T4422]  ? kvasprintf_const+0xdd/0x240
[   81.055121][ T4422]  kobject_set_name_vargs+0x5d/0x110
[   81.055140][ T4422]  kobject_add+0x11e/0x230
[   81.055160][ T4422]  ? kobject_init+0x1c0/0x1c0
[   81.075784][ T4294] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   81.077133][ T4422]  ? kobject_init+0x1c0/0x1c0
[   81.080058][ T4294] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   81.084708][ T4422]  ? dev_uevent_filter+0x3f/0xb0
[   81.084732][ T4422]  blk_mq_register_hctx+0x1d5/0x400
[   81.084754][ T4422]  __blk_mq_register_dev+0x206/0x640
[   81.084774][ T4422]  ? debugfs_create_dir+0x423/0x4c0
[   81.110904][ T4294] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   81.113232][ T4422]  blk_register_queue+0x1fc/0x3a0
[   81.113263][ T4422]  device_add_disk+0x60f/0xde0
[   81.223628][ T4422]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   81.228903][ T4422]  mtdblock_add_mtd+0x186/0x240
[   81.233733][ T4422]  blktrans_notify_add+0x95/0xe0
[   81.238649][ T4422]  add_mtd_device+0xd40/0x1260
[   81.243398][ T4422]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   81.249192][ T4422]  ? mtd_cls_resume+0x130/0x130
[   81.254031][ T4422]  mtd_add_partition+0x25d/0x420
[   81.258951][ T4422]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   81.264041][ T4422]  ? shrink_ecclayout+0xab0/0xab0
[   81.269051][ T4422]  ? __might_fault+0xb3/0x110
[   81.273708][ T4422]  ? _copy_from_user+0x111/0x170
[   81.278624][ T4422]  mtdchar_ioctl+0x14cb/0x1d70
[   81.283366][ T4422]  ? lock_chain_count+0x20/0x20
[   81.288214][ T4422]  ? mtdchar_close+0x180/0x180
[   81.292959][ T4422]  ? finish_lock_switch+0x12d/0x290
[   81.298143][ T4422]  ? verify_lock_unused+0x140/0x140
[   81.303353][ T4422]  ? finish_task_switch+0x1e4/0x650
[   81.308538][ T4422]  ? __schedule+0x11cb/0x4350
[   81.313192][ T4422]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   81.318830][ T4422]  ? rcu_lock_acquire+0x30/0x30
[   81.323663][ T4422]  ? __mutex_lock_common+0x1471/0x2400
[   81.329099][ T4422]  ? __lock_acquire+0x7d40/0x7d40
[   81.334102][ T4422]  ? do_raw_spin_lock+0x128/0x2f0
[   81.339121][ T4422]  ? __rwlock_init+0x140/0x140
[   81.343871][ T4422]  ? do_raw_spin_unlock+0x11d/0x230
[   81.349052][ T4422]  ? __mutex_lock_common+0x147b/0x2400
[   81.354501][ T4422]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   81.359857][ T4422]  ? mutex_lock_io_nested+0x60/0x60
[   81.365047][ T4422]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   81.371044][ T4422]  mtdchar_unlocked_ioctl+0xad/0xd0
[   81.376223][ T4422]  ? mtdchar_write+0x5a0/0x5a0
[   81.380968][ T4422]  __se_sys_ioctl+0xfa/0x170
[   81.385537][ T4422]  do_syscall_64+0x4c/0xa0
[   81.389949][ T4422]  ? clear_bhb_loop+0x30/0x80
[   81.394664][ T4422]  ? clear_bhb_loop+0x30/0x80
[   81.399325][ T4422]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   81.405201][ T4422] RIP: 0033:0x7fe1100aa1d9
[   81.409599][ T4422] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   81.429201][ T4422] RSP: 002b:00007ffcacef5708 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   81.437604][ T4422] RAX: ffffffffffffffda RBX: 00007fe110331fa0 RCX: 00007fe1100aa1d9
[   81.445558][ T4422] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   81.453516][ T4422] RBP: 00007fe110141888 R08: 0000000000000000 R09: 0000000000000000
[   81.454986][ T3156] cfg80211: failed to load regulatory.db
[   81.461484][ T4422] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   81.461497][ T4422] R13: 00007fe110331fac R14: 00007fe110331fa0 R15: 00007fe110331fa0
[   81.461524][ T4422]  </TASK>
[   81.612102][  T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   81.625946][ T4422] kobject: can not set name properly!
[   81.630158][  T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   81.665701][ T4424] 0x000000000000-0x000000010000 : ""
[   81.671941][ T4396] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   81.696279][ T4424] ftl_cs: FTL header not found.
[   81.714812][ T4424] FAULT_INJECTION: forcing a failure.
[   81.714812][ T4424] name failslab, interval 1, probability 0, space 0, times 0
[   81.738100][  T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   81.781511][  T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   81.790086][  T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[   81.807801][ T4424] CPU: 0 PID: 4424 Comm: syz.3.20 Not tainted syzkaller #0
[   81.815027][ T4424] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   81.825084][ T4424] Call Trace:
[   81.828362][ T4424]  <TASK>
[   81.831292][ T4424]  dump_stack_lvl+0x188/0x250
[   81.835978][ T4424]  ? show_regs_print_info+0x20/0x20
[   81.841174][ T4424]  ? load_image+0x410/0x410
[   81.845681][ T4424]  ? __might_sleep+0xf0/0xf0
[   81.850271][ T4424]  ? __lock_acquire+0x7d40/0x7d40
[   81.855300][ T4424]  should_fail+0x383/0x4b0
[   81.859753][ T4424]  should_failslab+0x5/0x20
[   81.864253][ T4424]  slab_pre_alloc_hook+0x51/0xc0
[   81.869184][ T4424]  ? __kernfs_new_node+0xa8/0x6b0
[   81.874211][ T4424]  __kmalloc_track_caller+0x69/0x330
[   81.879491][ T4424]  ? __kernfs_new_node+0xa8/0x6b0
[   81.884522][ T4424]  kstrdup_const+0x51/0x90
[   81.888936][ T4424]  __kernfs_new_node+0xa8/0x6b0
[   81.893795][ T4424]  ? kernfs_new_node+0x250/0x250
[   81.898745][ T4424]  ? pointer+0xc60/0xc60
[   81.902989][ T4424]  ? format_decode+0xb38/0x1330
[   81.907850][ T4424]  kernfs_new_node+0x148/0x250
[   81.912620][ T4424]  kernfs_create_dir_ns+0x40/0x120
[   81.917750][ T4424]  sysfs_create_dir_ns+0x12c/0x290
[   81.922872][ T4424]  ? sysfs_warn_dup+0xa0/0xa0
[   81.926839][  T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   81.927546][ T4424]  ? sysfs_create_dir_ns+0x167/0x290
[   81.940601][ T4424]  ? rcu_is_watching+0x11/0xa0
[   81.945363][ T4424]  ? kobject_set_name_vargs+0xc6/0x110
[   81.950828][ T4424]  kobject_add_internal+0x5ba/0xcd0
[   81.951397][  T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   81.956024][ T4424]  kobject_add+0x160/0x230
[   81.967687][ T4424]  ? kobject_init+0x1c0/0x1c0
[   81.972371][ T4424]  ? kobject_init+0x1c0/0x1c0
[   81.977045][ T4424]  ? dev_uevent_filter+0x3f/0xb0
[   81.981988][ T4424]  blk_mq_register_hctx+0x1d5/0x400
[   81.987193][ T4424]  __blk_mq_register_dev+0x206/0x640
[   81.992489][ T4424]  ? debugfs_create_dir+0x423/0x4c0
[   81.993244][  T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   81.997690][ T4424]  blk_register_queue+0x1fc/0x3a0
[   81.997717][ T4424]  device_add_disk+0x60f/0xde0
[   82.014655][ T4424]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   82.019951][ T4424]  mtdblock_add_mtd+0x186/0x240
[   82.024804][ T4424]  blktrans_notify_add+0x95/0xe0
[   82.024969][  T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   82.029739][ T4424]  add_mtd_device+0xd40/0x1260
[   82.029771][ T4424]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   82.048102][ T4424]  ? mtd_cls_resume+0x130/0x130
[   82.052971][ T4424]  mtd_add_partition+0x25d/0x420
[   82.057921][ T4424]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   82.063039][ T4424]  ? shrink_ecclayout+0xab0/0xab0
[   82.068087][ T4424]  ? __might_fault+0xb3/0x110
[   82.070159][  T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   82.072767][ T4424]  ? _copy_from_user+0x111/0x170
[   82.072789][ T4424]  mtdchar_ioctl+0x14cb/0x1d70
[   82.072811][ T4424]  ? mtdchar_close+0x180/0x180
[   82.072832][ T4424]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   82.072856][ T4424]  ? verify_lock_unused+0x140/0x140
[   82.105680][ T4424]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   82.111327][ T4424]  ? rcu_lock_release+0x5/0x20
[   82.112136][  T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[   82.116108][ T4424]  ? __mutex_trylock_common+0x15c/0x260
[   82.128853][ T4424]  ? rcu_lock_release+0x20/0x20
[   82.133715][ T4424]  ? kasan_quarantine_put+0xd4/0x210
[   82.139016][ T4424]  ? __mutex_lock_common+0x435/0x2400
[   82.144401][ T4424]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   82.149783][ T4424]  ? mutex_lock_io_nested+0x60/0x60
[   82.154997][ T4424]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   82.160992][ T4424]  mtdchar_unlocked_ioctl+0xad/0xd0
[   82.166187][ T4424]  ? mtdchar_write+0x5a0/0x5a0
[   82.170949][ T4424]  __se_sys_ioctl+0xfa/0x170
[   82.175542][ T4424]  do_syscall_64+0x4c/0xa0
[   82.179957][ T4424]  ? clear_bhb_loop+0x30/0x80
[   82.184636][ T4424]  ? clear_bhb_loop+0x30/0x80
[   82.189322][ T4424]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   82.195220][ T4424] RIP: 0033:0x7f3e68e401d9
[   82.199635][ T4424] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   82.219237][ T4424] RSP: 002b:00007ffd0098da68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   82.227658][ T4424] RAX: ffffffffffffffda RBX: 00007f3e690c7fa0 RCX: 00007f3e68e401d9
[   82.235632][ T4424] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   82.243606][ T4424] RBP: 00007f3e68ed7888 R08: 0000000000000000 R09: 0000000000000000
[   82.251572][ T4424] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   82.259550][ T4424] R13: 00007f3e690c7fac R14: 00007f3e690c7fa0 R15: 00007f3e690c7fa0
[   82.267889][ T4424]  </TASK>
[   82.282367][ T4424] kobject_add_internal failed for cpu1 (error: -12 parent: 0)
[   82.301011][ T4428] 0x000000000000-0x000000010000 : ""
[   82.317367][ T4428] ftl_cs: FTL header not found.
[   82.331978][ T4428] FAULT_INJECTION: forcing a failure.
[   82.331978][ T4428] name failslab, interval 1, probability 0, space 0, times 0
[   82.368923][ T4428] CPU: 0 PID: 4428 Comm: syz.2.26 Not tainted syzkaller #0
[   82.376168][ T4428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   82.386228][ T4428] Call Trace:
[   82.389512][ T4428]  <TASK>
[   82.392442][ T4428]  dump_stack_lvl+0x188/0x250
[   82.397126][ T4428]  ? show_regs_print_info+0x20/0x20
[   82.402326][ T4428]  ? load_image+0x410/0x410
[   82.406835][ T4428]  ? __might_sleep+0xf0/0xf0
[   82.411426][ T4428]  ? __lock_acquire+0x7d40/0x7d40
[   82.416463][ T4428]  should_fail+0x383/0x4b0
[   82.420894][ T4428]  should_failslab+0x5/0x20
[   82.425399][ T4428]  slab_pre_alloc_hook+0x51/0xc0
[   82.430340][ T4428]  ? security_inode_alloc+0x30/0x110
[   82.435630][ T4428]  kmem_cache_alloc+0x3d/0x280
[   82.440405][ T4428]  security_inode_alloc+0x30/0x110
[   82.445518][ T4428]  inode_init_always+0x8e5/0xc90
[   82.450446][ T4428]  new_inode_pseudo+0x8e/0x210
[   82.455205][ T4428]  new_inode+0x25/0x1d0
[   82.459347][ T4428]  ? start_creating+0x1f5/0x310
[   82.464183][ T4428]  __debugfs_create_file+0x147/0x500
[   82.469458][ T4428]  blk_mq_debugfs_register+0xcf/0x7e0
[   82.474812][ T4428]  ? debugfs_create_dir+0x423/0x4c0
[   82.479993][ T4428]  blk_register_queue+0x204/0x3a0
[   82.485005][ T4428]  device_add_disk+0x60f/0xde0
[   82.489761][ T4428]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   82.495034][ T4428]  mtdblock_add_mtd+0x186/0x240
[   82.499868][ T4428]  blktrans_notify_add+0x95/0xe0
[   82.504789][ T4428]  add_mtd_device+0xd40/0x1260
[   82.509546][ T4428]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   82.515339][ T4428]  ? mtd_cls_resume+0x130/0x130
[   82.520186][ T4428]  mtd_add_partition+0x25d/0x420
[   82.525114][ T4428]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   82.530210][ T4428]  ? shrink_ecclayout+0xab0/0xab0
[   82.535232][ T4428]  ? __might_fault+0xb3/0x110
[   82.539895][ T4428]  ? _copy_from_user+0x111/0x170
[   82.544816][ T4428]  mtdchar_ioctl+0x14cb/0x1d70
[   82.549561][ T4428]  ? lock_chain_count+0x20/0x20
[   82.554396][ T4428]  ? mtdchar_close+0x180/0x180
[   82.559144][ T4428]  ? finish_lock_switch+0x12d/0x290
[   82.564323][ T4428]  ? verify_lock_unused+0x140/0x140
[   82.569504][ T4428]  ? finish_task_switch+0x12f/0x650
[   82.574697][ T4428]  ? __schedule+0x11cb/0x4350
[   82.579356][ T4428]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   82.584989][ T4428]  ? rcu_lock_acquire+0x30/0x30
[   82.589822][ T4428]  ? __mutex_lock_common+0x1471/0x2400
[   82.595266][ T4428]  ? __lock_acquire+0x7d40/0x7d40
[   82.600272][ T4428]  ? do_raw_spin_lock+0x128/0x2f0
[   82.605279][ T4428]  ? __rwlock_init+0x140/0x140
[   82.610027][ T4428]  ? do_raw_spin_unlock+0x11d/0x230
[   82.615207][ T4428]  ? __mutex_lock_common+0x147b/0x2400
[   82.620652][ T4428]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   82.626010][ T4428]  ? mutex_lock_io_nested+0x60/0x60
[   82.631196][ T4428]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   82.637164][ T4428]  mtdchar_unlocked_ioctl+0xad/0xd0
[   82.642342][ T4428]  ? mtdchar_write+0x5a0/0x5a0
[   82.647086][ T4428]  __se_sys_ioctl+0xfa/0x170
[   82.651657][ T4428]  do_syscall_64+0x4c/0xa0
[   82.656062][ T4428]  ? clear_bhb_loop+0x30/0x80
[   82.660719][ T4428]  ? clear_bhb_loop+0x30/0x80
[   82.665380][ T4428]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   82.671256][ T4428] RIP: 0033:0x7f36f4c591d9
[   82.675658][ T4428] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   82.695249][ T4428] RSP: 002b:00007ffc5e94ee28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   82.703646][ T4428] RAX: ffffffffffffffda RBX: 00007f36f4ee0fa0 RCX: 00007f36f4c591d9
[   82.711601][ T4428] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   82.719554][ T4428] RBP: 00007f36f4cf0888 R08: 0000000000000000 R09: 0000000000000000
[   82.727508][ T4428] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   82.735459][ T4428] R13: 00007f36f4ee0fac R14: 00007f36f4ee0fa0 R15: 00007f36f4ee0fa0
[   82.743424][ T4428]  </TASK>
[   82.763493][ T4428] debugfs: out of free dentries, can not create file 'poll_stat'
[   82.787483][ T4427] 0x000000000000-0x000000010000 : ""
[   82.801004][ T4427] ftl_cs: FTL header not found.
[   82.829429][ T4427] FAULT_INJECTION: forcing a failure.
[   82.829429][ T4427] name failslab, interval 1, probability 0, space 0, times 0
[   82.849075][ T4427] CPU: 1 PID: 4427 Comm: syz.0.25 Not tainted syzkaller #0
[   82.856311][ T4427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   82.866375][ T4427] Call Trace:
[   82.869660][ T4427]  <TASK>
[   82.872587][ T4427]  dump_stack_lvl+0x188/0x250
[   82.877251][ T4427]  ? show_regs_print_info+0x20/0x20
[   82.882430][ T4427]  ? load_image+0x410/0x410
[   82.886914][ T4427]  ? __might_sleep+0xf0/0xf0
[   82.891484][ T4427]  ? __lock_acquire+0x7d40/0x7d40
[   82.896492][ T4427]  should_fail+0x383/0x4b0
[   82.900892][ T4427]  should_failslab+0x5/0x20
[   82.905377][ T4427]  slab_pre_alloc_hook+0x51/0xc0
[   82.910302][ T4427]  ? __kernfs_new_node+0xe3/0x6b0
[   82.915306][ T4427]  kmem_cache_alloc+0x3d/0x280
[   82.920072][ T4427]  __kernfs_new_node+0xe3/0x6b0
[   82.924908][ T4427]  ? kernfs_new_node+0x250/0x250
[   82.929842][ T4427]  ? pointer+0xc60/0xc60
[   82.934063][ T4427]  ? format_decode+0xb38/0x1330
[   82.938900][ T4427]  kernfs_new_node+0x148/0x250
[   82.943654][ T4427]  kernfs_create_dir_ns+0x40/0x120
[   82.948764][ T4427]  sysfs_create_dir_ns+0x12c/0x290
[   82.953858][ T4427]  ? sysfs_warn_dup+0xa0/0xa0
[   82.958521][ T4427]  ? sysfs_create_dir_ns+0x167/0x290
[   82.963780][ T4427]  ? rcu_is_watching+0x11/0xa0
[   82.968533][ T4427]  ? kobject_set_name_vargs+0xc6/0x110
[   82.973979][ T4427]  kobject_add_internal+0x5ba/0xcd0
[   82.979168][ T4427]  kobject_add+0x160/0x230
[   82.983570][ T4427]  ? kobject_init+0x1c0/0x1c0
[   82.988252][ T4427]  ? kobject_init+0x1c0/0x1c0
[   82.992923][ T4427]  ? dev_uevent_filter+0x3f/0xb0
[   82.997843][ T4427]  blk_mq_register_hctx+0x1d5/0x400
[   83.003024][ T4427]  __blk_mq_register_dev+0x206/0x640
[   83.008313][ T4427]  ? debugfs_create_dir+0x423/0x4c0
[   83.013493][ T4427]  blk_register_queue+0x1fc/0x3a0
[   83.018501][ T4427]  device_add_disk+0x60f/0xde0
[   83.023270][ T4427]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   83.028537][ T4427]  mtdblock_add_mtd+0x186/0x240
[   83.033365][ T4427]  blktrans_notify_add+0x95/0xe0
[   83.038286][ T4427]  add_mtd_device+0xd40/0x1260
[   83.043051][ T4427]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   83.048845][ T4427]  ? mtd_cls_resume+0x130/0x130
[   83.053689][ T4427]  mtd_add_partition+0x25d/0x420
[   83.058632][ T4427]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   83.063724][ T4427]  ? shrink_ecclayout+0xab0/0xab0
[   83.068733][ T4427]  ? __might_fault+0xb3/0x110
[   83.073389][ T4427]  ? _copy_from_user+0x111/0x170
[   83.078303][ T4427]  mtdchar_ioctl+0x14cb/0x1d70
[   83.083048][ T4427]  ? lock_chain_count+0x20/0x20
[   83.087880][ T4427]  ? mtdchar_close+0x180/0x180
[   83.092623][ T4427]  ? finish_lock_switch+0x12d/0x290
[   83.097803][ T4427]  ? verify_lock_unused+0x140/0x140
[   83.102990][ T4427]  ? finish_task_switch+0x12f/0x650
[   83.108192][ T4427]  ? __schedule+0x11cb/0x4350
[   83.112849][ T4427]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   83.118470][ T4427]  ? rcu_lock_acquire+0x30/0x30
[   83.123300][ T4427]  ? __mutex_lock_common+0x1471/0x2400
[   83.128758][ T4427]  ? __lock_acquire+0x7d40/0x7d40
[   83.133761][ T4427]  ? do_raw_spin_lock+0x128/0x2f0
[   83.138782][ T4427]  ? __rwlock_init+0x140/0x140
[   83.143528][ T4427]  ? do_raw_spin_unlock+0x11d/0x230
[   83.148714][ T4427]  ? __mutex_lock_common+0x147b/0x2400
[   83.154159][ T4427]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   83.159512][ T4427]  ? mutex_lock_io_nested+0x60/0x60
[   83.164695][ T4427]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   83.170661][ T4427]  mtdchar_unlocked_ioctl+0xad/0xd0
[   83.175841][ T4427]  ? mtdchar_write+0x5a0/0x5a0
[   83.180584][ T4427]  __se_sys_ioctl+0xfa/0x170
[   83.185158][ T4427]  do_syscall_64+0x4c/0xa0
[   83.189569][ T4427]  ? clear_bhb_loop+0x30/0x80
[   83.194230][ T4427]  ? clear_bhb_loop+0x30/0x80
[   83.198889][ T4427]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   83.204763][ T4427] RIP: 0033:0x7fe1100aa1d9
[   83.209160][ T4427] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   83.228743][ T4427] RSP: 002b:00007ffcacef5708 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   83.237139][ T4427] RAX: ffffffffffffffda RBX: 00007fe110331fa0 RCX: 00007fe1100aa1d9
[   83.245091][ T4427] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   83.253045][ T4427] RBP: 00007fe110141888 R08: 0000000000000000 R09: 0000000000000000
[   83.261011][ T4427] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   83.268961][ T4427] R13: 00007fe110331fac R14: 00007fe110331fa0 R15: 00007fe110331fa0
[   83.276919][ T4427]  </TASK>
[   83.289354][ T4427] kobject_add_internal failed for cpu1 (error: -12 parent: 0)
[   83.301235][ T4430] 0x000000000000-0x000000010000 : ""
[   83.313555][ T4430] ftl_cs: FTL header not found.
[   83.320929][ T4430] FAULT_INJECTION: forcing a failure.
[   83.320929][ T4430] name failslab, interval 1, probability 0, space 0, times 0
[   83.348064][ T4430] CPU: 1 PID: 4430 Comm: syz.4.21 Not tainted syzkaller #0
[   83.355295][ T4430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   83.365355][ T4430] Call Trace:
[   83.368642][ T4430]  <TASK>
[   83.371574][ T4430]  dump_stack_lvl+0x188/0x250
[   83.376246][ T4430]  ? show_regs_print_info+0x20/0x20
[   83.381428][ T4430]  ? load_image+0x410/0x410
[   83.385930][ T4430]  ? __might_sleep+0xf0/0xf0
[   83.390500][ T4430]  ? __lock_acquire+0x7d40/0x7d40
2026/10/09 05:46:58 executed programs: 22
[   83.395525][ T4430]  should_fail+0x383/0x4b0
[   83.399925][ T4430]  should_failslab+0x5/0x20
[   83.404420][ T4430]  slab_pre_alloc_hook+0x51/0xc0
[   83.409348][ T4430]  ? __kernfs_new_node+0xe3/0x6b0
[   83.414378][ T4430]  kmem_cache_alloc+0x3d/0x280
[   83.419121][ T4430]  __kernfs_new_node+0xe3/0x6b0
[   83.423952][ T4430]  ? kernfs_new_node+0x250/0x250
[   83.428873][ T4430]  ? pointer+0xc60/0xc60
[   83.433094][ T4430]  ? format_decode+0xb38/0x1330
[   83.437945][ T4430]  kernfs_new_node+0x148/0x250
[   83.442691][ T4430]  kernfs_create_dir_ns+0x40/0x120
[   83.447782][ T4430]  sysfs_create_dir_ns+0x12c/0x290
[   83.452882][ T4430]  ? sysfs_warn_dup+0xa0/0xa0
[   83.457558][ T4430]  ? sysfs_create_dir_ns+0x167/0x290
[   83.462825][ T4430]  ? rcu_is_watching+0x11/0xa0
[   83.467566][ T4430]  ? kobject_set_name_vargs+0xc6/0x110
[   83.473002][ T4430]  kobject_add_internal+0x5ba/0xcd0
[   83.478179][ T4430]  kobject_add+0x160/0x230
[   83.482574][ T4430]  ? kobject_init+0x1c0/0x1c0
[   83.487228][ T4430]  ? kobject_init+0x1c0/0x1c0
[   83.491896][ T4430]  ? dev_uevent_filter+0x3f/0xb0
[   83.496823][ T4430]  blk_mq_register_hctx+0x1d5/0x400
[   83.502012][ T4430]  __blk_mq_register_dev+0x206/0x640
[   83.507294][ T4430]  ? debugfs_create_dir+0x423/0x4c0
[   83.512495][ T4430]  blk_register_queue+0x1fc/0x3a0
[   83.517519][ T4430]  device_add_disk+0x60f/0xde0
[   83.522267][ T4430]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   83.527561][ T4430]  mtdblock_add_mtd+0x186/0x240
[   83.532395][ T4430]  blktrans_notify_add+0x95/0xe0
[   83.537309][ T4430]  add_mtd_device+0xd40/0x1260
[   83.542076][ T4430]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   83.547865][ T4430]  ? mtd_cls_resume+0x130/0x130
[   83.552708][ T4430]  mtd_add_partition+0x25d/0x420
[   83.557633][ T4430]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   83.562739][ T4430]  ? shrink_ecclayout+0xab0/0xab0
[   83.567749][ T4430]  ? __might_fault+0xb3/0x110
[   83.572423][ T4430]  ? _copy_from_user+0x111/0x170
[   83.577354][ T4430]  mtdchar_ioctl+0x14cb/0x1d70
[   83.582097][ T4430]  ? lock_chain_count+0x20/0x20
[   83.586932][ T4430]  ? mtdchar_close+0x180/0x180
[   83.591677][ T4430]  ? finish_lock_switch+0x12d/0x290
[   83.596853][ T4430]  ? verify_lock_unused+0x140/0x140
[   83.602034][ T4430]  ? finish_task_switch+0x12f/0x650
[   83.607233][ T4430]  ? __schedule+0x11cb/0x4350
[   83.611888][ T4430]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   83.617505][ T4430]  ? rcu_lock_acquire+0x30/0x30
[   83.622332][ T4430]  ? __mutex_lock_common+0x1471/0x2400
[   83.627770][ T4430]  ? __lock_acquire+0x7d40/0x7d40
[   83.632767][ T4430]  ? do_raw_spin_lock+0x128/0x2f0
[   83.637789][ T4430]  ? __rwlock_init+0x140/0x140
[   83.642532][ T4430]  ? do_raw_spin_unlock+0x11d/0x230
[   83.647710][ T4430]  ? __mutex_lock_common+0x147b/0x2400
[   83.653164][ T4430]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   83.658544][ T4430]  ? mutex_lock_io_nested+0x60/0x60
[   83.663736][ T4430]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   83.669698][ T4430]  mtdchar_unlocked_ioctl+0xad/0xd0
[   83.674880][ T4430]  ? mtdchar_write+0x5a0/0x5a0
[   83.679623][ T4430]  __se_sys_ioctl+0xfa/0x170
[   83.684191][ T4430]  do_syscall_64+0x4c/0xa0
[   83.688582][ T4430]  ? clear_bhb_loop+0x30/0x80
[   83.693239][ T4430]  ? clear_bhb_loop+0x30/0x80
[   83.697893][ T4430]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   83.703765][ T4430] RIP: 0033:0x7f4f307f11d9
[   83.708160][ T4430] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   83.727742][ T4430] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   83.736136][ T4430] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   83.744088][ T4430] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   83.752041][ T4430] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   83.759992][ T4430] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   83.767943][ T4430] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   83.775916][ T4430]  </TASK>
[   83.787336][ T4430] kobject_add_internal failed for cpu1 (error: -12 parent: 0)
[   83.798046][ T4431] 0x000000000000-0x000000010000 : ""
[   83.813848][ T4431] ftl_cs: FTL header not found.
[   83.834316][ T4431] FAULT_INJECTION: forcing a failure.
[   83.834316][ T4431] name failslab, interval 1, probability 0, space 0, times 0
[   83.852732][ T4431] CPU: 0 PID: 4431 Comm: syz.1.18 Not tainted syzkaller #0
[   83.859963][ T4431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   83.870022][ T4431] Call Trace:
[   83.873306][ T4431]  <TASK>
[   83.876239][ T4431]  dump_stack_lvl+0x188/0x250
[   83.880928][ T4431]  ? show_regs_print_info+0x20/0x20
[   83.886123][ T4431]  ? load_image+0x410/0x410
[   83.890622][ T4431]  ? __might_sleep+0xf0/0xf0
[   83.895193][ T4431]  ? __lock_acquire+0x7d40/0x7d40
[   83.900208][ T4431]  should_fail+0x383/0x4b0
[   83.904617][ T4431]  should_failslab+0x5/0x20
[   83.909124][ T4431]  slab_pre_alloc_hook+0x51/0xc0
[   83.914056][ T4431]  ? __kernfs_new_node+0xa8/0x6b0
[   83.919066][ T4431]  __kmalloc_track_caller+0x69/0x330
[   83.924340][ T4431]  ? __kernfs_new_node+0xa8/0x6b0
[   83.929384][ T4431]  kstrdup_const+0x51/0x90
[   83.933782][ T4431]  __kernfs_new_node+0xa8/0x6b0
[   83.938616][ T4431]  ? kernfs_new_node+0x250/0x250
[   83.943539][ T4431]  ? pointer+0xc60/0xc60
[   83.947781][ T4431]  ? format_decode+0xb38/0x1330
[   83.952618][ T4431]  kernfs_new_node+0x148/0x250
[   83.957364][ T4431]  kernfs_create_dir_ns+0x40/0x120
[   83.962461][ T4431]  sysfs_create_dir_ns+0x12c/0x290
[   83.967598][ T4431]  ? sysfs_warn_dup+0xa0/0xa0
[   83.972260][ T4431]  ? sysfs_create_dir_ns+0x167/0x290
[   83.977525][ T4431]  ? rcu_is_watching+0x11/0xa0
[   83.982273][ T4431]  ? kobject_set_name_vargs+0xc6/0x110
[   83.987734][ T4431]  kobject_add_internal+0x5ba/0xcd0
[   83.992932][ T4431]  kobject_add+0x160/0x230
[   83.997344][ T4431]  ? kobject_init+0x1c0/0x1c0
[   84.002004][ T4431]  ? kobject_init+0x1c0/0x1c0
[   84.006682][ T4431]  ? dev_uevent_filter+0x3f/0xb0
[   84.011615][ T4431]  blk_mq_register_hctx+0x1d5/0x400
[   84.016819][ T4431]  __blk_mq_register_dev+0x206/0x640
[   84.022095][ T4431]  ? debugfs_create_dir+0x423/0x4c0
[   84.027291][ T4431]  blk_register_queue+0x1fc/0x3a0
[   84.032295][ T4431]  device_add_disk+0x60f/0xde0
[   84.037042][ T4431]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   84.042317][ T4431]  mtdblock_add_mtd+0x186/0x240
[   84.047161][ T4431]  blktrans_notify_add+0x95/0xe0
[   84.052097][ T4431]  add_mtd_device+0xd40/0x1260
[   84.056849][ T4431]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   84.062644][ T4431]  ? mtd_cls_resume+0x130/0x130
[   84.067521][ T4431]  mtd_add_partition+0x25d/0x420
[   84.072460][ T4431]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   84.077570][ T4431]  ? shrink_ecclayout+0xab0/0xab0
[   84.082593][ T4431]  ? __might_fault+0xb3/0x110
[   84.087266][ T4431]  ? _copy_from_user+0x111/0x170
[   84.092184][ T4431]  mtdchar_ioctl+0x14cb/0x1d70
[   84.096943][ T4431]  ? lock_chain_count+0x20/0x20
[   84.101786][ T4431]  ? mtdchar_close+0x180/0x180
[   84.106546][ T4431]  ? finish_lock_switch+0x12d/0x290
[   84.111733][ T4431]  ? verify_lock_unused+0x140/0x140
[   84.116927][ T4431]  ? finish_task_switch+0x12f/0x650
[   84.122120][ T4431]  ? __schedule+0x11cb/0x4350
[   84.126794][ T4431]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   84.132426][ T4431]  ? rcu_lock_acquire+0x30/0x30
[   84.137270][ T4431]  ? __mutex_lock_common+0x1471/0x2400
[   84.142715][ T4431]  ? __lock_acquire+0x7d40/0x7d40
[   84.147747][ T4431]  ? do_raw_spin_lock+0x128/0x2f0
[   84.152749][ T4431]  ? __rwlock_init+0x140/0x140
[   84.157505][ T4431]  ? do_raw_spin_unlock+0x11d/0x230
[   84.162692][ T4431]  ? __mutex_lock_common+0x147b/0x2400
[   84.168153][ T4431]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   84.173508][ T4431]  ? mutex_lock_io_nested+0x60/0x60
[   84.178691][ T4431]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   84.184668][ T4431]  mtdchar_unlocked_ioctl+0xad/0xd0
[   84.189864][ T4431]  ? mtdchar_write+0x5a0/0x5a0
[   84.194607][ T4431]  __se_sys_ioctl+0xfa/0x170
[   84.199193][ T4431]  do_syscall_64+0x4c/0xa0
[   84.203591][ T4431]  ? clear_bhb_loop+0x30/0x80
[   84.208281][ T4431]  ? clear_bhb_loop+0x30/0x80
[   84.212939][ T4431]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   84.218831][ T4431] RIP: 0033:0x7fef503c01d9
[   84.223230][ T4431] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   84.242838][ T4431] RSP: 002b:00007fffed71d8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   84.251276][ T4431] RAX: ffffffffffffffda RBX: 00007fef50647fa0 RCX: 00007fef503c01d9
[   84.259236][ T4431] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   84.267198][ T4431] RBP: 00007fef50457888 R08: 0000000000000000 R09: 0000000000000000
[   84.275165][ T4431] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   84.283122][ T4431] R13: 00007fef50647fac R14: 00007fef50647fa0 R15: 00007fef50647fa0
[   84.291112][ T4431]  </TASK>
[   84.299841][ T4431] kobject_add_internal failed for cpu0 (error: -12 parent: 0)
[   84.317414][ T4438] 0x000000000000-0x000000010000 : ""
[   84.328662][ T4438] ftl_cs: FTL header not found.
[   84.354459][ T4438] FAULT_INJECTION: forcing a failure.
[   84.354459][ T4438] name failslab, interval 1, probability 0, space 0, times 0
[   84.372728][ T4438] CPU: 0 PID: 4438 Comm: syz.4.30 Not tainted syzkaller #0
[   84.379959][ T4438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   84.390020][ T4438] Call Trace:
[   84.393307][ T4438]  <TASK>
[   84.396232][ T4438]  dump_stack_lvl+0x188/0x250
[   84.400906][ T4438]  ? show_regs_print_info+0x20/0x20
[   84.406095][ T4438]  ? load_image+0x410/0x410
[   84.410594][ T4438]  ? __might_sleep+0xf0/0xf0
[   84.415169][ T4438]  ? __lock_acquire+0x7d40/0x7d40
[   84.420178][ T4438]  should_fail+0x383/0x4b0
[   84.424589][ T4438]  should_failslab+0x5/0x20
[   84.429089][ T4438]  slab_pre_alloc_hook+0x51/0xc0
[   84.434010][ T4438]  ? __kernfs_new_node+0xe3/0x6b0
[   84.439021][ T4438]  kmem_cache_alloc+0x3d/0x280
[   84.443777][ T4438]  __kernfs_new_node+0xe3/0x6b0
[   84.448637][ T4438]  ? kernfs_new_node+0x250/0x250
[   84.453597][ T4438]  ? pointer+0xc60/0xc60
[   84.457826][ T4438]  ? format_decode+0xb38/0x1330
[   84.462685][ T4438]  kernfs_new_node+0x148/0x250
[   84.467467][ T4438]  kernfs_create_dir_ns+0x40/0x120
[   84.472571][ T4438]  sysfs_create_dir_ns+0x12c/0x290
[   84.477703][ T4438]  ? sysfs_warn_dup+0xa0/0xa0
[   84.482363][ T4438]  ? sysfs_create_dir_ns+0x167/0x290
[   84.487656][ T4438]  ? rcu_is_watching+0x11/0xa0
[   84.492401][ T4438]  ? kobject_set_name_vargs+0xc6/0x110
[   84.497840][ T4438]  kobject_add_internal+0x5ba/0xcd0
[   84.503025][ T4438]  kobject_add+0x160/0x230
[   84.507437][ T4438]  ? kobject_init+0x1c0/0x1c0
[   84.512096][ T4438]  ? kobject_init+0x1c0/0x1c0
[   84.516747][ T4438]  ? dev_uevent_filter+0x3f/0xb0
[   84.521673][ T4438]  blk_mq_register_hctx+0x1d5/0x400
[   84.526867][ T4438]  __blk_mq_register_dev+0x206/0x640
[   84.532133][ T4438]  ? debugfs_create_dir+0x423/0x4c0
[   84.537315][ T4438]  blk_register_queue+0x1fc/0x3a0
[   84.542327][ T4438]  device_add_disk+0x60f/0xde0
[   84.547102][ T4438]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   84.552378][ T4438]  mtdblock_add_mtd+0x186/0x240
[   84.557229][ T4438]  blktrans_notify_add+0x95/0xe0
[   84.562151][ T4438]  add_mtd_device+0xd40/0x1260
[   84.566918][ T4438]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   84.572708][ T4438]  ? mtd_cls_resume+0x130/0x130
[   84.577554][ T4438]  mtd_add_partition+0x25d/0x420
[   84.582487][ T4438]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   84.587623][ T4438]  ? shrink_ecclayout+0xab0/0xab0
[   84.592634][ T4438]  ? __might_fault+0xb3/0x110
[   84.597293][ T4438]  ? _copy_from_user+0x111/0x170
[   84.602216][ T4438]  mtdchar_ioctl+0x14cb/0x1d70
[   84.606976][ T4438]  ? mtdchar_close+0x180/0x180
[   84.611733][ T4438]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   84.617703][ T4438]  ? verify_lock_unused+0x140/0x140
[   84.622890][ T4438]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   84.628520][ T4438]  ? rcu_lock_release+0x5/0x20
[   84.633277][ T4438]  ? __mutex_trylock_common+0x15c/0x260
[   84.638802][ T4438]  ? rcu_lock_release+0x20/0x20
[   84.643640][ T4438]  ? kasan_quarantine_put+0xd4/0x210
[   84.648920][ T4438]  ? __mutex_lock_common+0x435/0x2400
[   84.654278][ T4438]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   84.659631][ T4438]  ? mutex_lock_io_nested+0x60/0x60
[   84.664819][ T4438]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   84.670800][ T4438]  mtdchar_unlocked_ioctl+0xad/0xd0
[   84.675992][ T4438]  ? mtdchar_write+0x5a0/0x5a0
[   84.680737][ T4438]  __se_sys_ioctl+0xfa/0x170
[   84.685316][ T4438]  do_syscall_64+0x4c/0xa0
[   84.689728][ T4438]  ? clear_bhb_loop+0x30/0x80
[   84.694385][ T4438]  ? clear_bhb_loop+0x30/0x80
[   84.699046][ T4438]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   84.704924][ T4438] RIP: 0033:0x7f4f307f11d9
[   84.709333][ T4438] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   84.728918][ T4438] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   84.737314][ T4438] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   84.745270][ T4438] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   84.753258][ T4438] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   84.761225][ T4438] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   84.769176][ T4438] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   84.777138][ T4438]  </TASK>
[   84.788779][ T4438] kobject_add_internal failed for cpu1 (error: -12 parent: 0)
[   84.809803][ T4433] 0x000000000000-0x000000010000 : ""
[   84.824929][ T4433] ftl_cs: FTL header not found.
[   84.833127][ T4433] FAULT_INJECTION: forcing a failure.
[   84.833127][ T4433] name failslab, interval 1, probability 0, space 0, times 0
[   84.857844][ T4433] CPU: 0 PID: 4433 Comm: syz.2.28 Not tainted syzkaller #0
[   84.865089][ T4433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   84.875142][ T4433] Call Trace:
[   84.878408][ T4433]  <TASK>
[   84.881327][ T4433]  dump_stack_lvl+0x188/0x250
[   84.886015][ T4433]  ? show_regs_print_info+0x20/0x20
[   84.891243][ T4433]  ? load_image+0x410/0x410
[   84.895730][ T4433]  ? __might_sleep+0xf0/0xf0
[   84.900303][ T4433]  ? __lock_acquire+0x7d40/0x7d40
[   84.905329][ T4433]  should_fail+0x383/0x4b0
[   84.909737][ T4433]  should_failslab+0x5/0x20
[   84.914220][ T4433]  slab_pre_alloc_hook+0x51/0xc0
[   84.919137][ T4433]  ? __kernfs_new_node+0xe3/0x6b0
[   84.924148][ T4433]  kmem_cache_alloc+0x3d/0x280
[   84.928916][ T4433]  __kernfs_new_node+0xe3/0x6b0
[   84.933757][ T4433]  ? kernfs_new_node+0x250/0x250
[   84.938678][ T4433]  ? pointer+0xc60/0xc60
[   84.942908][ T4433]  ? format_decode+0xb38/0x1330
[   84.947759][ T4433]  kernfs_new_node+0x148/0x250
[   84.952505][ T4433]  kernfs_create_dir_ns+0x40/0x120
[   84.957608][ T4433]  sysfs_create_dir_ns+0x12c/0x290
[   84.962710][ T4433]  ? sysfs_warn_dup+0xa0/0xa0
[   84.967380][ T4433]  ? sysfs_create_dir_ns+0x167/0x290
[   84.972667][ T4433]  ? rcu_is_watching+0x11/0xa0
[   84.977422][ T4433]  ? kobject_set_name_vargs+0xc6/0x110
[   84.982867][ T4433]  kobject_add_internal+0x5ba/0xcd0
[   84.988069][ T4433]  kobject_add+0x160/0x230
[   84.992481][ T4433]  ? kobject_init+0x1c0/0x1c0
[   84.997162][ T4433]  ? kobject_init+0x1c0/0x1c0
[   85.001823][ T4433]  ? dev_uevent_filter+0x3f/0xb0
[   85.006774][ T4433]  blk_mq_register_hctx+0x1d5/0x400
[   85.011962][ T4433]  __blk_mq_register_dev+0x206/0x640
[   85.017246][ T4433]  ? debugfs_create_dir+0x423/0x4c0
[   85.022435][ T4433]  blk_register_queue+0x1fc/0x3a0
[   85.027460][ T4433]  device_add_disk+0x60f/0xde0
[   85.032221][ T4433]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   85.037527][ T4433]  mtdblock_add_mtd+0x186/0x240
[   85.042367][ T4433]  blktrans_notify_add+0x95/0xe0
[   85.047300][ T4433]  add_mtd_device+0xd40/0x1260
[   85.052060][ T4433]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   85.057893][ T4433]  ? mtd_cls_resume+0x130/0x130
[   85.062749][ T4433]  mtd_add_partition+0x25d/0x420
[   85.067685][ T4433]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   85.072778][ T4433]  ? shrink_ecclayout+0xab0/0xab0
[   85.077807][ T4433]  ? __might_fault+0xb3/0x110
[   85.082469][ T4433]  ? _copy_from_user+0x111/0x170
[   85.087407][ T4433]  mtdchar_ioctl+0x14cb/0x1d70
[   85.092157][ T4433]  ? lock_chain_count+0x20/0x20
[   85.097006][ T4433]  ? mtdchar_close+0x180/0x180
[   85.101767][ T4433]  ? finish_lock_switch+0x12d/0x290
[   85.106974][ T4433]  ? verify_lock_unused+0x140/0x140
[   85.112180][ T4433]  ? finish_task_switch+0x12f/0x650
[   85.117380][ T4433]  ? __schedule+0x11cb/0x4350
[   85.122058][ T4433]  ? rcu_lock_acquire+0x30/0x30
[   85.126911][ T4433]  ? release_firmware_map_entry+0x190/0x190
[   85.132784][ T4433]  ? __mutex_lock_common+0x1471/0x2400
[   85.138239][ T4433]  ? __lock_acquire+0x7d40/0x7d40
[   85.143256][ T4433]  ? do_raw_spin_lock+0x128/0x2f0
[   85.148286][ T4433]  ? __rwlock_init+0x140/0x140
[   85.153040][ T4433]  ? do_raw_spin_unlock+0x11d/0x230
[   85.158226][ T4433]  ? __mutex_lock_common+0x147b/0x2400
[   85.163685][ T4433]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   85.169058][ T4433]  ? mutex_lock_io_nested+0x60/0x60
[   85.174249][ T4433]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   85.180249][ T4433]  mtdchar_unlocked_ioctl+0xad/0xd0
[   85.185454][ T4433]  ? mtdchar_write+0x5a0/0x5a0
[   85.190229][ T4433]  __se_sys_ioctl+0xfa/0x170
[   85.194848][ T4433]  do_syscall_64+0x4c/0xa0
[   85.199274][ T4433]  ? clear_bhb_loop+0x30/0x80
[   85.203957][ T4433]  ? clear_bhb_loop+0x30/0x80
[   85.208641][ T4433]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   85.214527][ T4433] RIP: 0033:0x7f36f4c591d9
[   85.218948][ T4433] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   85.238539][ T4433] RSP: 002b:00007ffc5e94ee28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   85.246939][ T4433] RAX: ffffffffffffffda RBX: 00007f36f4ee0fa0 RCX: 00007f36f4c591d9
[   85.254903][ T4433] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   85.262872][ T4433] RBP: 00007f36f4cf0888 R08: 0000000000000000 R09: 0000000000000000
[   85.270845][ T4433] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   85.278798][ T4433] R13: 00007f36f4ee0fac R14: 00007f36f4ee0fa0 R15: 00007f36f4ee0fa0
[   85.286785][ T4433]  </TASK>
[   85.292684][ T4433] kobject_add_internal failed for cpu0 (error: -12 parent: 0)
[   85.312683][ T4434] 0x000000000000-0x000000010000 : ""
[   85.327377][ T4434] ftl_cs: FTL header not found.
[   85.340795][ T4434] FAULT_INJECTION: forcing a failure.
[   85.340795][ T4434] name failslab, interval 1, probability 0, space 0, times 0
[   85.354117][ T4434] CPU: 1 PID: 4434 Comm: syz.3.27 Not tainted syzkaller #0
[   85.361336][ T4434] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   85.371396][ T4434] Call Trace:
[   85.374680][ T4434]  <TASK>
[   85.377619][ T4434]  dump_stack_lvl+0x188/0x250
[   85.382279][ T4434]  ? show_regs_print_info+0x20/0x20
[   85.387457][ T4434]  ? load_image+0x410/0x410
[   85.391943][ T4434]  ? __might_sleep+0xf0/0xf0
[   85.396519][ T4434]  ? __lock_acquire+0x7d40/0x7d40
[   85.401540][ T4434]  should_fail+0x383/0x4b0
[   85.405943][ T4434]  should_failslab+0x5/0x20
[   85.410425][ T4434]  slab_pre_alloc_hook+0x51/0xc0
[   85.415345][ T4434]  ? __kernfs_new_node+0xa8/0x6b0
[   85.420383][ T4434]  __kmalloc_track_caller+0x69/0x330
[   85.425650][ T4434]  ? __kernfs_new_node+0xa8/0x6b0
[   85.430655][ T4434]  kstrdup_const+0x51/0x90
[   85.435052][ T4434]  __kernfs_new_node+0xa8/0x6b0
[   85.439903][ T4434]  ? kernfs_new_node+0x250/0x250
[   85.444823][ T4434]  ? pointer+0xc60/0xc60
[   85.449047][ T4434]  ? format_decode+0xb38/0x1330
[   85.453879][ T4434]  kernfs_new_node+0x148/0x250
[   85.458634][ T4434]  kernfs_create_dir_ns+0x40/0x120
[   85.463752][ T4434]  sysfs_create_dir_ns+0x12c/0x290
[   85.468866][ T4434]  ? sysfs_warn_dup+0xa0/0xa0
[   85.473520][ T4434]  ? sysfs_create_dir_ns+0x167/0x290
[   85.478781][ T4434]  ? rcu_is_watching+0x11/0xa0
[   85.483531][ T4434]  ? kobject_set_name_vargs+0xc6/0x110
[   85.488973][ T4434]  kobject_add_internal+0x5ba/0xcd0
[   85.494172][ T4434]  kobject_add+0x160/0x230
[   85.498573][ T4434]  ? kobject_init+0x1c0/0x1c0
[   85.503233][ T4434]  ? kobject_init+0x1c0/0x1c0
[   85.507973][ T4434]  ? dev_uevent_filter+0x3f/0xb0
[   85.512903][ T4434]  blk_mq_register_hctx+0x1d5/0x400
[   85.518119][ T4434]  __blk_mq_register_dev+0x206/0x640
[   85.523390][ T4434]  ? debugfs_create_dir+0x423/0x4c0
[   85.528600][ T4434]  blk_register_queue+0x1fc/0x3a0
[   85.533612][ T4434]  device_add_disk+0x60f/0xde0
[   85.538405][ T4434]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   85.543688][ T4434]  mtdblock_add_mtd+0x186/0x240
[   85.548534][ T4434]  blktrans_notify_add+0x95/0xe0
[   85.553463][ T4434]  add_mtd_device+0xd40/0x1260
[   85.558212][ T4434]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   85.564006][ T4434]  ? mtd_cls_resume+0x130/0x130
[   85.568877][ T4434]  mtd_add_partition+0x25d/0x420
[   85.573814][ T4434]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   85.578907][ T4434]  ? shrink_ecclayout+0xab0/0xab0
[   85.583914][ T4434]  ? __might_fault+0xb3/0x110
[   85.588609][ T4434]  ? _copy_from_user+0x111/0x170
[   85.593524][ T4434]  mtdchar_ioctl+0x14cb/0x1d70
[   85.598270][ T4434]  ? lock_chain_count+0x20/0x20
[   85.603115][ T4434]  ? mtdchar_close+0x180/0x180
[   85.607862][ T4434]  ? finish_lock_switch+0x12d/0x290
[   85.613046][ T4434]  ? verify_lock_unused+0x140/0x140
[   85.618243][ T4434]  ? finish_task_switch+0x12f/0x650
[   85.623442][ T4434]  ? __schedule+0x11cb/0x4350
[   85.628113][ T4434]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   85.633729][ T4434]  ? rcu_lock_acquire+0x30/0x30
[   85.638558][ T4434]  ? __mutex_lock_common+0x1471/0x2400
[   85.643994][ T4434]  ? __lock_acquire+0x7d40/0x7d40
[   85.648993][ T4434]  ? do_raw_spin_lock+0x128/0x2f0
[   85.653994][ T4434]  ? __rwlock_init+0x140/0x140
[   85.658750][ T4434]  ? do_raw_spin_unlock+0x11d/0x230
[   85.663933][ T4434]  ? __mutex_lock_common+0x147b/0x2400
[   85.669396][ T4434]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   85.674750][ T4434]  ? mutex_lock_io_nested+0x60/0x60
[   85.679929][ T4434]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   85.685906][ T4434]  mtdchar_unlocked_ioctl+0xad/0xd0
[   85.691081][ T4434]  ? mtdchar_write+0x5a0/0x5a0
[   85.695821][ T4434]  __se_sys_ioctl+0xfa/0x170
[   85.700398][ T4434]  do_syscall_64+0x4c/0xa0
[   85.704794][ T4434]  ? clear_bhb_loop+0x30/0x80
[   85.709456][ T4434]  ? clear_bhb_loop+0x30/0x80
[   85.714117][ T4434]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   85.720008][ T4434] RIP: 0033:0x7f3e68e401d9
[   85.724402][ T4434] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   85.744000][ T4434] RSP: 002b:00007ffd0098da68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   85.752406][ T4434] RAX: ffffffffffffffda RBX: 00007f3e690c7fa0 RCX: 00007f3e68e401d9
[   85.760356][ T4434] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   85.768308][ T4434] RBP: 00007f3e68ed7888 R08: 0000000000000000 R09: 0000000000000000
[   85.776257][ T4434] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   85.784206][ T4434] R13: 00007f3e690c7fac R14: 00007f3e690c7fa0 R15: 00007f3e690c7fa0
[   85.792163][ T4434]  </TASK>
[   85.801444][ T4434] kobject_add_internal failed for cpu0 (error: -12 parent: 0)
[   85.820020][ T4445] 0x000000000000-0x000000010000 : ""
[   85.831516][ T4445] ftl_cs: FTL header not found.
[   85.842477][ T4445] FAULT_INJECTION: forcing a failure.
[   85.842477][ T4445] name failslab, interval 1, probability 0, space 0, times 0
[   85.855703][ T4445] CPU: 0 PID: 4445 Comm: syz.2.33 Not tainted syzkaller #0
[   85.862915][ T4445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   85.872975][ T4445] Call Trace:
[   85.876259][ T4445]  <TASK>
[   85.879194][ T4445]  dump_stack_lvl+0x188/0x250
[   85.883881][ T4445]  ? show_regs_print_info+0x20/0x20
[   85.889080][ T4445]  ? load_image+0x410/0x410
[   85.893588][ T4445]  ? __might_sleep+0xf0/0xf0
[   85.898187][ T4445]  ? __lock_acquire+0x7d40/0x7d40
[   85.903226][ T4445]  should_fail+0x383/0x4b0
[   85.907655][ T4445]  should_failslab+0x5/0x20
[   85.912297][ T4445]  slab_pre_alloc_hook+0x51/0xc0
[   85.917255][ T4445]  ? security_inode_alloc+0x30/0x110
[   85.922529][ T4445]  kmem_cache_alloc+0x3d/0x280
[   85.927301][ T4445]  security_inode_alloc+0x30/0x110
[   85.932411][ T4445]  inode_init_always+0x8e5/0xc90
[   85.937341][ T4445]  new_inode_pseudo+0x8e/0x210
[   85.942109][ T4445]  new_inode+0x25/0x1d0
[   85.946263][ T4445]  ? start_creating+0x1f5/0x310
[   85.951118][ T4445]  __debugfs_create_file+0x147/0x500
[   85.956388][ T4445]  blk_mq_debugfs_register+0xf1/0x7e0
[   85.961755][ T4445]  ? debugfs_create_dir+0x423/0x4c0
[   85.966953][ T4445]  blk_register_queue+0x204/0x3a0
[   85.971970][ T4445]  device_add_disk+0x60f/0xde0
[   85.976736][ T4445]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   85.982019][ T4445]  mtdblock_add_mtd+0x186/0x240
[   85.986865][ T4445]  blktrans_notify_add+0x95/0xe0
[   85.991789][ T4445]  add_mtd_device+0xd40/0x1260
[   85.996560][ T4445]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   86.002364][ T4445]  ? mtd_cls_resume+0x130/0x130
[   86.007225][ T4445]  mtd_add_partition+0x25d/0x420
[   86.012169][ T4445]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   86.017282][ T4445]  ? shrink_ecclayout+0xab0/0xab0
[   86.022322][ T4445]  ? __might_fault+0xb3/0x110
[   86.027001][ T4445]  ? _copy_from_user+0x111/0x170
[   86.031928][ T4445]  mtdchar_ioctl+0x14cb/0x1d70
[   86.036694][ T4445]  ? mtdchar_close+0x180/0x180
[   86.041448][ T4445]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   86.047427][ T4445]  ? verify_lock_unused+0x140/0x140
[   86.052607][ T4445]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   86.058236][ T4445]  ? rcu_lock_release+0x5/0x20
[   86.063010][ T4445]  ? __mutex_trylock_common+0x15c/0x260
[   86.068554][ T4445]  ? rcu_lock_release+0x20/0x20
[   86.073384][ T4445]  ? kasan_quarantine_put+0xd4/0x210
[   86.078648][ T4445]  ? __mutex_lock_common+0x435/0x2400
[   86.084012][ T4445]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   86.089383][ T4445]  ? mutex_lock_io_nested+0x60/0x60
[   86.094565][ T4445]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   86.100530][ T4445]  mtdchar_unlocked_ioctl+0xad/0xd0
[   86.105708][ T4445]  ? mtdchar_write+0x5a0/0x5a0
[   86.110457][ T4445]  __se_sys_ioctl+0xfa/0x170
[   86.115044][ T4445]  do_syscall_64+0x4c/0xa0
[   86.119442][ T4445]  ? clear_bhb_loop+0x30/0x80
[   86.124100][ T4445]  ? clear_bhb_loop+0x30/0x80
[   86.128777][ T4445]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   86.134654][ T4445] RIP: 0033:0x7f36f4c591d9
[   86.139048][ T4445] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   86.158633][ T4445] RSP: 002b:00007ffc5e94ee28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   86.167035][ T4445] RAX: ffffffffffffffda RBX: 00007f36f4ee0fa0 RCX: 00007f36f4c591d9
[   86.174995][ T4445] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   86.182963][ T4445] RBP: 00007f36f4cf0888 R08: 0000000000000000 R09: 0000000000000000
[   86.190934][ T4445] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   86.198895][ T4445] R13: 00007f36f4ee0fac R14: 00007f36f4ee0fa0 R15: 00007f36f4ee0fa0
[   86.206858][ T4445]  </TASK>
[   86.214260][ T4445] debugfs: out of free dentries, can not create file 'requeue_list'
[   86.235086][ T4436] 0x000000000000-0x000000010000 : ""
[   86.247131][ T4436] ftl_cs: FTL header not found.
[   86.273013][ T4436] FAULT_INJECTION: forcing a failure.
[   86.273013][ T4436] name failslab, interval 1, probability 0, space 0, times 0
[   86.285808][ T4436] CPU: 1 PID: 4436 Comm: syz.0.29 Not tainted syzkaller #0
[   86.293008][ T4436] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   86.303049][ T4436] Call Trace:
[   86.306316][ T4436]  <TASK>
[   86.309231][ T4436]  dump_stack_lvl+0x188/0x250
[   86.313897][ T4436]  ? show_regs_print_info+0x20/0x20
[   86.319080][ T4436]  ? load_image+0x410/0x410
[   86.323573][ T4436]  ? __might_sleep+0xf0/0xf0
[   86.328148][ T4436]  ? __lock_acquire+0x7d40/0x7d40
[   86.333157][ T4436]  ? mark_lock+0x94/0x320
[   86.337468][ T4436]  should_fail+0x383/0x4b0
[   86.341873][ T4436]  should_failslab+0x5/0x20
[   86.346357][ T4436]  slab_pre_alloc_hook+0x51/0xc0
[   86.351280][ T4436]  ? __d_alloc+0x27/0x6d0
[   86.355599][ T4436]  kmem_cache_alloc+0x3d/0x280
[   86.360347][ T4436]  __d_alloc+0x27/0x6d0
[   86.364487][ T4436]  d_alloc_parallel+0x7b/0x1320
[   86.369328][ T4436]  ? __init_waitqueue_head+0xa4/0x140
[   86.374683][ T4436]  __lookup_slow+0x134/0x410
[   86.379258][ T4436]  ? lookup_one_len+0x2d0/0x2d0
[   86.384107][ T4436]  lookup_one_len+0x19d/0x2d0
[   86.388767][ T4436]  ? lookup_one_common+0x460/0x460
[   86.393863][ T4436]  ? do_raw_spin_unlock+0x11d/0x230
[   86.399043][ T4436]  ? mntput+0x64/0xc0
[   86.403009][ T4436]  start_creating+0x184/0x310
[   86.407673][ T4436]  __debugfs_create_file+0x6f/0x500
[   86.412857][ T4436]  blk_mq_debugfs_register+0xf1/0x7e0
[   86.418212][ T4436]  ? debugfs_create_dir+0x423/0x4c0
[   86.423400][ T4436]  blk_register_queue+0x204/0x3a0
[   86.428431][ T4436]  device_add_disk+0x60f/0xde0
[   86.433193][ T4436]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   86.438475][ T4436]  mtdblock_add_mtd+0x186/0x240
[   86.443316][ T4436]  blktrans_notify_add+0x95/0xe0
[   86.448246][ T4436]  add_mtd_device+0xd40/0x1260
[   86.453004][ T4436]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   86.458799][ T4436]  ? mtd_cls_resume+0x130/0x130
[   86.463645][ T4436]  mtd_add_partition+0x25d/0x420
[   86.468568][ T4436]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   86.473662][ T4436]  ? shrink_ecclayout+0xab0/0xab0
[   86.478677][ T4436]  ? __might_fault+0xb3/0x110
[   86.483341][ T4436]  ? _copy_from_user+0x111/0x170
[   86.488261][ T4436]  mtdchar_ioctl+0x14cb/0x1d70
[   86.493006][ T4436]  ? lockdep_hardirqs_on+0x94/0x140
[   86.498195][ T4436]  ? mtdchar_close+0x180/0x180
[   86.502943][ T4436]  ? put_task_stack+0x97/0x140
[   86.507687][ T4436]  ? verify_lock_unused+0x140/0x140
[   86.512868][ T4436]  ? finish_task_switch+0x26f/0x650
[   86.518051][ T4436]  ? __schedule+0x11cb/0x4350
[   86.522715][ T4436]  ? rcu_lock_acquire+0x30/0x30
[   86.527558][ T4436]  ? __mutex_lock_common+0x1471/0x2400
[   86.533003][ T4436]  ? __lock_acquire+0x7d40/0x7d40
[   86.538010][ T4436]  ? do_raw_spin_lock+0x128/0x2f0
[   86.543016][ T4436]  ? __rwlock_init+0x140/0x140
[   86.547763][ T4436]  ? do_raw_spin_unlock+0x11d/0x230
[   86.552944][ T4436]  ? __mutex_lock_common+0x147b/0x2400
[   86.558390][ T4436]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   86.563746][ T4436]  ? mutex_lock_io_nested+0x60/0x60
[   86.568930][ T4436]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   86.574904][ T4436]  mtdchar_unlocked_ioctl+0xad/0xd0
[   86.580085][ T4436]  ? mtdchar_write+0x5a0/0x5a0
[   86.584831][ T4436]  __se_sys_ioctl+0xfa/0x170
[   86.589407][ T4436]  do_syscall_64+0x4c/0xa0
[   86.593808][ T4436]  ? clear_bhb_loop+0x30/0x80
[   86.598481][ T4436]  ? clear_bhb_loop+0x30/0x80
[   86.603159][ T4436]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   86.609054][ T4436] RIP: 0033:0x7fe1100aa1d9
[   86.613470][ T4436] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   86.633059][ T4436] RSP: 002b:00007ffcacef5708 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   86.641461][ T4436] RAX: ffffffffffffffda RBX: 00007fe110331fa0 RCX: 00007fe1100aa1d9
[   86.649417][ T4436] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   86.657368][ T4436] RBP: 00007fe110141888 R08: 0000000000000000 R09: 0000000000000000
[   86.665324][ T4436] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   86.673275][ T4436] R13: 00007fe110331fac R14: 00007fe110331fa0 R15: 00007fe110331fa0
[   86.681242][ T4436]  </TASK>
[   86.715193][ T4450] 0x000000000000-0x000000010000 : ""
[   86.740996][ T4450] ftl_cs: FTL header not found.
[   86.765813][ T4450] FAULT_INJECTION: forcing a failure.
[   86.765813][ T4450] name failslab, interval 1, probability 0, space 0, times 0
[   86.784788][ T4450] CPU: 1 PID: 4450 Comm: syz.2.35 Not tainted syzkaller #0
[   86.792011][ T4450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   86.802066][ T4450] Call Trace:
[   86.805345][ T4450]  <TASK>
[   86.808273][ T4450]  dump_stack_lvl+0x188/0x250
[   86.812953][ T4450]  ? show_regs_print_info+0x20/0x20
[   86.818150][ T4450]  ? load_image+0x410/0x410
[   86.822655][ T4450]  ? __might_sleep+0xf0/0xf0
[   86.827243][ T4450]  ? __lock_acquire+0x7d40/0x7d40
[   86.832279][ T4450]  should_fail+0x383/0x4b0
[   86.836716][ T4450]  should_failslab+0x5/0x20
[   86.841217][ T4450]  slab_pre_alloc_hook+0x51/0xc0
[   86.846158][ T4450]  ? __kernfs_new_node+0xe3/0x6b0
[   86.851189][ T4450]  kmem_cache_alloc+0x3d/0x280
[   86.855958][ T4450]  __kernfs_new_node+0xe3/0x6b0
[   86.860817][ T4450]  ? kernfs_new_node+0x250/0x250
[   86.865763][ T4450]  ? pointer+0xc60/0xc60
[   86.870012][ T4450]  ? format_decode+0xb38/0x1330
[   86.874875][ T4450]  kernfs_new_node+0x148/0x250
[   86.879647][ T4450]  kernfs_create_dir_ns+0x40/0x120
[   86.884762][ T4450]  sysfs_create_dir_ns+0x12c/0x290
[   86.889874][ T4450]  ? sysfs_warn_dup+0xa0/0xa0
[   86.894548][ T4450]  ? sysfs_create_dir_ns+0x167/0x290
[   86.899837][ T4450]  ? rcu_is_watching+0x11/0xa0
[   86.904600][ T4450]  ? kobject_set_name_vargs+0xc6/0x110
[   86.910059][ T4450]  kobject_add_internal+0x5ba/0xcd0
[   86.915263][ T4450]  kobject_add+0x160/0x230
[   86.919687][ T4450]  ? kobject_init+0x1c0/0x1c0
[   86.924366][ T4450]  ? kobject_init+0x1c0/0x1c0
[   86.929038][ T4450]  ? dev_uevent_filter+0x3f/0xb0
[   86.933986][ T4450]  blk_mq_register_hctx+0x1d5/0x400
[   86.939188][ T4450]  __blk_mq_register_dev+0x206/0x640
[   86.944479][ T4450]  ? debugfs_create_dir+0x423/0x4c0
[   86.949684][ T4450]  blk_register_queue+0x1fc/0x3a0
[   86.954713][ T4450]  device_add_disk+0x60f/0xde0
[   86.959489][ T4450]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   86.964784][ T4450]  mtdblock_add_mtd+0x186/0x240
[   86.969634][ T4450]  blktrans_notify_add+0x95/0xe0
[   86.974568][ T4450]  add_mtd_device+0xd40/0x1260
[   86.979342][ T4450]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   86.985153][ T4450]  ? mtd_cls_resume+0x130/0x130
[   86.990024][ T4450]  mtd_add_partition+0x25d/0x420
[   86.994973][ T4450]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   87.000095][ T4450]  ? shrink_ecclayout+0xab0/0xab0
[   87.005136][ T4450]  ? __might_fault+0xb3/0x110
[   87.009815][ T4450]  ? _copy_from_user+0x111/0x170
[   87.014755][ T4450]  mtdchar_ioctl+0x14cb/0x1d70
[   87.019521][ T4450]  ? mtdchar_close+0x180/0x180
[   87.024294][ T4450]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   87.030304][ T4450]  ? verify_lock_unused+0x140/0x140
[   87.035511][ T4450]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   87.041148][ T4450]  ? rcu_lock_release+0x5/0x20
[   87.045937][ T4450]  ? __mutex_trylock_common+0x15c/0x260
[   87.051489][ T4450]  ? rcu_lock_release+0x20/0x20
[   87.056347][ T4450]  ? kasan_quarantine_put+0xd4/0x210
[   87.061637][ T4450]  ? __mutex_lock_common+0x435/0x2400
[   87.067016][ T4450]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   87.072389][ T4450]  ? mutex_lock_io_nested+0x60/0x60
[   87.077594][ T4450]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   87.083584][ T4450]  mtdchar_unlocked_ioctl+0xad/0xd0
[   87.088784][ T4450]  ? mtdchar_write+0x5a0/0x5a0
[   87.093545][ T4450]  __se_sys_ioctl+0xfa/0x170
[   87.098138][ T4450]  do_syscall_64+0x4c/0xa0
[   87.102552][ T4450]  ? clear_bhb_loop+0x30/0x80
[   87.107231][ T4450]  ? clear_bhb_loop+0x30/0x80
[   87.111910][ T4450]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   87.117800][ T4450] RIP: 0033:0x7f36f4c591d9
[   87.122213][ T4450] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   87.141815][ T4450] RSP: 002b:00007ffc5e94ee28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   87.150231][ T4450] RAX: ffffffffffffffda RBX: 00007f36f4ee0fa0 RCX: 00007f36f4c591d9
[   87.158205][ T4450] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   87.166172][ T4450] RBP: 00007f36f4cf0888 R08: 0000000000000000 R09: 0000000000000000
[   87.174139][ T4450] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   87.182106][ T4450] R13: 00007f36f4ee0fac R14: 00007f36f4ee0fa0 R15: 00007f36f4ee0fa0
[   87.190088][ T4450]  </TASK>
[   87.211575][ T4450] kobject_add_internal failed for cpu0 (error: -12 parent: 0)
[   87.238696][ T4441] 0x000000000000-0x000000010000 : ""
[   87.259235][ T4441] ftl_cs: FTL header not found.
[   87.271090][ T4441] FAULT_INJECTION: forcing a failure.
[   87.271090][ T4441] name failslab, interval 1, probability 0, space 0, times 0
[   87.289368][ T4441] CPU: 1 PID: 4441 Comm: syz.1.31 Not tainted syzkaller #0
[   87.296589][ T4441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   87.306648][ T4441] Call Trace:
[   87.309929][ T4441]  <TASK>
[   87.312882][ T4441]  dump_stack_lvl+0x188/0x250
[   87.317568][ T4441]  ? show_regs_print_info+0x20/0x20
[   87.322765][ T4441]  ? load_image+0x410/0x410
[   87.327276][ T4441]  ? __lock_acquire+0x7d40/0x7d40
[   87.332305][ T4441]  should_fail+0x383/0x4b0
[   87.336726][ T4441]  should_failslab+0x5/0x20
[   87.341226][ T4441]  slab_pre_alloc_hook+0x51/0xc0
[   87.346169][ T4441]  ? kobject_set_name_vargs+0x5d/0x110
[   87.351626][ T4441]  __kmalloc_track_caller+0x69/0x330
[   87.356908][ T4441]  ? kobject_set_name_vargs+0x5d/0x110
[   87.362372][ T4441]  kvasprintf+0xe3/0x1a0
[   87.366611][ T4441]  ? bust_spinlocks+0xd0/0xd0
[   87.371279][ T4441]  ? sysfs_create_dir_ns+0x167/0x290
[   87.376565][ T4441]  ? rcu_is_watching+0x11/0xa0
[   87.381330][ T4441]  ? kvasprintf_const+0xdd/0x240
[   87.386270][ T4441]  kobject_set_name_vargs+0x5d/0x110
[   87.391556][ T4441]  kobject_add+0x11e/0x230
[   87.395978][ T4441]  ? kobject_init+0x1c0/0x1c0
[   87.400655][ T4441]  ? kobject_init+0x1c0/0x1c0
[   87.405325][ T4441]  ? dev_uevent_filter+0x3f/0xb0
[   87.410263][ T4441]  blk_mq_register_hctx+0x1d5/0x400
[   87.415467][ T4441]  __blk_mq_register_dev+0x206/0x640
[   87.420750][ T4441]  ? debugfs_create_dir+0x423/0x4c0
[   87.425950][ T4441]  blk_register_queue+0x1fc/0x3a0
[   87.430979][ T4441]  device_add_disk+0x60f/0xde0
[   87.435751][ T4441]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   87.441039][ T4441]  mtdblock_add_mtd+0x186/0x240
[   87.445889][ T4441]  blktrans_notify_add+0x95/0xe0
[   87.450832][ T4441]  add_mtd_device+0xd40/0x1260
[   87.455608][ T4441]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   87.461421][ T4441]  ? mtd_cls_resume+0x130/0x130
[   87.466291][ T4441]  mtd_add_partition+0x25d/0x420
[   87.471238][ T4441]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   87.476349][ T4441]  ? shrink_ecclayout+0xab0/0xab0
[   87.481387][ T4441]  ? __might_fault+0xb3/0x110
[   87.486066][ T4441]  ? _copy_from_user+0x111/0x170
[   87.491002][ T4441]  mtdchar_ioctl+0x14cb/0x1d70
[   87.495771][ T4441]  ? lockdep_hardirqs_on+0x94/0x140
[   87.500973][ T4441]  ? mtdchar_close+0x180/0x180
[   87.505741][ T4441]  ? put_task_stack+0x97/0x140
[   87.510502][ T4441]  ? verify_lock_unused+0x140/0x140
[   87.515697][ T4441]  ? finish_task_switch+0x26f/0x650
[   87.520898][ T4441]  ? __schedule+0x11cb/0x4350
[   87.525570][ T4441]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   87.531228][ T4441]  ? rcu_lock_acquire+0x30/0x30
[   87.536110][ T4441]  ? __mutex_lock_common+0x1471/0x2400
[   87.541571][ T4441]  ? __lock_acquire+0x7d40/0x7d40
[   87.546593][ T4441]  ? do_raw_spin_lock+0x128/0x2f0
[   87.551623][ T4441]  ? __rwlock_init+0x140/0x140
[   87.556386][ T4441]  ? do_raw_spin_unlock+0x11d/0x230
[   87.561587][ T4441]  ? __mutex_lock_common+0x147b/0x2400
[   87.567052][ T4441]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   87.572424][ T4441]  ? mutex_lock_io_nested+0x60/0x60
[   87.577626][ T4441]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   87.583617][ T4441]  mtdchar_unlocked_ioctl+0xad/0xd0
[   87.588811][ T4441]  ? mtdchar_write+0x5a0/0x5a0
[   87.593571][ T4441]  __se_sys_ioctl+0xfa/0x170
[   87.598175][ T4441]  do_syscall_64+0x4c/0xa0
[   87.602599][ T4441]  ? clear_bhb_loop+0x30/0x80
[   87.607276][ T4441]  ? clear_bhb_loop+0x30/0x80
[   87.611958][ T4441]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   87.617852][ T4441] RIP: 0033:0x7fef503c01d9
[   87.622270][ T4441] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   87.641876][ T4441] RSP: 002b:00007fffed71d8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   87.650297][ T4441] RAX: ffffffffffffffda RBX: 00007fef50647fa0 RCX: 00007fef503c01d9
[   87.658269][ T4441] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   87.666243][ T4441] RBP: 00007fef50457888 R08: 0000000000000000 R09: 0000000000000000
[   87.674215][ T4441] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   87.682184][ T4441] R13: 00007fef50647fac R14: 00007fef50647fa0 R15: 00007fef50647fa0
[   87.690164][ T4441]  </TASK>
[   87.705453][ T4441] kobject: can not set name properly!
[   87.742047][ T4443] 0x000000000000-0x000000010000 : ""
[   87.766156][ T4443] ftl_cs: FTL header not found.
[   87.783069][ T4443] FAULT_INJECTION: forcing a failure.
[   87.783069][ T4443] name failslab, interval 1, probability 0, space 0, times 0
[   87.812774][ T4443] CPU: 0 PID: 4443 Comm: syz.4.32 Not tainted syzkaller #0
[   87.820002][ T4443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   87.830045][ T4443] Call Trace:
[   87.833311][ T4443]  <TASK>
[   87.836254][ T4443]  dump_stack_lvl+0x188/0x250
[   87.840916][ T4443]  ? show_regs_print_info+0x20/0x20
[   87.846094][ T4443]  ? load_image+0x410/0x410
[   87.850580][ T4443]  ? __lock_acquire+0x7d40/0x7d40
[   87.855614][ T4443]  should_fail+0x383/0x4b0
[   87.860026][ T4443]  should_failslab+0x5/0x20
[   87.864514][ T4443]  slab_pre_alloc_hook+0x51/0xc0
[   87.869432][ T4443]  ? new_inode_pseudo+0x77/0x210
[   87.874361][ T4443]  kmem_cache_alloc+0x3d/0x280
[   87.879116][ T4443]  new_inode_pseudo+0x77/0x210
[   87.883865][ T4443]  new_inode+0x25/0x1d0
[   87.888023][ T4443]  ? start_creating+0x1f5/0x310
[   87.892861][ T4443]  __debugfs_create_file+0x147/0x500
[   87.898137][ T4443]  blk_mq_debugfs_register+0xf1/0x7e0
[   87.903514][ T4443]  ? debugfs_create_dir+0x423/0x4c0
[   87.908695][ T4443]  blk_register_queue+0x204/0x3a0
[   87.913716][ T4443]  device_add_disk+0x60f/0xde0
[   87.918487][ T4443]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   87.923757][ T4443]  mtdblock_add_mtd+0x186/0x240
[   87.928591][ T4443]  blktrans_notify_add+0x95/0xe0
[   87.933510][ T4443]  add_mtd_device+0xd40/0x1260
[   87.938261][ T4443]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   87.944051][ T4443]  ? mtd_cls_resume+0x130/0x130
[   87.948901][ T4443]  mtd_add_partition+0x25d/0x420
[   87.953836][ T4443]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   87.958945][ T4443]  ? shrink_ecclayout+0xab0/0xab0
[   87.963958][ T4443]  ? __might_fault+0xb3/0x110
[   87.968631][ T4443]  ? _copy_from_user+0x111/0x170
[   87.973576][ T4443]  mtdchar_ioctl+0x14cb/0x1d70
[   87.978319][ T4443]  ? lock_chain_count+0x20/0x20
[   87.983155][ T4443]  ? mtdchar_close+0x180/0x180
[   87.987902][ T4443]  ? finish_lock_switch+0x12d/0x290
[   87.993081][ T4443]  ? verify_lock_unused+0x140/0x140
[   87.998276][ T4443]  ? finish_task_switch+0x1e4/0x650
[   88.003457][ T4443]  ? __schedule+0x11cb/0x4350
[   88.008112][ T4443]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   88.013734][ T4443]  ? rcu_lock_acquire+0x30/0x30
[   88.018570][ T4443]  ? __mutex_lock_common+0x1471/0x2400
[   88.024022][ T4443]  ? __lock_acquire+0x7d40/0x7d40
[   88.029070][ T4443]  ? do_raw_spin_lock+0x128/0x2f0
[   88.034078][ T4443]  ? __rwlock_init+0x140/0x140
[   88.038827][ T4443]  ? do_raw_spin_unlock+0x11d/0x230
[   88.044006][ T4443]  ? __mutex_lock_common+0x147b/0x2400
[   88.049448][ T4443]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   88.054804][ T4443]  ? mutex_lock_io_nested+0x60/0x60
[   88.059989][ T4443]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   88.065957][ T4443]  mtdchar_unlocked_ioctl+0xad/0xd0
[   88.071136][ T4443]  ? mtdchar_write+0x5a0/0x5a0
[   88.075879][ T4443]  __se_sys_ioctl+0xfa/0x170
[   88.080456][ T4443]  do_syscall_64+0x4c/0xa0
[   88.084867][ T4443]  ? clear_bhb_loop+0x30/0x80
[   88.089522][ T4443]  ? clear_bhb_loop+0x30/0x80
[   88.094191][ T4443]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   88.100064][ T4443] RIP: 0033:0x7f4f307f11d9
[   88.104457][ T4443] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   88.124048][ T4443] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   88.132447][ T4443] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   88.140413][ T4443] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   88.148363][ T4443] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   88.156313][ T4443] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   88.164263][ T4443] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   88.172228][ T4443]  </TASK>
[   88.183792][ T4443] debugfs: out of free dentries, can not create file 'requeue_list'
[   88.204005][ T4455] 0x000000000000-0x000000010000 : ""
[   88.224003][ T4455] ftl_cs: FTL header not found.
[   88.236117][ T4455] FAULT_INJECTION: forcing a failure.
[   88.236117][ T4455] name failslab, interval 1, probability 0, space 0, times 0
[   88.259436][ T4455] CPU: 1 PID: 4455 Comm: syz.2.37 Not tainted syzkaller #0
[   88.266664][ T4455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   88.276734][ T4455] Call Trace:
[   88.280011][ T4455]  <TASK>
[   88.282937][ T4455]  dump_stack_lvl+0x188/0x250
[   88.287627][ T4455]  ? show_regs_print_info+0x20/0x20
[   88.292855][ T4455]  ? load_image+0x410/0x410
[   88.297367][ T4455]  ? __might_sleep+0xf0/0xf0
[   88.301955][ T4455]  ? __lock_acquire+0x7d40/0x7d40
[   88.306987][ T4455]  should_fail+0x383/0x4b0
[   88.311406][ T4455]  should_failslab+0x5/0x20
[   88.315905][ T4455]  slab_pre_alloc_hook+0x51/0xc0
[   88.320842][ T4455]  ? security_inode_alloc+0x30/0x110
[   88.326123][ T4455]  kmem_cache_alloc+0x3d/0x280
[   88.330883][ T4455]  security_inode_alloc+0x30/0x110
[   88.335982][ T4455]  inode_init_always+0x8e5/0xc90
[   88.340905][ T4455]  new_inode_pseudo+0x8e/0x210
[   88.345652][ T4455]  new_inode+0x25/0x1d0
[   88.349790][ T4455]  ? start_creating+0x1f5/0x310
[   88.354624][ T4455]  __debugfs_create_file+0x147/0x500
[   88.359899][ T4455]  blk_mq_debugfs_register+0xf1/0x7e0
[   88.365258][ T4455]  ? debugfs_create_dir+0x423/0x4c0
[   88.370442][ T4455]  blk_register_queue+0x204/0x3a0
[   88.375453][ T4455]  device_add_disk+0x60f/0xde0
[   88.380205][ T4455]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   88.385479][ T4455]  mtdblock_add_mtd+0x186/0x240
[   88.390313][ T4455]  blktrans_notify_add+0x95/0xe0
[   88.395231][ T4455]  add_mtd_device+0xd40/0x1260
[   88.399989][ T4455]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   88.405781][ T4455]  ? mtd_cls_resume+0x130/0x130
[   88.410630][ T4455]  mtd_add_partition+0x25d/0x420
[   88.415557][ T4455]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   88.420651][ T4455]  ? shrink_ecclayout+0xab0/0xab0
[   88.425670][ T4455]  ? __might_fault+0xb3/0x110
[   88.430332][ T4455]  ? _copy_from_user+0x111/0x170
[   88.435251][ T4455]  mtdchar_ioctl+0x14cb/0x1d70
[   88.440001][ T4455]  ? mtdchar_close+0x180/0x180
[   88.444751][ T4455]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   88.450718][ T4455]  ? verify_lock_unused+0x140/0x140
[   88.455902][ T4455]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   88.461519][ T4455]  ? rcu_lock_release+0x5/0x20
[   88.466283][ T4455]  ? __mutex_trylock_common+0x15c/0x260
[   88.471811][ T4455]  ? rcu_lock_release+0x20/0x20
[   88.476644][ T4455]  ? kasan_quarantine_put+0xd4/0x210
[   88.481914][ T4455]  ? __mutex_lock_common+0x435/0x2400
[   88.487276][ T4455]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   88.492631][ T4455]  ? mutex_lock_io_nested+0x60/0x60
[   88.497817][ T4455]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   88.503785][ T4455]  mtdchar_unlocked_ioctl+0xad/0xd0
[   88.508965][ T4455]  ? mtdchar_write+0x5a0/0x5a0
[   88.513710][ T4455]  __se_sys_ioctl+0xfa/0x170
[   88.518287][ T4455]  do_syscall_64+0x4c/0xa0
[   88.522685][ T4455]  ? clear_bhb_loop+0x30/0x80
[   88.527344][ T4455]  ? clear_bhb_loop+0x30/0x80
[   88.532004][ T4455]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   88.537879][ T4455] RIP: 0033:0x7f36f4c591d9
[   88.542278][ T4455] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   88.561865][ T4455] RSP: 002b:00007ffc5e94ee28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   88.570261][ T4455] RAX: ffffffffffffffda RBX: 00007f36f4ee0fa0 RCX: 00007f36f4c591d9
[   88.578214][ T4455] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   88.586164][ T4455] RBP: 00007f36f4cf0888 R08: 0000000000000000 R09: 0000000000000000
[   88.594114][ T4455] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   88.602070][ T4455] R13: 00007f36f4ee0fac R14: 00007f36f4ee0fa0 R15: 00007f36f4ee0fa0
[   88.610034][ T4455]  </TASK>
[   88.617208][ T4455] debugfs: out of free dentries, can not create file 'requeue_list'
2026/10/09 05:47:03 executed programs: 32
[   88.641430][ T4448] 0x000000000000-0x000000010000 : ""
[   88.661012][ T4448] ftl_cs: FTL header not found.
[   88.674827][ T4448] FAULT_INJECTION: forcing a failure.
[   88.674827][ T4448] name failslab, interval 1, probability 0, space 0, times 0
[   88.694518][ T4448] CPU: 1 PID: 4448 Comm: syz.3.34 Not tainted syzkaller #0
[   88.701746][ T4448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   88.711799][ T4448] Call Trace:
[   88.715084][ T4448]  <TASK>
[   88.718009][ T4448]  dump_stack_lvl+0x188/0x250
[   88.722685][ T4448]  ? show_regs_print_info+0x20/0x20
[   88.727874][ T4448]  ? load_image+0x410/0x410
[   88.732368][ T4448]  ? __might_sleep+0xf0/0xf0
[   88.736948][ T4448]  ? __lock_acquire+0x7d40/0x7d40
[   88.741962][ T4448]  ? mark_lock+0x94/0x320
[   88.746284][ T4448]  should_fail+0x383/0x4b0
[   88.750697][ T4448]  should_failslab+0x5/0x20
[   88.755192][ T4448]  slab_pre_alloc_hook+0x51/0xc0
[   88.760114][ T4448]  ? __d_alloc+0x27/0x6d0
[   88.764422][ T4448]  kmem_cache_alloc+0x3d/0x280
[   88.769169][ T4448]  __d_alloc+0x27/0x6d0
[   88.773321][ T4448]  d_alloc_parallel+0x7b/0x1320
[   88.778177][ T4448]  ? __init_waitqueue_head+0xa4/0x140
[   88.783537][ T4448]  __lookup_slow+0x134/0x410
[   88.788107][ T4448]  ? lookup_one_len+0x2d0/0x2d0
[   88.792947][ T4448]  lookup_one_len+0x19d/0x2d0
[   88.797624][ T4448]  ? lookup_one_common+0x460/0x460
[   88.802714][ T4448]  ? do_raw_spin_unlock+0x11d/0x230
[   88.807891][ T4448]  ? mntput+0x64/0xc0
[   88.811856][ T4448]  start_creating+0x184/0x310
[   88.816512][ T4448]  __debugfs_create_file+0x6f/0x500
[   88.821698][ T4448]  blk_mq_debugfs_register+0x113/0x7e0
[   88.827148][ T4448]  ? debugfs_create_dir+0x423/0x4c0
[   88.832335][ T4448]  blk_register_queue+0x204/0x3a0
[   88.837349][ T4448]  device_add_disk+0x60f/0xde0
[   88.842097][ T4448]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   88.847380][ T4448]  mtdblock_add_mtd+0x186/0x240
[   88.852231][ T4448]  blktrans_notify_add+0x95/0xe0
[   88.857154][ T4448]  add_mtd_device+0xd40/0x1260
[   88.861904][ T4448]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   88.867693][ T4448]  ? mtd_cls_resume+0x130/0x130
[   88.872535][ T4448]  mtd_add_partition+0x25d/0x420
[   88.877458][ T4448]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   88.882557][ T4448]  ? shrink_ecclayout+0xab0/0xab0
[   88.887567][ T4448]  ? __might_fault+0xb3/0x110
[   88.892222][ T4448]  ? _copy_from_user+0x111/0x170
[   88.897138][ T4448]  mtdchar_ioctl+0x14cb/0x1d70
[   88.901884][ T4448]  ? lock_chain_count+0x20/0x20
[   88.906720][ T4448]  ? mtdchar_close+0x180/0x180
[   88.911464][ T4448]  ? finish_lock_switch+0x12d/0x290
[   88.916637][ T4448]  ? verify_lock_unused+0x140/0x140
[   88.921813][ T4448]  ? finish_task_switch+0x1e4/0x650
[   88.926994][ T4448]  ? __schedule+0x11cb/0x4350
[   88.931646][ T4448]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   88.937271][ T4448]  ? rcu_lock_acquire+0x30/0x30
[   88.942098][ T4448]  ? __mutex_lock_common+0x1471/0x2400
[   88.947552][ T4448]  ? __lock_acquire+0x7d40/0x7d40
[   88.952554][ T4448]  ? do_raw_spin_lock+0x128/0x2f0
[   88.957559][ T4448]  ? __rwlock_init+0x140/0x140
[   88.962313][ T4448]  ? do_raw_spin_unlock+0x11d/0x230
[   88.967488][ T4448]  ? __mutex_lock_common+0x147b/0x2400
[   88.972928][ T4448]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   88.978291][ T4448]  ? mutex_lock_io_nested+0x60/0x60
[   88.983493][ T4448]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   88.989457][ T4448]  mtdchar_unlocked_ioctl+0xad/0xd0
[   88.994632][ T4448]  ? mtdchar_write+0x5a0/0x5a0
[   88.999576][ T4448]  __se_sys_ioctl+0xfa/0x170
[   89.004146][ T4448]  do_syscall_64+0x4c/0xa0
[   89.008542][ T4448]  ? clear_bhb_loop+0x30/0x80
[   89.013199][ T4448]  ? clear_bhb_loop+0x30/0x80
[   89.017874][ T4448]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   89.023764][ T4448] RIP: 0033:0x7f3e68e401d9
[   89.028173][ T4448] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   89.047754][ T4448] RSP: 002b:00007ffd0098da68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   89.056146][ T4448] RAX: ffffffffffffffda RBX: 00007f3e690c7fa0 RCX: 00007f3e68e401d9
[   89.064102][ T4448] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   89.072078][ T4448] RBP: 00007f3e68ed7888 R08: 0000000000000000 R09: 0000000000000000
[   89.080033][ T4448] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   89.087998][ T4448] R13: 00007f3e690c7fac R14: 00007f3e690c7fa0 R15: 00007f3e690c7fa0
[   89.095959][ T4448]  </TASK>
[   89.121646][ T4452] 0x000000000000-0x000000010000 : ""
[   89.144111][ T4452] ftl_cs: FTL header not found.
[   89.156777][ T4452] FAULT_INJECTION: forcing a failure.
[   89.156777][ T4452] name failslab, interval 1, probability 0, space 0, times 0
[   89.170956][ T4452] CPU: 1 PID: 4452 Comm: syz.0.36 Not tainted syzkaller #0
[   89.178173][ T4452] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   89.188227][ T4452] Call Trace:
[   89.191491][ T4452]  <TASK>
[   89.194403][ T4452]  dump_stack_lvl+0x188/0x250
[   89.199067][ T4452]  ? show_regs_print_info+0x20/0x20
[   89.204247][ T4452]  ? load_image+0x410/0x410
[   89.208730][ T4452]  ? __lock_acquire+0x7d40/0x7d40
[   89.213735][ T4452]  should_fail+0x383/0x4b0
[   89.218135][ T4452]  should_failslab+0x5/0x20
[   89.222624][ T4452]  slab_pre_alloc_hook+0x51/0xc0
[   89.227574][ T4452]  ? new_inode_pseudo+0x77/0x210
[   89.232514][ T4452]  kmem_cache_alloc+0x3d/0x280
[   89.237291][ T4452]  new_inode_pseudo+0x77/0x210
[   89.242041][ T4452]  new_inode+0x25/0x1d0
[   89.246177][ T4452]  ? start_creating+0x1f5/0x310
[   89.251007][ T4452]  __debugfs_create_file+0x147/0x500
[   89.256281][ T4452]  blk_mq_debugfs_register+0xcf/0x7e0
[   89.261638][ T4452]  ? debugfs_create_dir+0x423/0x4c0
[   89.266816][ T4452]  blk_register_queue+0x204/0x3a0
[   89.271832][ T4452]  device_add_disk+0x60f/0xde0
[   89.276599][ T4452]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   89.281873][ T4452]  mtdblock_add_mtd+0x186/0x240
[   89.286706][ T4452]  blktrans_notify_add+0x95/0xe0
[   89.291627][ T4452]  add_mtd_device+0xd40/0x1260
[   89.296383][ T4452]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   89.302177][ T4452]  ? mtd_cls_resume+0x130/0x130
[   89.307034][ T4452]  mtd_add_partition+0x25d/0x420
[   89.311956][ T4452]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   89.317049][ T4452]  ? shrink_ecclayout+0xab0/0xab0
[   89.322079][ T4452]  ? __might_fault+0xb3/0x110
[   89.326756][ T4452]  ? _copy_from_user+0x111/0x170
[   89.331684][ T4452]  mtdchar_ioctl+0x14cb/0x1d70
[   89.336442][ T4452]  ? lock_chain_count+0x20/0x20
[   89.341273][ T4452]  ? mtdchar_close+0x180/0x180
[   89.346021][ T4452]  ? finish_lock_switch+0x12d/0x290
[   89.351199][ T4452]  ? verify_lock_unused+0x140/0x140
[   89.356395][ T4452]  ? finish_task_switch+0x12f/0x650
[   89.361574][ T4452]  ? __schedule+0x11cb/0x4350
[   89.366253][ T4452]  ? rcu_lock_acquire+0x30/0x30
[   89.371089][ T4452]  ? release_firmware_map_entry+0x190/0x190
[   89.376961][ T4452]  ? __mutex_lock_common+0x1471/0x2400
[   89.382401][ T4452]  ? __lock_acquire+0x7d40/0x7d40
[   89.387408][ T4452]  ? do_raw_spin_lock+0x128/0x2f0
[   89.392435][ T4452]  ? __rwlock_init+0x140/0x140
[   89.397185][ T4452]  ? do_raw_spin_unlock+0x11d/0x230
[   89.402364][ T4452]  ? __mutex_lock_common+0x147b/0x2400
[   89.407808][ T4452]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   89.413162][ T4452]  ? mutex_lock_io_nested+0x60/0x60
[   89.418343][ T4452]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   89.424316][ T4452]  mtdchar_unlocked_ioctl+0xad/0xd0
[   89.429511][ T4452]  ? mtdchar_write+0x5a0/0x5a0
[   89.434253][ T4452]  __se_sys_ioctl+0xfa/0x170
[   89.438828][ T4452]  do_syscall_64+0x4c/0xa0
[   89.443222][ T4452]  ? clear_bhb_loop+0x30/0x80
[   89.447877][ T4452]  ? clear_bhb_loop+0x30/0x80
[   89.452531][ T4452]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   89.458403][ T4452] RIP: 0033:0x7fe1100aa1d9
[   89.462798][ T4452] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   89.482382][ T4452] RSP: 002b:00007ffcacef5708 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   89.490786][ T4452] RAX: ffffffffffffffda RBX: 00007fe110331fa0 RCX: 00007fe1100aa1d9
[   89.498741][ T4452] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   89.506694][ T4452] RBP: 00007fe110141888 R08: 0000000000000000 R09: 0000000000000000
[   89.514644][ T4452] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   89.522600][ T4452] R13: 00007fe110331fac R14: 00007fe110331fa0 R15: 00007fe110331fa0
[   89.530597][ T4452]  </TASK>
[   89.537870][ T4452] debugfs: out of free dentries, can not create file 'poll_stat'
[   89.557591][ T4460] 0x000000000000-0x000000010000 : ""
[   89.565975][ T4460] ftl_cs: FTL header not found.
[   89.582456][ T4460] FAULT_INJECTION: forcing a failure.
[   89.582456][ T4460] name failslab, interval 1, probability 0, space 0, times 0
[   89.602199][ T4460] CPU: 0 PID: 4460 Comm: syz.4.39 Not tainted syzkaller #0
[   89.609429][ T4460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   89.619479][ T4460] Call Trace:
[   89.622744][ T4460]  <TASK>
[   89.625655][ T4460]  dump_stack_lvl+0x188/0x250
[   89.630315][ T4460]  ? show_regs_print_info+0x20/0x20
[   89.635516][ T4460]  ? load_image+0x410/0x410
[   89.639999][ T4460]  ? __might_sleep+0xf0/0xf0
[   89.644599][ T4460]  ? __lock_acquire+0x7d40/0x7d40
[   89.649787][ T4460]  ? mark_lock+0x94/0x320
[   89.654111][ T4460]  should_fail+0x383/0x4b0
[   89.658538][ T4460]  should_failslab+0x5/0x20
[   89.663044][ T4460]  slab_pre_alloc_hook+0x51/0xc0
[   89.667987][ T4460]  ? __d_alloc+0x27/0x6d0
[   89.672308][ T4460]  kmem_cache_alloc+0x3d/0x280
[   89.677062][ T4460]  __d_alloc+0x27/0x6d0
[   89.681205][ T4460]  d_alloc_parallel+0x7b/0x1320
[   89.686056][ T4460]  ? __init_waitqueue_head+0xa4/0x140
[   89.691415][ T4460]  __lookup_slow+0x134/0x410
[   89.695992][ T4460]  ? lookup_one_len+0x2d0/0x2d0
[   89.700836][ T4460]  lookup_one_len+0x19d/0x2d0
[   89.705500][ T4460]  ? lookup_one_common+0x460/0x460
[   89.710591][ T4460]  ? do_raw_spin_unlock+0x11d/0x230
[   89.715772][ T4460]  ? mntput+0x64/0xc0
[   89.719741][ T4460]  start_creating+0x184/0x310
[   89.724401][ T4460]  __debugfs_create_file+0x6f/0x500
[   89.729583][ T4460]  blk_mq_debugfs_register+0xf1/0x7e0
[   89.734941][ T4460]  ? debugfs_create_dir+0x423/0x4c0
[   89.740127][ T4460]  blk_register_queue+0x204/0x3a0
[   89.745146][ T4460]  device_add_disk+0x60f/0xde0
[   89.749921][ T4460]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   89.755194][ T4460]  mtdblock_add_mtd+0x186/0x240
[   89.760027][ T4460]  blktrans_notify_add+0x95/0xe0
[   89.764943][ T4460]  add_mtd_device+0xd40/0x1260
[   89.769699][ T4460]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   89.775487][ T4460]  ? mtd_cls_resume+0x130/0x130
[   89.780328][ T4460]  mtd_add_partition+0x25d/0x420
[   89.785252][ T4460]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   89.790343][ T4460]  ? shrink_ecclayout+0xab0/0xab0
[   89.795354][ T4460]  ? __might_fault+0xb3/0x110
[   89.800020][ T4460]  ? _copy_from_user+0x111/0x170
[   89.804944][ T4460]  mtdchar_ioctl+0x14cb/0x1d70
[   89.809691][ T4460]  ? mtdchar_close+0x180/0x180
[   89.814435][ T4460]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   89.820396][ T4460]  ? verify_lock_unused+0x140/0x140
[   89.825593][ T4460]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   89.831210][ T4460]  ? rcu_lock_release+0x5/0x20
[   89.835980][ T4460]  ? __mutex_trylock_common+0x15c/0x260
[   89.841524][ T4460]  ? rcu_lock_release+0x20/0x20
[   89.846353][ T4460]  ? kasan_quarantine_put+0xd4/0x210
[   89.851619][ T4460]  ? __mutex_lock_common+0x435/0x2400
[   89.856978][ T4460]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   89.862339][ T4460]  ? mutex_lock_io_nested+0x60/0x60
[   89.867541][ T4460]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   89.873504][ T4460]  mtdchar_unlocked_ioctl+0xad/0xd0
[   89.878680][ T4460]  ? mtdchar_write+0x5a0/0x5a0
[   89.883422][ T4460]  __se_sys_ioctl+0xfa/0x170
[   89.887993][ T4460]  do_syscall_64+0x4c/0xa0
[   89.892388][ T4460]  ? clear_bhb_loop+0x30/0x80
[   89.897045][ T4460]  ? clear_bhb_loop+0x30/0x80
[   89.901705][ T4460]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   89.907587][ T4460] RIP: 0033:0x7f4f307f11d9
[   89.911984][ T4460] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   89.931572][ T4460] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   89.939968][ T4460] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   89.947919][ T4460] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   89.955874][ T4460] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   89.963828][ T4460] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   89.971782][ T4460] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   89.979757][ T4460]  </TASK>
[   90.009669][ T4456] 0x000000000000-0x000000010000 : ""
[   90.021134][ T4456] ftl_cs: FTL header not found.
[   90.044278][ T4456] FAULT_INJECTION: forcing a failure.
[   90.044278][ T4456] name failslab, interval 1, probability 0, space 0, times 0
[   90.057404][ T4456] CPU: 0 PID: 4456 Comm: syz.1.38 Not tainted syzkaller #0
[   90.064621][ T4456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   90.074686][ T4456] Call Trace:
[   90.077968][ T4456]  <TASK>
[   90.080894][ T4456]  dump_stack_lvl+0x188/0x250
[   90.085567][ T4456]  ? show_regs_print_info+0x20/0x20
[   90.090791][ T4456]  ? load_image+0x410/0x410
[   90.095278][ T4456]  ? __might_sleep+0xf0/0xf0
[   90.099853][ T4456]  ? __lock_acquire+0x7d40/0x7d40
[   90.104865][ T4456]  ? mark_lock+0x94/0x320
[   90.109194][ T4456]  should_fail+0x383/0x4b0
[   90.113604][ T4456]  should_failslab+0x5/0x20
[   90.118088][ T4456]  slab_pre_alloc_hook+0x51/0xc0
[   90.123016][ T4456]  ? __d_alloc+0x27/0x6d0
[   90.127340][ T4456]  kmem_cache_alloc+0x3d/0x280
[   90.132101][ T4456]  __d_alloc+0x27/0x6d0
[   90.136258][ T4456]  d_alloc_parallel+0x7b/0x1320
[   90.141100][ T4456]  ? __init_waitqueue_head+0xa4/0x140
[   90.146460][ T4456]  __lookup_slow+0x134/0x410
[   90.151055][ T4456]  ? lookup_one_len+0x2d0/0x2d0
[   90.155910][ T4456]  lookup_one_len+0x19d/0x2d0
[   90.160588][ T4456]  ? lookup_one_common+0x460/0x460
[   90.165681][ T4456]  ? do_raw_spin_unlock+0x11d/0x230
[   90.170858][ T4456]  ? mntput+0x64/0xc0
[   90.174823][ T4456]  start_creating+0x184/0x310
[   90.179484][ T4456]  __debugfs_create_file+0x6f/0x500
[   90.184673][ T4456]  blk_mq_debugfs_register+0x113/0x7e0
[   90.190116][ T4456]  ? debugfs_create_dir+0x423/0x4c0
[   90.195310][ T4456]  blk_register_queue+0x204/0x3a0
[   90.200339][ T4456]  device_add_disk+0x60f/0xde0
[   90.205090][ T4456]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   90.210361][ T4456]  mtdblock_add_mtd+0x186/0x240
[   90.215212][ T4456]  blktrans_notify_add+0x95/0xe0
[   90.220129][ T4456]  add_mtd_device+0xd40/0x1260
[   90.224886][ T4456]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   90.230680][ T4456]  ? mtd_cls_resume+0x130/0x130
[   90.235522][ T4456]  mtd_add_partition+0x25d/0x420
[   90.240447][ T4456]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   90.245558][ T4456]  ? shrink_ecclayout+0xab0/0xab0
[   90.250576][ T4456]  ? __might_fault+0xb3/0x110
[   90.255237][ T4456]  ? _copy_from_user+0x111/0x170
[   90.260156][ T4456]  mtdchar_ioctl+0x14cb/0x1d70
[   90.264898][ T4456]  ? lock_chain_count+0x20/0x20
[   90.269732][ T4456]  ? mtdchar_close+0x180/0x180
[   90.274479][ T4456]  ? finish_lock_switch+0x12d/0x290
[   90.279660][ T4456]  ? verify_lock_unused+0x140/0x140
[   90.284840][ T4456]  ? finish_task_switch+0x12f/0x650
[   90.290023][ T4456]  ? __schedule+0x11cb/0x4350
[   90.294681][ T4456]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   90.300304][ T4456]  ? rcu_lock_acquire+0x30/0x30
[   90.305144][ T4456]  ? __mutex_lock_common+0x1471/0x2400
[   90.310605][ T4456]  ? __lock_acquire+0x7d40/0x7d40
[   90.315613][ T4456]  ? do_raw_spin_lock+0x128/0x2f0
[   90.320621][ T4456]  ? __rwlock_init+0x140/0x140
[   90.325368][ T4456]  ? do_raw_spin_unlock+0x11d/0x230
[   90.330547][ T4456]  ? __mutex_lock_common+0x147b/0x2400
[   90.336017][ T4456]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   90.341380][ T4456]  ? mutex_lock_io_nested+0x60/0x60
[   90.346579][ T4456]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   90.352558][ T4456]  mtdchar_unlocked_ioctl+0xad/0xd0
[   90.357753][ T4456]  ? mtdchar_write+0x5a0/0x5a0
[   90.362500][ T4456]  __se_sys_ioctl+0xfa/0x170
[   90.367089][ T4456]  do_syscall_64+0x4c/0xa0
[   90.371491][ T4456]  ? clear_bhb_loop+0x30/0x80
[   90.376195][ T4456]  ? clear_bhb_loop+0x30/0x80
[   90.380878][ T4456]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   90.386777][ T4456] RIP: 0033:0x7fef503c01d9
[   90.391172][ T4456] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   90.410770][ T4456] RSP: 002b:00007fffed71d8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   90.419174][ T4456] RAX: ffffffffffffffda RBX: 00007fef50647fa0 RCX: 00007fef503c01d9
[   90.427133][ T4456] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   90.435089][ T4456] RBP: 00007fef50457888 R08: 0000000000000000 R09: 0000000000000000
[   90.443064][ T4456] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   90.451043][ T4456] R13: 00007fef50647fac R14: 00007fef50647fa0 R15: 00007fef50647fa0
[   90.459007][ T4456]  </TASK>
[   90.476394][ T4468] 0x000000000000-0x000000010000 : ""
[   90.500013][ T4468] ftl_cs: FTL header not found.
[   90.507736][ T4468] FAULT_INJECTION: forcing a failure.
[   90.507736][ T4468] name failslab, interval 1, probability 0, space 0, times 0
[   90.531531][ T4468] CPU: 1 PID: 4468 Comm: syz.4.43 Not tainted syzkaller #0
[   90.538786][ T4468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   90.548827][ T4468] Call Trace:
[   90.552108][ T4468]  <TASK>
[   90.555039][ T4468]  dump_stack_lvl+0x188/0x250
[   90.559717][ T4468]  ? show_regs_print_info+0x20/0x20
[   90.564894][ T4468]  ? load_image+0x410/0x410
[   90.569384][ T4468]  ? __might_sleep+0xf0/0xf0
[   90.573971][ T4468]  ? __lock_acquire+0x7d40/0x7d40
[   90.578986][ T4468]  should_fail+0x383/0x4b0
[   90.583394][ T4468]  should_failslab+0x5/0x20
[   90.587880][ T4468]  slab_pre_alloc_hook+0x51/0xc0
[   90.592804][ T4468]  ? security_inode_alloc+0x30/0x110
[   90.598095][ T4468]  kmem_cache_alloc+0x3d/0x280
[   90.602842][ T4468]  security_inode_alloc+0x30/0x110
[   90.607941][ T4468]  inode_init_always+0x8e5/0xc90
[   90.612874][ T4468]  new_inode_pseudo+0x8e/0x210
[   90.617644][ T4468]  new_inode+0x25/0x1d0
[   90.621792][ T4468]  ? start_creating+0x1f5/0x310
[   90.626627][ T4468]  __debugfs_create_file+0x147/0x500
[   90.631893][ T4468]  blk_mq_debugfs_register+0xcf/0x7e0
[   90.637244][ T4468]  ? debugfs_create_dir+0x423/0x4c0
[   90.642431][ T4468]  blk_register_queue+0x204/0x3a0
[   90.647458][ T4468]  device_add_disk+0x60f/0xde0
[   90.652210][ T4468]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   90.657478][ T4468]  mtdblock_add_mtd+0x186/0x240
[   90.662309][ T4468]  blktrans_notify_add+0x95/0xe0
[   90.667225][ T4468]  add_mtd_device+0xd40/0x1260
[   90.671976][ T4468]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   90.677765][ T4468]  ? mtd_cls_resume+0x130/0x130
[   90.682606][ T4468]  mtd_add_partition+0x25d/0x420
[   90.687547][ T4468]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   90.692656][ T4468]  ? shrink_ecclayout+0xab0/0xab0
[   90.697682][ T4468]  ? __might_fault+0xb3/0x110
[   90.702352][ T4468]  ? _copy_from_user+0x111/0x170
[   90.707284][ T4468]  mtdchar_ioctl+0x14cb/0x1d70
[   90.712050][ T4468]  ? mtdchar_close+0x180/0x180
[   90.716796][ T4468]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   90.722764][ T4468]  ? verify_lock_unused+0x140/0x140
[   90.727949][ T4468]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   90.733563][ T4468]  ? rcu_lock_release+0x5/0x20
[   90.738315][ T4468]  ? __mutex_trylock_common+0x15c/0x260
[   90.743842][ T4468]  ? rcu_lock_release+0x20/0x20
[   90.748690][ T4468]  ? kasan_quarantine_put+0xd4/0x210
[   90.753954][ T4468]  ? __mutex_lock_common+0x435/0x2400
[   90.759308][ T4468]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   90.764660][ T4468]  ? mutex_lock_io_nested+0x60/0x60
[   90.769842][ T4468]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   90.775805][ T4468]  mtdchar_unlocked_ioctl+0xad/0xd0
[   90.780993][ T4468]  ? mtdchar_write+0x5a0/0x5a0
[   90.785735][ T4468]  __se_sys_ioctl+0xfa/0x170
[   90.790315][ T4468]  do_syscall_64+0x4c/0xa0
[   90.794723][ T4468]  ? clear_bhb_loop+0x30/0x80
[   90.799385][ T4468]  ? clear_bhb_loop+0x30/0x80
[   90.804043][ T4468]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   90.809916][ T4468] RIP: 0033:0x7f4f307f11d9
[   90.814324][ T4468] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   90.833911][ T4468] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   90.842311][ T4468] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   90.850281][ T4468] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   90.858259][ T4468] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   90.866317][ T4468] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   90.874278][ T4468] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   90.882248][ T4468]  </TASK>
[   90.894364][ T4468] debugfs: out of free dentries, can not create file 'poll_stat'
[   90.914875][ T4461] 0x000000000000-0x000000010000 : ""
[   90.930349][ T4461] ftl_cs: FTL header not found.
[   90.944095][ T4461] FAULT_INJECTION: forcing a failure.
[   90.944095][ T4461] name failslab, interval 1, probability 0, space 0, times 0
[   90.957265][ T4461] CPU: 0 PID: 4461 Comm: syz.3.40 Not tainted syzkaller #0
[   90.964488][ T4461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   90.974553][ T4461] Call Trace:
[   90.977838][ T4461]  <TASK>
[   90.980771][ T4461]  dump_stack_lvl+0x188/0x250
[   90.985441][ T4461]  ? show_regs_print_info+0x20/0x20
[   90.990624][ T4461]  ? load_image+0x410/0x410
[   90.995118][ T4461]  ? __lock_acquire+0x7d40/0x7d40
[   91.000149][ T4461]  should_fail+0x383/0x4b0
[   91.004568][ T4461]  should_failslab+0x5/0x20
[   91.009060][ T4461]  slab_pre_alloc_hook+0x51/0xc0
[   91.013987][ T4461]  ? new_inode_pseudo+0x77/0x210
[   91.018934][ T4461]  kmem_cache_alloc+0x3d/0x280
[   91.024033][ T4461]  new_inode_pseudo+0x77/0x210
[   91.028807][ T4461]  new_inode+0x25/0x1d0
[   91.032958][ T4461]  ? start_creating+0x1f5/0x310
[   91.037808][ T4461]  __debugfs_create_file+0x147/0x500
[   91.043076][ T4461]  blk_mq_debugfs_register+0xf1/0x7e0
[   91.048430][ T4461]  ? debugfs_create_dir+0x423/0x4c0
[   91.053614][ T4461]  blk_register_queue+0x204/0x3a0
[   91.058658][ T4461]  device_add_disk+0x60f/0xde0
[   91.063407][ T4461]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   91.068673][ T4461]  mtdblock_add_mtd+0x186/0x240
[   91.073510][ T4461]  blktrans_notify_add+0x95/0xe0
[   91.078447][ T4461]  add_mtd_device+0xd40/0x1260
[   91.083200][ T4461]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   91.088989][ T4461]  ? mtd_cls_resume+0x130/0x130
[   91.093842][ T4461]  mtd_add_partition+0x25d/0x420
[   91.098781][ T4461]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   91.103873][ T4461]  ? shrink_ecclayout+0xab0/0xab0
[   91.108892][ T4461]  ? __might_fault+0xb3/0x110
[   91.113558][ T4461]  ? _copy_from_user+0x111/0x170
[   91.118522][ T4461]  mtdchar_ioctl+0x14cb/0x1d70
[   91.123285][ T4461]  ? lock_chain_count+0x20/0x20
[   91.128125][ T4461]  ? mtdchar_close+0x180/0x180
[   91.132895][ T4461]  ? finish_lock_switch+0x12d/0x290
[   91.138092][ T4461]  ? verify_lock_unused+0x140/0x140
[   91.143291][ T4461]  ? finish_task_switch+0x12f/0x650
[   91.148489][ T4461]  ? __schedule+0x11cb/0x4350
[   91.153147][ T4461]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   91.158785][ T4461]  ? rcu_lock_acquire+0x30/0x30
[   91.163614][ T4461]  ? __mutex_lock_common+0x1471/0x2400
[   91.169051][ T4461]  ? __lock_acquire+0x7d40/0x7d40
[   91.174056][ T4461]  ? do_raw_spin_lock+0x128/0x2f0
[   91.179081][ T4461]  ? __rwlock_init+0x140/0x140
[   91.183826][ T4461]  ? do_raw_spin_unlock+0x11d/0x230
[   91.189003][ T4461]  ? __mutex_lock_common+0x147b/0x2400
[   91.194458][ T4461]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   91.199832][ T4461]  ? mutex_lock_io_nested+0x60/0x60
[   91.205016][ T4461]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   91.210979][ T4461]  mtdchar_unlocked_ioctl+0xad/0xd0
[   91.216160][ T4461]  ? mtdchar_write+0x5a0/0x5a0
[   91.220939][ T4461]  __se_sys_ioctl+0xfa/0x170
[   91.225514][ T4461]  do_syscall_64+0x4c/0xa0
[   91.229911][ T4461]  ? clear_bhb_loop+0x30/0x80
[   91.234578][ T4461]  ? clear_bhb_loop+0x30/0x80
[   91.239259][ T4461]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   91.245134][ T4461] RIP: 0033:0x7f3e68e401d9
[   91.249543][ T4461] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   91.269134][ T4461] RSP: 002b:00007ffd0098da68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   91.277533][ T4461] RAX: ffffffffffffffda RBX: 00007f3e690c7fa0 RCX: 00007f3e68e401d9
[   91.285491][ T4461] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   91.293451][ T4461] RBP: 00007f3e68ed7888 R08: 0000000000000000 R09: 0000000000000000
[   91.301435][ T4461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   91.309406][ T4461] R13: 00007f3e690c7fac R14: 00007f3e690c7fa0 R15: 00007f3e690c7fa0
[   91.317370][ T4461]  </TASK>
[   91.323971][ T4461] debugfs: out of free dentries, can not create file 'requeue_list'
[   91.345991][ T4462] 0x000000000000-0x000000010000 : ""
[   91.356748][ T4462] ftl_cs: FTL header not found.
[   91.372674][ T4462] FAULT_INJECTION: forcing a failure.
[   91.372674][ T4462] name failslab, interval 1, probability 0, space 0, times 0
[   91.385959][ T4462] CPU: 0 PID: 4462 Comm: syz.2.41 Not tainted syzkaller #0
[   91.393173][ T4462] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   91.403231][ T4462] Call Trace:
[   91.406517][ T4462]  <TASK>
[   91.409451][ T4462]  dump_stack_lvl+0x188/0x250
[   91.414122][ T4462]  ? show_regs_print_info+0x20/0x20
[   91.419321][ T4462]  ? load_image+0x410/0x410
[   91.423807][ T4462]  ? __might_sleep+0xf0/0xf0
[   91.428378][ T4462]  ? __lock_acquire+0x7d40/0x7d40
[   91.433398][ T4462]  should_fail+0x383/0x4b0
[   91.437831][ T4462]  should_failslab+0x5/0x20
[   91.442337][ T4462]  slab_pre_alloc_hook+0x51/0xc0
[   91.447269][ T4462]  ? __kernfs_new_node+0xa8/0x6b0
[   91.452281][ T4462]  __kmalloc_track_caller+0x69/0x330
[   91.457583][ T4462]  ? __kernfs_new_node+0xa8/0x6b0
[   91.462592][ T4462]  kstrdup_const+0x51/0x90
[   91.466990][ T4462]  __kernfs_new_node+0xa8/0x6b0
[   91.471832][ T4462]  ? kernfs_new_node+0x250/0x250
[   91.476768][ T4462]  ? pointer+0xc60/0xc60
[   91.480991][ T4462]  ? format_decode+0xb38/0x1330
[   91.485826][ T4462]  kernfs_new_node+0x148/0x250
[   91.490573][ T4462]  kernfs_create_dir_ns+0x40/0x120
[   91.495674][ T4462]  sysfs_create_dir_ns+0x12c/0x290
[   91.500786][ T4462]  ? sysfs_warn_dup+0xa0/0xa0
[   91.505457][ T4462]  ? sysfs_create_dir_ns+0x167/0x290
[   91.510737][ T4462]  ? rcu_is_watching+0x11/0xa0
[   91.515485][ T4462]  ? kobject_set_name_vargs+0xc6/0x110
[   91.520941][ T4462]  kobject_add_internal+0x5ba/0xcd0
[   91.526139][ T4462]  kobject_add+0x160/0x230
[   91.530542][ T4462]  ? kobject_init+0x1c0/0x1c0
[   91.535210][ T4462]  ? kobject_init+0x1c0/0x1c0
[   91.539882][ T4462]  ? dev_uevent_filter+0x3f/0xb0
[   91.544807][ T4462]  blk_mq_register_hctx+0x1d5/0x400
[   91.549990][ T4462]  __blk_mq_register_dev+0x206/0x640
[   91.555276][ T4462]  ? debugfs_create_dir+0x423/0x4c0
[   91.560478][ T4462]  blk_register_queue+0x1fc/0x3a0
[   91.565507][ T4462]  device_add_disk+0x60f/0xde0
[   91.570259][ T4462]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   91.575537][ T4462]  mtdblock_add_mtd+0x186/0x240
[   91.580407][ T4462]  blktrans_notify_add+0x95/0xe0
[   91.585325][ T4462]  add_mtd_device+0xd40/0x1260
[   91.590076][ T4462]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   91.595873][ T4462]  ? mtd_cls_resume+0x130/0x130
[   91.600732][ T4462]  mtd_add_partition+0x25d/0x420
[   91.605655][ T4462]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   91.610764][ T4462]  ? shrink_ecclayout+0xab0/0xab0
[   91.615793][ T4462]  ? __might_fault+0xb3/0x110
[   91.620468][ T4462]  ? _copy_from_user+0x111/0x170
[   91.625382][ T4462]  mtdchar_ioctl+0x14cb/0x1d70
[   91.630124][ T4462]  ? lock_chain_count+0x20/0x20
[   91.634965][ T4462]  ? mtdchar_close+0x180/0x180
[   91.639743][ T4462]  ? finish_lock_switch+0x12d/0x290
[   91.644925][ T4462]  ? verify_lock_unused+0x140/0x140
[   91.650102][ T4462]  ? finish_task_switch+0x12f/0x650
[   91.655298][ T4462]  ? __schedule+0x11cb/0x4350
[   91.659994][ T4462]  ? __pv_queued_spin_lock_slowpath+0x7de/0x9b0
[   91.666225][ T4462]  ? rcu_lock_acquire+0x30/0x30
[   91.671063][ T4462]  ? __mutex_lock_common+0x1471/0x2400
[   91.676551][ T4462]  ? __lock_acquire+0x7d40/0x7d40
[   91.681560][ T4462]  ? do_raw_spin_lock+0x128/0x2f0
[   91.686566][ T4462]  ? __rwlock_init+0x140/0x140
[   91.691317][ T4462]  ? do_raw_spin_unlock+0x11d/0x230
[   91.696520][ T4462]  ? __mutex_lock_common+0x147b/0x2400
[   91.701972][ T4462]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   91.707325][ T4462]  ? mutex_lock_io_nested+0x60/0x60
[   91.712515][ T4462]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   91.718519][ T4462]  mtdchar_unlocked_ioctl+0xad/0xd0
[   91.723703][ T4462]  ? mtdchar_write+0x5a0/0x5a0
[   91.728445][ T4462]  __se_sys_ioctl+0xfa/0x170
[   91.733023][ T4462]  do_syscall_64+0x4c/0xa0
[   91.737447][ T4462]  ? clear_bhb_loop+0x30/0x80
[   91.742106][ T4462]  ? clear_bhb_loop+0x30/0x80
[   91.746764][ T4462]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   91.752650][ T4462] RIP: 0033:0x7f36f4c591d9
[   91.757065][ T4462] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   91.776672][ T4462] RSP: 002b:00007ffc5e94ee28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   91.785093][ T4462] RAX: ffffffffffffffda RBX: 00007f36f4ee0fa0 RCX: 00007f36f4c591d9
[   91.793061][ T4462] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   91.801033][ T4462] RBP: 00007f36f4cf0888 R08: 0000000000000000 R09: 0000000000000000
[   91.808991][ T4462] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   91.816949][ T4462] R13: 00007f36f4ee0fac R14: 00007f36f4ee0fa0 R15: 00007f36f4ee0fa0
[   91.824915][ T4462]  </TASK>
[   91.836737][ T4462] kobject_add_internal failed for cpu1 (error: -12 parent: 0)
[   91.851415][ T4473] 0x000000000000-0x000000010000 : ""
[   91.864152][ T4473] ftl_cs: FTL header not found.
[   91.878627][ T4473] FAULT_INJECTION: forcing a failure.
[   91.878627][ T4473] name failslab, interval 1, probability 0, space 0, times 0
[   91.894063][ T4473] CPU: 0 PID: 4473 Comm: syz.3.46 Not tainted syzkaller #0
[   91.901283][ T4473] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   91.911346][ T4473] Call Trace:
[   91.914628][ T4473]  <TASK>
[   91.917558][ T4473]  dump_stack_lvl+0x188/0x250
[   91.922244][ T4473]  ? show_regs_print_info+0x20/0x20
[   91.927427][ T4473]  ? load_image+0x410/0x410
[   91.931918][ T4473]  ? __lock_acquire+0x7d40/0x7d40
[   91.936948][ T4473]  should_fail+0x383/0x4b0
[   91.941357][ T4473]  should_failslab+0x5/0x20
[   91.945846][ T4473]  slab_pre_alloc_hook+0x51/0xc0
[   91.950764][ T4473]  ? new_inode_pseudo+0x77/0x210
[   91.955686][ T4473]  kmem_cache_alloc+0x3d/0x280
[   91.960446][ T4473]  new_inode_pseudo+0x77/0x210
[   91.965203][ T4473]  new_inode+0x25/0x1d0
[   91.969354][ T4473]  ? start_creating+0x1f5/0x310
[   91.974196][ T4473]  __debugfs_create_file+0x147/0x500
[   91.979489][ T4473]  blk_mq_debugfs_register+0xf1/0x7e0
[   91.984859][ T4473]  ? debugfs_create_dir+0x423/0x4c0
[   91.990046][ T4473]  blk_register_queue+0x204/0x3a0
[   91.995060][ T4473]  device_add_disk+0x60f/0xde0
[   91.999814][ T4473]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   92.005086][ T4473]  mtdblock_add_mtd+0x186/0x240
[   92.009923][ T4473]  blktrans_notify_add+0x95/0xe0
[   92.014866][ T4473]  add_mtd_device+0xd40/0x1260
[   92.019620][ T4473]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   92.025412][ T4473]  ? mtd_cls_resume+0x130/0x130
[   92.030260][ T4473]  mtd_add_partition+0x25d/0x420
[   92.035183][ T4473]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   92.040280][ T4473]  ? shrink_ecclayout+0xab0/0xab0
[   92.045294][ T4473]  ? __might_fault+0xb3/0x110
[   92.049960][ T4473]  ? _copy_from_user+0x111/0x170
[   92.054898][ T4473]  mtdchar_ioctl+0x14cb/0x1d70
[   92.059650][ T4473]  ? mtdchar_close+0x180/0x180
[   92.064397][ T4473]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   92.070374][ T4473]  ? verify_lock_unused+0x140/0x140
[   92.075559][ T4473]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   92.081177][ T4473]  ? rcu_lock_release+0x5/0x20
[   92.085954][ T4473]  ? __mutex_trylock_common+0x15c/0x260
[   92.091495][ T4473]  ? rcu_lock_release+0x20/0x20
[   92.096350][ T4473]  ? kasan_quarantine_put+0xd4/0x210
[   92.101633][ T4473]  ? __mutex_lock_common+0x435/0x2400
[   92.107017][ T4473]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   92.112473][ T4473]  ? mutex_lock_io_nested+0x60/0x60
[   92.117681][ T4473]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   92.123768][ T4473]  mtdchar_unlocked_ioctl+0xad/0xd0
[   92.128978][ T4473]  ? mtdchar_write+0x5a0/0x5a0
[   92.133727][ T4473]  __se_sys_ioctl+0xfa/0x170
[   92.138321][ T4473]  do_syscall_64+0x4c/0xa0
[   92.142740][ T4473]  ? clear_bhb_loop+0x30/0x80
[   92.147405][ T4473]  ? clear_bhb_loop+0x30/0x80
[   92.152084][ T4473]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   92.157998][ T4473] RIP: 0033:0x7f3e68e401d9
[   92.162399][ T4473] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   92.181996][ T4473] RSP: 002b:00007ffd0098da68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   92.190419][ T4473] RAX: ffffffffffffffda RBX: 00007f3e690c7fa0 RCX: 00007f3e68e401d9
[   92.198377][ T4473] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   92.206354][ T4473] RBP: 00007f3e68ed7888 R08: 0000000000000000 R09: 0000000000000000
[   92.214319][ T4473] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   92.222299][ T4473] R13: 00007f3e690c7fac R14: 00007f3e690c7fa0 R15: 00007f3e690c7fa0
[   92.230295][ T4473]  </TASK>
[   92.236023][ T4473] debugfs: out of free dentries, can not create file 'requeue_list'
[   92.247341][ T4465] 0x000000000000-0x000000010000 : ""
[   92.259743][ T4465] ftl_cs: FTL header not found.
[   92.268281][ T4465] FAULT_INJECTION: forcing a failure.
[   92.268281][ T4465] name fail_page_alloc, interval 1, probability 0, space 0, times 1
[   92.282212][ T4465] CPU: 0 PID: 4465 Comm: syz.0.42 Not tainted syzkaller #0
[   92.289432][ T4465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   92.299490][ T4465] Call Trace:
[   92.302772][ T4465]  <TASK>
[   92.305709][ T4465]  dump_stack_lvl+0x188/0x250
[   92.310386][ T4465]  ? show_regs_print_info+0x20/0x20
[   92.315584][ T4465]  ? load_image+0x410/0x410
[   92.320070][ T4465]  ? verify_lock_unused+0x140/0x140
[   92.325255][ T4465]  ? verify_lock_unused+0x140/0x140
[   92.330472][ T4465]  should_fail+0x383/0x4b0
[   92.334876][ T4465]  prepare_alloc_pages+0x1e3/0x5b0
[   92.339973][ T4465]  __alloc_pages+0x11b/0x480
[   92.344555][ T4465]  ? zone_statistics+0x170/0x170
[   92.349492][ T4465]  ? alloc_pages+0x452/0x560
[   92.354082][ T4465]  new_slab+0xc0/0x4b0
[   92.358133][ T4465]  ___slab_alloc+0x807/0xdd0
[   92.362711][ T4465]  ? new_inode_pseudo+0x77/0x210
[   92.367667][ T4465]  ? new_inode_pseudo+0x77/0x210
[   92.372585][ T4465]  kmem_cache_alloc+0xf0/0x280
[   92.377340][ T4465]  new_inode_pseudo+0x77/0x210
[   92.382089][ T4465]  new_inode+0x25/0x1d0
[   92.386244][ T4465]  ? start_creating+0x1f5/0x310
[   92.391080][ T4465]  __debugfs_create_file+0x147/0x500
[   92.396374][ T4465]  blk_mq_debugfs_register+0xf1/0x7e0
[   92.401744][ T4465]  ? debugfs_create_dir+0x423/0x4c0
[   92.406954][ T4465]  blk_register_queue+0x204/0x3a0
[   92.411961][ T4465]  device_add_disk+0x60f/0xde0
[   92.416710][ T4465]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   92.421990][ T4465]  mtdblock_add_mtd+0x186/0x240
[   92.426857][ T4465]  blktrans_notify_add+0x95/0xe0
[   92.431798][ T4465]  add_mtd_device+0xd40/0x1260
[   92.436566][ T4465]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   92.442453][ T4465]  ? mtd_cls_resume+0x130/0x130
[   92.447335][ T4465]  mtd_add_partition+0x25d/0x420
[   92.452260][ T4465]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   92.457352][ T4465]  ? shrink_ecclayout+0xab0/0xab0
[   92.462381][ T4465]  ? __might_fault+0xb3/0x110
[   92.467071][ T4465]  ? _copy_from_user+0x111/0x170
[   92.471987][ T4465]  mtdchar_ioctl+0x14cb/0x1d70
[   92.476732][ T4465]  ? lock_chain_count+0x20/0x20
[   92.481568][ T4465]  ? mtdchar_close+0x180/0x180
[   92.486329][ T4465]  ? finish_lock_switch+0x12d/0x290
[   92.491507][ T4465]  ? verify_lock_unused+0x140/0x140
[   92.496684][ T4465]  ? finish_task_switch+0x12f/0x650
[   92.501872][ T4465]  ? __schedule+0x11cb/0x4350
[   92.506548][ T4465]  ? rcu_lock_acquire+0x30/0x30
[   92.511398][ T4465]  ? __mutex_lock_common+0x1471/0x2400
[   92.516842][ T4465]  ? __lock_acquire+0x7d40/0x7d40
[   92.521854][ T4465]  ? do_raw_spin_lock+0x128/0x2f0
[   92.526970][ T4465]  ? __rwlock_init+0x140/0x140
[   92.531721][ T4465]  ? do_raw_spin_unlock+0x11d/0x230
[   92.536920][ T4465]  ? __mutex_lock_common+0x147b/0x2400
[   92.542379][ T4465]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   92.547764][ T4465]  ? mutex_lock_io_nested+0x60/0x60
[   92.552949][ T4465]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   92.558913][ T4465]  mtdchar_unlocked_ioctl+0xad/0xd0
[   92.564099][ T4465]  ? mtdchar_write+0x5a0/0x5a0
[   92.568859][ T4465]  __se_sys_ioctl+0xfa/0x170
[   92.573430][ T4465]  do_syscall_64+0x4c/0xa0
[   92.577824][ T4465]  ? clear_bhb_loop+0x30/0x80
[   92.582483][ T4465]  ? clear_bhb_loop+0x30/0x80
[   92.587157][ T4465]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   92.593031][ T4465] RIP: 0033:0x7fe1100aa1d9
[   92.597425][ T4465] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   92.617016][ T4465] RSP: 002b:00007ffcacef5708 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   92.625426][ T4465] RAX: ffffffffffffffda RBX: 00007fe110331fa0 RCX: 00007fe1100aa1d9
[   92.633395][ T4465] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   92.641352][ T4465] RBP: 00007fe110141888 R08: 0000000000000000 R09: 0000000000000000
[   92.649322][ T4465] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   92.657274][ T4465] R13: 00007fe110331fac R14: 00007fe110331fa0 R15: 00007fe110331fa0
[   92.665265][ T4465]  </TASK>
[   92.697066][ T4469] 0x000000000000-0x000000010000 : ""
[   92.715188][ T4469] ftl_cs: FTL header not found.
[   92.724436][ T4469] FAULT_INJECTION: forcing a failure.
[   92.724436][ T4469] name failslab, interval 1, probability 0, space 0, times 0
[   92.744139][ T4469] CPU: 0 PID: 4469 Comm: syz.1.44 Not tainted syzkaller #0
[   92.751369][ T4469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   92.761433][ T4469] Call Trace:
[   92.764712][ T4469]  <TASK>
[   92.767652][ T4469]  dump_stack_lvl+0x188/0x250
[   92.772319][ T4469]  ? show_regs_print_info+0x20/0x20
[   92.777495][ T4469]  ? load_image+0x410/0x410
[   92.781984][ T4469]  ? __might_sleep+0xf0/0xf0
[   92.786561][ T4469]  ? __lock_acquire+0x7d40/0x7d40
[   92.791594][ T4469]  should_fail+0x383/0x4b0
[   92.796001][ T4469]  should_failslab+0x5/0x20
[   92.800483][ T4469]  slab_pre_alloc_hook+0x51/0xc0
[   92.805400][ T4469]  ? __kernfs_new_node+0xe3/0x6b0
[   92.810407][ T4469]  kmem_cache_alloc+0x3d/0x280
[   92.815153][ T4469]  __kernfs_new_node+0xe3/0x6b0
[   92.819996][ T4469]  ? kernfs_new_node+0x250/0x250
[   92.824935][ T4469]  ? pointer+0xc60/0xc60
[   92.829179][ T4469]  ? format_decode+0xb38/0x1330
[   92.834014][ T4469]  kernfs_new_node+0x148/0x250
[   92.838765][ T4469]  kernfs_create_dir_ns+0x40/0x120
[   92.843877][ T4469]  sysfs_create_dir_ns+0x12c/0x290
[   92.849002][ T4469]  ? sysfs_warn_dup+0xa0/0xa0
[   92.853671][ T4469]  ? sysfs_create_dir_ns+0x167/0x290
[   92.858965][ T4469]  ? rcu_is_watching+0x11/0xa0
[   92.863715][ T4469]  ? kobject_set_name_vargs+0xc6/0x110
[   92.869163][ T4469]  kobject_add_internal+0x5ba/0xcd0
[   92.874364][ T4469]  kobject_add+0x160/0x230
[   92.878764][ T4469]  ? kobject_init+0x1c0/0x1c0
[   92.883422][ T4469]  ? kobject_init+0x1c0/0x1c0
[   92.888077][ T4469]  ? dev_uevent_filter+0x3f/0xb0
[   92.893014][ T4469]  blk_mq_register_hctx+0x1d5/0x400
[   92.898216][ T4469]  __blk_mq_register_dev+0x206/0x640
[   92.903485][ T4469]  ? debugfs_create_dir+0x423/0x4c0
[   92.908681][ T4469]  blk_register_queue+0x1fc/0x3a0
[   92.913694][ T4469]  device_add_disk+0x60f/0xde0
[   92.918446][ T4469]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   92.923714][ T4469]  mtdblock_add_mtd+0x186/0x240
[   92.928547][ T4469]  blktrans_notify_add+0x95/0xe0
[   92.933474][ T4469]  add_mtd_device+0xd40/0x1260
[   92.938245][ T4469]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   92.944040][ T4469]  ? mtd_cls_resume+0x130/0x130
[   92.948891][ T4469]  mtd_add_partition+0x25d/0x420
[   92.953812][ T4469]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   92.958913][ T4469]  ? shrink_ecclayout+0xab0/0xab0
[   92.963926][ T4469]  ? __might_fault+0xb3/0x110
[   92.968588][ T4469]  ? _copy_from_user+0x111/0x170
[   92.973514][ T4469]  mtdchar_ioctl+0x14cb/0x1d70
[   92.978278][ T4469]  ? lock_chain_count+0x20/0x20
[   92.983116][ T4469]  ? mtdchar_close+0x180/0x180
[   92.987878][ T4469]  ? finish_lock_switch+0x12d/0x290
[   92.993069][ T4469]  ? verify_lock_unused+0x140/0x140
[   92.998250][ T4469]  ? finish_task_switch+0x1e4/0x650
[   93.003434][ T4469]  ? __schedule+0x11cb/0x4350
[   93.008093][ T4469]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   93.013731][ T4469]  ? rcu_lock_acquire+0x30/0x30
[   93.018582][ T4469]  ? __mutex_lock_common+0x1471/0x2400
[   93.024026][ T4469]  ? __lock_acquire+0x7d40/0x7d40
[   93.029030][ T4469]  ? do_raw_spin_lock+0x128/0x2f0
[   93.034035][ T4469]  ? __rwlock_init+0x140/0x140
[   93.038798][ T4469]  ? do_raw_spin_unlock+0x11d/0x230
[   93.043976][ T4469]  ? __mutex_lock_common+0x147b/0x2400
[   93.049438][ T4469]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   93.054791][ T4469]  ? mutex_lock_io_nested+0x60/0x60
[   93.059972][ T4469]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   93.065937][ T4469]  mtdchar_unlocked_ioctl+0xad/0xd0
[   93.071130][ T4469]  ? mtdchar_write+0x5a0/0x5a0
[   93.075874][ T4469]  __se_sys_ioctl+0xfa/0x170
[   93.080468][ T4469]  do_syscall_64+0x4c/0xa0
[   93.084866][ T4469]  ? clear_bhb_loop+0x30/0x80
[   93.089528][ T4469]  ? clear_bhb_loop+0x30/0x80
[   93.094203][ T4469]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   93.100079][ T4469] RIP: 0033:0x7fef503c01d9
[   93.104474][ T4469] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   93.124061][ T4469] RSP: 002b:00007fffed71d8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   93.132455][ T4469] RAX: ffffffffffffffda RBX: 00007fef50647fa0 RCX: 00007fef503c01d9
[   93.140424][ T4469] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   93.148375][ T4469] RBP: 00007fef50457888 R08: 0000000000000000 R09: 0000000000000000
[   93.156325][ T4469] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   93.164293][ T4469] R13: 00007fef50647fac R14: 00007fef50647fa0 R15: 00007fef50647fa0
[   93.172261][ T4469]  </TASK>
[   93.179849][ T4469] kobject_add_internal failed for cpu1 (error: -12 parent: 0)
[   93.197954][ T4471] 0x000000000000-0x000000010000 : ""
[   93.223598][ T4471] ftl_cs: FTL header not found.
[   93.231042][ T4471] FAULT_INJECTION: forcing a failure.
[   93.231042][ T4471] name failslab, interval 1, probability 0, space 0, times 0
[   93.244122][ T4471] CPU: 0 PID: 4471 Comm: syz.4.45 Not tainted syzkaller #0
[   93.251336][ T4471] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   93.261391][ T4471] Call Trace:
[   93.264676][ T4471]  <TASK>
[   93.267616][ T4471]  dump_stack_lvl+0x188/0x250
[   93.272301][ T4471]  ? show_regs_print_info+0x20/0x20
[   93.277496][ T4471]  ? load_image+0x410/0x410
[   93.281989][ T4471]  ? __might_sleep+0xf0/0xf0
[   93.286576][ T4471]  ? __lock_acquire+0x7d40/0x7d40
[   93.291593][ T4471]  should_fail+0x383/0x4b0
[   93.296010][ T4471]  should_failslab+0x5/0x20
[   93.300495][ T4471]  slab_pre_alloc_hook+0x51/0xc0
[   93.305414][ T4471]  ? __kernfs_new_node+0xe3/0x6b0
[   93.310442][ T4471]  kmem_cache_alloc+0x3d/0x280
[   93.315199][ T4471]  __kernfs_new_node+0xe3/0x6b0
[   93.320049][ T4471]  ? kernfs_new_node+0x250/0x250
[   93.324970][ T4471]  ? pointer+0xc60/0xc60
[   93.329196][ T4471]  ? format_decode+0xb38/0x1330
[   93.334041][ T4471]  kernfs_new_node+0x148/0x250
[   93.338804][ T4471]  kernfs_create_dir_ns+0x40/0x120
[   93.343899][ T4471]  sysfs_create_dir_ns+0x12c/0x290
[   93.348990][ T4471]  ? sysfs_warn_dup+0xa0/0xa0
[   93.353649][ T4471]  ? sysfs_create_dir_ns+0x167/0x290
[   93.358928][ T4471]  ? rcu_is_watching+0x11/0xa0
[   93.363671][ T4471]  ? kobject_set_name_vargs+0xc6/0x110
[   93.369109][ T4471]  kobject_add_internal+0x5ba/0xcd0
[   93.374305][ T4471]  kobject_add+0x160/0x230
[   93.378719][ T4471]  ? kobject_init+0x1c0/0x1c0
[   93.383384][ T4471]  ? kobject_init+0x1c0/0x1c0
[   93.388055][ T4471]  ? dev_uevent_filter+0x3f/0xb0
[   93.392983][ T4471]  blk_mq_register_hctx+0x1d5/0x400
[   93.398183][ T4471]  __blk_mq_register_dev+0x206/0x640
[   93.403449][ T4471]  ? debugfs_create_dir+0x423/0x4c0
[   93.408633][ T4471]  blk_register_queue+0x1fc/0x3a0
[   93.413649][ T4471]  device_add_disk+0x60f/0xde0
[   93.418432][ T4471]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   93.423713][ T4471]  mtdblock_add_mtd+0x186/0x240
[   93.428577][ T4471]  blktrans_notify_add+0x95/0xe0
[   93.433505][ T4471]  add_mtd_device+0xd40/0x1260
[   93.438296][ T4471]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   93.444091][ T4471]  ? mtd_cls_resume+0x130/0x130
[   93.448949][ T4471]  mtd_add_partition+0x25d/0x420
[   93.453880][ T4471]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   93.458988][ T4471]  ? shrink_ecclayout+0xab0/0xab0
[   93.464002][ T4471]  ? __might_fault+0xb3/0x110
[   93.468680][ T4471]  ? _copy_from_user+0x111/0x170
[   93.473605][ T4471]  mtdchar_ioctl+0x14cb/0x1d70
[   93.478362][ T4471]  ? lock_chain_count+0x20/0x20
[   93.483202][ T4471]  ? mtdchar_close+0x180/0x180
[   93.487965][ T4471]  ? finish_lock_switch+0x12d/0x290
[   93.493156][ T4471]  ? verify_lock_unused+0x140/0x140
[   93.498357][ T4471]  ? finish_task_switch+0x12f/0x650
[   93.503560][ T4471]  ? __schedule+0x11cb/0x4350
[   93.508218][ T4471]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   93.513853][ T4471]  ? rcu_lock_acquire+0x30/0x30
[   93.518701][ T4471]  ? __mutex_lock_common+0x1471/0x2400
[   93.524142][ T4471]  ? __lock_acquire+0x7d40/0x7d40
[   93.529150][ T4471]  ? do_raw_spin_lock+0x128/0x2f0
[   93.534166][ T4471]  ? __rwlock_init+0x140/0x140
[   93.538953][ T4471]  ? do_raw_spin_unlock+0x11d/0x230
[   93.544135][ T4471]  ? __mutex_lock_common+0x147b/0x2400
[   93.549597][ T4471]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   93.554971][ T4471]  ? mutex_lock_io_nested+0x60/0x60
[   93.560175][ T4471]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   93.566139][ T4471]  mtdchar_unlocked_ioctl+0xad/0xd0
[   93.571321][ T4471]  ? mtdchar_write+0x5a0/0x5a0
[   93.576082][ T4471]  __se_sys_ioctl+0xfa/0x170
[   93.580672][ T4471]  do_syscall_64+0x4c/0xa0
[   93.585090][ T4471]  ? clear_bhb_loop+0x30/0x80
[   93.589755][ T4471]  ? clear_bhb_loop+0x30/0x80
[   93.594417][ T4471]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   93.600311][ T4471] RIP: 0033:0x7f4f307f11d9
[   93.604706][ T4471] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   93.624290][ T4471] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   93.632689][ T4471] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   93.640656][ T4471] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   93.648617][ T4471] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   93.656576][ T4471] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   93.664545][ T4471] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   93.672520][ T4471]  </TASK>
[   93.682059][ T4471] kobject_add_internal failed for cpu0 (error: -12 parent: 0)
[   93.695891][ T4482] 0x000000000000-0x000000010000 : ""
[   93.707329][ T4482] ftl_cs: FTL header not found.
[   93.723434][ T4482] FAULT_INJECTION: forcing a failure.
2026/10/09 05:47:08 executed programs: 44
[   93.723434][ T4482] name failslab, interval 1, probability 0, space 0, times 0
[   93.736237][ T4482] CPU: 0 PID: 4482 Comm: syz.1.50 Not tainted syzkaller #0
[   93.743453][ T4482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   93.753517][ T4482] Call Trace:
[   93.756799][ T4482]  <TASK>
[   93.759734][ T4482]  dump_stack_lvl+0x188/0x250
[   93.764426][ T4482]  ? show_regs_print_info+0x20/0x20
[   93.769632][ T4482]  ? load_image+0x410/0x410
[   93.774119][ T4482]  ? __might_sleep+0xf0/0xf0
[   93.778691][ T4482]  ? __lock_acquire+0x7d40/0x7d40
[   93.783708][ T4482]  should_fail+0x383/0x4b0
[   93.788124][ T4482]  should_failslab+0x5/0x20
[   93.792611][ T4482]  slab_pre_alloc_hook+0x51/0xc0
[   93.797550][ T4482]  ? security_inode_alloc+0x30/0x110
[   93.802829][ T4482]  kmem_cache_alloc+0x3d/0x280
[   93.807595][ T4482]  security_inode_alloc+0x30/0x110
[   93.812694][ T4482]  inode_init_always+0x8e5/0xc90
[   93.817633][ T4482]  new_inode_pseudo+0x8e/0x210
[   93.822389][ T4482]  new_inode+0x25/0x1d0
[   93.826542][ T4482]  ? start_creating+0x1f5/0x310
[   93.831380][ T4482]  __debugfs_create_file+0x147/0x500
[   93.836687][ T4482]  blk_mq_debugfs_register+0xf1/0x7e0
[   93.842050][ T4482]  ? debugfs_create_dir+0x423/0x4c0
[   93.847272][ T4482]  blk_register_queue+0x204/0x3a0
[   93.852292][ T4482]  device_add_disk+0x60f/0xde0
[   93.857076][ T4482]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   93.862353][ T4482]  mtdblock_add_mtd+0x186/0x240
[   93.867204][ T4482]  blktrans_notify_add+0x95/0xe0
[   93.872128][ T4482]  add_mtd_device+0xd40/0x1260
[   93.876896][ T4482]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   93.882693][ T4482]  ? mtd_cls_resume+0x130/0x130
[   93.887576][ T4482]  mtd_add_partition+0x25d/0x420
[   93.892505][ T4482]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   93.897623][ T4482]  ? shrink_ecclayout+0xab0/0xab0
[   93.902675][ T4482]  ? __might_fault+0xb3/0x110
[   93.907354][ T4482]  ? _copy_from_user+0x111/0x170
[   93.912282][ T4482]  mtdchar_ioctl+0x14cb/0x1d70
[   93.917045][ T4482]  ? mtdchar_close+0x180/0x180
[   93.921800][ T4482]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   93.927780][ T4482]  ? verify_lock_unused+0x140/0x140
[   93.932973][ T4482]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   93.938605][ T4482]  ? rcu_lock_release+0x5/0x20
[   93.943375][ T4482]  ? __mutex_trylock_common+0x15c/0x260
[   93.948917][ T4482]  ? rcu_lock_release+0x20/0x20
[   93.953778][ T4482]  ? kasan_quarantine_put+0xd4/0x210
[   93.959060][ T4482]  ? __mutex_lock_common+0x435/0x2400
[   93.964417][ T4482]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   93.969770][ T4482]  ? mutex_lock_io_nested+0x60/0x60
[   93.974964][ T4482]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   93.980948][ T4482]  mtdchar_unlocked_ioctl+0xad/0xd0
[   93.986131][ T4482]  ? mtdchar_write+0x5a0/0x5a0
[   93.990877][ T4482]  __se_sys_ioctl+0xfa/0x170
[   93.995461][ T4482]  do_syscall_64+0x4c/0xa0
[   93.999875][ T4482]  ? clear_bhb_loop+0x30/0x80
[   94.004570][ T4482]  ? clear_bhb_loop+0x30/0x80
[   94.009250][ T4482]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   94.015141][ T4482] RIP: 0033:0x7fef503c01d9
[   94.019538][ T4482] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   94.039125][ T4482] RSP: 002b:00007fffed71d8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   94.047522][ T4482] RAX: ffffffffffffffda RBX: 00007fef50647fa0 RCX: 00007fef503c01d9
[   94.055483][ T4482] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   94.063460][ T4482] RBP: 00007fef50457888 R08: 0000000000000000 R09: 0000000000000000
[   94.071434][ T4482] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   94.079401][ T4482] R13: 00007fef50647fac R14: 00007fef50647fa0 R15: 00007fef50647fa0
[   94.087537][ T4482]  </TASK>
[   94.092224][ T4482] debugfs: out of free dentries, can not create file 'requeue_list'
[   94.111110][ T4483] 0x000000000000-0x000000010000 : ""
[   94.121764][ T4483] ftl_cs: FTL header not found.
[   94.134198][ T4483] FAULT_INJECTION: forcing a failure.
[   94.134198][ T4483] name failslab, interval 1, probability 0, space 0, times 0
[   94.147171][ T4483] CPU: 0 PID: 4483 Comm: syz.4.51 Not tainted syzkaller #0
[   94.154387][ T4483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   94.164442][ T4483] Call Trace:
[   94.167722][ T4483]  <TASK>
[   94.170660][ T4483]  dump_stack_lvl+0x188/0x250
[   94.175346][ T4483]  ? show_regs_print_info+0x20/0x20
[   94.180554][ T4483]  ? load_image+0x410/0x410
[   94.185072][ T4483]  ? __might_sleep+0xf0/0xf0
[   94.189663][ T4483]  ? __lock_acquire+0x7d40/0x7d40
[   94.194680][ T4483]  should_fail+0x383/0x4b0
[   94.199103][ T4483]  should_failslab+0x5/0x20
[   94.203592][ T4483]  slab_pre_alloc_hook+0x51/0xc0
[   94.208527][ T4483]  ? __kernfs_new_node+0xe3/0x6b0
[   94.213541][ T4483]  kmem_cache_alloc+0x3d/0x280
[   94.218306][ T4483]  __kernfs_new_node+0xe3/0x6b0
[   94.223146][ T4483]  ? __lock_acquire+0x7d40/0x7d40
[   94.228188][ T4483]  ? kernfs_new_node+0x250/0x250
[   94.233147][ T4483]  ? kernfs_activate+0x1eb/0x210
[   94.238083][ T4483]  kernfs_new_node+0x148/0x250
[   94.242839][ T4483]  __kernfs_create_file+0x47/0x2e0
[   94.247949][ T4483]  sysfs_add_file_mode_ns+0x2d2/0x390
[   94.253315][ T4483]  internal_create_group+0x492/0xd00
[   94.258610][ T4483]  ? kobject_init+0x1c0/0x1c0
[   94.263287][ T4483]  ? sysfs_create_group+0x20/0x20
[   94.268311][ T4483]  blk_register_queue+0xdd/0x3a0
[   94.273240][ T4483]  device_add_disk+0x60f/0xde0
[   94.278002][ T4483]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   94.283279][ T4483]  mtdblock_add_mtd+0x186/0x240
[   94.288124][ T4483]  blktrans_notify_add+0x95/0xe0
[   94.293047][ T4483]  add_mtd_device+0xd40/0x1260
[   94.297819][ T4483]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   94.303620][ T4483]  ? mtd_cls_resume+0x130/0x130
[   94.308480][ T4483]  mtd_add_partition+0x25d/0x420
[   94.313422][ T4483]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   94.318537][ T4483]  ? shrink_ecclayout+0xab0/0xab0
[   94.323583][ T4483]  ? __might_fault+0xb3/0x110
[   94.328275][ T4483]  ? _copy_from_user+0x111/0x170
[   94.333204][ T4483]  mtdchar_ioctl+0x14cb/0x1d70
[   94.337970][ T4483]  ? mtdchar_close+0x180/0x180
[   94.342729][ T4483]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   94.348711][ T4483]  ? verify_lock_unused+0x140/0x140
[   94.353894][ T4483]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   94.359509][ T4483]  ? rcu_lock_release+0x5/0x20
[   94.364278][ T4483]  ? __mutex_trylock_common+0x15c/0x260
[   94.369812][ T4483]  ? rcu_lock_release+0x20/0x20
[   94.374648][ T4483]  ? kasan_quarantine_put+0xd4/0x210
[   94.379939][ T4483]  ? __mutex_lock_common+0x435/0x2400
[   94.385299][ T4483]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   94.390654][ T4483]  ? mutex_lock_io_nested+0x60/0x60
[   94.395840][ T4483]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   94.401817][ T4483]  mtdchar_unlocked_ioctl+0xad/0xd0
[   94.407013][ T4483]  ? mtdchar_write+0x5a0/0x5a0
[   94.411767][ T4483]  __se_sys_ioctl+0xfa/0x170
[   94.416361][ T4483]  do_syscall_64+0x4c/0xa0
[   94.420758][ T4483]  ? clear_bhb_loop+0x30/0x80
[   94.425420][ T4483]  ? clear_bhb_loop+0x30/0x80
[   94.430080][ T4483]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   94.435956][ T4483] RIP: 0033:0x7f4f307f11d9
[   94.440354][ T4483] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   94.459955][ T4483] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   94.468356][ T4483] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   94.476317][ T4483] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   94.484285][ T4483] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   94.492259][ T4483] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   94.500227][ T4483] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   94.508198][ T4483]  </TASK>
[   94.524154][ T4483] ------------[ cut here ]------------
[   94.529825][ T4483] WARNING: CPU: 0 PID: 4483 at block/genhd.c:554 device_add_disk+0x8d6/0xde0
[   94.538929][ T4483] Modules linked in:
[   94.543541][ T4483] CPU: 1 PID: 4483 Comm: syz.4.51 Not tainted syzkaller #0
[   94.550871][ T4483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   94.561135][ T4483] RIP: 0010:device_add_disk+0x8d6/0xde0
[   94.567033][ T4483] Code: 04 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 8f 03 00 00 8b 33 48 c7 c7 00 f4 70 8d e8 b1 3d 37 00 eb 05 e8 ea 04 a6 fd <0f> 0b 41 bd 01 00 00 00 44 89 e8 48 83 c4 50 5b 41 5c 41 5d 41 5e
[   94.586779][ T4483] RSP: 0018:ffffc900038bf470 EFLAGS: 00010293
[   94.592948][ T4483] RAX: ffffffff83d31e76 RBX: ffff8880590d5c00 RCX: ffff88807d013b80
[   94.600943][ T4483] RDX: 0000000000000000 RSI: 000000000000001f RDI: 0000000000000103
[   94.608969][ T4483] RBP: 000000000000001f R08: ffff8880779fe1db R09: 1ffff1100ef3fc3b
[   94.617799][ T4483] R10: dffffc0000000000 R11: ffffed100ef3fc3c R12: ffff888057f50040
[   94.625843][ T4483] R13: ffff8880590d5d50 R14: dffffc0000000000 R15: ffff888057f50040
[   94.633844][ T4483] FS:  000055558021b500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
[   94.642840][ T4483] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   94.649448][ T4483] CR2: 000055d9569a40c0 CR3: 000000007ad2a000 CR4: 00000000003506f0
[   94.657439][ T4483] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   94.665462][ T4483] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   94.673473][ T4483] Call Trace:
[   94.676748][ T4483]  <TASK>
[   94.679670][ T4483]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   94.685020][ T4483]  mtdblock_add_mtd+0x186/0x240
[   94.689872][ T4483]  blktrans_notify_add+0x95/0xe0
[   94.694944][ T4483]  add_mtd_device+0xd40/0x1260
[   94.699744][ T4483]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   94.705629][ T4483]  ? mtd_cls_resume+0x130/0x130
[   94.710504][ T4483]  mtd_add_partition+0x25d/0x420
[   94.716073][ T4483]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   94.721198][ T4483]  ? shrink_ecclayout+0xab0/0xab0
[   94.726292][ T4483]  ? __might_fault+0xb3/0x110
[   94.730979][ T4483]  ? _copy_from_user+0x111/0x170
[   94.735950][ T4483]  mtdchar_ioctl+0x14cb/0x1d70
[   94.740714][ T4483]  ? mtdchar_close+0x180/0x180
[   94.745540][ T4483]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   94.751555][ T4483]  ? verify_lock_unused+0x140/0x140
[   94.756795][ T4483]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   94.762481][ T4483]  ? rcu_lock_release+0x5/0x20
[   94.767279][ T4483]  ? __mutex_trylock_common+0x15c/0x260
[   94.772847][ T4483]  ? rcu_lock_release+0x20/0x20
[   94.777699][ T4483]  ? kasan_quarantine_put+0xd4/0x210
[   94.783044][ T4483]  ? __mutex_lock_common+0x435/0x2400
[   94.788422][ T4483]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   94.793823][ T4483]  ? mutex_lock_io_nested+0x60/0x60
[   94.799021][ T4483]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   94.805059][ T4483]  mtdchar_unlocked_ioctl+0xad/0xd0
[   94.810256][ T4483]  ? mtdchar_write+0x5a0/0x5a0
[   94.815652][ T4483]  __se_sys_ioctl+0xfa/0x170
[   94.820255][ T4483]  do_syscall_64+0x4c/0xa0
[   94.824725][ T4483]  ? clear_bhb_loop+0x30/0x80
[   94.829406][ T4483]  ? clear_bhb_loop+0x30/0x80
[   94.834114][ T4483]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   94.840007][ T4483] RIP: 0033:0x7f4f307f11d9
[   94.844469][ T4483] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   94.865925][ T4483] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   94.875209][ T4483] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   94.883480][ T4483] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   94.892031][ T4483] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   94.900012][ T4483] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   94.908181][ T4483] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   94.916186][ T4483]  </TASK>
[   94.919812][ T4483] Kernel panic - not syncing: kernel: panic_on_warn set ...
[   94.927118][ T4483] CPU: 0 PID: 4483 Comm: syz.4.51 Not tainted syzkaller #0
[   94.934301][ T4483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   94.944369][ T4483] Call Trace:
[   94.947643][ T4483]  <TASK>
[   94.950585][ T4483]  dump_stack_lvl+0x188/0x250
[   94.955264][ T4483]  ? show_regs_print_info+0x20/0x20
[   94.960445][ T4483]  ? load_image+0x410/0x410
[   94.964953][ T4483]  panic+0x2f8/0x850
[   94.968853][ T4483]  ? bpf_jit_dump+0xd0/0xd0
[   94.973359][ T4483]  ? device_add_disk+0x8d6/0xde0
[   94.978280][ T4483]  __warn+0x248/0x2b0
[   94.982251][ T4483]  ? device_add_disk+0x8d6/0xde0
[   94.987186][ T4483]  report_bug+0x1b9/0x2e0
[   94.991509][ T4483]  handle_bug+0x3a/0x70
[   94.995664][ T4483]  exc_invalid_op+0x16/0x40
[   95.000152][ T4483]  asm_exc_invalid_op+0x16/0x20
[   95.005012][ T4483] RIP: 0010:device_add_disk+0x8d6/0xde0
[   95.010579][ T4483] Code: 04 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 8f 03 00 00 8b 33 48 c7 c7 00 f4 70 8d e8 b1 3d 37 00 eb 05 e8 ea 04 a6 fd <0f> 0b 41 bd 01 00 00 00 44 89 e8 48 83 c4 50 5b 41 5c 41 5d 41 5e
[   95.030361][ T4483] RSP: 0018:ffffc900038bf470 EFLAGS: 00010293
[   95.036416][ T4483] RAX: ffffffff83d31e76 RBX: ffff8880590d5c00 RCX: ffff88807d013b80
[   95.044379][ T4483] RDX: 0000000000000000 RSI: 000000000000001f RDI: 0000000000000103
[   95.052356][ T4483] RBP: 000000000000001f R08: ffff8880779fe1db R09: 1ffff1100ef3fc3b
[   95.060325][ T4483] R10: dffffc0000000000 R11: ffffed100ef3fc3c R12: ffff888057f50040
[   95.068309][ T4483] R13: ffff8880590d5d50 R14: dffffc0000000000 R15: ffff888057f50040
[   95.076270][ T4483]  ? device_add_disk+0x8d6/0xde0
[   95.081206][ T4483]  add_mtd_blktrans_dev+0xfb1/0x13f0
[   95.086481][ T4483]  mtdblock_add_mtd+0x186/0x240
[   95.091320][ T4483]  blktrans_notify_add+0x95/0xe0
[   95.096258][ T4483]  add_mtd_device+0xd40/0x1260
[   95.101055][ T4483]  ? mtd_pairing_info_to_wunit+0x360/0x360
[   95.106850][ T4483]  ? mtd_cls_resume+0x130/0x130
[   95.111704][ T4483]  mtd_add_partition+0x25d/0x420
[   95.116641][ T4483]  mtdchar_blkpg_ioctl+0x283/0x2b0
[   95.121737][ T4483]  ? shrink_ecclayout+0xab0/0xab0
[   95.126766][ T4483]  ? __might_fault+0xb3/0x110
[   95.131439][ T4483]  ? _copy_from_user+0x111/0x170
[   95.136373][ T4483]  mtdchar_ioctl+0x14cb/0x1d70
[   95.141136][ T4483]  ? mtdchar_close+0x180/0x180
[   95.145887][ T4483]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   95.151860][ T4483]  ? verify_lock_unused+0x140/0x140
[   95.157056][ T4483]  ? __ia32_compat_sys_ioctl+0x910/0x910
[   95.162676][ T4483]  ? rcu_lock_release+0x5/0x20
[   95.167446][ T4483]  ? __mutex_trylock_common+0x15c/0x260
[   95.172994][ T4483]  ? rcu_lock_release+0x20/0x20
[   95.177831][ T4483]  ? kasan_quarantine_put+0xd4/0x210
[   95.183102][ T4483]  ? __mutex_lock_common+0x435/0x2400
[   95.188474][ T4483]  ? mtdchar_unlocked_ioctl+0xa0/0xd0
[   95.193861][ T4483]  ? mutex_lock_io_nested+0x60/0x60
[   95.199058][ T4483]  ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[   95.205032][ T4483]  mtdchar_unlocked_ioctl+0xad/0xd0
[   95.210243][ T4483]  ? mtdchar_write+0x5a0/0x5a0
[   95.214987][ T4483]  __se_sys_ioctl+0xfa/0x170
[   95.219585][ T4483]  do_syscall_64+0x4c/0xa0
[   95.224023][ T4483]  ? clear_bhb_loop+0x30/0x80
[   95.228725][ T4483]  ? clear_bhb_loop+0x30/0x80
[   95.233386][ T4483]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   95.239280][ T4483] RIP: 0033:0x7f4f307f11d9
[   95.243684][ T4483] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
[   95.263296][ T4483] RSP: 002b:00007ffd866195e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   95.271723][ T4483] RAX: ffffffffffffffda RBX: 00007f4f30a78fa0 RCX: 00007f4f307f11d9
[   95.279691][ T4483] RDX: 00002000000000c0 RSI: 0000000000001269 RDI: 0000000000000004
[   95.287645][ T4483] RBP: 00007f4f30888888 R08: 0000000000000000 R09: 0000000000000000
[   95.295600][ T4483] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[   95.303558][ T4483] R13: 00007f4f30a78fac R14: 00007f4f30a78fa0 R15: 00007f4f30a78fa0
[   95.311548][ T4483]  </TASK>
[   95.314695][ T4483] Kernel Offset: disabled
[   95.319130][ T4483] Rebooting in 86400 seconds..