Hello, syzbot found the following issue on: HEAD commit: e477dba5442c Merge tag 'for-6.12/dm-changes' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14a8fa80580000 kernel config: https://syzkaller.appspot.com/x/.config?x=b2d4fdf18a83ec0b dashboard link: https://syzkaller.appspot.com/bug?extid=7614fef79a88d3c02bf2 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=101386a9980000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-e477dba5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3bf119f19bb7/vmlinux-e477dba5.xz kernel image: https://storage.googleapis.com/syzbot-assets/2de4db7684f9/bzImage-e477dba5.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/184157d9745b/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7614fef79a88d3c02bf2@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 256 exFAT-fs (loop0): failed to load upcase table (idx : 0x000104d0, chksum : 0x60d18cac, utbl_chksum : 0xe619d30d) Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: _raw_spin_unlock_irqrestore+0x137/0x140 CPU: 0 UID: 0 PID: 7456 Comm: syz.0.1047 Not tainted 6.11.0-syzkaller-11624-ge477dba5442c #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 panic+0x349/0x880 kernel/panic.c:354 __stack_chk_fail+0x15/0x20 kernel/panic.c:836 _raw_spin_unlock_irqrestore+0x137/0x140 debug_object_activate+0x3e4/0x510 lib/debugobjects.c:726 debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline] __call_rcu_common kernel/rcu/tree.c:3071 [inline] call_rcu+0x97/0xa70 kernel/rcu/tree.c:3190 slab_free_hook mm/slub.c:2307 [inline] slab_free mm/slub.c:4580 [inline] kmem_cache_free+0x2fc/0x420 mm/slub.c:4682 anon_vma_free mm/rmap.c:138 [inline] __put_anon_vma+0x128/0x2d0 mm/rmap.c:2560 put_anon_vma include/linux/rmap.h:116 [inline] unlink_anon_vmas+0x492/0x5f0 mm/rmap.c:445 free_pgtables+0x567/0x840 mm/memory.c:409 exit_mmap+0x48e/0xc40 mm/mmap.c:1875 __mmput+0x115/0x390 kernel/fork.c:1347 exit_mm+0x220/0x310 kernel/exit.c:571 do_exit+0x9b2/0x28e0 kernel/exit.c:926 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 get_signal+0x16a3/0x1740 kernel/signal.c:2917 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fed97b7df39 Code: Unable to access opcode bytes at 0x7fed97b7df0f. RSP: 002b:00007fed975ff0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007fed97d35f88 RCX: 00007fed97b7df39 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fed97d35f8c RBP: 00007fed97d35f80 R08: 7fffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fed97d35f8c R13: 0000000000000000 R14: 00007fff93524ba0 R15: 00007fff93524c88 </TASK> Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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
