0010
[  200.612968][ T6699] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  200.612981][ T6699] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  200.612993][ T6699] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  200.613004][ T6699] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  200.613015][ T6699] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  200.613042][ T6699]  </TASK>
[  200.613054][ T6699] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  201.006279][ T6701] FAULT_INJECTION: forcing a failure.
[  201.006279][ T6701] name failslab, interval 1, probability 0, space 0, times 0
[  201.019186][ T6701] CPU: 0 UID: 0 PID: 6701 Comm: syz.0.227 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  201.019210][ T6701] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  201.019221][ T6701] Call Trace:
[  201.019229][ T6701]  <TASK>
[  201.019237][ T6701]  dump_stack_lvl+0x241/0x360
[  201.019268][ T6701]  ? __pfx_dump_stack_lvl+0x10/0x10
[  201.019292][ T6701]  ? __pfx__printk+0x10/0x10
[  201.019320][ T6701]  ? __pfx___might_resched+0x10/0x10
[  201.019347][ T6701]  should_fail_ex+0x424/0x570
[  201.019370][ T6701]  should_failslab+0xac/0x100
[  201.019396][ T6701]  kmem_cache_alloc_noprof+0x78/0x390
[  201.019419][ T6701]  ? __kernfs_new_node+0xdf/0x890
[  201.019443][ T6701]  __kernfs_new_node+0xdf/0x890
[  201.019468][ T6701]  ? __lock_acquire+0xad5/0xd80
[  201.019494][ T6701]  ? __pfx___kernfs_new_node+0x10/0x10
[  201.019520][ T6701]  ? kernfs_root+0x1c/0x230
[  201.019539][ T6701]  ? kernfs_root+0x1c/0x230
[  201.019559][ T6701]  kernfs_new_node+0x114/0x220
[  201.019582][ T6701]  kernfs_create_link+0xa5/0x1f0
[  201.019608][ T6701]  sysfs_do_create_link_sd+0x85/0x110
[  201.019628][ T6701]  software_node_notify+0xd9/0x1b0
[  201.019648][ T6701]  device_add+0x513/0xbf0
[  201.019670][ T6701]  ? iommufd_test+0x2efb/0x56a0
[  201.019691][ T6701]  iommufd_test+0x3350/0x56a0
[  201.019722][ T6701]  ? __pfx_iommufd_test+0x10/0x10
[  201.019751][ T6701]  ? __lock_acquire+0xad5/0xd80
[  201.019801][ T6701]  iommufd_fops_ioctl+0x4fc/0x610
[  201.019827][ T6701]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  201.019854][ T6701]  ? __fget_files+0x2a/0x420
[  201.019876][ T6701]  ? __fget_files+0x2a/0x420
[  201.019896][ T6701]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  201.019920][ T6701]  __se_sys_ioctl+0xf1/0x160
[  201.019943][ T6701]  do_syscall_64+0xf3/0x230
[  201.019965][ T6701]  ? clear_bhb_loop+0x45/0xa0
[  201.019987][ T6701]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  201.020003][ T6701] RIP: 0033:0x7f33a0d8d169
[  201.020019][ T6701] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  201.020032][ T6701] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  201.020051][ T6701] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  201.020065][ T6701] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  201.020076][ T6701] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  201.020087][ T6701] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  201.020097][ T6701] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  201.020125][ T6701]  </TASK>
[  201.020874][ T6701] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  201.359783][ T6703] FAULT_INJECTION: forcing a failure.
[  201.359783][ T6703] name failslab, interval 1, probability 0, space 0, times 0
[  201.378715][ T6703] CPU: 1 UID: 0 PID: 6703 Comm: syz.0.228 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  201.378743][ T6703] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  201.378754][ T6703] Call Trace:
[  201.378762][ T6703]  <TASK>
[  201.378770][ T6703]  dump_stack_lvl+0x241/0x360
[  201.378802][ T6703]  ? __pfx_dump_stack_lvl+0x10/0x10
[  201.378826][ T6703]  ? __pfx__printk+0x10/0x10
[  201.378853][ T6703]  ? __pfx___might_resched+0x10/0x10
[  201.378880][ T6703]  should_fail_ex+0x424/0x570
[  201.378903][ T6703]  should_failslab+0xac/0x100
[  201.378930][ T6703]  kmem_cache_alloc_noprof+0x78/0x390
[  201.378953][ T6703]  ? __kernfs_new_node+0xdf/0x890
[  201.378976][ T6703]  __kernfs_new_node+0xdf/0x890
[  201.378994][ T6703]  ? __lock_acquire+0xad5/0xd80
[  201.379019][ T6703]  ? __pfx___kernfs_new_node+0x10/0x10
[  201.379046][ T6703]  ? kernfs_root+0x1c/0x230
[  201.379064][ T6703]  ? kernfs_root+0x1c/0x230
[  201.379084][ T6703]  kernfs_new_node+0x114/0x220
[  201.379108][ T6703]  kernfs_create_link+0xa5/0x1f0
[  201.379154][ T6703]  sysfs_do_create_link_sd+0x85/0x110
[  201.379181][ T6703]  software_node_notify+0xd9/0x1b0
[  201.379203][ T6703]  device_add+0x513/0xbf0
[  201.379224][ T6703]  ? iommufd_test+0x2efb/0x56a0
[  201.379246][ T6703]  iommufd_test+0x3350/0x56a0
[  201.379275][ T6703]  ? __pfx_iommufd_test+0x10/0x10
[  201.379305][ T6703]  ? __lock_acquire+0xad5/0xd80
[  201.379354][ T6703]  iommufd_fops_ioctl+0x4fc/0x610
[  201.379381][ T6703]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  201.379407][ T6703]  ? __fget_files+0x2a/0x420
[  201.379429][ T6703]  ? __fget_files+0x2a/0x420
[  201.379448][ T6703]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  201.379473][ T6703]  __se_sys_ioctl+0xf1/0x160
[  201.379495][ T6703]  do_syscall_64+0xf3/0x230
[  201.379518][ T6703]  ? clear_bhb_loop+0x45/0xa0
[  201.379538][ T6703]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  201.379555][ T6703] RIP: 0033:0x7f33a0d8d169
[  201.379571][ T6703] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  201.379585][ T6703] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  201.379604][ T6703] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  201.379617][ T6703] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  201.379629][ T6703] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  201.379640][ T6703] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  201.379650][ T6703] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  201.379677][ T6703]  </TASK>
[  201.380427][ T6703] iommufd_mock iommufd_mock0: Adding to iommu group 0
2025/04/10 11:56:55 executed programs: 215
[  201.678618][ T6705] FAULT_INJECTION: forcing a failure.
[  201.678618][ T6705] name failslab, interval 1, probability 0, space 0, times 0
[  201.695388][ T6705] CPU: 1 UID: 0 PID: 6705 Comm: syz.0.229 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  201.695415][ T6705] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  201.695426][ T6705] Call Trace:
[  201.695434][ T6705]  <TASK>
[  201.695442][ T6705]  dump_stack_lvl+0x241/0x360
[  201.695475][ T6705]  ? __pfx_dump_stack_lvl+0x10/0x10
[  201.695499][ T6705]  ? __pfx__printk+0x10/0x10
[  201.695526][ T6705]  ? __pfx___might_resched+0x10/0x10
[  201.695552][ T6705]  should_fail_ex+0x424/0x570
[  201.695577][ T6705]  should_failslab+0xac/0x100
[  201.695603][ T6705]  kmem_cache_alloc_noprof+0x78/0x390
[  201.695627][ T6705]  ? __kernfs_new_node+0xdf/0x890
[  201.695650][ T6705]  __kernfs_new_node+0xdf/0x890
[  201.695668][ T6705]  ? __lock_acquire+0xad5/0xd80
[  201.695693][ T6705]  ? __pfx___kernfs_new_node+0x10/0x10
[  201.695720][ T6705]  ? kernfs_root+0x1c/0x230
[  201.695738][ T6705]  ? kernfs_root+0x1c/0x230
[  201.695758][ T6705]  kernfs_new_node+0x114/0x220
[  201.695782][ T6705]  kernfs_create_link+0xa5/0x1f0
[  201.695808][ T6705]  sysfs_do_create_link_sd+0x85/0x110
[  201.695827][ T6705]  software_node_notify+0xd9/0x1b0
[  201.695849][ T6705]  device_add+0x513/0xbf0
[  201.695870][ T6705]  ? iommufd_test+0x2efb/0x56a0
[  201.695891][ T6705]  iommufd_test+0x3350/0x56a0
[  201.695921][ T6705]  ? __pfx_iommufd_test+0x10/0x10
[  201.695950][ T6705]  ? __lock_acquire+0xad5/0xd80
[  201.696000][ T6705]  iommufd_fops_ioctl+0x4fc/0x610
[  201.696027][ T6705]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  201.696052][ T6705]  ? __fget_files+0x2a/0x420
[  201.696074][ T6705]  ? __fget_files+0x2a/0x420
[  201.696093][ T6705]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  201.696117][ T6705]  __se_sys_ioctl+0xf1/0x160
[  201.696139][ T6705]  do_syscall_64+0xf3/0x230
[  201.696161][ T6705]  ? clear_bhb_loop+0x45/0xa0
[  201.696182][ T6705]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  201.696198][ T6705] RIP: 0033:0x7f33a0d8d169
[  201.696216][ T6705] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  201.696229][ T6705] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  201.696248][ T6705] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  201.696261][ T6705] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  201.696273][ T6705] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  201.696283][ T6705] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  201.696294][ T6705] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  201.696321][ T6705]  </TASK>
[  201.697096][ T6705] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  202.014442][ T6707] FAULT_INJECTION: forcing a failure.
[  202.014442][ T6707] name failslab, interval 1, probability 0, space 0, times 0
[  202.062404][ T6707] CPU: 0 UID: 0 PID: 6707 Comm: syz.0.230 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  202.062431][ T6707] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  202.062442][ T6707] Call Trace:
[  202.062449][ T6707]  <TASK>
[  202.062457][ T6707]  dump_stack_lvl+0x241/0x360
[  202.062489][ T6707]  ? __pfx_dump_stack_lvl+0x10/0x10
[  202.062514][ T6707]  ? __pfx__printk+0x10/0x10
[  202.062542][ T6707]  ? __pfx___might_resched+0x10/0x10
[  202.062569][ T6707]  should_fail_ex+0x424/0x570
[  202.062592][ T6707]  should_failslab+0xac/0x100
[  202.062618][ T6707]  kmem_cache_alloc_noprof+0x78/0x390
[  202.062641][ T6707]  ? __kernfs_new_node+0xdf/0x890
[  202.062664][ T6707]  __kernfs_new_node+0xdf/0x890
[  202.062684][ T6707]  ? __lock_acquire+0xad5/0xd80
[  202.062707][ T6707]  ? __pfx___kernfs_new_node+0x10/0x10
[  202.062736][ T6707]  ? kernfs_root+0x1c/0x230
[  202.062755][ T6707]  ? kernfs_root+0x1c/0x230
[  202.062775][ T6707]  kernfs_new_node+0x114/0x220
[  202.062799][ T6707]  kernfs_create_dir_ns+0x43/0x120
[  202.062822][ T6707]  sysfs_create_dir_ns+0x1a2/0x3f0
[  202.062843][ T6707]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  202.062867][ T6707]  kobject_add_internal+0x435/0x8d0
[  202.062898][ T6707]  kobject_add+0x15b/0x230
[  202.062921][ T6707]  ? kobject_put+0x43d/0x480
[  202.062941][ T6707]  ? __pfx_kobject_add+0x10/0x10
[  202.062965][ T6707]  ? bus_get_dev_root+0x127/0x160
[  202.062987][ T6707]  ? get_device_parent+0x405/0x410
[  202.063004][ T6707]  ? device_add+0x318/0xbf0
[  202.063024][ T6707]  device_add+0x4e5/0xbf0
[  202.063044][ T6707]  ? iommufd_test+0x2efb/0x56a0
[  202.063064][ T6707]  iommufd_test+0x3350/0x56a0
[  202.063094][ T6707]  ? __pfx_iommufd_test+0x10/0x10
[  202.063124][ T6707]  ? __lock_acquire+0xad5/0xd80
[  202.063173][ T6707]  iommufd_fops_ioctl+0x4fc/0x610
[  202.063199][ T6707]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  202.063227][ T6707]  ? __fget_files+0x2a/0x420
[  202.063249][ T6707]  ? __fget_files+0x2a/0x420
[  202.063269][ T6707]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  202.063293][ T6707]  __se_sys_ioctl+0xf1/0x160
[  202.063316][ T6707]  do_syscall_64+0xf3/0x230
[  202.063337][ T6707]  ? clear_bhb_loop+0x45/0xa0
[  202.063357][ T6707]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  202.063374][ T6707] RIP: 0033:0x7f33a0d8d169
[  202.063394][ T6707] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  202.063409][ T6707] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  202.063429][ T6707] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  202.063442][ T6707] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  202.063454][ T6707] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  202.063465][ T6707] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  202.063476][ T6707] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  202.063503][ T6707]  </TASK>
[  202.063529][ T6707] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  202.397159][ T6709] FAULT_INJECTION: forcing a failure.
[  202.397159][ T6709] name failslab, interval 1, probability 0, space 0, times 0
[  202.410982][ T6709] CPU: 1 UID: 0 PID: 6709 Comm: syz.0.231 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  202.411008][ T6709] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  202.411019][ T6709] Call Trace:
[  202.411026][ T6709]  <TASK>
[  202.411034][ T6709]  dump_stack_lvl+0x241/0x360
[  202.411067][ T6709]  ? __pfx_dump_stack_lvl+0x10/0x10
[  202.411090][ T6709]  ? __pfx__printk+0x10/0x10
[  202.411118][ T6709]  ? __pfx___might_resched+0x10/0x10
[  202.411143][ T6709]  should_fail_ex+0x424/0x570
[  202.411168][ T6709]  should_failslab+0xac/0x100
[  202.411193][ T6709]  __kmalloc_node_track_caller_noprof+0xe2/0x4d0
[  202.411220][ T6709]  ? kobject_set_name_vargs+0x61/0x120
[  202.411247][ T6709]  kvasprintf+0xe1/0x190
[  202.411275][ T6709]  ? __pfx_kvasprintf+0x10/0x10
[  202.411309][ T6709]  ? kvasprintf_const+0x51/0x170
[  202.411343][ T6709]  kobject_set_name_vargs+0x61/0x120
[  202.411366][ T6709]  dev_set_name+0xd7/0x120
[  202.411387][ T6709]  ? iommufd_test+0x16bd/0x56a0
[  202.411405][ T6709]  ? __pfx_dev_set_name+0x10/0x10
[  202.411422][ T6709]  ? __init_waitqueue_head+0xae/0x150
[  202.411452][ T6709]  ? device_initialize+0x266/0x460
[  202.411471][ T6709]  iommufd_test+0x170c/0x56a0
[  202.411498][ T6709]  ? __pfx_iommufd_test+0x10/0x10
[  202.411524][ T6709]  ? __lock_acquire+0xad5/0xd80
[  202.411573][ T6709]  iommufd_fops_ioctl+0x4fc/0x610
[  202.411600][ T6709]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  202.411627][ T6709]  ? __fget_files+0x2a/0x420
[  202.411649][ T6709]  ? __fget_files+0x2a/0x420
[  202.411670][ T6709]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  202.411695][ T6709]  __se_sys_ioctl+0xf1/0x160
[  202.411718][ T6709]  do_syscall_64+0xf3/0x230
[  202.411740][ T6709]  ? clear_bhb_loop+0x45/0xa0
[  202.411761][ T6709]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  202.411778][ T6709] RIP: 0033:0x7f33a0d8d169
[  202.411794][ T6709] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  202.411808][ T6709] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  202.411828][ T6709] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  202.411840][ T6709] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  202.411852][ T6709] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  202.411863][ T6709] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  202.411874][ T6709] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  202.411902][ T6709]  </TASK>
[  202.797508][ T6711] FAULT_INJECTION: forcing a failure.
[  202.797508][ T6711] name failslab, interval 1, probability 0, space 0, times 0
[  202.810974][ T6711] CPU: 0 UID: 0 PID: 6711 Comm: syz.0.232 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  202.810999][ T6711] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  202.811011][ T6711] Call Trace:
[  202.811018][ T6711]  <TASK>
[  202.811025][ T6711]  dump_stack_lvl+0x241/0x360
[  202.811058][ T6711]  ? __pfx_dump_stack_lvl+0x10/0x10
[  202.811082][ T6711]  ? __pfx__printk+0x10/0x10
[  202.811110][ T6711]  ? __pfx___might_resched+0x10/0x10
[  202.811136][ T6711]  should_fail_ex+0x424/0x570
[  202.811160][ T6711]  should_failslab+0xac/0x100
[  202.811185][ T6711]  kmem_cache_alloc_noprof+0x78/0x390
[  202.811207][ T6711]  ? __kernfs_new_node+0xdf/0x890
[  202.811230][ T6711]  __kernfs_new_node+0xdf/0x890
[  202.811248][ T6711]  ? __lock_acquire+0xad5/0xd80
[  202.811280][ T6711]  ? __pfx___kernfs_new_node+0x10/0x10
[  202.811308][ T6711]  ? kernfs_root+0x1c/0x230
[  202.811326][ T6711]  ? kernfs_root+0x1c/0x230
[  202.811346][ T6711]  kernfs_new_node+0x114/0x220
[  202.811370][ T6711]  kernfs_create_link+0xa5/0x1f0
[  202.811396][ T6711]  sysfs_do_create_link_sd+0x85/0x110
[  202.811416][ T6711]  software_node_notify+0xd9/0x1b0
[  202.811441][ T6711]  device_add+0x513/0xbf0
[  202.811460][ T6711]  ? iommufd_test+0x2efb/0x56a0
[  202.811481][ T6711]  iommufd_test+0x3350/0x56a0
[  202.811507][ T6711]  ? __pfx_iommufd_test+0x10/0x10
[  202.811537][ T6711]  ? __lock_acquire+0xad5/0xd80
[  202.811588][ T6711]  iommufd_fops_ioctl+0x4fc/0x610
[  202.811614][ T6711]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  202.811642][ T6711]  ? __fget_files+0x2a/0x420
[  202.811664][ T6711]  ? __fget_files+0x2a/0x420
[  202.811684][ T6711]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  202.811709][ T6711]  __se_sys_ioctl+0xf1/0x160
[  202.811731][ T6711]  do_syscall_64+0xf3/0x230
[  202.811752][ T6711]  ? clear_bhb_loop+0x45/0xa0
[  202.811773][ T6711]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  202.811790][ T6711] RIP: 0033:0x7f33a0d8d169
[  202.811806][ T6711] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  202.811820][ T6711] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  202.811839][ T6711] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  202.811852][ T6711] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  202.811863][ T6711] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  202.811874][ T6711] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  202.811885][ T6711] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  202.811913][ T6711]  </TASK>
[  203.075572][ T6711] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  203.158786][ T6713] FAULT_INJECTION: forcing a failure.
[  203.158786][ T6713] name failslab, interval 1, probability 0, space 0, times 0
[  203.175536][ T6713] CPU: 1 UID: 0 PID: 6713 Comm: syz.0.233 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  203.175563][ T6713] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  203.175575][ T6713] Call Trace:
[  203.175582][ T6713]  <TASK>
[  203.175591][ T6713]  dump_stack_lvl+0x241/0x360
[  203.175623][ T6713]  ? __pfx_dump_stack_lvl+0x10/0x10
[  203.175647][ T6713]  ? __pfx__printk+0x10/0x10
[  203.175675][ T6713]  ? __pfx___might_resched+0x10/0x10
[  203.175702][ T6713]  should_fail_ex+0x424/0x570
[  203.175726][ T6713]  should_failslab+0xac/0x100
[  203.175750][ T6713]  kmem_cache_alloc_noprof+0x78/0x390
[  203.175773][ T6713]  ? __kernfs_new_node+0xdf/0x890
[  203.175796][ T6713]  __kernfs_new_node+0xdf/0x890
[  203.175814][ T6713]  ? __lock_acquire+0xad5/0xd80
[  203.175838][ T6713]  ? __pfx___kernfs_new_node+0x10/0x10
[  203.175866][ T6713]  ? kernfs_root+0x1c/0x230
[  203.175884][ T6713]  ? kernfs_root+0x1c/0x230
[  203.175904][ T6713]  kernfs_new_node+0x114/0x220
[  203.175927][ T6713]  kernfs_create_link+0xa5/0x1f0
[  203.175954][ T6713]  sysfs_do_create_link_sd+0x85/0x110
[  203.175974][ T6713]  software_node_notify+0xd9/0x1b0
[  203.176003][ T6713]  device_add+0x513/0xbf0
[  203.176024][ T6713]  ? iommufd_test+0x2efb/0x56a0
[  203.176046][ T6713]  iommufd_test+0x3350/0x56a0
[  203.176076][ T6713]  ? __pfx_iommufd_test+0x10/0x10
[  203.176105][ T6713]  ? __lock_acquire+0xad5/0xd80
[  203.176155][ T6713]  iommufd_fops_ioctl+0x4fc/0x610
[  203.176181][ T6713]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  203.176208][ T6713]  ? __fget_files+0x2a/0x420
[  203.176230][ T6713]  ? __fget_files+0x2a/0x420
[  203.176250][ T6713]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  203.176274][ T6713]  __se_sys_ioctl+0xf1/0x160
[  203.176296][ T6713]  do_syscall_64+0xf3/0x230
[  203.176317][ T6713]  ? clear_bhb_loop+0x45/0xa0
[  203.176339][ T6713]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  203.176355][ T6713] RIP: 0033:0x7f33a0d8d169
[  203.176371][ T6713] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  203.176385][ T6713] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  203.176404][ T6713] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  203.176417][ T6713] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  203.176429][ T6713] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  203.176440][ T6713] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  203.176450][ T6713] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  203.176477][ T6713]  </TASK>
[  203.177251][ T6713] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  203.519397][ T6715] FAULT_INJECTION: forcing a failure.
[  203.519397][ T6715] name failslab, interval 1, probability 0, space 0, times 0
[  203.532445][ T6715] CPU: 0 UID: 0 PID: 6715 Comm: syz.0.234 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  203.532469][ T6715] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  203.532480][ T6715] Call Trace:
[  203.532488][ T6715]  <TASK>
[  203.532496][ T6715]  dump_stack_lvl+0x241/0x360
[  203.532528][ T6715]  ? __pfx_dump_stack_lvl+0x10/0x10
[  203.532552][ T6715]  ? __pfx__printk+0x10/0x10
[  203.532580][ T6715]  ? __pfx___might_resched+0x10/0x10
[  203.532606][ T6715]  should_fail_ex+0x424/0x570
[  203.532630][ T6715]  should_failslab+0xac/0x100
[  203.532656][ T6715]  kmem_cache_alloc_noprof+0x78/0x390
[  203.532679][ T6715]  ? __kernfs_new_node+0xdf/0x890
[  203.532702][ T6715]  __kernfs_new_node+0xdf/0x890
[  203.532722][ T6715]  ? __lock_acquire+0xad5/0xd80
[  203.532745][ T6715]  ? __pfx___kernfs_new_node+0x10/0x10
[  203.532772][ T6715]  ? kernfs_root+0x1c/0x230
[  203.532790][ T6715]  ? kernfs_root+0x1c/0x230
[  203.532810][ T6715]  kernfs_new_node+0x114/0x220
[  203.532840][ T6715]  kernfs_create_dir_ns+0x43/0x120
[  203.532863][ T6715]  sysfs_create_dir_ns+0x1a2/0x3f0
[  203.532884][ T6715]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  203.532910][ T6715]  kobject_add_internal+0x435/0x8d0
[  203.532942][ T6715]  kobject_add+0x15b/0x230
[  203.532972][ T6715]  ? kobject_put+0x43d/0x480
[  203.532993][ T6715]  ? __pfx_kobject_add+0x10/0x10
[  203.533016][ T6715]  ? bus_get_dev_root+0x127/0x160
[  203.533037][ T6715]  ? get_device_parent+0x405/0x410
[  203.533055][ T6715]  ? device_add+0x318/0xbf0
[  203.533077][ T6715]  device_add+0x4e5/0xbf0
[  203.533098][ T6715]  ? iommufd_test+0x2efb/0x56a0
[  203.533119][ T6715]  iommufd_test+0x3350/0x56a0
[  203.533149][ T6715]  ? __pfx_iommufd_test+0x10/0x10
[  203.533178][ T6715]  ? __lock_acquire+0xad5/0xd80
[  203.533226][ T6715]  iommufd_fops_ioctl+0x4fc/0x610
[  203.533252][ T6715]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  203.533278][ T6715]  ? __fget_files+0x2a/0x420
[  203.533300][ T6715]  ? __fget_files+0x2a/0x420
[  203.533320][ T6715]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  203.533344][ T6715]  __se_sys_ioctl+0xf1/0x160
[  203.533366][ T6715]  do_syscall_64+0xf3/0x230
[  203.533388][ T6715]  ? clear_bhb_loop+0x45/0xa0
[  203.533409][ T6715]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  203.533425][ T6715] RIP: 0033:0x7f33a0d8d169
[  203.533441][ T6715] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  203.533455][ T6715] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  203.533474][ T6715] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  203.533487][ T6715] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  203.533498][ T6715] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  203.533510][ T6715] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  203.533520][ T6715] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  203.533547][ T6715]  </TASK>
[  203.533573][ T6715] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  203.878343][ T6717] FAULT_INJECTION: forcing a failure.
[  203.878343][ T6717] name failslab, interval 1, probability 0, space 0, times 0
[  203.922632][ T6717] CPU: 0 UID: 0 PID: 6717 Comm: syz.0.235 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  203.922665][ T6717] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  203.922677][ T6717] Call Trace:
[  203.922685][ T6717]  <TASK>
[  203.922692][ T6717]  dump_stack_lvl+0x241/0x360
[  203.922724][ T6717]  ? __pfx_dump_stack_lvl+0x10/0x10
[  203.922749][ T6717]  ? __pfx__printk+0x10/0x10
[  203.922777][ T6717]  ? __pfx___might_resched+0x10/0x10
[  203.922803][ T6717]  should_fail_ex+0x424/0x570
[  203.922827][ T6717]  should_failslab+0xac/0x100
[  203.922852][ T6717]  kmem_cache_alloc_noprof+0x78/0x390
[  203.922880][ T6717]  ? __kernfs_new_node+0xdf/0x890
[  203.922903][ T6717]  __kernfs_new_node+0xdf/0x890
[  203.922921][ T6717]  ? __lock_acquire+0xad5/0xd80
[  203.922946][ T6717]  ? __pfx___kernfs_new_node+0x10/0x10
[  203.922973][ T6717]  ? kernfs_root+0x1c/0x230
[  203.922999][ T6717]  ? kernfs_root+0x1c/0x230
[  203.923019][ T6717]  kernfs_new_node+0x114/0x220
[  203.923043][ T6717]  kernfs_create_link+0xa5/0x1f0
[  203.923069][ T6717]  sysfs_do_create_link_sd+0x85/0x110
[  203.923090][ T6717]  software_node_notify+0xd9/0x1b0
[  203.923112][ T6717]  device_add+0x513/0xbf0
[  203.923134][ T6717]  ? iommufd_test+0x2efb/0x56a0
[  203.923155][ T6717]  iommufd_test+0x3350/0x56a0
[  203.923185][ T6717]  ? __pfx_iommufd_test+0x10/0x10
[  203.923215][ T6717]  ? __lock_acquire+0xad5/0xd80
[  203.923264][ T6717]  iommufd_fops_ioctl+0x4fc/0x610
[  203.923291][ T6717]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  203.923318][ T6717]  ? __fget_files+0x2a/0x420
[  203.923340][ T6717]  ? __fget_files+0x2a/0x420
[  203.923360][ T6717]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  203.923385][ T6717]  __se_sys_ioctl+0xf1/0x160
[  203.923408][ T6717]  do_syscall_64+0xf3/0x230
[  203.923429][ T6717]  ? clear_bhb_loop+0x45/0xa0
[  203.923451][ T6717]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  203.923468][ T6717] RIP: 0033:0x7f33a0d8d169
[  203.923484][ T6717] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  203.923498][ T6717] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  203.923517][ T6717] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  203.923530][ T6717] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  203.923542][ T6717] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  203.923553][ T6717] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  203.923563][ T6717] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  203.923592][ T6717]  </TASK>
[  203.925197][ T6717] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  204.258895][ T6719] FAULT_INJECTION: forcing a failure.
[  204.258895][ T6719] name failslab, interval 1, probability 0, space 0, times 0
[  204.275844][ T6719] CPU: 1 UID: 0 PID: 6719 Comm: syz.0.236 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  204.275873][ T6719] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  204.275896][ T6719] Call Trace:
[  204.275903][ T6719]  <TASK>
[  204.275911][ T6719]  dump_stack_lvl+0x241/0x360
[  204.275944][ T6719]  ? __pfx_dump_stack_lvl+0x10/0x10
[  204.275969][ T6719]  ? __pfx__printk+0x10/0x10
[  204.275997][ T6719]  ? __pfx___might_resched+0x10/0x10
[  204.276023][ T6719]  should_fail_ex+0x424/0x570
[  204.276047][ T6719]  should_failslab+0xac/0x100
[  204.276073][ T6719]  kmem_cache_alloc_noprof+0x78/0x390
[  204.276096][ T6719]  ? __kernfs_new_node+0xdf/0x890
[  204.276119][ T6719]  __kernfs_new_node+0xdf/0x890
[  204.276138][ T6719]  ? __lock_acquire+0xad5/0xd80
[  204.276161][ T6719]  ? __pfx___kernfs_new_node+0x10/0x10
[  204.276190][ T6719]  ? kernfs_root+0x1c/0x230
[  204.276209][ T6719]  ? kernfs_root+0x1c/0x230
[  204.276228][ T6719]  kernfs_new_node+0x114/0x220
[  204.276252][ T6719]  kernfs_create_dir_ns+0x43/0x120
[  204.276275][ T6719]  sysfs_create_dir_ns+0x1a2/0x3f0
[  204.276296][ T6719]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  204.276323][ T6719]  kobject_add_internal+0x435/0x8d0
[  204.276354][ T6719]  kobject_add+0x15b/0x230
[  204.276378][ T6719]  ? kobject_put+0x43d/0x480
[  204.276398][ T6719]  ? __pfx_kobject_add+0x10/0x10
[  204.276421][ T6719]  ? bus_get_dev_root+0x127/0x160
[  204.276443][ T6719]  ? get_device_parent+0x405/0x410
[  204.276461][ T6719]  ? device_add+0x318/0xbf0
[  204.276482][ T6719]  device_add+0x4e5/0xbf0
[  204.276503][ T6719]  ? iommufd_test+0x2efb/0x56a0
[  204.276524][ T6719]  iommufd_test+0x3350/0x56a0
[  204.276553][ T6719]  ? __pfx_iommufd_test+0x10/0x10
[  204.276582][ T6719]  ? __lock_acquire+0xad5/0xd80
[  204.276631][ T6719]  iommufd_fops_ioctl+0x4fc/0x610
[  204.276658][ T6719]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  204.276685][ T6719]  ? __fget_files+0x2a/0x420
[  204.276707][ T6719]  ? __fget_files+0x2a/0x420
[  204.276728][ T6719]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  204.276752][ T6719]  __se_sys_ioctl+0xf1/0x160
[  204.276775][ T6719]  do_syscall_64+0xf3/0x230
[  204.276796][ T6719]  ? clear_bhb_loop+0x45/0xa0
[  204.276816][ T6719]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  204.276833][ T6719] RIP: 0033:0x7f33a0d8d169
[  204.276848][ T6719] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  204.276862][ T6719] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  204.276888][ T6719] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  204.276900][ T6719] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  204.276911][ T6719] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  204.276922][ T6719] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  204.276932][ T6719] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  204.276960][ T6719]  </TASK>
[  204.276986][ T6719] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  204.618051][ T6721] FAULT_INJECTION: forcing a failure.
[  204.618051][ T6721] name failslab, interval 1, probability 0, space 0, times 0
[  204.630905][ T6721] CPU: 1 UID: 0 PID: 6721 Comm: syz.0.237 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  204.630929][ T6721] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  204.630940][ T6721] Call Trace:
[  204.630948][ T6721]  <TASK>
[  204.630956][ T6721]  dump_stack_lvl+0x241/0x360
[  204.630988][ T6721]  ? __pfx_dump_stack_lvl+0x10/0x10
[  204.631013][ T6721]  ? __pfx__printk+0x10/0x10
[  204.631040][ T6721]  ? __pfx___might_resched+0x10/0x10
[  204.631066][ T6721]  should_fail_ex+0x424/0x570
[  204.631098][ T6721]  should_failslab+0xac/0x100
[  204.631125][ T6721]  kmem_cache_alloc_noprof+0x78/0x390
[  204.631148][ T6721]  ? __kernfs_new_node+0xdf/0x890
[  204.631171][ T6721]  __kernfs_new_node+0xdf/0x890
[  204.631189][ T6721]  ? __lock_acquire+0xad5/0xd80
[  204.631215][ T6721]  ? __pfx___kernfs_new_node+0x10/0x10
[  204.631241][ T6721]  ? kernfs_root+0x1c/0x230
[  204.631260][ T6721]  ? kernfs_root+0x1c/0x230
[  204.631279][ T6721]  kernfs_new_node+0x114/0x220
[  204.631302][ T6721]  kernfs_create_link+0xa5/0x1f0
[  204.631329][ T6721]  sysfs_do_create_link_sd+0x85/0x110
[  204.631349][ T6721]  software_node_notify+0xd9/0x1b0
[  204.631371][ T6721]  device_add+0x513/0xbf0
[  204.631393][ T6721]  ? iommufd_test+0x2efb/0x56a0
[  204.631414][ T6721]  iommufd_test+0x3350/0x56a0
[  204.631446][ T6721]  ? __pfx_iommufd_test+0x10/0x10
[  204.631474][ T6721]  ? __lock_acquire+0xad5/0xd80
[  204.631519][ T6721]  iommufd_fops_ioctl+0x4fc/0x610
[  204.631543][ T6721]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  204.631569][ T6721]  ? __fget_files+0x2a/0x420
[  204.631589][ T6721]  ? __fget_files+0x2a/0x420
[  204.631606][ T6721]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  204.631627][ T6721]  __se_sys_ioctl+0xf1/0x160
[  204.631649][ T6721]  do_syscall_64+0xf3/0x230
[  204.631669][ T6721]  ? clear_bhb_loop+0x45/0xa0
[  204.631689][ T6721]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  204.631705][ T6721] RIP: 0033:0x7f33a0d8d169
[  204.631720][ T6721] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  204.631733][ T6721] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  204.631752][ T6721] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  204.631765][ T6721] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  204.631775][ T6721] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  204.631786][ T6721] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  204.631796][ T6721] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  204.631823][ T6721]  </TASK>
[  204.898381][ T6721] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  204.942212][ T6723] FAULT_INJECTION: forcing a failure.
[  204.942212][ T6723] name failslab, interval 1, probability 0, space 0, times 0
[  204.955172][ T6723] CPU: 0 UID: 0 PID: 6723 Comm: syz.0.238 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  204.955198][ T6723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  204.955209][ T6723] Call Trace:
[  204.955217][ T6723]  <TASK>
[  204.955225][ T6723]  dump_stack_lvl+0x241/0x360
[  204.955257][ T6723]  ? __pfx_dump_stack_lvl+0x10/0x10
[  204.955281][ T6723]  ? __pfx__printk+0x10/0x10
[  204.955309][ T6723]  ? __pfx___might_resched+0x10/0x10
[  204.955335][ T6723]  should_fail_ex+0x424/0x570
[  204.955360][ T6723]  should_failslab+0xac/0x100
[  204.955386][ T6723]  kmem_cache_alloc_noprof+0x78/0x390
[  204.955409][ T6723]  ? __kernfs_new_node+0xdf/0x890
[  204.955432][ T6723]  __kernfs_new_node+0xdf/0x890
[  204.955452][ T6723]  ? __lock_acquire+0xad5/0xd80
[  204.955474][ T6723]  ? __pfx___kernfs_new_node+0x10/0x10
[  204.955503][ T6723]  ? kernfs_root+0x1c/0x230
[  204.955522][ T6723]  ? kernfs_root+0x1c/0x230
[  204.955541][ T6723]  kernfs_new_node+0x114/0x220
[  204.955565][ T6723]  kernfs_create_dir_ns+0x43/0x120
[  204.955588][ T6723]  sysfs_create_dir_ns+0x1a2/0x3f0
[  204.955609][ T6723]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  204.955635][ T6723]  kobject_add_internal+0x435/0x8d0
[  204.955666][ T6723]  kobject_add+0x15b/0x230
[  204.955689][ T6723]  ? kobject_put+0x43d/0x480
[  204.955709][ T6723]  ? __pfx_kobject_add+0x10/0x10
[  204.955732][ T6723]  ? bus_get_dev_root+0x127/0x160
[  204.955754][ T6723]  ? get_device_parent+0x405/0x410
[  204.955782][ T6723]  ? device_add+0x318/0xbf0
[  204.955804][ T6723]  device_add+0x4e5/0xbf0
[  204.955824][ T6723]  ? iommufd_test+0x2efb/0x56a0
[  204.955846][ T6723]  iommufd_test+0x3350/0x56a0
[  204.955875][ T6723]  ? __pfx_iommufd_test+0x10/0x10
[  204.955905][ T6723]  ? __lock_acquire+0xad5/0xd80
[  204.955953][ T6723]  iommufd_fops_ioctl+0x4fc/0x610
[  204.955980][ T6723]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  204.956007][ T6723]  ? __fget_files+0x2a/0x420
[  204.956028][ T6723]  ? __fget_files+0x2a/0x420
[  204.956048][ T6723]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  204.956072][ T6723]  __se_sys_ioctl+0xf1/0x160
[  204.956096][ T6723]  do_syscall_64+0xf3/0x230
[  204.956116][ T6723]  ? clear_bhb_loop+0x45/0xa0
[  204.956137][ T6723]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  204.956154][ T6723] RIP: 0033:0x7f33a0d8d169
[  204.956170][ T6723] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  204.956185][ T6723] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  204.956205][ T6723] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  204.956218][ T6723] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  204.956229][ T6723] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  204.956240][ T6723] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  204.956251][ T6723] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  204.956278][ T6723]  </TASK>
[  204.956305][ T6723] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  205.341841][ T6725] FAULT_INJECTION: forcing a failure.
[  205.341841][ T6725] name failslab, interval 1, probability 0, space 0, times 0
[  205.391621][ T6725] CPU: 0 UID: 0 PID: 6725 Comm: syz.0.239 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  205.391650][ T6725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  205.391661][ T6725] Call Trace:
[  205.391668][ T6725]  <TASK>
[  205.391677][ T6725]  dump_stack_lvl+0x241/0x360
[  205.391710][ T6725]  ? __pfx_dump_stack_lvl+0x10/0x10
[  205.391743][ T6725]  ? __pfx__printk+0x10/0x10
[  205.391771][ T6725]  ? __pfx___might_resched+0x10/0x10
[  205.391798][ T6725]  should_fail_ex+0x424/0x570
[  205.391822][ T6725]  should_failslab+0xac/0x100
[  205.391847][ T6725]  kmem_cache_alloc_noprof+0x78/0x390
[  205.391870][ T6725]  ? __kernfs_new_node+0xdf/0x890
[  205.391893][ T6725]  __kernfs_new_node+0xdf/0x890
[  205.391911][ T6725]  ? __lock_acquire+0xad5/0xd80
[  205.391937][ T6725]  ? __pfx___kernfs_new_node+0x10/0x10
[  205.391964][ T6725]  ? kernfs_root+0x1c/0x230
[  205.391982][ T6725]  ? kernfs_root+0x1c/0x230
[  205.392001][ T6725]  kernfs_new_node+0x114/0x220
[  205.392025][ T6725]  kernfs_create_link+0xa5/0x1f0
[  205.392051][ T6725]  sysfs_do_create_link_sd+0x85/0x110
[  205.392072][ T6725]  software_node_notify+0xd9/0x1b0
[  205.392093][ T6725]  device_add+0x513/0xbf0
[  205.392114][ T6725]  ? iommufd_test+0x2efb/0x56a0
[  205.392135][ T6725]  iommufd_test+0x3350/0x56a0
[  205.392165][ T6725]  ? __pfx_iommufd_test+0x10/0x10
[  205.392195][ T6725]  ? __lock_acquire+0xad5/0xd80
[  205.392244][ T6725]  iommufd_fops_ioctl+0x4fc/0x610
[  205.392271][ T6725]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  205.392298][ T6725]  ? __fget_files+0x2a/0x420
[  205.392320][ T6725]  ? __fget_files+0x2a/0x420
[  205.392340][ T6725]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  205.392365][ T6725]  __se_sys_ioctl+0xf1/0x160
[  205.392388][ T6725]  do_syscall_64+0xf3/0x230
[  205.392410][ T6725]  ? clear_bhb_loop+0x45/0xa0
[  205.392431][ T6725]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  205.392448][ T6725] RIP: 0033:0x7f33a0d8d169
[  205.392464][ T6725] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  205.392478][ T6725] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  205.392498][ T6725] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  205.392511][ T6725] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  205.392522][ T6725] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  205.392533][ T6725] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  205.392544][ T6725] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  205.392572][ T6725]  </TASK>
[  205.393352][ T6725] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  205.738399][ T6727] FAULT_INJECTION: forcing a failure.
[  205.738399][ T6727] name failslab, interval 1, probability 0, space 0, times 0
[  205.784251][ T6727] CPU: 1 UID: 0 PID: 6727 Comm: syz.0.240 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  205.784279][ T6727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  205.784292][ T6727] Call Trace:
[  205.784299][ T6727]  <TASK>
[  205.784308][ T6727]  dump_stack_lvl+0x241/0x360
[  205.784340][ T6727]  ? __pfx_dump_stack_lvl+0x10/0x10
[  205.784364][ T6727]  ? __pfx__printk+0x10/0x10
[  205.784392][ T6727]  ? __pfx___might_resched+0x10/0x10
[  205.784418][ T6727]  should_fail_ex+0x424/0x570
[  205.784442][ T6727]  should_failslab+0xac/0x100
[  205.784468][ T6727]  kmem_cache_alloc_noprof+0x78/0x390
[  205.784491][ T6727]  ? __kernfs_new_node+0xdf/0x890
[  205.784514][ T6727]  __kernfs_new_node+0xdf/0x890
[  205.784532][ T6727]  ? __lock_acquire+0xad5/0xd80
[  205.784557][ T6727]  ? __pfx___kernfs_new_node+0x10/0x10
[  205.784584][ T6727]  ? kernfs_root+0x1c/0x230
[  205.784603][ T6727]  ? kernfs_root+0x1c/0x230
[  205.784623][ T6727]  kernfs_new_node+0x114/0x220
[  205.784647][ T6727]  kernfs_create_link+0xa5/0x1f0
[  205.784673][ T6727]  sysfs_do_create_link_sd+0x85/0x110
[  205.784699][ T6727]  software_node_notify+0xd9/0x1b0
[  205.784721][ T6727]  device_add+0x513/0xbf0
[  205.784742][ T6727]  ? iommufd_test+0x2efb/0x56a0
[  205.784763][ T6727]  iommufd_test+0x3350/0x56a0
[  205.784794][ T6727]  ? __pfx_iommufd_test+0x10/0x10
[  205.784823][ T6727]  ? __lock_acquire+0xad5/0xd80
[  205.784873][ T6727]  iommufd_fops_ioctl+0x4fc/0x610
[  205.784899][ T6727]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  205.784927][ T6727]  ? __fget_files+0x2a/0x420
[  205.784948][ T6727]  ? __fget_files+0x2a/0x420
[  205.784968][ T6727]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  205.784992][ T6727]  __se_sys_ioctl+0xf1/0x160
[  205.785015][ T6727]  do_syscall_64+0xf3/0x230
[  205.785036][ T6727]  ? clear_bhb_loop+0x45/0xa0
[  205.785057][ T6727]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  205.785074][ T6727] RIP: 0033:0x7f33a0d8d169
[  205.785090][ T6727] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  205.785104][ T6727] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  205.785123][ T6727] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  205.785136][ T6727] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  205.785147][ T6727] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  205.785159][ T6727] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  205.785168][ T6727] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  205.785194][ T6727]  </TASK>
[  205.785969][ T6727] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  206.120206][ T6729] FAULT_INJECTION: forcing a failure.
[  206.120206][ T6729] name failslab, interval 1, probability 0, space 0, times 0
[  206.143335][ T6729] CPU: 0 UID: 0 PID: 6729 Comm: syz.0.241 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  206.143362][ T6729] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  206.143373][ T6729] Call Trace:
[  206.143380][ T6729]  <TASK>
[  206.143389][ T6729]  dump_stack_lvl+0x241/0x360
[  206.143422][ T6729]  ? __pfx_dump_stack_lvl+0x10/0x10
[  206.143446][ T6729]  ? __pfx__printk+0x10/0x10
[  206.143474][ T6729]  ? __pfx___might_resched+0x10/0x10
[  206.143500][ T6729]  should_fail_ex+0x424/0x570
[  206.143524][ T6729]  should_failslab+0xac/0x100
[  206.143550][ T6729]  kmem_cache_alloc_noprof+0x78/0x390
[  206.143572][ T6729]  ? __kernfs_new_node+0xdf/0x890
[  206.143596][ T6729]  __kernfs_new_node+0xdf/0x890
[  206.143615][ T6729]  ? __lock_acquire+0xad5/0xd80
[  206.143638][ T6729]  ? __pfx___kernfs_new_node+0x10/0x10
[  206.143668][ T6729]  ? kernfs_root+0x1c/0x230
[  206.143686][ T6729]  ? kernfs_root+0x1c/0x230
[  206.143707][ T6729]  kernfs_new_node+0x114/0x220
[  206.143730][ T6729]  kernfs_create_dir_ns+0x43/0x120
[  206.143753][ T6729]  sysfs_create_dir_ns+0x1a2/0x3f0
[  206.143775][ T6729]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  206.143801][ T6729]  kobject_add_internal+0x435/0x8d0
[  206.143833][ T6729]  kobject_add+0x15b/0x230
[  206.143856][ T6729]  ? kobject_put+0x43d/0x480
[  206.143877][ T6729]  ? __pfx_kobject_add+0x10/0x10
[  206.143906][ T6729]  ? bus_get_dev_root+0x127/0x160
[  206.143928][ T6729]  ? get_device_parent+0x405/0x410
[  206.143946][ T6729]  ? device_add+0x318/0xbf0
[  206.143968][ T6729]  device_add+0x4e5/0xbf0
[  206.143988][ T6729]  ? iommufd_test+0x2efb/0x56a0
[  206.144009][ T6729]  iommufd_test+0x3350/0x56a0
[  206.144039][ T6729]  ? __pfx_iommufd_test+0x10/0x10
[  206.144069][ T6729]  ? __lock_acquire+0xad5/0xd80
[  206.144118][ T6729]  iommufd_fops_ioctl+0x4fc/0x610
[  206.144144][ T6729]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  206.144171][ T6729]  ? __fget_files+0x2a/0x420
[  206.144193][ T6729]  ? __fget_files+0x2a/0x420
[  206.144213][ T6729]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  206.144238][ T6729]  __se_sys_ioctl+0xf1/0x160
[  206.144260][ T6729]  do_syscall_64+0xf3/0x230
[  206.144281][ T6729]  ? clear_bhb_loop+0x45/0xa0
[  206.144302][ T6729]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  206.144319][ T6729] RIP: 0033:0x7f33a0d8d169
[  206.144336][ T6729] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  206.144350][ T6729] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  206.144370][ T6729] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  206.144382][ T6729] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  206.144394][ T6729] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  206.144406][ T6729] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  206.144416][ T6729] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  206.144444][ T6729]  </TASK>
[  206.144470][ T6729] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  206.487791][ T6731] FAULT_INJECTION: forcing a failure.
[  206.487791][ T6731] name failslab, interval 1, probability 0, space 0, times 0
[  206.541123][ T6731] CPU: 1 UID: 0 PID: 6731 Comm: syz.0.242 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  206.541151][ T6731] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  206.541164][ T6731] Call Trace:
[  206.541171][ T6731]  <TASK>
[  206.541178][ T6731]  dump_stack_lvl+0x241/0x360
[  206.541212][ T6731]  ? __pfx_dump_stack_lvl+0x10/0x10
[  206.541235][ T6731]  ? __pfx__printk+0x10/0x10
[  206.541263][ T6731]  ? __pfx___might_resched+0x10/0x10
[  206.541290][ T6731]  should_fail_ex+0x424/0x570
[  206.541314][ T6731]  should_failslab+0xac/0x100
[  206.541340][ T6731]  kmem_cache_alloc_noprof+0x78/0x390
[  206.541363][ T6731]  ? __kernfs_new_node+0xdf/0x890
[  206.541386][ T6731]  __kernfs_new_node+0xdf/0x890
[  206.541404][ T6731]  ? __lock_acquire+0xad5/0xd80
[  206.541435][ T6731]  ? __pfx___kernfs_new_node+0x10/0x10
[  206.541457][ T6731]  ? kernfs_root+0x1c/0x230
[  206.541473][ T6731]  ? kernfs_root+0x1c/0x230
[  206.541492][ T6731]  kernfs_new_node+0x114/0x220
[  206.541513][ T6731]  kernfs_create_link+0xa5/0x1f0
[  206.541538][ T6731]  sysfs_do_create_link_sd+0x85/0x110
[  206.541559][ T6731]  software_node_notify+0xd9/0x1b0
[  206.541581][ T6731]  device_add+0x513/0xbf0
[  206.541602][ T6731]  ? iommufd_test+0x2efb/0x56a0
[  206.541623][ T6731]  iommufd_test+0x3350/0x56a0
[  206.541662][ T6731]  ? __pfx_iommufd_test+0x10/0x10
[  206.541691][ T6731]  ? __lock_acquire+0xad5/0xd80
[  206.541741][ T6731]  iommufd_fops_ioctl+0x4fc/0x610
[  206.541767][ T6731]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  206.541795][ T6731]  ? __fget_files+0x2a/0x420
[  206.541816][ T6731]  ? __fget_files+0x2a/0x420
[  206.541837][ T6731]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  206.541862][ T6731]  __se_sys_ioctl+0xf1/0x160
[  206.541885][ T6731]  do_syscall_64+0xf3/0x230
[  206.541907][ T6731]  ? clear_bhb_loop+0x45/0xa0
[  206.541928][ T6731]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  206.541944][ T6731] RIP: 0033:0x7f33a0d8d169
[  206.541960][ T6731] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  206.541975][ T6731] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  206.541994][ T6731] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  206.542007][ T6731] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  206.542019][ T6731] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  206.542030][ T6731] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  206.542041][ T6731] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  206.542069][ T6731]  </TASK>
[  206.812890][ T6731] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  206.857978][ T6733] FAULT_INJECTION: forcing a failure.
[  206.857978][ T6733] name failslab, interval 1, probability 0, space 0, times 0
[  206.870801][ T6733] CPU: 0 UID: 0 PID: 6733 Comm: syz.0.243 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  206.870825][ T6733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  206.870836][ T6733] Call Trace:
[  206.870844][ T6733]  <TASK>
[  206.870852][ T6733]  dump_stack_lvl+0x241/0x360
[  206.870884][ T6733]  ? __pfx_dump_stack_lvl+0x10/0x10
[  206.870909][ T6733]  ? __pfx__printk+0x10/0x10
[  206.870936][ T6733]  ? __pfx___might_resched+0x10/0x10
[  206.870963][ T6733]  should_fail_ex+0x424/0x570
[  206.870987][ T6733]  should_failslab+0xac/0x100
[  206.871014][ T6733]  kmem_cache_alloc_noprof+0x78/0x390
[  206.871037][ T6733]  ? __kernfs_new_node+0xdf/0x890
[  206.871060][ T6733]  __kernfs_new_node+0xdf/0x890
[  206.871078][ T6733]  ? __lock_acquire+0xad5/0xd80
[  206.871103][ T6733]  ? __pfx___kernfs_new_node+0x10/0x10
[  206.871131][ T6733]  ? kernfs_root+0x1c/0x230
[  206.871149][ T6733]  ? kernfs_root+0x1c/0x230
[  206.871169][ T6733]  kernfs_new_node+0x114/0x220
[  206.871192][ T6733]  kernfs_create_link+0xa5/0x1f0
[  206.871219][ T6733]  sysfs_do_create_link_sd+0x85/0x110
[  206.871239][ T6733]  software_node_notify+0xd9/0x1b0
[  206.871259][ T6733]  device_add+0x513/0xbf0
[  206.871278][ T6733]  ? iommufd_test+0x2efb/0x56a0
[  206.871297][ T6733]  iommufd_test+0x3350/0x56a0
[  206.871326][ T6733]  ? __pfx_iommufd_test+0x10/0x10
[  206.871354][ T6733]  ? __lock_acquire+0xad5/0xd80
[  206.871402][ T6733]  iommufd_fops_ioctl+0x4fc/0x610
[  206.871425][ T6733]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  206.871455][ T6733]  ? __fget_files+0x2a/0x420
[  206.871474][ T6733]  ? __fget_files+0x2a/0x420
[  206.871494][ T6733]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  206.871515][ T6733]  __se_sys_ioctl+0xf1/0x160
[  206.871538][ T6733]  do_syscall_64+0xf3/0x230
[  206.871560][ T6733]  ? clear_bhb_loop+0x45/0xa0
[  206.871581][ T6733]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  206.871597][ T6733] RIP: 0033:0x7f33a0d8d169
[  206.871614][ T6733] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  206.871636][ T6733] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  206.871655][ T6733] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  206.871668][ T6733] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  206.871680][ T6733] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  206.871691][ T6733] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  206.871702][ T6733] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  206.871730][ T6733]  </TASK>
[  207.133604][ T6733] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  207.184636][ T6735] FAULT_INJECTION: forcing a failure.
[  207.184636][ T6735] name failslab, interval 1, probability 0, space 0, times 0
[  207.199556][ T6735] CPU: 1 UID: 0 PID: 6735 Comm: syz.0.244 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  207.199582][ T6735] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  207.199594][ T6735] Call Trace:
[  207.199602][ T6735]  <TASK>
[  207.199610][ T6735]  dump_stack_lvl+0x241/0x360
[  207.199642][ T6735]  ? __pfx_dump_stack_lvl+0x10/0x10
[  207.199666][ T6735]  ? __pfx__printk+0x10/0x10
[  207.199694][ T6735]  ? __pfx___might_resched+0x10/0x10
[  207.199721][ T6735]  should_fail_ex+0x424/0x570
[  207.199745][ T6735]  should_failslab+0xac/0x100
[  207.199770][ T6735]  kmem_cache_alloc_noprof+0x78/0x390
[  207.199801][ T6735]  ? __kernfs_new_node+0xdf/0x890
[  207.199825][ T6735]  __kernfs_new_node+0xdf/0x890
[  207.199842][ T6735]  ? __lock_acquire+0xad5/0xd80
[  207.199868][ T6735]  ? __pfx___kernfs_new_node+0x10/0x10
[  207.199894][ T6735]  ? kernfs_root+0x1c/0x230
[  207.199912][ T6735]  ? kernfs_root+0x1c/0x230
[  207.199932][ T6735]  kernfs_new_node+0x114/0x220
[  207.199956][ T6735]  kernfs_create_link+0xa5/0x1f0
[  207.199982][ T6735]  sysfs_do_create_link_sd+0x85/0x110
[  207.200003][ T6735]  software_node_notify+0xd9/0x1b0
[  207.200024][ T6735]  device_add+0x513/0xbf0
[  207.200045][ T6735]  ? iommufd_test+0x2efb/0x56a0
[  207.200066][ T6735]  iommufd_test+0x3350/0x56a0
[  207.200096][ T6735]  ? __pfx_iommufd_test+0x10/0x10
[  207.200126][ T6735]  ? __lock_acquire+0xad5/0xd80
[  207.200175][ T6735]  iommufd_fops_ioctl+0x4fc/0x610
[  207.200201][ T6735]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  207.200228][ T6735]  ? __fget_files+0x2a/0x420
[  207.200250][ T6735]  ? __fget_files+0x2a/0x420
[  207.200271][ T6735]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  207.200295][ T6735]  __se_sys_ioctl+0xf1/0x160
[  207.200318][ T6735]  do_syscall_64+0xf3/0x230
[  207.200339][ T6735]  ? clear_bhb_loop+0x45/0xa0
[  207.200361][ T6735]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
2025/04/10 11:57:00 executed programs: 229
[  207.200378][ T6735] RIP: 0033:0x7f33a0d8d169
[  207.200394][ T6735] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  207.200408][ T6735] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  207.200427][ T6735] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  207.200439][ T6735] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  207.200451][ T6735] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  207.200462][ T6735] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  207.200472][ T6735] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  207.200500][ T6735]  </TASK>
[  207.201329][ T6735] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  207.538542][ T6737] FAULT_INJECTION: forcing a failure.
[  207.538542][ T6737] name failslab, interval 1, probability 0, space 0, times 0
[  207.554136][ T6737] CPU: 1 UID: 0 PID: 6737 Comm: syz.0.245 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  207.554163][ T6737] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  207.554175][ T6737] Call Trace:
[  207.554182][ T6737]  <TASK>
[  207.554190][ T6737]  dump_stack_lvl+0x241/0x360
[  207.554223][ T6737]  ? __pfx_dump_stack_lvl+0x10/0x10
[  207.554247][ T6737]  ? __pfx__printk+0x10/0x10
[  207.554282][ T6737]  ? __pfx___might_resched+0x10/0x10
[  207.554309][ T6737]  should_fail_ex+0x424/0x570
[  207.554332][ T6737]  should_failslab+0xac/0x100
[  207.554357][ T6737]  kmem_cache_alloc_noprof+0x78/0x390
[  207.554380][ T6737]  ? __kernfs_new_node+0xdf/0x890
[  207.554404][ T6737]  __kernfs_new_node+0xdf/0x890
[  207.554423][ T6737]  ? __lock_acquire+0xad5/0xd80
[  207.554446][ T6737]  ? __pfx___kernfs_new_node+0x10/0x10
[  207.554475][ T6737]  ? kernfs_root+0x1c/0x230
[  207.554493][ T6737]  ? kernfs_root+0x1c/0x230
[  207.554511][ T6737]  kernfs_new_node+0x114/0x220
[  207.554534][ T6737]  kernfs_create_dir_ns+0x43/0x120
[  207.554558][ T6737]  sysfs_create_dir_ns+0x1a2/0x3f0
[  207.554578][ T6737]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  207.554604][ T6737]  kobject_add_internal+0x435/0x8d0
[  207.554635][ T6737]  kobject_add+0x15b/0x230
[  207.554658][ T6737]  ? kobject_put+0x43d/0x480
[  207.554680][ T6737]  ? __pfx_kobject_add+0x10/0x10
[  207.554703][ T6737]  ? bus_get_dev_root+0x127/0x160
[  207.554724][ T6737]  ? get_device_parent+0x405/0x410
[  207.554742][ T6737]  ? device_add+0x318/0xbf0
[  207.554769][ T6737]  device_add+0x4e5/0xbf0
[  207.554790][ T6737]  ? iommufd_test+0x2efb/0x56a0
[  207.554811][ T6737]  iommufd_test+0x3350/0x56a0
[  207.554841][ T6737]  ? __pfx_iommufd_test+0x10/0x10
[  207.554870][ T6737]  ? __lock_acquire+0xad5/0xd80
[  207.554919][ T6737]  iommufd_fops_ioctl+0x4fc/0x610
[  207.554946][ T6737]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  207.554973][ T6737]  ? __fget_files+0x2a/0x420
[  207.554994][ T6737]  ? __fget_files+0x2a/0x420
[  207.555014][ T6737]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  207.555040][ T6737]  __se_sys_ioctl+0xf1/0x160
[  207.555063][ T6737]  do_syscall_64+0xf3/0x230
[  207.555084][ T6737]  ? clear_bhb_loop+0x45/0xa0
[  207.555105][ T6737]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  207.555121][ T6737] RIP: 0033:0x7f33a0d8d169
[  207.555138][ T6737] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  207.555153][ T6737] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  207.555172][ T6737] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  207.555185][ T6737] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  207.555197][ T6737] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  207.555208][ T6737] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  207.555218][ T6737] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  207.555246][ T6737]  </TASK>
[  207.555272][ T6737] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  207.905313][ T6739] FAULT_INJECTION: forcing a failure.
[  207.905313][ T6739] name failslab, interval 1, probability 0, space 0, times 0
[  207.943566][ T6739] CPU: 0 UID: 0 PID: 6739 Comm: syz.0.246 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  207.943594][ T6739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  207.943606][ T6739] Call Trace:
[  207.943614][ T6739]  <TASK>
[  207.943622][ T6739]  dump_stack_lvl+0x241/0x360
[  207.943655][ T6739]  ? __pfx_dump_stack_lvl+0x10/0x10
[  207.943679][ T6739]  ? __pfx__printk+0x10/0x10
[  207.943707][ T6739]  ? __pfx___might_resched+0x10/0x10
[  207.943733][ T6739]  should_fail_ex+0x424/0x570
[  207.943757][ T6739]  should_failslab+0xac/0x100
[  207.943783][ T6739]  kmem_cache_alloc_noprof+0x78/0x390
[  207.943806][ T6739]  ? __kernfs_new_node+0xdf/0x890
[  207.943829][ T6739]  __kernfs_new_node+0xdf/0x890
[  207.943847][ T6739]  ? __lock_acquire+0xad5/0xd80
[  207.943873][ T6739]  ? __pfx___kernfs_new_node+0x10/0x10
[  207.943900][ T6739]  ? kernfs_root+0x1c/0x230
[  207.943919][ T6739]  ? kernfs_root+0x1c/0x230
[  207.943939][ T6739]  kernfs_new_node+0x114/0x220
[  207.943963][ T6739]  kernfs_create_link+0xa5/0x1f0
[  207.943988][ T6739]  sysfs_do_create_link_sd+0x85/0x110
[  207.944009][ T6739]  software_node_notify+0xd9/0x1b0
[  207.944031][ T6739]  device_add+0x513/0xbf0
[  207.944053][ T6739]  ? iommufd_test+0x2efb/0x56a0
[  207.944074][ T6739]  iommufd_test+0x3350/0x56a0
[  207.944104][ T6739]  ? __pfx_iommufd_test+0x10/0x10
[  207.944134][ T6739]  ? __lock_acquire+0xad5/0xd80
[  207.944184][ T6739]  iommufd_fops_ioctl+0x4fc/0x610
[  207.944210][ T6739]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  207.944237][ T6739]  ? __fget_files+0x2a/0x420
[  207.944259][ T6739]  ? __fget_files+0x2a/0x420
[  207.944280][ T6739]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  207.944305][ T6739]  __se_sys_ioctl+0xf1/0x160
[  207.944328][ T6739]  do_syscall_64+0xf3/0x230
[  207.944351][ T6739]  ? clear_bhb_loop+0x45/0xa0
[  207.944373][ T6739]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  207.944390][ T6739] RIP: 0033:0x7f33a0d8d169
[  207.944406][ T6739] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  207.944421][ T6739] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  207.944440][ T6739] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  207.944453][ T6739] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  207.944465][ T6739] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  207.944476][ T6739] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  207.944487][ T6739] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  207.944525][ T6739]  </TASK>
[  207.945291][ T6739] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  208.261882][ T6741] FAULT_INJECTION: forcing a failure.
[  208.261882][ T6741] name failslab, interval 1, probability 0, space 0, times 0
[  208.288120][ T6741] CPU: 1 UID: 0 PID: 6741 Comm: syz.0.247 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  208.288147][ T6741] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  208.288158][ T6741] Call Trace:
[  208.288165][ T6741]  <TASK>
[  208.288173][ T6741]  dump_stack_lvl+0x241/0x360
[  208.288204][ T6741]  ? __pfx_dump_stack_lvl+0x10/0x10
[  208.288227][ T6741]  ? __pfx__printk+0x10/0x10
[  208.288252][ T6741]  ? __pfx___might_resched+0x10/0x10
[  208.288274][ T6741]  should_fail_ex+0x424/0x570
[  208.288296][ T6741]  should_failslab+0xac/0x100
[  208.288318][ T6741]  kmem_cache_alloc_noprof+0x78/0x390
[  208.288339][ T6741]  ? __kernfs_new_node+0xdf/0x890
[  208.288360][ T6741]  __kernfs_new_node+0xdf/0x890
[  208.288377][ T6741]  ? __lock_acquire+0xad5/0xd80
[  208.288397][ T6741]  ? __pfx___kernfs_new_node+0x10/0x10
[  208.288423][ T6741]  ? kernfs_root+0x1c/0x230
[  208.288439][ T6741]  ? kernfs_root+0x1c/0x230
[  208.288456][ T6741]  kernfs_new_node+0x114/0x220
[  208.288479][ T6741]  kernfs_create_dir_ns+0x43/0x120
[  208.288501][ T6741]  sysfs_create_dir_ns+0x1a2/0x3f0
[  208.288522][ T6741]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  208.288547][ T6741]  kobject_add_internal+0x435/0x8d0
[  208.288578][ T6741]  kobject_add+0x15b/0x230
[  208.288600][ T6741]  ? kobject_put+0x43d/0x480
[  208.288647][ T6741]  ? __pfx_kobject_add+0x10/0x10
[  208.288671][ T6741]  ? bus_get_dev_root+0x127/0x160
[  208.288692][ T6741]  ? get_device_parent+0x405/0x410
[  208.288717][ T6741]  ? device_add+0x318/0xbf0
[  208.288738][ T6741]  device_add+0x4e5/0xbf0
[  208.288759][ T6741]  ? iommufd_test+0x2efb/0x56a0
[  208.288780][ T6741]  iommufd_test+0x3350/0x56a0
[  208.288811][ T6741]  ? __pfx_iommufd_test+0x10/0x10
[  208.288840][ T6741]  ? __lock_acquire+0xad5/0xd80
[  208.288890][ T6741]  iommufd_fops_ioctl+0x4fc/0x610
[  208.288917][ T6741]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  208.288944][ T6741]  ? __fget_files+0x2a/0x420
[  208.288966][ T6741]  ? __fget_files+0x2a/0x420
[  208.288986][ T6741]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  208.289011][ T6741]  __se_sys_ioctl+0xf1/0x160
[  208.289033][ T6741]  do_syscall_64+0xf3/0x230
[  208.289055][ T6741]  ? clear_bhb_loop+0x45/0xa0
[  208.289076][ T6741]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  208.289093][ T6741] RIP: 0033:0x7f33a0d8d169
[  208.289110][ T6741] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  208.289124][ T6741] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  208.289144][ T6741] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  208.289157][ T6741] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  208.289168][ T6741] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  208.289179][ T6741] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  208.289190][ T6741] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  208.289218][ T6741]  </TASK>
[  208.289245][ T6741] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  208.627957][ T6743] FAULT_INJECTION: forcing a failure.
[  208.627957][ T6743] name failslab, interval 1, probability 0, space 0, times 0
[  208.640826][ T6743] CPU: 1 UID: 0 PID: 6743 Comm: syz.0.248 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  208.640849][ T6743] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  208.640860][ T6743] Call Trace:
[  208.640867][ T6743]  <TASK>
[  208.640875][ T6743]  dump_stack_lvl+0x241/0x360
[  208.640906][ T6743]  ? __pfx_dump_stack_lvl+0x10/0x10
[  208.640931][ T6743]  ? __pfx__printk+0x10/0x10
[  208.640959][ T6743]  ? __pfx___might_resched+0x10/0x10
[  208.640983][ T6743]  should_fail_ex+0x424/0x570
[  208.641007][ T6743]  should_failslab+0xac/0x100
[  208.641033][ T6743]  kmem_cache_alloc_noprof+0x78/0x390
[  208.641056][ T6743]  ? __kernfs_new_node+0xdf/0x890
[  208.641079][ T6743]  __kernfs_new_node+0xdf/0x890
[  208.641097][ T6743]  ? __lock_acquire+0xad5/0xd80
[  208.641123][ T6743]  ? __pfx___kernfs_new_node+0x10/0x10
[  208.641150][ T6743]  ? kernfs_root+0x1c/0x230
[  208.641168][ T6743]  ? kernfs_root+0x1c/0x230
[  208.641188][ T6743]  kernfs_new_node+0x114/0x220
[  208.641210][ T6743]  kernfs_create_link+0xa5/0x1f0
[  208.641236][ T6743]  sysfs_do_create_link_sd+0x85/0x110
[  208.641257][ T6743]  software_node_notify+0xd9/0x1b0
[  208.641278][ T6743]  device_add+0x513/0xbf0
[  208.641300][ T6743]  ? iommufd_test+0x2efb/0x56a0
[  208.641322][ T6743]  iommufd_test+0x3350/0x56a0
[  208.641352][ T6743]  ? __pfx_iommufd_test+0x10/0x10
[  208.641383][ T6743]  ? __lock_acquire+0xad5/0xd80
[  208.641435][ T6743]  iommufd_fops_ioctl+0x4fc/0x610
[  208.641459][ T6743]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  208.641483][ T6743]  ? __fget_files+0x2a/0x420
[  208.641503][ T6743]  ? __fget_files+0x2a/0x420
[  208.641522][ T6743]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  208.641546][ T6743]  __se_sys_ioctl+0xf1/0x160
[  208.641568][ T6743]  do_syscall_64+0xf3/0x230
[  208.641590][ T6743]  ? clear_bhb_loop+0x45/0xa0
[  208.641611][ T6743]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  208.641627][ T6743] RIP: 0033:0x7f33a0d8d169
[  208.641644][ T6743] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  208.641668][ T6743] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  208.641688][ T6743] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  208.641701][ T6743] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  208.641712][ T6743] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  208.641723][ T6743] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  208.641734][ T6743] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  208.641763][ T6743]  </TASK>
[  208.913864][ T6743] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  208.958545][ T6745] FAULT_INJECTION: forcing a failure.
[  208.958545][ T6745] name failslab, interval 1, probability 0, space 0, times 0
[  208.975610][ T6745] CPU: 0 UID: 0 PID: 6745 Comm: syz.0.249 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  208.975639][ T6745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  208.975650][ T6745] Call Trace:
[  208.975658][ T6745]  <TASK>
[  208.975666][ T6745]  dump_stack_lvl+0x241/0x360
[  208.975699][ T6745]  ? __pfx_dump_stack_lvl+0x10/0x10
[  208.975721][ T6745]  ? __pfx__printk+0x10/0x10
[  208.975748][ T6745]  ? __pfx___might_resched+0x10/0x10
[  208.975774][ T6745]  should_fail_ex+0x424/0x570
[  208.975797][ T6745]  should_failslab+0xac/0x100
[  208.975823][ T6745]  kmem_cache_alloc_noprof+0x78/0x390
[  208.975846][ T6745]  ? __kernfs_new_node+0xdf/0x890
[  208.975869][ T6745]  __kernfs_new_node+0xdf/0x890
[  208.975888][ T6745]  ? __lock_acquire+0xad5/0xd80
[  208.975912][ T6745]  ? __pfx___kernfs_new_node+0x10/0x10
[  208.975940][ T6745]  ? kernfs_root+0x1c/0x230
[  208.975959][ T6745]  ? kernfs_root+0x1c/0x230
[  208.975979][ T6745]  kernfs_new_node+0x114/0x220
[  208.976002][ T6745]  kernfs_create_dir_ns+0x43/0x120
[  208.976026][ T6745]  sysfs_create_dir_ns+0x1a2/0x3f0
[  208.976047][ T6745]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  208.976073][ T6745]  kobject_add_internal+0x435/0x8d0
[  208.976105][ T6745]  kobject_add+0x15b/0x230
[  208.976128][ T6745]  ? kobject_put+0x43d/0x480
[  208.976149][ T6745]  ? __pfx_kobject_add+0x10/0x10
[  208.976171][ T6745]  ? bus_get_dev_root+0x127/0x160
[  208.976193][ T6745]  ? get_device_parent+0x405/0x410
[  208.976212][ T6745]  ? device_add+0x318/0xbf0
[  208.976232][ T6745]  device_add+0x4e5/0xbf0
[  208.976253][ T6745]  ? iommufd_test+0x2efb/0x56a0
[  208.976274][ T6745]  iommufd_test+0x3350/0x56a0
[  208.976304][ T6745]  ? __pfx_iommufd_test+0x10/0x10
[  208.976334][ T6745]  ? __lock_acquire+0xad5/0xd80
[  208.976383][ T6745]  iommufd_fops_ioctl+0x4fc/0x610
[  208.976410][ T6745]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  208.976479][ T6745]  ? __fget_files+0x2a/0x420
[  208.976501][ T6745]  ? __fget_files+0x2a/0x420
[  208.976521][ T6745]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  208.976546][ T6745]  __se_sys_ioctl+0xf1/0x160
[  208.976568][ T6745]  do_syscall_64+0xf3/0x230
[  208.976588][ T6745]  ? clear_bhb_loop+0x45/0xa0
[  208.976609][ T6745]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  208.976626][ T6745] RIP: 0033:0x7f33a0d8d169
[  208.976643][ T6745] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  208.976657][ T6745] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  208.976676][ T6745] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  208.976686][ T6745] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  208.976695][ T6745] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  208.976705][ T6745] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  208.976715][ T6745] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  208.976743][ T6745]  </TASK>
[  208.976770][ T6745] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  209.316229][ T6747] FAULT_INJECTION: forcing a failure.
