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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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The following panic BUG_ON occurs during qib testing:
Kernel BUG at include/linux/timer.h:82
RIP [<ffffffff881f7109>] :ib_qib:start_timer+0x73/0x89
RSP <ffffffff80425bd0>
<0>Kernel panic - not syncing: Fatal exception
<0>Dumping qib trace buffer from panic
qib_set_lid INFO: IB0:1 got a lid: 0xf8
Done dumping qib trace buffer
BUG: warning at kernel/panic.c:137/panic() (Tainted: G
The flaw is due to a missing state test when processing responses that
results in an add_timer() call when the same timer is already queued.
This code was executing in parallel with a QP destroy on another CPU
that had changed the state to reset, but the missing test caused to
response handling code to run on into the panic.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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| .. | ||
| Kconfig | ||
| Makefile | ||
| qib_6120_regs.h | ||
| qib_7220_regs.h | ||
| qib_7220.h | ||
| qib_7322_regs.h | ||
| qib_common.h | ||
| qib_cq.c | ||
| qib_diag.c | ||
| qib_dma.c | ||
| qib_driver.c | ||
| qib_eeprom.c | ||
| qib_file_ops.c | ||
| qib_fs.c | ||
| qib_iba6120.c | ||
| qib_iba7220.c | ||
| qib_iba7322.c | ||
| qib_init.c | ||
| qib_intr.c | ||
| qib_keys.c | ||
| qib_mad.c | ||
| qib_mad.h | ||
| qib_mmap.c | ||
| qib_mr.c | ||
| qib_pcie.c | ||
| qib_pio_copy.c | ||
| qib_qp.c | ||
| qib_qsfp.c | ||
| qib_qsfp.h | ||
| qib_rc.c | ||
| qib_ruc.c | ||
| qib_sd7220.c | ||
| qib_sdma.c | ||
| qib_srq.c | ||
| qib_sysfs.c | ||
| qib_twsi.c | ||
| qib_tx.c | ||
| qib_uc.c | ||
| qib_ud.c | ||
| qib_user_pages.c | ||
| qib_user_sdma.c | ||
| qib_user_sdma.h | ||
| qib_verbs_mcast.c | ||
| qib_verbs.c | ||
| qib_verbs.h | ||
| qib_wc_ppc64.c | ||
| qib_wc_x86_64.c | ||
| qib.h | ||