Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop2: partition table beyond EOD, ================================================================== BUG: KCSAN: data-race in data_push_tail / vsnprintf write to 0xffffffff86db6bbc of 1 bytes by task 5319 on cpu 0: vsnprintf+0xe8f/0xed0 vscnprintf+0x29/0x80 lib/vsprintf.c:2908 printk_sprint kernel/printk/printk.c:2075 [inline] vprintk_store+0x638/0xbb0 kernel/printk/printk.c:2185 vprintk_emit+0xac/0x3c0 kernel/printk/printk.c:2228 vprintk_default+0x22/0x30 kernel/printk/printk.c:2255 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50 _printk+0x76/0x97 kernel/printk/printk.c:2265 disk_unlock_native_capacity block/partitions/core.c:531 [inline] blk_add_partition block/partitions/core.c:575 [inline] blk_add_partitions block/partitions/core.c:653 [inline] bdev_disk_changed+0x90c/0xc20 block/partitions/core.c:695 loop_reread_partitions drivers/block/loop.c:517 [inline] loop_set_status+0x533/0x5d0 drivers/block/loop.c:1306 lo_ioctl+0x835/0x1280 blkdev_ioctl+0x20e/0x440 block/ioctl.c:588 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:860 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffffff86db6bb8 of 8 bytes by task 1439 on cpu 1: data_make_reusable kernel/printk/printk_ringbuffer.c:587 [inline] data_push_tail+0x138/0x470 kernel/printk/printk_ringbuffer.c:672 data_alloc+0xbc/0x2b0 kernel/printk/printk_ringbuffer.c:1043 prb_reserve+0x920/0xbf0 kernel/printk/printk_ringbuffer.c:1549 vprintk_store+0x560/0xbb0 kernel/printk/printk.c:2175 vprintk_emit+0xac/0x3c0 kernel/printk/printk.c:2228 vprintk_default+0x22/0x30 kernel/printk/printk.c:2255 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50 _printk+0x76/0x97 kernel/printk/printk.c:2265 blk_add_partitions block/partitions/core.c:618 [inline] bdev_disk_changed+0x4fe/0xc20 block/partitions/core.c:695 blkdev_get_whole block/bdev.c:684 [inline] blkdev_get_by_dev+0x767/0xcf0 block/bdev.c:818 disk_scan_partitions+0x91/0xc0 block/genhd.c:387 blkdev_common_ioctl+0xca5/0x1060 block/ioctl.c:504 blkdev_ioctl+0x1a7/0x440 block/ioctl.c:582 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:860 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000000100057e59 -> 0x000000000a646564 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 1439 Comm: udevd Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== truncated loop2: p1 < > p2 < > p3 p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p3 start 4227858432 is beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop3: unable to read partition table loop3: partition table beyond EOD, truncated loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop5: unable to read partition table loop5: partition table beyond EOD, truncated loop2: p1 < > p2 < > p3 p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p3 start 4127195136 is beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop2: p1 < > p2 < > p3 p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p3 start 4127195136 is beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop2: p1 < > p2 < > p3 p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p3 start 4261412864 is beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop2: p1 < > p2 < > p3 p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p3 start 4261412864 is beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 50660736 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated loop5: unable to read partition table loop5: partition table beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 50661248 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated blk_print_req_error: 12 callbacks suppressed I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 buffer_io_error: 8 callbacks suppressed Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 50662272 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop5, logical block 0, async page read loop5: unable to read partition table loop5: partition table beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 50665600 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 50665600 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 50692992 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 50692992 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop1, logical block 0, async page read I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop1, logical block 0, async page read loop1: unable to read partition table I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop1, logical block 0, async page read I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop1, logical block 0, async page read loop1: unable to read partition table loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 51052672 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 51052672 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop5: unable to read partition table loop5: partition table beyond EOD, truncated loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop1: unable to read partition table loop1: partition table beyond EOD, truncated loop4: unable to read partition table loop4: partition table beyond EOD, truncated loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop4: p1 < > p2 < > p4 loop4: partition table partially beyond EOD, truncated loop4: p1 start 335762607 is beyond EOD, truncated loop4: p2 size 2 extends beyond EOD, truncated loop4: p4 start 224 is beyond EOD, truncated loop2: p1 < > p2 < > p4 loop2: partition table partially beyond EOD, truncated loop2: p1 start 335762607 is beyond EOD, truncated loop2: p2 size 2 extends beyond EOD, truncated loop2: p4 size 2097152 extends beyond EOD, truncated loop4: p1 < > p2 < > p4 loop4: partition table partially beyond EOD, truncated loop4: p1 start 335762607 is beyond EOD, truncated loop4: p2 size 2 extends beyond EOD, truncated loop4: p4 start 236 is beyond EOD, truncated blk_print_req_error: 5 callbacks suppressed I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 buffer_io_error: 4 callbacks suppressed Buffer I/O error on dev loop1, logical block 0, async page read loop1: unable to read partition table loop1: partition table beyond EOD, truncated I/O error, dev loop4, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop4, logical block 0, async page read loop4: unable to read partition table loop4: partition table beyond EOD, truncated I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop2: partition table beyond EOD, truncated loop5: p1 < > p2 p3 p4 loop5: partition table partially beyond EOD, truncated loop5: p1 start 335762607 is beyond EOD, truncated loop5: p2 size 52756608 extends beyond EOD, truncated loop5: p3 size 4294967040 extends beyond EOD, truncated loop5: p4 size 2097152 extends beyond EOD, truncated loop4: p1 < > p2 < > p4 loop4: partition table partially beyond EOD, truncated loop4: p1 start 335762607 is beyond EOD, truncated loop4: p2 size 2 extends beyond EOD, truncated loop4: p4 start 614 is beyond EOD, truncated loop4: p1 < > p2 < > p4 loop4: partition table partially beyond EOD, truncated loop4: p1 start 335762607 is beyond EOD, truncated loop4: p2 size 2 extends beyond EOD, truncated loop4: p4 start 614 is beyond EOD, truncated I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop2: partition table beyond EOD, truncated I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop2: partition table beyond EOD, truncated I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop0, logical block 0, async page read loop0: unable to read partition table loop0: partition table beyond EOD, truncated I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev loop2, logical block 0, async page read loop2: unable to read partition table loop3: unable to read partition table loop3: partition table beyond EOD, truncated loop5: unable to read partition table loop5: partition table beyond EOD, truncated