mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-15 09:14:18 -04:00
| Filename | Latest commit message | Latest commit date |
|---|---|---|
e6d1fa584e
Inside sbitmap_queue_clear(), once the clear bit is set, it will be
visiable to allocation path immediately. Meantime READ/WRITE on old
associated instance(such as request in case of blk-mq) may be
out-of-order with the setting clear bit, so race with re-allocation
may be triggered.
Adds one memory barrier for ordering READ/WRITE of the freed associated
instance with setting clear bit for avoiding race with re-allocation.
The following kernel oops triggerd by block/006 on aarch64 may be fixed:
[ 142.330954] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000330
[ 142.338794] Mem abort info:
[ 142.341554] ESR = 0x96000005
[ 142.344632] Exception class = DABT (current EL), IL = 32 bits
[ 142.350500] SET = 0, FnV = 0
[ 142.353544] EA = 0, S1PTW = 0
[ 142.356678] Data abort info:
[ 142.359528] ISV = 0, ISS = 0x00000005
[ 142.363343] CM = 0, WnR = 0
[ 142.366305] user pgtable: 64k pages, 48-bit VAs, pgdp = 000000002a3c51c0
[ 142.372983] [0000000000000330] pgd=0000000000000000, pud=0000000000000000
[ 142.379777] Internal error: Oops: 96000005 [#1] SMP
[ 142.384613] Modules linked in: null_blk ib_isert iscsi_target_mod ib_srpt target_core_mod ib_srp scsi_transport_srp vfat fat rpcrdma sunrpc rdma_ucm ib_iser rdma_cm iw_cm libiscsi ib_umad scsi_transport_iscsi ib_ipoib ib_cm mlx5_ib ib_uverbs ib_core sbsa_gwdt crct10dif_ce ghash_ce ipmi_ssif sha2_ce ipmi_devintf sha256_arm64 sg sha1_ce ipmi_msghandler ip_tables xfs libcrc32c mlx5_core sdhci_acpi mlxfw ahci_platform at803x sdhci libahci_platform qcom_emac mmc_core hdma hdma_mgmt i2c_dev [last unloaded: null_blk]
[ 142.429753] CPU: 7 PID: 1983 Comm: fio Not tainted 5.0.0.cki #2
[ 142.449458] pstate: 00400005 (nzcv daif +PAN -UAO)
[ 142.454239] pc : __blk_mq_free_request+0x4c/0xa8
[ 142.458830] lr : blk_mq_free_request+0xec/0x118
[ 142.463344] sp : ffff00003360f6a0
[ 142.466646] x29: ffff00003360f6a0 x28: ffff000010e70000
[ 142.471941] x27: ffff801729a50048 x26: 0000000000010000
[ 142.477232] x25: ffff00003360f954 x24: ffff7bdfff021440
[ 142.482529] x23: 0000000000000000 x22: 00000000ffffffff
[ 142.487830] x21: ffff801729810000 x20: 0000000000000000
[ 142.493123] x19: ffff801729a50000 x18: 0000000000000000
[ 142.498413] x17: 0000000000000000 x16: 0000000000000001
[ 142.503709] x15: 00000000000000ff x14: ffff7fe000000000
[ 142.509003] x13: ffff8017dcde09a0 x12: 0000000000000000
[ 142.514308] x11: 0000000000000001 x10: 0000000000000008
[ 142.519597] x9 : ffff8017dcde09a0 x8 : 0000000000002000
[ 142.524889] x7 : ffff8017dcde0a00 x6 : 000000015388f9be
[ 142.530187] x5 : 0000000000000001 x4 : 0000000000000000
[ 142.535478] x3 : 0000000000000000 x2 : 0000000000000000
[ 142.540777] x1 : 0000000000000001 x0 : ffff00001041b194
[ 142.546071] Process fio (pid: 1983, stack limit = 0x000000006460a0ea)
[ 142.552500] Call trace:
[ 142.554926] __blk_mq_free_request+0x4c/0xa8
[ 142.559181] blk_mq_free_request+0xec/0x118
[ 142.563352] blk_mq_end_request+0xfc/0x120
[ 142.567444] end_cmd+0x3c/0xa8 [null_blk]
[ 142.571434] null_complete_rq+0x20/0x30 [null_blk]
[ 142.576194] blk_mq_complete_request+0x108/0x148
[ 142.580797] null_handle_cmd+0x1d4/0x718 [null_blk]
[ 142.585662] null_queue_rq+0x60/0xa8 [null_blk]
[ 142.590171] blk_mq_try_issue_directly+0x148/0x280
[ 142.594949] blk_mq_try_issue_list_directly+0x9c/0x108
[ 142.600064] blk_mq_sched_insert_requests+0xb0/0xd0
[ 142.604926] blk_mq_flush_plug_list+0x16c/0x2a0
[ 142.609441] blk_flush_plug_list+0xec/0x118
[ 142.613608] blk_finish_plug+0x3c/0x4c
[ 142.617348] blkdev_direct_IO+0x3b4/0x428
[ 142.621336] generic_file_read_iter+0x84/0x180
[ 142.625761] blkdev_read_iter+0x50/0x78
[ 142.629579] aio_read.isra.6+0xf8/0x190
[ 142.633409] __io_submit_one.isra.8+0x148/0x738
[ 142.637912] io_submit_one.isra.9+0x88/0xb8
[ 142.642078] __arm64_sys_io_submit+0xe0/0x238
[ 142.646428] el0_svc_handler+0xa0/0x128
[ 142.650238] el0_svc+0x8/0xc
[ 142.653104] Code: b9402a63 f9000a7f 3100047f 540000a0 (f9419a81)
[ 142.659202] ---[ end trace 467586bc175eb09d ]---
Fixes:
|
||
| .. | ||
| 842 | ||
| fonts | ||
| livepatch | ||
| lz4 | ||
| lzo | ||
| mpi | ||
| raid6 | ||
| reed_solomon | ||
| xz | ||
| zlib_deflate | ||
| zlib_inflate | ||
| zstd | ||
| .gitignore | ||
| argv_split.c | ||
| ashldi3.c | ||
| ashrdi3.c | ||
| asn1_decoder.c | ||
| assoc_array.c | ||
| atomic64.c | ||
| atomic64_test.c | ||
| audit.c | ||
| bcd.c | ||
| bch.c | ||
| bitmap.c | ||
| bitrev.c | ||
| bsearch.c | ||
| btree.c | ||
| bucket_locks.c | ||
| bug.c | ||
| build_OID_registry | ||
| bust_spinlocks.c | ||
| chacha.c | ||
| check_signature.c | ||
| checksum.c | ||
| clz_ctz.c | ||
| clz_tab.c | ||
| cmdline.c | ||
| cmpdi2.c | ||
| compat_audit.c | ||
| cordic.c | ||
| cpu_rmap.c | ||
| cpumask.c | ||
| crc-ccitt.c | ||
| crc-itu-t.c | ||
| crc-t10dif.c | ||
| crc4.c | ||
| crc7.c | ||
| crc8.c | ||
| crc16.c | ||
| crc32.c | ||
| crc32defs.h | ||
| crc32test.c | ||
| crc64.c | ||
| ctype.c | ||
| debug_info.c | ||
| debug_locks.c | ||
| debugobjects.c | ||
| dec_and_lock.c | ||
| decompress.c | ||
| decompress_bunzip2.c | ||
| decompress_inflate.c | ||
| decompress_unlz4.c | ||
| decompress_unlzma.c | ||
| decompress_unlzo.c | ||
| decompress_unxz.c | ||
| devres.c | ||
| digsig.c | ||
| div64.c | ||
| dump_stack.c | ||
| dynamic_debug.c | ||
| dynamic_queue_limits.c | ||
| earlycpio.c | ||
| error-inject.c | ||
| errseq.c | ||
| extable.c | ||
| fault-inject.c | ||
| fdt.c | ||
| fdt_empty_tree.c | ||
| fdt_ro.c | ||
| fdt_rw.c | ||
| fdt_strerror.c | ||
| fdt_sw.c | ||
| fdt_wip.c | ||
| find_bit.c | ||
| find_bit_benchmark.c | ||
| flex_proportions.c | ||
| gcd.c | ||
| gen_crc32table.c | ||
| gen_crc64table.c | ||
| genalloc.c | ||
| generic-radix-tree.c | ||
| glob.c | ||
| globtest.c | ||
| hexdump.c | ||
| hweight.c | ||
| idr.c | ||
| inflate.c | ||
| int_sqrt.c | ||
| interval_tree.c | ||
| interval_tree_test.c | ||
| iomap.c | ||
| iomap_copy.c | ||
| iommu-helper.c | ||
| ioremap.c | ||
| iov_iter.c | ||
| irq_poll.c | ||
| irq_regs.c | ||
| is_single_threaded.c | ||
| jedec_ddr_data.c | ||
| kasprintf.c | ||
| Kconfig | ||
| Kconfig.debug | ||
| Kconfig.kasan | ||
| Kconfig.kgdb | ||
| Kconfig.ubsan | ||
| kfifo.c | ||
| klist.c | ||
| kobject.c | ||
| kobject_uevent.c | ||
| kstrtox.c | ||
| kstrtox.h | ||
| lcm.c | ||
| libcrc32c.c | ||
| list_debug.c | ||
| list_sort.c | ||
| llist.c | ||
| locking-selftest-hardirq.h | ||
| locking-selftest-mutex.h | ||
| locking-selftest-rlock-hardirq.h | ||
| locking-selftest-rlock-softirq.h | ||
| locking-selftest-rlock.h | ||
| locking-selftest-rsem.h | ||
| locking-selftest-rtmutex.h | ||
| locking-selftest-softirq.h | ||
| locking-selftest-spin-hardirq.h | ||
| locking-selftest-spin-softirq.h | ||
| locking-selftest-spin.h | ||
| locking-selftest-wlock-hardirq.h | ||
| locking-selftest-wlock-softirq.h | ||
| locking-selftest-wlock.h | ||
| locking-selftest-wsem.h | ||
| locking-selftest.c | ||
| lockref.c | ||
| logic_pio.c | ||
| lru_cache.c | ||
| lshrdi3.c | ||
| Makefile | ||
| memcat_p.c | ||
| memory-notifier-error-inject.c | ||
| memweight.c | ||
| muldi3.c | ||
| net_utils.c | ||
| netdev-notifier-error-inject.c | ||
| nlattr.c | ||
| nmi_backtrace.c | ||
| nodemask.c | ||
| notifier-error-inject.c | ||
| notifier-error-inject.h | ||
| objagg.c | ||
| of-reconfig-notifier-error-inject.c | ||
| oid_registry.c | ||
| once.c | ||
| parman.c | ||
| parser.c | ||
| pci_iomap.c | ||
| percpu-refcount.c | ||
| percpu_counter.c | ||
| percpu_test.c | ||
| plist.c | ||
| pm-notifier-error-inject.c | ||
| prime_numbers.c | ||
| radix-tree.c | ||
| random32.c | ||
| ratelimit.c | ||
| rational.c | ||
| rbtree.c | ||
| rbtree_test.c | ||
| reciprocal_div.c | ||
| refcount.c | ||
| rhashtable.c | ||
| sbitmap.c | ||
| scatterlist.c | ||
| seq_buf.c | ||
| sg_pool.c | ||
| sg_split.c | ||
| sha1.c | ||
| sha256.c | ||
| show_mem.c | ||
| siphash.c | ||
| smp_processor_id.c | ||
| sort.c | ||
| stackdepot.c | ||
| stmp_device.c | ||
| string.c | ||
| string_helpers.c | ||
| strncpy_from_user.c | ||
| strnlen_user.c | ||
| syscall.c | ||
| test-kstrtox.c | ||
| test-string_helpers.c | ||
| test_bitfield.c | ||
| test_bitmap.c | ||
| test_bpf.c | ||
| test_debug_virtual.c | ||
| test_firmware.c | ||
| test_hash.c | ||
| test_hexdump.c | ||
| test_ida.c | ||
| test_kasan.c | ||
| test_kmod.c | ||
| test_list_sort.c | ||
| test_memcat_p.c | ||
| test_module.c | ||
| test_objagg.c | ||
| test_overflow.c | ||
| test_parman.c | ||
| test_printf.c | ||
| test_rhashtable.c | ||
| test_siphash.c | ||
| test_sort.c | ||
| test_stackinit.c | ||
| test_static_key_base.c | ||
| test_static_keys.c | ||
| test_string.c | ||
| test_sysctl.c | ||
| test_ubsan.c | ||
| test_user_copy.c | ||
| test_uuid.c | ||
| test_vmalloc.c | ||
| test_xarray.c | ||
| textsearch.c | ||
| timerqueue.c | ||
| ts_bm.c | ||
| ts_fsm.c | ||
| ts_kmp.c | ||
| ubsan.c | ||
| ubsan.h | ||
| ucmpdi2.c | ||
| ucs2_string.c | ||
| usercopy.c | ||
| uuid.c | ||
| vsprintf.c | ||
| win_minmax.c | ||
| xarray.c | ||
| xxhash.c | ||