[  209.316229][ T6747] name failslab, interval 1, probability 0, space 0, times 0
[  209.375654][ T6747] CPU: 1 UID: 0 PID: 6747 Comm: syz.0.250 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  209.375682][ T6747] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  209.375693][ T6747] Call Trace:
[  209.375700][ T6747]  <TASK>
[  209.375708][ T6747]  dump_stack_lvl+0x241/0x360
[  209.375743][ T6747]  ? __pfx_dump_stack_lvl+0x10/0x10
[  209.375767][ T6747]  ? __pfx__printk+0x10/0x10
[  209.375794][ T6747]  ? __pfx___might_resched+0x10/0x10
[  209.375820][ T6747]  should_fail_ex+0x424/0x570
[  209.375843][ T6747]  should_failslab+0xac/0x100
[  209.375868][ T6747]  kmem_cache_alloc_noprof+0x78/0x390
[  209.375891][ T6747]  ? __kernfs_new_node+0xdf/0x890
[  209.375914][ T6747]  __kernfs_new_node+0xdf/0x890
[  209.375932][ T6747]  ? __lock_acquire+0xad5/0xd80
[  209.375957][ T6747]  ? __pfx___kernfs_new_node+0x10/0x10
[  209.375984][ T6747]  ? kernfs_root+0x1c/0x230
[  209.376002][ T6747]  ? kernfs_root+0x1c/0x230
[  209.376022][ T6747]  kernfs_new_node+0x114/0x220
[  209.376045][ T6747]  kernfs_create_link+0xa5/0x1f0
[  209.376071][ T6747]  sysfs_do_create_link_sd+0x85/0x110
[  209.376091][ T6747]  software_node_notify+0xd9/0x1b0
[  209.376113][ T6747]  device_add+0x513/0xbf0
[  209.376134][ T6747]  ? iommufd_test+0x2efb/0x56a0
[  209.376155][ T6747]  iommufd_test+0x3350/0x56a0
[  209.376186][ T6747]  ? __pfx_iommufd_test+0x10/0x10
[  209.376215][ T6747]  ? __lock_acquire+0xad5/0xd80
[  209.376264][ T6747]  iommufd_fops_ioctl+0x4fc/0x610
[  209.376291][ T6747]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  209.376318][ T6747]  ? __fget_files+0x2a/0x420
[  209.376340][ T6747]  ? __fget_files+0x2a/0x420
[  209.376373][ T6747]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  209.376393][ T6747]  __se_sys_ioctl+0xf1/0x160
[  209.376415][ T6747]  do_syscall_64+0xf3/0x230
[  209.376438][ T6747]  ? clear_bhb_loop+0x45/0xa0
[  209.376466][ T6747]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  209.376483][ T6747] RIP: 0033:0x7f33a0d8d169
[  209.376499][ T6747] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  209.376524][ T6747] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  209.376543][ T6747] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  209.376561][ T6747] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  209.376572][ T6747] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  209.376583][ T6747] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  209.376594][ T6747] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  209.376630][ T6747]  </TASK>
[  209.377674][ T6747] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  209.730193][ T6749] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  209.771887][ T6751] FAULT_INJECTION: forcing a failure.
[  209.771887][ T6751] name failslab, interval 1, probability 0, space 0, times 0
[  209.785096][ T6751] CPU: 1 UID: 0 PID: 6751 Comm: syz.0.252 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  209.785120][ T6751] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  209.785131][ T6751] Call Trace:
[  209.785139][ T6751]  <TASK>
[  209.785146][ T6751]  dump_stack_lvl+0x241/0x360
[  209.785178][ T6751]  ? __pfx_dump_stack_lvl+0x10/0x10
[  209.785201][ T6751]  ? __pfx__printk+0x10/0x10
[  209.785230][ T6751]  ? __pfx___might_resched+0x10/0x10
[  209.785256][ T6751]  should_fail_ex+0x424/0x570
[  209.785279][ T6751]  should_failslab+0xac/0x100
[  209.785305][ T6751]  kmem_cache_alloc_noprof+0x78/0x390
[  209.785328][ T6751]  ? __kernfs_new_node+0xdf/0x890
[  209.785349][ T6751]  __kernfs_new_node+0xdf/0x890
[  209.785370][ T6751]  ? __lock_acquire+0xad5/0xd80
[  209.785392][ T6751]  ? __pfx___kernfs_new_node+0x10/0x10
[  209.785422][ T6751]  ? kernfs_root+0x1c/0x230
[  209.785440][ T6751]  ? kernfs_root+0x1c/0x230
[  209.785460][ T6751]  kernfs_new_node+0x114/0x220
[  209.785483][ T6751]  kernfs_create_dir_ns+0x43/0x120
[  209.785506][ T6751]  sysfs_create_dir_ns+0x1a2/0x3f0
[  209.785527][ T6751]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  209.785553][ T6751]  kobject_add_internal+0x435/0x8d0
[  209.785584][ T6751]  kobject_add+0x15b/0x230
[  209.785614][ T6751]  ? kobject_put+0x43d/0x480
[  209.785635][ T6751]  ? __pfx_kobject_add+0x10/0x10
[  209.785657][ T6751]  ? bus_get_dev_root+0x127/0x160
[  209.785679][ T6751]  ? get_device_parent+0x405/0x410
[  209.785698][ T6751]  ? device_add+0x318/0xbf0
[  209.785719][ T6751]  device_add+0x4e5/0xbf0
[  209.785740][ T6751]  ? iommufd_test+0x2efb/0x56a0
[  209.785761][ T6751]  iommufd_test+0x3350/0x56a0
[  209.785791][ T6751]  ? __pfx_iommufd_test+0x10/0x10
[  209.785821][ T6751]  ? __lock_acquire+0xad5/0xd80
[  209.785871][ T6751]  iommufd_fops_ioctl+0x4fc/0x610
[  209.785898][ T6751]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  209.785925][ T6751]  ? __fget_files+0x2a/0x420
[  209.785947][ T6751]  ? __fget_files+0x2a/0x420
[  209.785968][ T6751]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  209.785993][ T6751]  __se_sys_ioctl+0xf1/0x160
[  209.786015][ T6751]  do_syscall_64+0xf3/0x230
[  209.786036][ T6751]  ? clear_bhb_loop+0x45/0xa0
[  209.786057][ T6751]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  209.786074][ T6751] RIP: 0033:0x7f33a0d8d169
[  209.786091][ T6751] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  209.786106][ T6751] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  209.786126][ T6751] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  209.786139][ T6751] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  209.786151][ T6751] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  209.786162][ T6751] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  209.786172][ T6751] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  209.786199][ T6751]  </TASK>
[  209.786224][ T6751] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  210.120926][ T6753] FAULT_INJECTION: forcing a failure.
[  210.120926][ T6753] name failslab, interval 1, probability 0, space 0, times 0
[  210.136568][ T6753] CPU: 0 UID: 0 PID: 6753 Comm: syz.0.253 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  210.136594][ T6753] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  210.136605][ T6753] Call Trace:
[  210.136612][ T6753]  <TASK>
[  210.136621][ T6753]  dump_stack_lvl+0x241/0x360
[  210.136654][ T6753]  ? __pfx_dump_stack_lvl+0x10/0x10
[  210.136678][ T6753]  ? __pfx__printk+0x10/0x10
[  210.136706][ T6753]  ? __pfx___might_resched+0x10/0x10
[  210.136732][ T6753]  should_fail_ex+0x424/0x570
[  210.136755][ T6753]  should_failslab+0xac/0x100
[  210.136780][ T6753]  kmem_cache_alloc_noprof+0x78/0x390
[  210.136803][ T6753]  ? __kernfs_new_node+0xdf/0x890
[  210.136826][ T6753]  __kernfs_new_node+0xdf/0x890
[  210.136843][ T6753]  ? __lock_acquire+0xad5/0xd80
[  210.136868][ T6753]  ? __pfx___kernfs_new_node+0x10/0x10
[  210.136895][ T6753]  ? kernfs_root+0x1c/0x230
[  210.136914][ T6753]  ? kernfs_root+0x1c/0x230
[  210.136934][ T6753]  kernfs_new_node+0x114/0x220
[  210.136957][ T6753]  kernfs_create_link+0xa5/0x1f0
[  210.136983][ T6753]  sysfs_do_create_link_sd+0x85/0x110
[  210.137004][ T6753]  software_node_notify+0xd9/0x1b0
[  210.137025][ T6753]  device_add+0x513/0xbf0
[  210.137047][ T6753]  ? iommufd_test+0x2efb/0x56a0
[  210.137068][ T6753]  iommufd_test+0x3350/0x56a0
[  210.137098][ T6753]  ? __pfx_iommufd_test+0x10/0x10
[  210.137128][ T6753]  ? __lock_acquire+0xad5/0xd80
[  210.137177][ T6753]  iommufd_fops_ioctl+0x4fc/0x610
[  210.137203][ T6753]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  210.137231][ T6753]  ? __fget_files+0x2a/0x420
[  210.137253][ T6753]  ? __fget_files+0x2a/0x420
[  210.137273][ T6753]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  210.137297][ T6753]  __se_sys_ioctl+0xf1/0x160
[  210.137319][ T6753]  do_syscall_64+0xf3/0x230
[  210.137341][ T6753]  ? clear_bhb_loop+0x45/0xa0
[  210.137362][ T6753]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  210.137379][ T6753] RIP: 0033:0x7f33a0d8d169
[  210.137394][ T6753] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  210.137408][ T6753] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  210.137428][ T6753] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  210.137441][ T6753] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  210.137453][ T6753] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  210.137463][ T6753] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  210.137473][ T6753] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  210.137500][ T6753]  </TASK>
[  210.138279][ T6753] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  210.501681][ T6755] FAULT_INJECTION: forcing a failure.
[  210.501681][ T6755] name failslab, interval 1, probability 0, space 0, times 0
[  210.523753][ T6755] CPU: 1 UID: 0 PID: 6755 Comm: syz.0.254 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  210.523780][ T6755] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  210.523792][ T6755] Call Trace:
[  210.523799][ T6755]  <TASK>
[  210.523807][ T6755]  dump_stack_lvl+0x241/0x360
[  210.523840][ T6755]  ? __pfx_dump_stack_lvl+0x10/0x10
[  210.523870][ T6755]  ? __pfx__printk+0x10/0x10
[  210.523898][ T6755]  ? __pfx___might_resched+0x10/0x10
[  210.523924][ T6755]  should_fail_ex+0x424/0x570
[  210.523948][ T6755]  should_failslab+0xac/0x100
[  210.523974][ T6755]  kmem_cache_alloc_noprof+0x78/0x390
[  210.523996][ T6755]  ? __kernfs_new_node+0xdf/0x890
[  210.524019][ T6755]  __kernfs_new_node+0xdf/0x890
[  210.524037][ T6755]  ? __lock_acquire+0xad5/0xd80
[  210.524062][ T6755]  ? __pfx___kernfs_new_node+0x10/0x10
[  210.524089][ T6755]  ? kernfs_root+0x1c/0x230
[  210.524108][ T6755]  ? kernfs_root+0x1c/0x230
[  210.524128][ T6755]  kernfs_new_node+0x114/0x220
[  210.524152][ T6755]  kernfs_create_link+0xa5/0x1f0
[  210.524178][ T6755]  sysfs_do_create_link_sd+0x85/0x110
[  210.524198][ T6755]  software_node_notify+0xd9/0x1b0
[  210.524221][ T6755]  device_add+0x513/0xbf0
[  210.524243][ T6755]  ? iommufd_test+0x2efb/0x56a0
[  210.524274][ T6755]  iommufd_test+0x3350/0x56a0
[  210.524305][ T6755]  ? __pfx_iommufd_test+0x10/0x10
[  210.524334][ T6755]  ? __lock_acquire+0xad5/0xd80
[  210.524384][ T6755]  iommufd_fops_ioctl+0x4fc/0x610
[  210.524411][ T6755]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  210.524438][ T6755]  ? __fget_files+0x2a/0x420
[  210.524460][ T6755]  ? __fget_files+0x2a/0x420
[  210.524481][ T6755]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  210.524504][ T6755]  __se_sys_ioctl+0xf1/0x160
[  210.524527][ T6755]  do_syscall_64+0xf3/0x230
[  210.524549][ T6755]  ? clear_bhb_loop+0x45/0xa0
[  210.524570][ T6755]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  210.524587][ T6755] RIP: 0033:0x7f33a0d8d169
[  210.524604][ T6755] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  210.524619][ T6755] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  210.524638][ T6755] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  210.524651][ T6755] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  210.524663][ T6755] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  210.524674][ T6755] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  210.524685][ T6755] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  210.524713][ T6755]  </TASK>
[  210.525800][ T6755] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  210.871239][ T6757] FAULT_INJECTION: forcing a failure.
[  210.871239][ T6757] name failslab, interval 1, probability 0, space 0, times 0
[  210.886112][ T6757] CPU: 1 UID: 0 PID: 6757 Comm: syz.0.255 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  210.886138][ T6757] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  210.886149][ T6757] Call Trace:
[  210.886156][ T6757]  <TASK>
[  210.886164][ T6757]  dump_stack_lvl+0x241/0x360
[  210.886235][ T6757]  ? __pfx_dump_stack_lvl+0x10/0x10
[  210.886260][ T6757]  ? __pfx__printk+0x10/0x10
[  210.886287][ T6757]  ? __pfx___might_resched+0x10/0x10
[  210.886313][ T6757]  should_fail_ex+0x424/0x570
[  210.886337][ T6757]  should_failslab+0xac/0x100
[  210.886362][ T6757]  kmem_cache_alloc_noprof+0x78/0x390
[  210.886384][ T6757]  ? __kernfs_new_node+0xdf/0x890
[  210.886408][ T6757]  __kernfs_new_node+0xdf/0x890
[  210.886425][ T6757]  ? __lock_acquire+0xad5/0xd80
[  210.886450][ T6757]  ? __pfx___kernfs_new_node+0x10/0x10
[  210.886476][ T6757]  ? kernfs_root+0x1c/0x230
[  210.886494][ T6757]  ? kernfs_root+0x1c/0x230
[  210.886514][ T6757]  kernfs_new_node+0x114/0x220
[  210.886537][ T6757]  kernfs_create_link+0xa5/0x1f0
[  210.886563][ T6757]  sysfs_do_create_link_sd+0x85/0x110
[  210.886583][ T6757]  software_node_notify+0xd9/0x1b0
[  210.886604][ T6757]  device_add+0x513/0xbf0
[  210.886625][ T6757]  ? iommufd_test+0x2efb/0x56a0
[  210.886647][ T6757]  iommufd_test+0x3350/0x56a0
[  210.886677][ T6757]  ? __pfx_iommufd_test+0x10/0x10
[  210.886706][ T6757]  ? __lock_acquire+0xad5/0xd80
[  210.886762][ T6757]  iommufd_fops_ioctl+0x4fc/0x610
[  210.886788][ T6757]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  210.886815][ T6757]  ? __fget_files+0x2a/0x420
[  210.886836][ T6757]  ? __fget_files+0x2a/0x420
[  210.886856][ T6757]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  210.886881][ T6757]  __se_sys_ioctl+0xf1/0x160
[  210.886904][ T6757]  do_syscall_64+0xf3/0x230
[  210.886926][ T6757]  ? clear_bhb_loop+0x45/0xa0
[  210.886947][ T6757]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  210.886963][ T6757] RIP: 0033:0x7f33a0d8d169
[  210.886979][ T6757] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  210.886994][ T6757] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  210.887015][ T6757] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  210.887027][ T6757] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  210.887039][ T6757] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  210.887050][ T6757] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  210.887060][ T6757] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  210.887088][ T6757]  </TASK>
[  210.887853][ T6757] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  211.188576][ T6759] FAULT_INJECTION: forcing a failure.
[  211.188576][ T6759] name failslab, interval 1, probability 0, space 0, times 0
[  211.204827][ T6759] CPU: 0 UID: 0 PID: 6759 Comm: syz.0.256 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  211.204853][ T6759] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  211.204865][ T6759] Call Trace:
[  211.204873][ T6759]  <TASK>
[  211.204880][ T6759]  dump_stack_lvl+0x241/0x360
[  211.204912][ T6759]  ? __pfx_dump_stack_lvl+0x10/0x10
[  211.204936][ T6759]  ? __pfx__printk+0x10/0x10
[  211.204964][ T6759]  ? __pfx___might_resched+0x10/0x10
[  211.204989][ T6759]  should_fail_ex+0x424/0x570
[  211.205013][ T6759]  should_failslab+0xac/0x100
[  211.205038][ T6759]  kmem_cache_alloc_noprof+0x78/0x390
[  211.205060][ T6759]  ? __kernfs_new_node+0xdf/0x890
[  211.205084][ T6759]  __kernfs_new_node+0xdf/0x890
[  211.205104][ T6759]  ? __lock_acquire+0xad5/0xd80
[  211.205127][ T6759]  ? __pfx___kernfs_new_node+0x10/0x10
[  211.205156][ T6759]  ? kernfs_root+0x1c/0x230
[  211.205174][ T6759]  ? kernfs_root+0x1c/0x230
[  211.205194][ T6759]  kernfs_new_node+0x114/0x220
[  211.205217][ T6759]  kernfs_create_dir_ns+0x43/0x120
[  211.205247][ T6759]  sysfs_create_dir_ns+0x1a2/0x3f0
[  211.205268][ T6759]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  211.205294][ T6759]  kobject_add_internal+0x435/0x8d0
[  211.205325][ T6759]  kobject_add+0x15b/0x230
[  211.205350][ T6759]  ? kobject_put+0x43d/0x480
[  211.205370][ T6759]  ? __pfx_kobject_add+0x10/0x10
[  211.205393][ T6759]  ? bus_get_dev_root+0x127/0x160
[  211.205415][ T6759]  ? get_device_parent+0x405/0x410
[  211.205434][ T6759]  ? device_add+0x318/0xbf0
[  211.205455][ T6759]  device_add+0x4e5/0xbf0
[  211.205475][ T6759]  ? iommufd_test+0x2efb/0x56a0
[  211.205496][ T6759]  iommufd_test+0x3350/0x56a0
[  211.205525][ T6759]  ? __pfx_iommufd_test+0x10/0x10
[  211.205555][ T6759]  ? __lock_acquire+0xad5/0xd80
[  211.205604][ T6759]  iommufd_fops_ioctl+0x4fc/0x610
[  211.205632][ T6759]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  211.205659][ T6759]  ? __fget_files+0x2a/0x420
[  211.205682][ T6759]  ? __fget_files+0x2a/0x420
[  211.205702][ T6759]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  211.205727][ T6759]  __se_sys_ioctl+0xf1/0x160
[  211.205750][ T6759]  do_syscall_64+0xf3/0x230
[  211.205771][ T6759]  ? clear_bhb_loop+0x45/0xa0
[  211.205792][ T6759]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  211.205809][ T6759] RIP: 0033:0x7f33a0d8d169
[  211.205826][ T6759] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  211.205840][ T6759] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  211.205860][ T6759] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  211.205873][ T6759] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  211.205884][ T6759] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  211.205895][ T6759] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  211.205905][ T6759] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  211.205932][ T6759]  </TASK>
[  211.205957][ T6759] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  211.630273][ T6761] FAULT_INJECTION: forcing a failure.
[  211.630273][ T6761] name failslab, interval 1, probability 0, space 0, times 0
[  211.643103][ T6761] CPU: 0 UID: 0 PID: 6761 Comm: syz.0.257 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  211.643128][ T6761] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  211.643138][ T6761] Call Trace:
[  211.643147][ T6761]  <TASK>
[  211.643154][ T6761]  dump_stack_lvl+0x241/0x360
[  211.643195][ T6761]  ? __pfx_dump_stack_lvl+0x10/0x10
[  211.643219][ T6761]  ? __pfx__printk+0x10/0x10
[  211.643247][ T6761]  ? __pfx___might_resched+0x10/0x10
[  211.643272][ T6761]  should_fail_ex+0x424/0x570
[  211.643296][ T6761]  should_failslab+0xac/0x100
[  211.643321][ T6761]  kmem_cache_alloc_noprof+0x78/0x390
[  211.643343][ T6761]  ? __kernfs_new_node+0xdf/0x890
[  211.643365][ T6761]  __kernfs_new_node+0xdf/0x890
[  211.643383][ T6761]  ? __lock_acquire+0xad5/0xd80
[  211.643408][ T6761]  ? __pfx___kernfs_new_node+0x10/0x10
[  211.643434][ T6761]  ? kernfs_root+0x1c/0x230
[  211.643452][ T6761]  ? kernfs_root+0x1c/0x230
[  211.643472][ T6761]  kernfs_new_node+0x114/0x220
[  211.643496][ T6761]  kernfs_create_link+0xa5/0x1f0
[  211.643523][ T6761]  sysfs_do_create_link_sd+0x85/0x110
[  211.643543][ T6761]  software_node_notify+0xd9/0x1b0
[  211.643565][ T6761]  device_add+0x513/0xbf0
[  211.643587][ T6761]  ? iommufd_test+0x2efb/0x56a0
[  211.643610][ T6761]  iommufd_test+0x3350/0x56a0
[  211.643640][ T6761]  ? __pfx_iommufd_test+0x10/0x10
[  211.643670][ T6761]  ? __lock_acquire+0xad5/0xd80
[  211.643720][ T6761]  iommufd_fops_ioctl+0x4fc/0x610
[  211.643747][ T6761]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  211.643774][ T6761]  ? __fget_files+0x2a/0x420
[  211.643797][ T6761]  ? __fget_files+0x2a/0x420
[  211.643816][ T6761]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  211.643840][ T6761]  __se_sys_ioctl+0xf1/0x160
[  211.643863][ T6761]  do_syscall_64+0xf3/0x230
[  211.643885][ T6761]  ? clear_bhb_loop+0x45/0xa0
[  211.643906][ T6761]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  211.643923][ T6761] RIP: 0033:0x7f33a0d8d169
[  211.643938][ T6761] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  211.643953][ T6761] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  211.643971][ T6761] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  211.643984][ T6761] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  211.643996][ T6761] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  211.644007][ T6761] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  211.644017][ T6761] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  211.644044][ T6761]  </TASK>
[  211.644784][ T6761] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  211.997400][ T6763] FAULT_INJECTION: forcing a failure.
[  211.997400][ T6763] name failslab, interval 1, probability 0, space 0, times 0
[  212.019419][ T6763] CPU: 0 UID: 0 PID: 6763 Comm: syz.0.258 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  212.019447][ T6763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  212.019458][ T6763] Call Trace:
[  212.019466][ T6763]  <TASK>
[  212.019473][ T6763]  dump_stack_lvl+0x241/0x360
[  212.019505][ T6763]  ? __pfx_dump_stack_lvl+0x10/0x10
[  212.019529][ T6763]  ? __pfx__printk+0x10/0x10
[  212.019557][ T6763]  ? __pfx___might_resched+0x10/0x10
[  212.019583][ T6763]  should_fail_ex+0x424/0x570
[  212.019606][ T6763]  should_failslab+0xac/0x100
[  212.019631][ T6763]  kmem_cache_alloc_noprof+0x78/0x390
[  212.019655][ T6763]  ? __kernfs_new_node+0xdf/0x890
[  212.019678][ T6763]  __kernfs_new_node+0xdf/0x890
[  212.019696][ T6763]  ? __lock_acquire+0xad5/0xd80
[  212.019721][ T6763]  ? __pfx___kernfs_new_node+0x10/0x10
[  212.019748][ T6763]  ? kernfs_root+0x1c/0x230
[  212.019767][ T6763]  ? kernfs_root+0x1c/0x230
[  212.019787][ T6763]  kernfs_new_node+0x114/0x220
[  212.019811][ T6763]  kernfs_create_link+0xa5/0x1f0
[  212.019837][ T6763]  sysfs_do_create_link_sd+0x85/0x110
[  212.019858][ T6763]  software_node_notify+0xd9/0x1b0
[  212.019880][ T6763]  device_add+0x513/0xbf0
[  212.019901][ T6763]  ? iommufd_test+0x2efb/0x56a0
[  212.019923][ T6763]  iommufd_test+0x3350/0x56a0
[  212.019951][ T6763]  ? __pfx_iommufd_test+0x10/0x10
[  212.019980][ T6763]  ? __lock_acquire+0xad5/0xd80
[  212.020029][ T6763]  iommufd_fops_ioctl+0x4fc/0x610
[  212.020057][ T6763]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  212.020083][ T6763]  ? __fget_files+0x2a/0x420
[  212.020104][ T6763]  ? __fget_files+0x2a/0x420
[  212.020125][ T6763]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  212.020150][ T6763]  __se_sys_ioctl+0xf1/0x160
[  212.020172][ T6763]  do_syscall_64+0xf3/0x230
[  212.020195][ T6763]  ? clear_bhb_loop+0x45/0xa0
[  212.020216][ T6763]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  212.020232][ T6763] RIP: 0033:0x7f33a0d8d169
[  212.020248][ T6763] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  212.020262][ T6763] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  212.020282][ T6763] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  212.020295][ T6763] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  212.020307][ T6763] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  212.020318][ T6763] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  212.020328][ T6763] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  212.020363][ T6763]  </TASK>
[  212.021101][ T6763] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  212.318307][ T6765] FAULT_INJECTION: forcing a failure.
[  212.318307][ T6765] name failslab, interval 1, probability 0, space 0, times 0
[  212.331935][ T6765] CPU: 1 UID: 0 PID: 6765 Comm: syz.0.259 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  212.331960][ T6765] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  212.331970][ T6765] Call Trace:
[  212.331978][ T6765]  <TASK>
[  212.331985][ T6765]  dump_stack_lvl+0x241/0x360
[  212.332017][ T6765]  ? __pfx_dump_stack_lvl+0x10/0x10
[  212.332042][ T6765]  ? __pfx__printk+0x10/0x10
[  212.332069][ T6765]  ? __pfx___might_resched+0x10/0x10
[  212.332096][ T6765]  should_fail_ex+0x424/0x570
[  212.332126][ T6765]  should_failslab+0xac/0x100
[  212.332152][ T6765]  kmem_cache_alloc_noprof+0x78/0x390
[  212.332175][ T6765]  ? __kernfs_new_node+0xdf/0x890
[  212.332198][ T6765]  __kernfs_new_node+0xdf/0x890
[  212.332215][ T6765]  ? __lock_acquire+0xad5/0xd80
[  212.332240][ T6765]  ? __pfx___kernfs_new_node+0x10/0x10
[  212.332266][ T6765]  ? kernfs_root+0x1c/0x230
[  212.332283][ T6765]  ? kernfs_root+0x1c/0x230
[  212.332303][ T6765]  kernfs_new_node+0x114/0x220
[  212.332325][ T6765]  kernfs_create_link+0xa5/0x1f0
[  212.332351][ T6765]  sysfs_do_create_link_sd+0x85/0x110
[  212.332370][ T6765]  software_node_notify+0xd9/0x1b0
[  212.332390][ T6765]  device_add+0x513/0xbf0
[  212.332411][ T6765]  ? iommufd_test+0x2efb/0x56a0
[  212.332432][ T6765]  iommufd_test+0x3350/0x56a0
[  212.332462][ T6765]  ? __pfx_iommufd_test+0x10/0x10
[  212.332492][ T6765]  ? __lock_acquire+0xad5/0xd80
[  212.332540][ T6765]  iommufd_fops_ioctl+0x4fc/0x610
[  212.332567][ T6765]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  212.332595][ T6765]  ? __fget_files+0x2a/0x420
[  212.332616][ T6765]  ? __fget_files+0x2a/0x420
[  212.332636][ T6765]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  212.332661][ T6765]  __se_sys_ioctl+0xf1/0x160
[  212.332683][ T6765]  do_syscall_64+0xf3/0x230
[  212.332705][ T6765]  ? clear_bhb_loop+0x45/0xa0
[  212.332726][ T6765]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  212.332742][ T6765] RIP: 0033:0x7f33a0d8d169
[  212.332758][ T6765] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  212.332773][ T6765] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  212.332792][ T6765] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  212.332805][ T6765] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  212.332817][ T6765] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  212.332832][ T6765] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  212.332843][ T6765] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  212.332870][ T6765]  </TASK>
[  212.333632][ T6765] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  212.693087][ T6767] FAULT_INJECTION: forcing a failure.
[  212.693087][ T6767] name failslab, interval 1, probability 0, space 0, times 0
[  212.710027][ T6767] CPU: 0 UID: 0 PID: 6767 Comm: syz.0.260 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  212.710051][ T6767] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  212.710062][ T6767] Call Trace:
[  212.710069][ T6767]  <TASK>
[  212.710076][ T6767]  dump_stack_lvl+0x241/0x360
[  212.710105][ T6767]  ? __pfx_dump_stack_lvl+0x10/0x10
[  212.710126][ T6767]  ? __pfx__printk+0x10/0x10
[  212.710151][ T6767]  ? __pfx___might_resched+0x10/0x10
[  212.710174][ T6767]  should_fail_ex+0x424/0x570
[  212.710195][ T6767]  should_failslab+0xac/0x100
[  212.710218][ T6767]  __kmalloc_node_track_caller_noprof+0xe2/0x4d0
[  212.710242][ T6767]  ? __kernfs_new_node+0xa2/0x890
[  212.710258][ T6767]  ? kernel_text_address+0xa7/0xe0
[  212.710278][ T6767]  kstrdup+0x42/0x100
[  212.710300][ T6767]  __kernfs_new_node+0xa2/0x890
[  212.710320][ T6767]  ? __lock_acquire+0xad5/0xd80
[  212.710343][ T6767]  ? __pfx___kernfs_new_node+0x10/0x10
[  212.710369][ T6767]  ? kernfs_root+0x1c/0x230
[  212.710385][ T6767]  ? kernfs_root+0x1c/0x230
[  212.710402][ T6767]  kernfs_new_node+0x114/0x220
[  212.710423][ T6767]  kernfs_create_dir_ns+0x43/0x120
[  212.710443][ T6767]  sysfs_create_dir_ns+0x1a2/0x3f0
[  212.710462][ T6767]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
2025/04/10 11:57:06 executed programs: 246
[  212.710489][ T6767]  kobject_add_internal+0x435/0x8d0
[  212.710521][ T6767]  kobject_add+0x15b/0x230
[  212.710544][ T6767]  ? kobject_put+0x43d/0x480
[  212.710565][ T6767]  ? __pfx_kobject_add+0x10/0x10
[  212.710588][ T6767]  ? bus_get_dev_root+0x127/0x160
[  212.710610][ T6767]  ? get_device_parent+0x405/0x410
[  212.710627][ T6767]  ? device_add+0x318/0xbf0
[  212.710648][ T6767]  device_add+0x4e5/0xbf0
[  212.710669][ T6767]  ? iommufd_test+0x2efb/0x56a0
[  212.710692][ T6767]  iommufd_test+0x3350/0x56a0
[  212.710728][ T6767]  ? __pfx_iommufd_test+0x10/0x10
[  212.710758][ T6767]  ? __lock_acquire+0xad5/0xd80
[  212.710806][ T6767]  iommufd_fops_ioctl+0x4fc/0x610
[  212.710832][ T6767]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  212.710859][ T6767]  ? __fget_files+0x2a/0x420
[  212.710881][ T6767]  ? __fget_files+0x2a/0x420
[  212.710901][ T6767]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  212.710926][ T6767]  __se_sys_ioctl+0xf1/0x160
[  212.710949][ T6767]  do_syscall_64+0xf3/0x230
[  212.710970][ T6767]  ? clear_bhb_loop+0x45/0xa0
[  212.710989][ T6767]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  212.711012][ T6767] RIP: 0033:0x7f33a0d8d169
[  212.711028][ T6767] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  212.711042][ T6767] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  212.711062][ T6767] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  212.711074][ T6767] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  212.711086][ T6767] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  212.711096][ T6767] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  212.711106][ T6767] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  212.711133][ T6767]  </TASK>
[  212.711144][ T6767] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  213.063814][ T6769] FAULT_INJECTION: forcing a failure.
