================================================================== BUG: KCSAN: data-race in sg_ioctl / sg_rq_end_io write to 0xffff88813bfae11c of 4 bytes by interrupt on cpu 1: sg_rq_end_io+0x154/0x700 drivers/scsi/sg.c:1347 __blk_mq_end_request+0x308/0x390 block/blk-mq.c:1044 scsi_end_request+0x2ab/0x4f0 drivers/scsi/scsi_lib.c:666 scsi_io_completion+0x9f/0x200 drivers/scsi/scsi_lib.c:1069 scsi_finish_command+0x1be/0x1d0 drivers/scsi/scsi.c:198 scsi_complete+0x19a/0x1d0 drivers/scsi/scsi_lib.c:1531 blk_complete_reqs block/blk-mq.c:1129 [inline] blk_done_softirq+0x74/0xb0 block/blk-mq.c:1134 __do_softirq+0xc8/0x285 kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:633 [inline] irq_exit_rcu+0x3c/0x90 kernel/softirq.c:645 common_interrupt+0x81/0x90 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 check_access kernel/kcsan/core.c:787 [inline] __tsan_read4+0x11e/0x180 kernel/kcsan/core.c:1024 crc32_body lib/crc32.c:106 [inline] crc32_le_generic lib/crc32.c:179 [inline] __crc32c_le_base+0xa3/0x520 lib/crc32.c:201 chksum_update+0x32/0x50 crypto/crc32c_generic.c:88 crypto_shash_update+0x4a/0x60 crypto/shash.c:70 jbd2_chksum include/linux/jbd2.h:1801 [inline] jbd2_block_tag_csum_set fs/jbd2/commit.c:334 [inline] jbd2_journal_commit_transaction+0x1238/0x33d0 fs/jbd2/commit.c:684 kjournald2+0x243/0x430 fs/jbd2/journal.c:201 kthread+0x1d1/0x210 kernel/kthread.c:388 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 read to 0xffff88813bfae11c of 4 bytes by task 27766 on cpu 0: sg_fill_request_table drivers/scsi/sg.c:878 [inline] sg_ioctl_common drivers/scsi/sg.c:1086 [inline] sg_ioctl+0x96b/0x1870 drivers/scsi/sg.c:1160 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0xd3/0x150 fs/ioctl.c:890 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:890 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x72/0x7a value changed: 0x0018e548 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 27766 Comm: syz-executor.2 Tainted: G W 6.9.0-rc2-syzkaller-00435-g9fe30842a90b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ==================================================================