diff options
| author | Shifeng Li <lishifeng@sangfor.com.cn> | 2023-11-30 00:14:15 -0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-12-04 20:02:41 -0400 |
| commit | e3e82fcb79eeb3f1a88a89f676831773caff514a (patch) | |
| tree | e1bf64e1e594fc2e4b9abf3e2d80e79dda7797fa /drivers/infiniband | |
| parent | 03769f72d66edab82484449ed594cb6b00ae0223 (diff) | |
| download | lwn-e3e82fcb79eeb3f1a88a89f676831773caff514a.tar.gz lwn-e3e82fcb79eeb3f1a88a89f676831773caff514a.zip | |
RDMA/irdma: Avoid free the non-cqp_request scratch
When creating ceq_0 during probing irdma, cqp.sc_cqp will be sent as a
cqp_request to cqp->sc_cqp.sq_ring. If the request is pending when
removing the irdma driver or unplugging its aux device, cqp.sc_cqp will be
dereferenced as wrong struct in irdma_free_pending_cqp_request().
PID: 3669 TASK: ffff88aef892c000 CPU: 28 COMMAND: "kworker/28:0"
#0 [fffffe0000549e38] crash_nmi_callback at ffffffff810e3a34
#1 [fffffe0000549e40] nmi_handle at ffffffff810788b2
#2 [fffffe0000549ea0] default_do_nmi at ffffffff8107938f
#3 [fffffe0000549eb8] do_nmi at ffffffff81079582
#4 [fffffe0000549ef0] end_repeat_nmi at ffffffff82e016b4
[exception RIP: native_queued_spin_lock_slowpath+1291]
RIP: ffffffff8127e72b RSP: ffff88aa841ef778 RFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88b01f849700 RCX: ffffffff8127e47e
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff83857ec0
RBP: ffff88afe3e4efc8 R8: ffffed15fc7c9dfa R9: ffffed15fc7c9dfa
R10: 0000000000000001 R11: ffffed15fc7c9df9 R12: 0000000000740000
R13: ffff88b01f849708 R14: 0000000000000003 R15: ffffed1603f092e1
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0000
-- <NMI exception stack> --
#5 [ffff88aa841ef778] native_queued_spin_lock_slowpath at ffffffff8127e72b
#6 [ffff88aa841ef7b0] _raw_spin_lock_irqsave at ffffffff82c22aa4
#7 [ffff88aa841ef7c8] __wake_up_common_lock at ffffffff81257363
#8 [ffff88aa841ef888] irdma_free_pending_cqp_request at ffffffffa0ba12cc [irdma]
#9 [ffff88aa841ef958] irdma_cleanup_pending_cqp_op at ffffffffa0ba1469 [irdma]
#10 [ffff88aa841ef9c0] irdma_ctrl_deinit_hw at ffffffffa0b2989f [irdma]
#11 [ffff88aa841efa28] irdma_remove at ffffffffa0b252df [irdma]
#12 [ffff88aa841efae8] auxiliary_bus_remove at ffffffff8219afdb
#13 [ffff88aa841efb00] device_release_driver_internal at ffffffff821882e6
#14 [ffff88aa841efb38] bus_remove_device at ffffffff82184278
#15 [ffff88aa841efb88] device_del at ffffffff82179d23
#16 [ffff88aa841efc48] ice_unplug_aux_dev at ffffffffa0eb1c14 [ice]
#17 [ffff88aa841efc68] ice_service_task at ffffffffa0d88201 [ice]
#18 [ffff88aa841efde8] process_one_work at ffffffff811c589a
#19 [ffff88aa841efe60] worker_thread at ffffffff811c71ff
#20 [ffff88aa841eff10] kthread at ffffffff811d87a0
#21 [ffff88aa841eff50] ret_from_fork at ffffffff82e0022f
Fixes: 44d9e52977a1 ("RDMA/irdma: Implement device initialization definitions")
Link: https://lore.kernel.org/r/20231130081415.891006-1-lishifeng@sangfor.com.cn
Suggested-by: "Ismail, Mustafa" <mustafa.ismail@intel.com>
Signed-off-by: Shifeng Li <lishifeng@sangfor.com.cn>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/irdma/hw.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c index 64a382070e5c..bd4b2b896444 100644 --- a/drivers/infiniband/hw/irdma/hw.c +++ b/drivers/infiniband/hw/irdma/hw.c @@ -1184,7 +1184,6 @@ static int irdma_create_ceq(struct irdma_pci_f *rf, struct irdma_ceq *iwceq, int status; struct irdma_ceq_init_info info = {}; struct irdma_sc_dev *dev = &rf->sc_dev; - u64 scratch; u32 ceq_size; info.ceq_id = ceq_id; @@ -1205,14 +1204,13 @@ static int irdma_create_ceq(struct irdma_pci_f *rf, struct irdma_ceq *iwceq, iwceq->sc_ceq.ceq_id = ceq_id; info.dev = dev; info.vsi = vsi; - scratch = (uintptr_t)&rf->cqp.sc_cqp; status = irdma_sc_ceq_init(&iwceq->sc_ceq, &info); if (!status) { if (dev->ceq_valid) status = irdma_cqp_ceq_cmd(&rf->sc_dev, &iwceq->sc_ceq, IRDMA_OP_CEQ_CREATE); else - status = irdma_sc_cceq_create(&iwceq->sc_ceq, scratch); + status = irdma_sc_cceq_create(&iwceq->sc_ceq, 0); } if (status) { |