program syz-executor.1 is using a deprecated SCSI ioctl, please convert it to SG_IO
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BUG: KCSAN: data-race in relay_switch_subbuf / relay_switch_subbuf

write to 0xffff888138425638 of 8 bytes by interrupt on cpu 1:
 relay_switch_subbuf+0x399/0x3a0 kernel/relay.c:708
 relay_reserve include/linux/relay.h:248 [inline]
 trace_note+0x34e/0x3d0 kernel/trace/blktrace.c:95
 trace_note_tsk+0x9c/0xe0 kernel/trace/blktrace.c:126
 __blk_add_trace+0x649/0x720 kernel/trace/blktrace.c:268
 blk_add_trace_rq kernel/trace/blktrace.c:844 [inline]
 blk_add_trace_rq_complete+0x1b3/0x1c0 kernel/trace/blktrace.c:876
 trace_block_rq_complete include/trace/events/block.h:149 [inline]
 blk_update_request+0x8fa/0x950 block/blk-mq.c:891
 scsi_end_request+0x52/0x4e0 drivers/scsi/scsi_lib.c:537
 scsi_io_completion+0x9f/0x200 drivers/scsi/scsi_lib.c:974
 scsi_finish_command+0x1bb/0x1d0 drivers/scsi/scsi.c:198
 scsi_complete+0x19a/0x1d0 drivers/scsi/scsi_lib.c:1438
 blk_complete_reqs block/blk-mq.c:1131 [inline]
 blk_done_softirq+0x73/0xa0 block/blk-mq.c:1136
 __do_softirq+0xc1/0x265 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0x3b/0x90 kernel/softirq.c:644
 common_interrupt+0x7f/0x90 arch/x86/kernel/irq.c:247
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636
 crng_make_state+0x1c6/0x3d0
 _get_random_bytes+0x88/0x190 drivers/char/random.c:385
 get_random_bytes+0x1d/0x30 drivers/char/random.c:417
 eth_random_addr include/linux/etherdevice.h:232 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:756 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
 nsim_dev_trap_report_work+0x224/0x5a0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2703
 worker_thread+0x525/0x730 kernel/workqueue.c:2784
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

write to 0xffff888138425638 of 8 bytes by task 19259 on cpu 0:
 relay_switch_subbuf+0x399/0x3a0 kernel/relay.c:708
 relay_reserve include/linux/relay.h:248 [inline]
 __blk_add_trace+0x665/0x720 kernel/trace/blktrace.c:276
 blk_add_trace_rq kernel/trace/blktrace.c:844 [inline]
 blk_add_trace_rq_issue+0x1b6/0x1c0 kernel/trace/blktrace.c:857
 trace_block_rq_issue include/trace/events/block.h:229 [inline]
 blk_mq_start_request+0x215/0x270 block/blk-mq.c:1249
 scsi_queue_rq+0x14cc/0x1a30 drivers/scsi/scsi_lib.c:1758
 blk_mq_dispatch_rq_list+0x7b1/0x11f0 block/blk-mq.c:2049
 __blk_mq_sched_dispatch_requests+0x1d4/0xdd0 block/blk-mq-sched.c:301
 blk_mq_sched_dispatch_requests+0x99/0x100 block/blk-mq-sched.c:333
 blk_mq_run_hw_queue+0x2a4/0x4c0 block/blk-mq.c:2264
 blk_execute_rq+0x13a/0x3d0 block/blk-mq.c:1404
 sg_scsi_ioctl drivers/scsi/scsi_ioctl.c:593 [inline]
 scsi_ioctl+0x13eb/0x1520 drivers/scsi/scsi_ioctl.c:901
 sg_ioctl_common drivers/scsi/sg.c:1106 [inline]
 sg_ioctl+0xda6/0x1870 drivers/scsi/sg.c:1160
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xcf/0x140 fs/ioctl.c:857
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x0000000000000040 -> 0x0000000000000030

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 19259 Comm: syz-executor.1 Not tainted 6.6.0-rc3-syzkaller-00165-g3b517966c561 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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