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| author | Luo Haiyang <luo.haiyang@zte.com.cn> | 2026-01-13 11:19:30 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-01-13 09:51:46 +0100 |
| commit | f2edf797dab185cce439e5bc5185fe20dd536300 (patch) | |
| tree | df2856ffa09fc274278816e825c07f6a50f3b87d /scripts/atomic/git@git.tavy.me:linux.git | |
| parent | 0f61b1860cc3f52aef9036d7235ed1f017632193 (diff) | |
irqchip/riscv-imsic: Revert "Remove redundant irq_data lookups"
Commit c475c0b71314("irqchip/riscv-imsic: Remove redundant irq_data
lookups") leads to a NULL pointer deference in imsic_msi_update_msg():
virtio_blk virtio1: 8/0/0 default/read/poll queues
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Current kworker/u32:2 pgtable: 4K pagesize, 48-bit VAs, pgdp=0x0000000081c33000
[0000000000000000] pgd=0000000000000000, p4d=0000000000000000
CPU: 5 UID: 0 PID: 75 Comm: kworker/u32:2 Not tainted 6.19.0-rc4-next-20260109 #1 NONE
epc : 0x0
ra : imsic_irq_set_affinity+0x110/0x130
The irq_data argument of imsic_irq_set_affinity() is associated with the
imsic domain and not with the top-level MSI domain. As a consequence the
code dereferences the wrong interrupt chip, which has the
irq_write_msi_msg() callback not populated.
Signed-off-by: Luo Haiyang <luo.haiyang@zte.com.cn>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260113111930821RrC26avITHWSFCN0bYbgI@zte.com.cn
Diffstat (limited to 'scripts/atomic/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions