On Mon, 2024-07-01 at 17:56 +0200, Johannes Berg wrote: > Hmm. I also see a ton of this: > > BUG: sleeping function called from invalid context at > kernel/locking/rwsem.c:1525 > in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 538, name: > chan-switch.sh > preempt_count: 2, expected: 0 > RCU nest depth: 0, expected: 0 > no locks held by chan-switch.sh/538. > irq event stamp: 0 > hardirqs last enabled at (0): [<0000000000000000>] 0x0 > hardirqs last disabled at (0): [<000000006004b961>] copy_process+0xbb7/0x2790 > softirqs last enabled at (0): [<000000006004b961>] copy_process+0xbb7/0x2790 > softirqs last disabled at (0): [<0000000000000000>] 0x0 > Preemption disabled at: > [<0000000060084b04>] preempt_count_add+0x11f/0x126 > CPU: 0 PID: 538 Comm: chan-switch.sh Tainted: G W O 6.10.0-rc2 > #11 > Stack: > 714c7e40 605f2a9d 00000000 00000000 > ffffff00 607d2edc 00000000 60db7a48 > 714c7e70 60620823 0000022c 606161d1 > Call Trace: > [<606161d1>] ? _printk+0x0/0x94 > [<6002fa2f>] show_stack+0xfe/0x159 > [<605f2a9d>] ? dump_stack_print_info+0xe1/0xf0 > [<60620823>] dump_stack_lvl+0x77/0xbe > [<606161d1>] ? _printk+0x0/0x94 > [<60084b04>] ? preempt_count_add+0x11f/0x126 > [<60620884>] dump_stack+0x1a/0x1c > [<60085b82>] __might_resched+0x3b0/0x3d2 > [<60085ca0>] __might_sleep+0xfc/0x107 > [<60627212>] down_read+0x34/0x224 > [<60032256>] force_flush_all+0x71/0x10d
Which is, however, addressed by my own patchset https://patchwork.ozlabs.org/project/linux-um/list/?series=374492 though it doesn't apply completely cleanly any more. johannes
