch 'tls-fixes'David S. Miller3-82/+66
Jakub Kicinski says: ==================== net: tls: fix some issues with async encryption valis was reporting a race on socket close so I sat down to try to fix it. I used Sabrina's async crypto debug patch to test... and in the process run into some of the same issues, and created very similar fixes :( I didn't realize how many of those patches weren't applied. Once I found Sabrina's code [1] it turned out to be so similar in fact that I added her S-o-b's and Co-develop'eds in a semi-haphazard way. With this series in place all expected tests pass with async crypto. Sabrina had a few more fixes, but I'll leave those to her, things are not crashing anymore. [1] https://lore.kernel.org/netdev/[email protected]/ ==================== Signed-off-by: David S. Miller <[email protected]>
2024-02-10net: tls: fix returned read length with async decryptJakub Kicinski1-1/+0
We double count async, non-zc rx data. The previous fix was lucky because if we fully zc async_copy_bytes is 0 so we add 0. Decrypted already has all the bytes we handled, in all cases. We don't have to adjust anything, delete the erroneous line. Fixes: 4d42cd6bc2ac ("tls: rx: fix return value for async crypto") Co-developed-by: Sabrina Dubroca <[email protected]> Signed-off-by: Sabrina Dubroca <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-10selftests: tls: use exact comparison in recv_partialJakub Kicinski1-4/+4
This exact case was fail for async crypto and we weren't catching it. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-10net: tls: fix use-after-free with partial reads and async decryptSabrina Dubroca1-2/+3
tls_decrypt_sg doesn't take a reference on the pages from clear_skb, so the put_page() in tls_decrypt_done releases them, and we trigger a use-after-free in process_rx_list when we try to read from the partially-read skb. Fixes: fd31f3996af2 ("tls: rx: decrypt into a fresh skb") Signed-off-by: Sabrina Dubroca <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-10net: tls: handle backlogging of crypto requestsJakub Kicinski1-0/+22
Since we're setting the CRYPTO_TFM_REQ_MAY_BACKLOG flag on our requests to the crypto API, crypto_aead_{encrypt,decrypt} can return -EBUSY instead of -EINPROGRESS in valid situations. For example, when the cryptd queue for AESNI is full (easy to trigger with an artificially low cryptd.cryptd_max_cpu_qlen), requests will be enqueued to the backlog but still processed. In that case, the async callback will also be called twice: first with err == -EINPROGRESS, which it seems we can just ignore, then with err == 0. Compared to Sabrina's original patch this version uses the new tls_*crypt_async_wait() helpers and converts the EBUSY to EINPROGRESS to avoid having to modify all the error handling paths. The handling is identical. Fixes: a54667f6728c ("tls: Add support for encryption using async offload accelerator") Fixes: 94524d8fc965 ("net/tls: Add support for async decryption of tls records") Co-developed-by: Sabrina Dubroca <[email protected]> Signed-off-by: Sabrina Dubroca <[email protected]> Link: https://lore.kernel.org/netdev/9681d1febfec295449a62300938ed2ae66983f28.1694018970.git.sd@queasysnail.net/ Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-10tls: fix race between tx work scheduling and socket closeJakub Kicinski1-10/+6
Similarly to previous commit, the submitting thread (recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete(). Reorder scheduling the work before calling complete(). This seems more logical in the first place, as it's the inverse order of what the submitting thread will do. Reported-by: valis <[email protected]> Fixes: a42055e8d2c3 ("net/tls: Add support for async encryption of records for performance") Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Reviewed-by: Sabrina Dubroca <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-10tls: fix race between async notify and socket closeJakub Kicinski2-38/+10
The submitting thread (one which called recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete() so any code past that point risks touching already freed data. Try to avoid the locking and extra flags altogether. Have the main thread hold an extra reference, this way we can depend solely on the atomic ref counter for synchronization. Don't futz with reiniting the completion, either, we are now tightly controlling when completion fires. Reported-by: valis <[email protected]> Fixes: 0cada33241d9 ("net/tls: fix race condition causing kernel panic") Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Reviewed-by: Eric Dumazet <[email protected]> Reviewed-by: Sabrina Dubroca <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2024-02-10net: tls: factor out tls_*crypt_async_wait()Jakub Kicinski1-51/+45
Factor out waiting for async encrypt and decrypt to finish. There are already multiple copies and a subsequent fix will need more. No functional changes. Note that crypto_wait_req() returns wait->err Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Simon Horman <[email protected]> Reviewed-by: Sabrina Dubroca <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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