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| author | Maurizio Lombardi <mlombard@redhat.com> | 2023-12-22 16:17:48 +0100 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2024-01-02 12:56:03 -0800 |
| commit | efa56305908ba20de2104f1b8508c6a7401833be (patch) | |
| tree | 4fccc97b4cf473cc71d772f71f45bd6688c3b3a2 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 31e4fac930814f2f92eb6ebac9c4d4e3b09f7aaf (diff) | |
nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length
If the host sends an H2CData command with an invalid DATAL,
the kernel may crash in nvmet_tcp_build_pdu_iovec().
Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000000
lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp]
Call trace:
process_one_work+0x174/0x3c8
worker_thread+0x2d0/0x3e8
kthread+0x104/0x110
Fix the bug by raising a fatal error if DATAL isn't coherent
with the packet size.
Also, the PDU length should never exceed the MAXH2CDATA parameter which
has been communicated to the host in nvmet_tcp_handle_icreq().
Fixes: 872d26a391da ("nvmet-tcp: add NVMe over TCP target driver")
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions