==================================================================
BUG: KCSAN: data-race in console_flush_all / console_flush_all

write to 0xffffffff8681a0d8 of 8 bytes by task 5603 on cpu 1:
 console_emit_next_record kernel/printk/printk.c:3083 [inline]
 console_flush_all+0x395/0x770 kernel/printk/printk.c:3210
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xab/0x330 kernel/printk/printk.c:3309
 vprintk_emit+0x3f4/0x680 kernel/printk/printk.c:2432
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447
 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86
 _printk+0x7a/0xa0 kernel/printk/printk.c:2457
 __show_regs+0x86/0x450 arch/x86/kernel/process_64.c:83
 show_trace_log_lvl+0x348/0x400 arch/x86/kernel/dumpstack.c:301
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xf2/0x150 lib/dump_stack.c:120
 dump_stack+0x15/0x1a lib/dump_stack.c:129
 fail_dump lib/fault-inject.c:53 [inline]
 should_fail_ex+0x223/0x230 lib/fault-inject.c:154
 should_fail+0xb/0x10 lib/fault-inject.c:164
 should_fail_usercopy+0x1a/0x20 lib/fault-inject-usercopy.c:37
 copy_from_user_iter lib/iov_iter.c:50 [inline]
 iterate_ubuf include/linux/iov_iter.h:30 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:300 [inline]
 iterate_and_advance include/linux/iov_iter.h:328 [inline]
 __copy_from_iter lib/iov_iter.c:249 [inline]
 _copy_from_iter+0xd5/0xd00 lib/iov_iter.c:260
 copy_from_iter include/linux/uio.h:219 [inline]
 copy_from_iter_full include/linux/uio.h:236 [inline]
 memcpy_from_msg include/linux/skbuff.h:4167 [inline]
 netlink_sendmsg+0x460/0x6e0 net/netlink/af_netlink.c:1876
 sock_sendmsg_nosec net/socket.c:711 [inline]
 __sock_sendmsg+0x140/0x180 net/socket.c:726
 ____sys_sendmsg+0x312/0x410 net/socket.c:2583
 ___sys_sendmsg net/socket.c:2637 [inline]
 __sys_sendmsg+0x19d/0x230 net/socket.c:2669
 __do_sys_sendmsg net/socket.c:2674 [inline]
 __se_sys_sendmsg net/socket.c:2672 [inline]
 __x64_sys_sendmsg+0x46/0x50 net/socket.c:2672
 x64_sys_call+0x2734/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff8681a0d8 of 8 bytes by task 5614 on cpu 0:
 console_flush_all+0x57e/0x770 kernel/printk/printk.c:3211
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xab/0x330 kernel/printk/printk.c:3309
 vprintk_emit+0x3f4/0x680 kernel/printk/printk.c:2432
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447
 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86
 _printk+0x7a/0xa0 kernel/printk/printk.c:2457
 isofs_read_inode fs/isofs/inode.c:1377 [inline]
 __isofs_iget+0xed4/0xf80 fs/isofs/inode.c:1509
 isofs_iget fs/isofs/isofs.h:133 [inline]
 isofs_get_blocks+0x18c/0x4a0 fs/isofs/inode.c:1064
 isofs_get_block fs/isofs/inode.c:1117 [inline]
 isofs_bmap fs/isofs/inode.c:1128 [inline]
 isofs_bread+0x5b/0x100 fs/isofs/inode.c:1136
 isofs_find_entry fs/isofs/namei.c:59 [inline]
 isofs_lookup+0x189/0x8c0 fs/isofs/namei.c:165
 lookup_open fs/namei.c:3627 [inline]
 open_last_lookups fs/namei.c:3748 [inline]
 path_openat+0xd40/0x1fa0 fs/namei.c:3984
 do_filp_open+0x107/0x230 fs/namei.c:4014
 do_sys_openat2+0xab/0x120 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_sys_openat fs/open.c:1433 [inline]
 __se_sys_openat fs/open.c:1428 [inline]
 __x64_sys_openat+0xf3/0x120 fs/open.c:1428
 x64_sys_call+0x2b30/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000000000013a9 -> 0x00000000000013aa

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 5614 Comm: syz.4.753 Not tainted 6.13.0-rc7-syzkaller-00102-gce69b4019001 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
==================================================================
rock: directory entry would overflow storage
rock: sig=0x4f50, size=4, remaining=3
iso9660: Corrupted directory entry in block 6 of inode 1792