sd 0:0:1:0: [sg0] tag#7921 CDB[20]: ba
==================================================================
BUG: KCSAN: data-race in console_unlock / console_unlock

write to 0xffffffff84180940 of 8 bytes by task 18267 on cpu 1:
 console_unlock+0x570/0xb30 kernel/printk/printk.c:2632
 vprintk_emit+0x125/0x3d0 kernel/printk/printk.c:2174
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2185
 vprintk+0x15a/0x170 kernel/printk/printk_safe.c:392
 printk+0x62/0x87 kernel/printk/printk.c:2216
 show_ip arch/x86/kernel/dumpstack.c:148 [inline]
 show_iret_regs+0x24/0x60 arch/x86/kernel/dumpstack.c:155
 __show_regs+0x1e/0x330 arch/x86/kernel/process_64.c:74
 show_regs_if_on_stack arch/x86/kernel/dumpstack.c:173 [inline]
 show_trace_log_lvl+0x548/0x600 arch/x86/kernel/dumpstack.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xb7/0x103 lib/dump_stack.c:105
 dump_stack+0x11/0x1a lib/dump_stack.c:112
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail+0x23c/0x250 lib/fault-inject.c:146
 __should_failslab+0x81/0x90 mm/failslab.c:33
 should_failslab+0x5/0x20 mm/slab_common.c:1326
 slab_pre_alloc_hook mm/slab.h:494 [inline]
 slab_alloc mm/slab.c:3306 [inline]
 kmem_cache_alloc_trace+0x49/0x310 mm/slab.c:3573
 kmalloc include/linux/slab.h:591 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 bpf_prog_alloc_no_stats+0x9a/0x200 kernel/bpf/core.c:91
 bpf_prog_alloc+0x16/0xe0 kernel/bpf/core.c:121
 bpf_prog_create_from_user+0x6f/0x240 net/core/filter.c:1413
 seccomp_prepare_filter kernel/seccomp.c:666 [inline]
 seccomp_prepare_user_filter kernel/seccomp.c:703 [inline]
 seccomp_set_mode_filter kernel/seccomp.c:1852 [inline]
 do_seccomp+0x5b4/0x1550 kernel/seccomp.c:1972
 __do_sys_seccomp kernel/seccomp.c:1991 [inline]
 __se_sys_seccomp kernel/seccomp.c:1988 [inline]
 __x64_sys_seccomp+0x3c/0x50 kernel/seccomp.c:1988
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffffff84180940 of 8 bytes by task 18275 on cpu 0:
 console_unlock+0x9f5/0xb30 kernel/printk/printk.c:2667
 vcs_read+0xa00/0xa40 drivers/tty/vt/vc_screen.c:473
 do_loop_readv_writev fs/read_write.c:750 [inline]
 do_iter_read+0x370/0x5d0 fs/read_write.c:792
 vfs_readv fs/read_write.c:910 [inline]
 do_preadv+0x13b/0x230 fs/read_write.c:1002
 __do_sys_preadv fs/read_write.c:1052 [inline]
 __se_sys_preadv fs/read_write.c:1047 [inline]
 __x64_sys_preadv+0x54/0x60 fs/read_write.c:1047
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000000000023b9 -> 0x00000000000023ba

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 18275 Comm: syz-executor.1 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
sd 0:0:1:0: [sg0] tag#7922 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#7922 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#7922 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#7922 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#7922 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#7923 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#7923 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#7923 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#7923 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#7923 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#7924 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#7924 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#7924 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#7924 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#7924 CDB[20]: ba