loop3: p143 start 4177526784 is beyond EOD, truncated ================================================================== BUG: KCSAN: data-race in data_push_tail / number write to 0xffffffff88b47ae5 of 1 bytes by task 6208 on cpu 1: number+0x7d0/0xa90 lib/vsprintf.c:564 vsnprintf+0xa44/0xe30 lib/vsprintf.c:2890 vscnprintf+0x42/0x90 lib/vsprintf.c:2930 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2165 vprintk_store+0x570/0x810 kernel/printk/printk.c:2279 vprintk_emit+0x13a/0x610 kernel/printk/printk.c:2329 vprintk_default+0x26/0x30 kernel/printk/printk.c:2363 vprintk+0x75/0x80 kernel/printk/printk_safe.c:45 _printk+0x7a/0xa0 kernel/printk/printk.c:2373 dump_stack_print_info+0xdf/0x1a0 lib/dump_stack.c:57 __dump_stack lib/dump_stack.c:92 [inline] dump_stack_lvl+0xe6/0x150 lib/dump_stack.c:119 dump_stack+0x15/0x20 lib/dump_stack.c:128 fail_dump lib/fault-inject.c:52 [inline] should_fail_ex+0x229/0x230 lib/fault-inject.c:153 should_failslab+0x8f/0xb0 mm/failslab.c:45 slab_pre_alloc_hook mm/slub.c:3941 [inline] slab_alloc_node mm/slub.c:4017 [inline] kmem_cache_alloc_node_noprof+0x51/0x2b0 mm/slub.c:4080 __alloc_skb+0x10b/0x310 net/core/skbuff.c:664 alloc_skb include/linux/skbuff.h:1320 [inline] netlink_alloc_large_skb+0xad/0xe0 net/netlink/af_netlink.c:1206 netlink_sendmsg+0x3b4/0x6e0 net/netlink/af_netlink.c:1876 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:745 ____sys_sendmsg+0x312/0x410 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x1e9/0x280 net/socket.c:2680 __do_sys_sendmsg net/socket.c:2689 [inline] __se_sys_sendmsg net/socket.c:2687 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2687 x64_sys_call+0x2689/0x2d60 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 0xffffffff88b47ae0 of 8 bytes by task 6157 on cpu 0: data_make_reusable kernel/printk/printk_ringbuffer.c:594 [inline] data_push_tail+0x102/0x430 kernel/printk/printk_ringbuffer.c:679 data_alloc+0xbe/0x2c0 kernel/printk/printk_ringbuffer.c:1054 prb_reserve+0x85e/0xb60 kernel/printk/printk_ringbuffer.c:1669 vprintk_store+0x53f/0x810 kernel/printk/printk.c:2269 vprintk_emit+0x13a/0x610 kernel/printk/printk.c:2329 vprintk_default+0x26/0x30 kernel/printk/printk.c:2363 vprintk+0x75/0x80 kernel/printk/printk_safe.c:45 _printk+0x7a/0xa0 kernel/printk/printk.c:2373 disk_unlock_native_capacity block/partitions/core.c:512 [inline] blk_add_partition block/partitions/core.c:535 [inline] blk_add_partitions block/partitions/core.c:623 [inline] bdev_disk_changed+0x969/0xbb0 block/partitions/core.c:683 loop_reread_partitions drivers/block/loop.c:534 [inline] loop_set_status+0x4ab/0x550 drivers/block/loop.c:1303 lo_ioctl+0x7fd/0x11d0 blkdev_ioctl+0x35f/0x450 block/ioctl.c:676 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xd3/0x150 fs/ioctl.c:893 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893 x64_sys_call+0x15cc/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:17 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: 0x00000000ffffee11 -> 0x000000203a555043 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 6157 Comm: syz.3.760 Not tainted 6.11.0-rc5-syzkaller-00057-g86987d84b968 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ================================================================== loop3: p144 start 8388612 is beyond EOD, truncated loop3: p145 size 32937 extends beyond EOD, truncated loop3: p146 start 4177526784 is beyond EOD, truncated loop3: p147 start 8388612 is beyond EOD, truncated loop3: p148 size 32937 extends beyond EOD, truncated loop3: p149 start 4177526784 is beyond EOD, truncated loop3: p150 start 8388612 is beyond EOD, truncated loop3: p151 size 32937 extends beyond EOD, truncated loop3: p152 start 4177526784 is beyond EOD, truncated loop3: p153 start 8388612 is beyond EOD, truncated loop3: p154 size 32937 extends beyond EOD, truncated loop3: p155 start 4177526784 is beyond EOD, truncated loop3: p156 start 8388612 is beyond EOD, truncated loop3: p157 size 32937 extends beyond EOD, truncated loop3: p158 start 4177526784 is beyond EOD, truncated loop3: p159 start 8388612 is beyond EOD, truncated loop3: p160 size 32937 extends beyond EOD, truncated loop3: p161 start 4177526784 is beyond EOD, truncated loop3: p162 start 8388612 is beyond EOD, truncated loop3: p163 size 32937 extends beyond EOD, truncated loop3: p164 start 4177526784 is beyond EOD, truncated loop3: p165 start 8388612 is beyond EOD, truncated loop3: p166 size 32937 extends beyond EOD, truncated loop3: p167 start 4177526784 is beyond EOD, truncated loop3: p168 start 8388612 is beyond EOD, truncated loop3: p169 size 32937 extends beyond EOD, truncated loop3: p170 start 4177526784 is beyond EOD, truncated loop3: p171 start 8388612 is beyond EOD, truncated loop3: p172 size 32937 extends beyond EOD, truncated loop3: p173 start 4177526784 is beyond EOD, truncated loop3: p174 start 8388612 is beyond EOD, truncated loop3: p175 size 32937 extends beyond EOD, truncated loop3: p176 start 4177526784 is beyond EOD, truncated loop3: p177 start 8388612 is beyond EOD, truncated loop3: p178 size 32937 extends beyond EOD, truncated loop3: p179 start 4177526784 is beyond EOD, truncated loop3: p180 start 8388612 is beyond EOD, truncated loop3: p181 size 32937 extends beyond EOD, truncated loop3: p182 start 4177526784 is beyond EOD, truncated loop3: p183 start 8388612 is beyond EOD, truncated loop3: p184 size 32937 extends beyond EOD, truncated loop3: p185 start 4177526784 is beyond EOD, truncated loop3: p186 start 8388612 is beyond EOD, truncated loop3: p187 size 32937 extends beyond EOD, truncated loop3: p188 start 4177526784 is beyond EOD, truncated loop3: p189 start 8388612 is beyond EOD, truncated loop3: p190 size 32937 extends beyond EOD, truncated loop3: p191 start 4177526784 is beyond EOD, truncated loop3: p192 start 8388612 is beyond EOD, truncated loop3: p193 size 32937 extends beyond EOD, truncated loop3: p194 start 4177526784 is beyond EOD, truncated loop3: p195 start 8388612 is beyond EOD, truncated loop3: p196 size 32937 extends beyond EOD, truncated loop3: p197 start 4177526784 is beyond EOD, truncated loop3: p198 start 8388612 is beyond EOD, truncated loop3: p199 size 32937 extends beyond EOD, truncated loop3: p200 start 4177526784 is beyond EOD, truncated loop3: p201 start 8388612 is beyond EOD, truncated loop3: p202 size 32937 extends beyond EOD, truncated loop3: p203 start 4177526784 is beyond EOD, truncated loop3: p204 start 8388612 is beyond EOD, truncated loop3: p205 size 32937 extends beyond EOD, truncated loop3: p206 start 4177526784 is beyond EOD, truncated loop3: p207 start 8388612 is beyond EOD, truncated loop3: p208 size 32937 extends beyond EOD, truncated loop3: p209 start 4177526784 is beyond EOD, truncated loop3: p210 start 8388612 is beyond EOD, truncated loop3: p211 size 32937 extends beyond EOD, truncated loop3: p212 start 4177526784 is beyond EOD, truncated loop3: p213 start 8388612 is beyond EOD, truncated loop3: p214 size 32937 extends beyond EOD, truncated loop3: p215 start 4177526784 is beyond EOD, truncated loop3: p216 start 8388612 is beyond EOD, truncated loop3: p217 size 32937 extends beyond EOD, truncated loop3: p218 start 4177526784 is beyond EOD, truncated loop3: p219 start 8388612 is beyond EOD, truncated loop3: p220 size 32937 extends beyond EOD, truncated loop3: p221 start 4177526784 is beyond EOD, truncated loop3: p222 start 8388612 is beyond EOD, truncated loop3: p223 size 32937 extends beyond EOD, truncated loop3: p224 start 4177526784 is beyond EOD, truncated loop3: p225 start 8388612 is beyond EOD, truncated loop3: p226 size 32937 extends beyond EOD, truncated loop3: p227 start 4177526784 is beyond EOD, truncated loop3: p228 start 8388612 is beyond EOD, truncated loop3: p229 size 32937 extends beyond EOD, truncated loop3: p230 start 4177526784 is beyond EOD, truncated loop3: p231 start 8388612 is beyond EOD, truncated loop3: p232 size 32937 extends beyond EOD, truncated loop3: p233 start 4177526784 is beyond EOD, truncated loop3: p234 start 8388612 is beyond EOD, truncated loop3: p235 size 32937 extends beyond EOD, truncated loop3: p236 start 4177526784 is beyond EOD, truncated loop3: p237 start 8388612 is beyond EOD, truncated loop3: p238 size 32937 extends beyond EOD, truncated loop3: p239 start 4177526784 is beyond EOD, truncated loop3: p240 start 8388612 is beyond EOD, truncated loop3: p241 size 32937 extends beyond EOD, truncated loop3: p242 start 4177526784 is beyond EOD, truncated loop3: p243 start 8388612 is beyond EOD, truncated loop3: p244 size 32937 extends beyond EOD, truncated loop3: p245 start 4177526784 is beyond EOD, truncated loop3: p246 start 8388612 is beyond EOD, truncated loop3: p247 size 32937 extends beyond EOD, truncated loop3: p248 start 4177526784 is beyond EOD, truncated loop3: p249 start 8388612 is beyond EOD, truncated loop3: p250 size 32937 extends beyond EOD, truncated loop3: p251 start 4177526784 is beyond EOD, truncated loop3: p252 start 8388612 is beyond EOD, truncated loop3: p253 size 32937 extends beyond EOD, truncated loop3: p254 start 4177526784 is beyond EOD, truncated loop3: p255 start 8388612 is beyond EOD, truncated