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AKwUvBy62ujUxbILIQInktLiAT/Sycd/OYWX0n9vBgw56eSo3mzB0vSmjR17mIpiEHH//zZzRSkApbpLsA==@lists.linux.dev X-Gm-Message-State: AFuF++lma98bngaFzCM9Bw1UKPeiBJullciFVi5KL0Bk43oPF+jn35/N nXvIJlVtSQzTOLlh5ptc7tlDSaLErQDSbN3x7+qjM2xwfhiW5sO3a6lXG/U4VCnN0L1IyBl0ZFJ yLMYZ9nVjxbGmBg8HwXVgvYkVet5u7hN4/r82u8Afmu29qvBNkC4qtdqatWM= Precedence: bulk X-Mailing-List: dm-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:4497:b0:4b9:a88b:8891 with SMTP id 5614622812f47-4f1b6b72f31mr1415333b6e.39.1790778343909; Wed, 30 Sep 2026 07:25:43 -0700 (PDT) Date: Wed, 30 Sep 2026 07:25:43 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6abd1be7.fac9d4e5.17396.0005.GAE@google.com> Subject: [syzbot] [dm?] KASAN: wild-memory-access Write in __journal_read_write From: syzbot To: agk@redhat.com, bmarzins@redhat.com, dm-devel@lists.linux.dev, linux-kernel@vger.kernel.org, mpatocka@redhat.com, snitzer@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 551c722f4080 Merge tag 'rtc-7.3-fixes' of git://git.kernel.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=1111c6c9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d012d9c67977ee4 dashboard link: https://syzkaller.appspot.com/bug?extid=675c91651049ad042c5f compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=171b0035580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+675c91651049ad042c5f@syzkaller.appspotmail.com ================================================================== BUG: KASAN: wild-memory-access in __journal_read_write+0xc29/0x1f10 drivers/md/dm-integrity.c:2288 Write of size 512 at addr 0005088000000000 by task syz-executor338/6039 CPU: 0 UID: 0 PID: 6039 Comm: syz-executor338 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:186 [inline] kasan_check_range+0x10f/0x1e0 mm/kasan/generic.c:200 __asan_memcpy+0x3c/0x60 mm/kasan/shadow.c:106 __journal_read_write+0xc29/0x1f10 drivers/md/dm-integrity.c:2288 dm_integrity_map_continue+0x243f/0x33b0 drivers/md/dm-integrity.c:2574 dm_integrity_map+0x6cc/0xc90 drivers/md/dm-integrity.c:2204 __map_bio+0x597/0x660 drivers/md/dm.c:1435 __split_and_process_bio drivers/md/dm.c:1769 [inline] dm_split_and_process_bio drivers/md/dm.c:2043 [inline] dm_submit_bio+0x5b6/0x2950 drivers/md/dm.c:2099 __submit_bio block/blk-core.c:681 [inline] __submit_bio+0x20e/0x3d0 block/blk-core.c:670 __submit_bio_noacct block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x736/0xc00 block/blk-core.c:792 submit_bio_noacct+0xc93/0x2130 block/blk-core.c:925 bio_await+0x1fa/0x240 block/bio.c:1581 submit_bio_wait+0x19/0x60 block/bio.c:1599 __blkdev_direct_IO_simple+0x4cb/0x8c0 block/fops.c:98 blkdev_direct_IO+0xbee/0x2030 block/fops.c:429 blkdev_direct_write block/fops.c:699 [inline] blkdev_write_iter+0x703/0xd30 block/fops.c:767 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x6af/0x1050 fs/read_write.c:687 ksys_pwrite64 fs/read_write.c:794 [inline] __do_sys_pwrite64 fs/read_write.c:802 [inline] __se_sys_pwrite64 fs/read_write.c:799 [inline] __x64_sys_pwrite64+0x1eb/0x250 fs/read_write.c:799 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5408351ab7 Code: 48 89 fa 4c 89 df e8 98 1d 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffc07ac8820 EFLAGS: 00000202 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 0000555592860400 RCX: 00007f5408351ab7 RDX: 0000000000000400 RSI: 0000555592863000 RDI: 0000000000000007 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00005555928627a0 R13: 0000000000000007 R14: 0000555592863000 R15: 00000000c138fd06 ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup