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================================================================== BUG: KCSAN: data-race in relay_switch_subbuf / relay_switch_subbuf write to 0xffff888120ba3638 of 8 bytes by task 23962 on cpu 0: relay_switch_subbuf+0x478/0x490 kernel/relay.c:790 relay_reserve include/linux/relay.h:261 [inline] __blk_add_trace+0x820/0x860 kernel/trace/blktrace.c:271 blk_add_trace_unplug+0x9f/0xd0 kernel/trace/blktrace.c:954 trace_block_unplug include/trace/events/block.h:501 [inline] blk_mq_flush_plug_list+0x66e/0x6c0 block/blk-mq.c:1732 blk_flush_plug_list+0x271/0x2a0 block/blk-core.c:1768 blk_mq_make_request+0x65e/0xf60 block/blk-mq.c:1975 generic_make_request block/blk-core.c:1066 [inline] generic_make_request+0x196/0x700 block/blk-core.c:1008 submit_bio+0x96/0x3c0 block/blk-core.c:1192 iomap_dio_submit_bio.isra.0+0xfc/0x120 fs/iomap/direct-io.c:70 iomap_dio_bio_actor+0x40a/0x960 fs/iomap/direct-io.c:306 iomap_dio_actor+0x87/0x3a0 fs/iomap/direct-io.c:382 iomap_apply+0x20d/0x6a0 fs/iomap/apply.c:80 iomap_dio_rw+0x67e/0x9a0 fs/iomap/direct-io.c:498 ext4_dio_write_iter fs/ext4/file.c:438 [inline] ext4_file_write_iter+0xc38/0xd40 fs/ext4/file.c:545 call_write_iter include/linux/fs.h:1902 [inline] new_sync_write+0x388/0x4a0 fs/read_write.c:483 __vfs_write+0xb1/0xc0 fs/read_write.c:496 vfs_write fs/read_write.c:558 [inline] vfs_write+0x18a/0x390 fs/read_write.c:542 ksys_write+0xd5/0x1b0 fs/read_write.c:611 __do_sys_write fs/read_write.c:623 [inline] __se_sys_write fs/read_write.c:620 [inline] __x64_sys_write+0x4c/0x60 fs/read_write.c:620 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff888120ba3638 of 8 bytes by task 23957 on cpu 1: relay_switch_subbuf+0x478/0x490 kernel/relay.c:790 relay_reserve include/linux/relay.h:261 [inline] __blk_add_trace+0x820/0x860 kernel/trace/blktrace.c:271 blk_add_trace_unplug+0x9f/0xd0 kernel/trace/blktrace.c:954 trace_block_unplug include/trace/events/block.h:501 [inline] blk_mq_flush_plug_list+0x66e/0x6c0 block/blk-mq.c:1732 blk_flush_plug_list+0x271/0x2a0 block/blk-core.c:1768 blk_mq_make_request+0x65e/0xf60 block/blk-mq.c:1975 generic_make_request block/blk-core.c:1066 [inline] generic_make_request+0x196/0x700 block/blk-core.c:1008 submit_bio+0x96/0x3c0 block/blk-core.c:1192 iomap_dio_submit_bio.isra.0+0xfc/0x120 fs/iomap/direct-io.c:70 iomap_dio_bio_actor+0x40a/0x960 fs/iomap/direct-io.c:306 iomap_dio_actor+0x87/0x3a0 fs/iomap/direct-io.c:382 iomap_apply+0x20d/0x6a0 fs/iomap/apply.c:80 iomap_dio_rw+0x67e/0x9a0 fs/iomap/direct-io.c:498 ext4_dio_write_iter fs/ext4/file.c:438 [inline] ext4_file_write_iter+0xc38/0xd40 fs/ext4/file.c:545 call_write_iter include/linux/fs.h:1902 [inline] new_sync_write+0x388/0x4a0 fs/read_write.c:483 __vfs_write+0xb1/0xc0 fs/read_write.c:496 vfs_write fs/read_write.c:558 [inline] vfs_write+0x18a/0x390 fs/read_write.c:542 ksys_write+0xd5/0x1b0 fs/read_write.c:611 __do_sys_write fs/read_write.c:623 [inline] __se_sys_write fs/read_write.c:620 [inline] __x64_sys_write+0x4c/0x60 fs/read_write.c:620 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 23957 Comm: syz-executor.0 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/02/03 07:41 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 93e5e335 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/18 00:46 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 3de7aabb | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/25 02:44 | https://github.com/google/ktsan.git kcsan | 245a43005292 | be5c2c81 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/21 09:52 | https://github.com/google/ktsan.git kcsan | 245a43005292 | bc586918 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/21 09:48 | https://github.com/google/ktsan.git kcsan | 245a43005292 | bc586918 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/11 04:31 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 101194eb | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/07 22:45 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 1508f453 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/06 09:56 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 98b4ef2d | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/05 20:44 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 9fd5a512 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/28 11:31 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 97264cb1 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/28 01:03 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 0d63f89c | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/23 06:28 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | 598ca6c8 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/21 20:01 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | 8098ea0f | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/17 09:12 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | d5696d51 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/16 13:07 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | cdac920b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/10 22:21 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | dc438b91 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/29 19:27 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | 5ea87a66 | .config | console log | report | ci2-upstream-kcsan-gce |