Hello, syzbot found the following issue on: HEAD commit: 596764183be8 Add linux-next specific files for 20240129 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=12643c47e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=584144ad19f381aa dashboard link: https://syzkaller.appspot.com/bug?extid=a4c1a7875b2babd9e359 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17ed937fe80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17805467e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/b647c038857b/disk-59676418.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/729e26c3ac55/vmlinux-59676418.xz kernel image: https://storage.googleapis.com/syzbot-assets/15aa5e287059/bzImage-59676418.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a4c1a7875b2babd9e359@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KASAN: wild-memory-access in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: wild-memory-access in test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline] BUG: KASAN: wild-memory-access in __fscache_relinquish_cookie+0x2a/0x620 fs/netfs/fscache_cookie.c:977 Write of size 8 at addr adacafaea9a8ac9a by task syz-executor410/9304 CPU: 0 PID: 9304 Comm: syz-executor410 Not tainted 6.8.0-rc1-next-20240129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 kasan_report+0xd9/0x110 mm/kasan/report.c:601 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline] __fscache_relinquish_cookie+0x2a/0x620 fs/netfs/fscache_cookie.c:977 fscache_relinquish_cookie include/linux/fscache.h:308 [inline] v9fs_evict_inode+0x102/0x150 fs/9p/vfs_inode.c:356 evict+0x2ed/0x6c0 fs/inode.c:666 iput_final fs/inode.c:1740 [inline] iput.part.0+0x573/0x7c0 fs/inode.c:1766 iput+0x5c/0x80 fs/inode.c:1756 v9fs_fid_iget_dotl+0x1b4/0x260 fs/9p/vfs_inode_dotl.c:96 v9fs_get_inode_from_fid fs/9p/v9fs.h:230 [inline] v9fs_mount+0x515/0xa90 fs/9p/vfs_super.c:142 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8f/0x380 fs/super.c:1784 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x14e6/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __x64_sys_mount+0x297/0x320 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f0b9d2fb899 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe6ee450d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f0b9d2fb899 RDX: 00000000200001c0 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000020000300 R09: 00007f0b9d200990 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe6ee450fc R13: 00007ffe6ee45130 R14: 00007ffe6ee45110 R15: 0000000000001086 </TASK> ================================================================== --- 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@xxxxxxxxxxxxxxxx. 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
