bf692e7ef6
[ Upstream commit 6206b7981a36476f4695d661ae139f7db36a802d ] Liajian reported a bug_on hit on a ThunderX2 arm64 server with FastLinQ QL41000 ethernet controller: BUG: scheduling while atomic: kworker/0:4/531/0x00000200 [qed_probe:488()]hw prepare failed kernel BUG at mm/vmalloc.c:2355! Internal error: Oops - BUG: 0 [#1] SMP CPU: 0 PID: 531 Comm: kworker/0:4 Tainted: G W 5.4.0-77-generic #86-Ubuntu pstate: 00400009 (nzcv daif +PAN -UAO) Call trace: vunmap+0x4c/0x50 iounmap+0x48/0x58 qed_free_pci+0x60/0x80 [qed] qed_probe+0x35c/0x688 [qed] __qede_probe+0x88/0x5c8 [qede] qede_probe+0x60/0xe0 [qede] local_pci_probe+0x48/0xa0 work_for_cpu_fn+0x24/0x38 process_one_work+0x1d0/0x468 worker_thread+0x238/0x4e0 kthread+0xf0/0x118 ret_from_fork+0x10/0x18 In this case, qed_hw_prepare() returns error due to hw/fw error, but in theory work queue should be in process context instead of interrupt. The root cause might be the unpaired spin_{un}lock_bh() in _qed_mcp_cmd_and_union(), which causes botton half is disabled incorrectly. Reported-by: Lijian Zhang <Lijian.Zhang@arm.com> Signed-off-by: Jia He <justin.he@arm.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|---|---|---|
| .. | ||
| Makefile | ||
| qed.h | ||
| qed_cxt.c | ||
| qed_cxt.h | ||
| qed_dcbx.c | ||
| qed_dcbx.h | ||
| qed_debug.c | ||
| qed_debug.h | ||
| qed_dev.c | ||
| qed_dev_api.h | ||
| qed_fcoe.c | ||
| qed_fcoe.h | ||
| qed_hsi.h | ||
| qed_hw.c | ||
| qed_hw.h | ||
| qed_init_fw_funcs.c | ||
| qed_init_ops.c | ||
| qed_init_ops.h | ||
| qed_int.c | ||
| qed_int.h | ||
| qed_iscsi.c | ||
| qed_iscsi.h | ||
| qed_iwarp.c | ||
| qed_iwarp.h | ||
| qed_l2.c | ||
| qed_l2.h | ||
| qed_ll2.c | ||
| qed_ll2.h | ||
| qed_main.c | ||
| qed_mcp.c | ||
| qed_mcp.h | ||
| qed_mng_tlv.c | ||
| qed_ooo.c | ||
| qed_ooo.h | ||
| qed_ptp.c | ||
| qed_rdma.c | ||
| qed_rdma.h | ||
| qed_reg_addr.h | ||
| qed_roce.c | ||
| qed_roce.h | ||
| qed_selftest.c | ||
| qed_selftest.h | ||
| qed_sp.h | ||
| qed_sp_commands.c | ||
| qed_spq.c | ||
| qed_sriov.c | ||
| qed_sriov.h | ||
| qed_vf.c | ||
| qed_vf.h | ||