diff options
| author | Maurizio Lombardi <mlombard@redhat.com> | 2023-12-22 16:17:48 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-25 14:34:31 -0800 |
| commit | ee5e7632e981673f42a50ade25e71e612e543d9d (patch) | |
| tree | a1f5b826239e66ef375e51bd04420a4d93e12d52 /lib/test_overflow.c | |
| parent | 887ab0a444f0ab9738d55b3dd6293d9a84cb5ac8 (diff) | |
nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length
[ Upstream commit efa56305908ba20de2104f1b8508c6a7401833be ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions