On 2023-02-15 6:02 p.m., Jens Axboe wrote:
This is not related to Helge's patch, 6.1-stable is just still missing:
commit fcc926bb857949dbfa51a7d95f3f5ebc657f198c
Author: Jens Axboe<axboe@xxxxxxxxx>
Date: Fri Jan 27 09:28:13 2023 -0700
io_uring: add a conditional reschedule to the IOPOLL cancelation loop
and I'm guessing you're running without preempt.
With 6.2.0-rc8+, I had a different crash running poll-race-mshot.t:
Backtrace:
Kernel Fault: Code=15 (Data TLB miss fault) at addr 0000000000000000
CPU: 0 PID: 18265 Comm: poll-race-mshot Not tainted 6.2.0-rc8+ #1
Hardware name: 9000/800/rp3440
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00010000001001001001000111110000 Not tainted
r00-03 00000000102491f0 ffffffffffffffff 000000004020307c ffffffffffffffff
r04-07 ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff
r08-11 ffffffffffffffff 000000000407ef28 000000000407f838 8400000000800000
r12-15 0000000000000000 0000000040c424e0 0000000040c424e0 0000000040c424e0
r16-19 000000000407fd68 0000000063f08648 0000000040c424e0 000000000a085000
r20-23 00000000000d6b44 000000002faf0800 00000000000000ff 0000000000000002
r24-27 000000000407fa30 000000000407fd68 0000000000000000 0000000040c1e4e0
r28-31 400000000000de84 0000000000000000 0000000000000000 0000000000000002
sr00-03 0000000004081000 0000000000000000 0000000000000000 0000000004081de0
sr04-07 0000000004081000 0000000000000000 0000000000000000 00000000040815a8
IASQ: 0000000004081000 0000000000000000 IAOQ: 0000000000000000 0000000004081590
IIR: 00000000 ISR: 0000000000000000 IOR: 0000000000000000
CPU: 0 CR30: 000000004daf5700 CR31: ffffffffffffefff
ORIG_R28: 0000000000000000
IAOQ[0]: 0x0
IAOQ[1]: linear_quiesce+0x0/0x18 [linear]
RP(r2): intr_check_sig+0x0/0x3c
Backtrace:
Kernel panic - not syncing: Kernel Fault
Dave
--
John David Anglin dave.anglin@xxxxxxxx
