Messages in this thread | | | From | Will Deacon <> | Subject | Re: [PATCH v4] firmware: arm_sdei: Fix sleep from invalid context BUG | Date | Tue, 28 Mar 2023 22:15:43 +0100 |
| |
On Thu, 16 Feb 2023 09:49:19 +0100, Pierre Gondois wrote: > Running a preemp_rt kernel based on vv6.2-rc3-rt1 based kernel on an > Ampere Altra triggers: > BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46 > in_atomic(): 0, irqs_disabled(): 128, non_block: 0, pid: 24, name: cpuhp/0 > preempt_count: 0, expected: 0 > RCU nest depth: 0, expected: 0 > 3 locks held by cpuhp/0/24: > #0: ffffda30217c70d0 (cpu_hotplug_lock){++++}-{0:0}, at: cpuhp_thread_fun+0x5c/0x248 > #1: ffffda30217c7120 (cpuhp_state-up){+.+.}-{0:0}, at: cpuhp_thread_fun+0x5c/0x248 > #2: ffffda3021c711f0 (sdei_list_lock){....}-{3:3}, at: sdei_cpuhp_up+0x3c/0x130 > irq event stamp: 36 > hardirqs last enabled at (35): [<ffffda301e85b7bc>] finish_task_switch+0xb4/0x2b0 > hardirqs last disabled at (36): [<ffffda301e812fec>] cpuhp_thread_fun+0x21c/0x248 > softirqs last enabled at (0): [<ffffda301e80b184>] copy_process+0x63c/0x1ac0 > softirqs last disabled at (0): [<0000000000000000>] 0x0 > CPU: 0 PID: 24 Comm: cpuhp/0 Not tainted 5.19.0-rc3-rt5-[...] > Hardware name: WIWYNN Mt.Jade Server [...] > Call trace: > dump_backtrace+0x114/0x120 > show_stack+0x20/0x70 > dump_stack_lvl+0x9c/0xd8 > dump_stack+0x18/0x34 > __might_resched+0x188/0x228 > rt_spin_lock+0x70/0x120 > sdei_cpuhp_up+0x3c/0x130 > cpuhp_invoke_callback+0x250/0xf08 > cpuhp_thread_fun+0x120/0x248 > smpboot_thread_fn+0x280/0x320 > kthread+0x130/0x140 > ret_from_fork+0x10/0x20 > > [...]
Applied to arm64 (for-next/misc), thanks!
[1/1] firmware: arm_sdei: Fix sleep from invalid context BUG https://git.kernel.org/arm64/c/d2c48b2387eb
Cheers, -- Will
https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev
| |