Hello, Found kernel issue about dm-mod blkg_destroy, please have a look if need more info. kernel repo : https://github.com/torvalds/linux.git kernel : 6.2.0.kasan just found it once and not sure the reproducer OK ] Reached target System Reboot . [ 3810.010126] systemd-shutdown[1]: Waiting for process: 119574 (bash), 119566 (rhts-reboot), 119584 (sleep), 119578 (sleep), 119575 (tee) [-- MARK -- Mon Feb 27 10:25:00 2023] [ 3890.110979] ================================================================== [ 3890.118206] BUG: KASAN: slab-use-after-free in blkg_destroy+0x34b/0x380 [ 3890.124825] Read of size 8 at addr ff11000131856820 by task systemd-shutdow/1 [ 3890.131959] [ 3890.133456] CPU: 8 PID: 1 Comm: systemd-shutdow Kdump: loaded Not tainted 6.2.0.kasan+ #1 [ 3890.141628] Hardware name: Intel Corporation WHITLEY/WHITLEY, BIOS WLYDCRB1.SYS.0020.P21.2012150710 12/15/2020 [ 3890.151613] Call Trace: [ 3890.154065] <TASK> [ 3890.156172] dump_stack_lvl+0x33/0x50 [ 3890.159846] print_address_description.constprop.0+0x2c/0x3e0 [ 3890.165600] print_report+0xb5/0x270 [ 3890.169176] ? kasan_addr_to_slab+0x9/0xa0 [ 3890.173276] ? blkg_destroy+0x34b/0x380 [ 3890.177117] kasan_report+0xcf/0x100 [ 3890.180693] ? blkg_destroy+0x34b/0x380 [ 3890.184525] blkg_destroy+0x34b/0x380 [ 3890.188190] ? percpu_ref_kill_and_confirm+0xa7/0x250 [ 3890.193244] blkg_destroy_all.isra.0+0x101/0x1f0 [ 3890.197863] blkcg_exit_disk+0x2f/0x70 [ 3890.201615] disk_release+0x110/0x3f0 [ 3890.205281] device_release+0x98/0x210 [ 3890.209042] kobject_cleanup+0x101/0x360 [ 3890.212975] cleanup_mapped_device+0x255/0x490 [dm_mod] [ 3890.218219] __dm_destroy+0x316/0x550 [dm_mod] [ 3890.222680] dev_remove+0x230/0x300 [dm_mod] [ 3890.226970] ctl_ioctl+0x4e8/0x790 [dm_mod] [ 3890.231166] ? __pfx_ctl_ioctl+0x10/0x10 [dm_mod] [ 3890.235888] ? kasan_save_stack+0x2e/0x40 [ 3890.239901] ? kasan_save_stack+0x1e/0x40 [ 3890.243911] ? task_work_add+0x73/0x210 [ 3890.247751] ? filp_close+0xf3/0x150 [ 3890.251330] ? __x64_sys_close+0x2c/0x70 [ 3890.255254] ? do_syscall_64+0x59/0x90 [ 3890.259009] ? __pfx___wait_for_common+0x10/0x10 [ 3890.263630] ? rseq_get_rseq_cs+0x6a/0x660 [ 3890.267733] ? __fget_light+0x57/0x510 [ 3890.271489] dm_ctl_ioctl+0xa/0x20 [dm_mod] [ 3890.275689] __x64_sys_ioctl+0x128/0x1a0 [ 3890.279617] do_syscall_64+0x59/0x90 [ 3890.283196] ? _raw_spin_lock+0x81/0xe0 [ 3890.287035] ? __rseq_handle_notify_resume+0x64/0xd0 [ 3890.291999] ? exit_to_user_mode_loop+0xd0/0x130 [ 3890.296617] ? exit_to_user_mode_prepare+0xb6/0x100 [ 3890.301498] ? syscall_exit_to_user_mode+0x12/0x30 [ 3890.306290] ? do_syscall_64+0x69/0x90 [ 3890.310042] ? do_syscall_64+0x69/0x90 [ 3890.313796] entry_SYSCALL_64_after_hwframe+0x72/0xdc [ 3890.318848] RIP: 0033:0x7fb97303ec6b -- -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