[  213.063814][ T6769] name failslab, interval 1, probability 0, space 0, times 0
[  213.123624][ T6769] CPU: 1 UID: 0 PID: 6769 Comm: syz.0.261 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  213.123652][ T6769] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  213.123663][ T6769] Call Trace:
[  213.123671][ T6769]  <TASK>
[  213.123679][ T6769]  dump_stack_lvl+0x241/0x360
[  213.123712][ T6769]  ? __pfx_dump_stack_lvl+0x10/0x10
[  213.123736][ T6769]  ? __pfx__printk+0x10/0x10
[  213.123764][ T6769]  ? __pfx___might_resched+0x10/0x10
[  213.123790][ T6769]  should_fail_ex+0x424/0x570
[  213.123814][ T6769]  should_failslab+0xac/0x100
[  213.123839][ T6769]  kmem_cache_alloc_noprof+0x78/0x390
[  213.123862][ T6769]  ? __kernfs_new_node+0xdf/0x890
[  213.123885][ T6769]  __kernfs_new_node+0xdf/0x890
[  213.123903][ T6769]  ? __lock_acquire+0xad5/0xd80
[  213.123928][ T6769]  ? __pfx___kernfs_new_node+0x10/0x10
[  213.123955][ T6769]  ? kernfs_root+0x1c/0x230
[  213.123975][ T6769]  ? kernfs_root+0x1c/0x230
[  213.123994][ T6769]  kernfs_new_node+0x114/0x220
[  213.124017][ T6769]  kernfs_create_link+0xa5/0x1f0
[  213.124043][ T6769]  sysfs_do_create_link_sd+0x85/0x110
[  213.124064][ T6769]  software_node_notify+0xd9/0x1b0
[  213.124086][ T6769]  device_add+0x513/0xbf0
[  213.124107][ T6769]  ? iommufd_test+0x2efb/0x56a0
[  213.124129][ T6769]  iommufd_test+0x3350/0x56a0
[  213.124159][ T6769]  ? __pfx_iommufd_test+0x10/0x10
[  213.124189][ T6769]  ? __lock_acquire+0xad5/0xd80
[  213.124244][ T6769]  iommufd_fops_ioctl+0x4fc/0x610
[  213.124271][ T6769]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  213.124298][ T6769]  ? __fget_files+0x2a/0x420
[  213.124321][ T6769]  ? __fget_files+0x2a/0x420
[  213.124341][ T6769]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  213.124365][ T6769]  __se_sys_ioctl+0xf1/0x160
[  213.124388][ T6769]  do_syscall_64+0xf3/0x230
[  213.124410][ T6769]  ? clear_bhb_loop+0x45/0xa0
[  213.124431][ T6769]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  213.124448][ T6769] RIP: 0033:0x7f33a0d8d169
[  213.124463][ T6769] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  213.124475][ T6769] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  213.124493][ T6769] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  213.124504][ T6769] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  213.124515][ T6769] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  213.124525][ T6769] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  213.124535][ T6769] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  213.124559][ T6769]  </TASK>
[  213.125351][ T6769] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  213.421971][ T6771] FAULT_INJECTION: forcing a failure.
[  213.421971][ T6771] name failslab, interval 1, probability 0, space 0, times 0
[  213.479621][ T6771] CPU: 0 UID: 0 PID: 6771 Comm: syz.0.262 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  213.479650][ T6771] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  213.479661][ T6771] Call Trace:
[  213.479668][ T6771]  <TASK>
[  213.479677][ T6771]  dump_stack_lvl+0x241/0x360
[  213.479706][ T6771]  ? __pfx_dump_stack_lvl+0x10/0x10
[  213.479728][ T6771]  ? __pfx__printk+0x10/0x10
[  213.479751][ T6771]  ? __pfx___might_resched+0x10/0x10
[  213.479776][ T6771]  should_fail_ex+0x424/0x570
[  213.479799][ T6771]  should_failslab+0xac/0x100
[  213.479824][ T6771]  kmem_cache_alloc_noprof+0x78/0x390
[  213.479846][ T6771]  ? __kernfs_new_node+0xdf/0x890
[  213.479869][ T6771]  __kernfs_new_node+0xdf/0x890
[  213.479887][ T6771]  ? __lock_acquire+0xad5/0xd80
[  213.479912][ T6771]  ? __pfx___kernfs_new_node+0x10/0x10
[  213.479938][ T6771]  ? kernfs_root+0x1c/0x230
[  213.479968][ T6771]  ? kernfs_root+0x1c/0x230
[  213.479987][ T6771]  kernfs_new_node+0x114/0x220
[  213.480011][ T6771]  kernfs_create_link+0xa5/0x1f0
[  213.480037][ T6771]  sysfs_do_create_link_sd+0x85/0x110
[  213.480056][ T6771]  software_node_notify+0xd9/0x1b0
[  213.480079][ T6771]  device_add+0x513/0xbf0
[  213.480100][ T6771]  ? iommufd_test+0x2efb/0x56a0
[  213.480121][ T6771]  iommufd_test+0x3350/0x56a0
[  213.480152][ T6771]  ? __pfx_iommufd_test+0x10/0x10
[  213.480181][ T6771]  ? __lock_acquire+0xad5/0xd80
[  213.480229][ T6771]  iommufd_fops_ioctl+0x4fc/0x610
[  213.480254][ T6771]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  213.480281][ T6771]  ? __fget_files+0x2a/0x420
[  213.480303][ T6771]  ? __fget_files+0x2a/0x420
[  213.480323][ T6771]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  213.480348][ T6771]  __se_sys_ioctl+0xf1/0x160
[  213.480371][ T6771]  do_syscall_64+0xf3/0x230
[  213.480393][ T6771]  ? clear_bhb_loop+0x45/0xa0
[  213.480414][ T6771]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  213.480431][ T6771] RIP: 0033:0x7f33a0d8d169
[  213.480447][ T6771] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  213.480461][ T6771] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  213.480480][ T6771] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  213.480493][ T6771] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  213.480504][ T6771] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  213.480514][ T6771] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  213.480525][ T6771] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  213.480552][ T6771]  </TASK>
[  213.481361][ T6771] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  213.784903][ T6773] FAULT_INJECTION: forcing a failure.
[  213.784903][ T6773] name failslab, interval 1, probability 0, space 0, times 0
[  213.804414][ T6773] CPU: 1 UID: 0 PID: 6773 Comm: syz.0.263 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  213.804443][ T6773] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  213.804454][ T6773] Call Trace:
[  213.804461][ T6773]  <TASK>
[  213.804469][ T6773]  dump_stack_lvl+0x241/0x360
[  213.804502][ T6773]  ? __pfx_dump_stack_lvl+0x10/0x10
[  213.804526][ T6773]  ? __pfx__printk+0x10/0x10
[  213.804553][ T6773]  ? __pfx___might_resched+0x10/0x10
[  213.804579][ T6773]  should_fail_ex+0x424/0x570
[  213.804603][ T6773]  should_failslab+0xac/0x100
[  213.804628][ T6773]  kmem_cache_alloc_noprof+0x78/0x390
[  213.804652][ T6773]  ? __kernfs_new_node+0xdf/0x890
[  213.804675][ T6773]  __kernfs_new_node+0xdf/0x890
[  213.804692][ T6773]  ? __lock_acquire+0xad5/0xd80
[  213.804717][ T6773]  ? __pfx___kernfs_new_node+0x10/0x10
[  213.804744][ T6773]  ? kernfs_root+0x1c/0x230
[  213.804762][ T6773]  ? kernfs_root+0x1c/0x230
[  213.804782][ T6773]  kernfs_new_node+0x114/0x220
[  213.804806][ T6773]  kernfs_create_link+0xa5/0x1f0
[  213.804831][ T6773]  sysfs_do_create_link_sd+0x85/0x110
[  213.804851][ T6773]  software_node_notify+0xd9/0x1b0
[  213.804874][ T6773]  device_add+0x513/0xbf0
[  213.804895][ T6773]  ? iommufd_test+0x2efb/0x56a0
[  213.804916][ T6773]  iommufd_test+0x3350/0x56a0
[  213.804944][ T6773]  ? __pfx_iommufd_test+0x10/0x10
[  213.804973][ T6773]  ? __lock_acquire+0xad5/0xd80
[  213.805023][ T6773]  iommufd_fops_ioctl+0x4fc/0x610
[  213.805049][ T6773]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  213.805077][ T6773]  ? __fget_files+0x2a/0x420
[  213.805099][ T6773]  ? __fget_files+0x2a/0x420
[  213.805118][ T6773]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  213.805143][ T6773]  __se_sys_ioctl+0xf1/0x160
[  213.805166][ T6773]  do_syscall_64+0xf3/0x230
[  213.805195][ T6773]  ? clear_bhb_loop+0x45/0xa0
[  213.805217][ T6773]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  213.805234][ T6773] RIP: 0033:0x7f33a0d8d169
[  213.805250][ T6773] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  213.805265][ T6773] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  213.805285][ T6773] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  213.805298][ T6773] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  213.805309][ T6773] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  213.805320][ T6773] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  213.805330][ T6773] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  213.805358][ T6773]  </TASK>
[  213.806111][ T6773] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  214.164407][ T6775] FAULT_INJECTION: forcing a failure.
[  214.164407][ T6775] name failslab, interval 1, probability 0, space 0, times 0
[  214.180011][ T6775] CPU: 0 UID: 0 PID: 6775 Comm: syz.0.264 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  214.180038][ T6775] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  214.180049][ T6775] Call Trace:
[  214.180056][ T6775]  <TASK>
[  214.180064][ T6775]  dump_stack_lvl+0x241/0x360
[  214.180096][ T6775]  ? __pfx_dump_stack_lvl+0x10/0x10
[  214.180119][ T6775]  ? __pfx__printk+0x10/0x10
[  214.180145][ T6775]  ? __pfx___might_resched+0x10/0x10
[  214.180172][ T6775]  should_fail_ex+0x424/0x570
[  214.180195][ T6775]  should_failslab+0xac/0x100
[  214.180221][ T6775]  kmem_cache_alloc_noprof+0x78/0x390
[  214.180244][ T6775]  ? __kernfs_new_node+0xdf/0x890
[  214.180266][ T6775]  __kernfs_new_node+0xdf/0x890
[  214.180286][ T6775]  ? __lock_acquire+0xad5/0xd80
[  214.180309][ T6775]  ? __pfx___kernfs_new_node+0x10/0x10
[  214.180337][ T6775]  ? kernfs_root+0x1c/0x230
[  214.180356][ T6775]  ? kernfs_root+0x1c/0x230
[  214.180376][ T6775]  kernfs_new_node+0x114/0x220
[  214.180399][ T6775]  kernfs_create_dir_ns+0x43/0x120
[  214.180422][ T6775]  sysfs_create_dir_ns+0x1a2/0x3f0
[  214.180443][ T6775]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  214.180468][ T6775]  kobject_add_internal+0x435/0x8d0
[  214.180499][ T6775]  kobject_add+0x15b/0x230
[  214.180522][ T6775]  ? kobject_put+0x43d/0x480
[  214.180542][ T6775]  ? __pfx_kobject_add+0x10/0x10
[  214.180565][ T6775]  ? bus_get_dev_root+0x127/0x160
[  214.180586][ T6775]  ? get_device_parent+0x405/0x410
[  214.180604][ T6775]  ? device_add+0x318/0xbf0
[  214.180626][ T6775]  device_add+0x4e5/0xbf0
[  214.180647][ T6775]  ? iommufd_test+0x2efb/0x56a0
[  214.180668][ T6775]  iommufd_test+0x3350/0x56a0
[  214.180698][ T6775]  ? __pfx_iommufd_test+0x10/0x10
[  214.180727][ T6775]  ? __lock_acquire+0xad5/0xd80
[  214.180777][ T6775]  iommufd_fops_ioctl+0x4fc/0x610
[  214.180804][ T6775]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  214.180831][ T6775]  ? __fget_files+0x2a/0x420
[  214.180853][ T6775]  ? __fget_files+0x2a/0x420
[  214.180872][ T6775]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  214.180905][ T6775]  __se_sys_ioctl+0xf1/0x160
[  214.180927][ T6775]  do_syscall_64+0xf3/0x230
[  214.180948][ T6775]  ? clear_bhb_loop+0x45/0xa0
[  214.180970][ T6775]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  214.180986][ T6775] RIP: 0033:0x7f33a0d8d169
[  214.181003][ T6775] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  214.181017][ T6775] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  214.181037][ T6775] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  214.181049][ T6775] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  214.181061][ T6775] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  214.181072][ T6775] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  214.181083][ T6775] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  214.181110][ T6775]  </TASK>
[  214.181135][ T6775] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  214.515474][ T6777] FAULT_INJECTION: forcing a failure.
[  214.515474][ T6777] name failslab, interval 1, probability 0, space 0, times 0
[  214.571684][ T6777] CPU: 1 UID: 0 PID: 6777 Comm: syz.0.265 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  214.571712][ T6777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  214.571722][ T6777] Call Trace:
[  214.571730][ T6777]  <TASK>
[  214.571738][ T6777]  dump_stack_lvl+0x241/0x360
[  214.571770][ T6777]  ? __pfx_dump_stack_lvl+0x10/0x10
[  214.571802][ T6777]  ? __pfx__printk+0x10/0x10
[  214.571830][ T6777]  ? __pfx___might_resched+0x10/0x10
[  214.571856][ T6777]  should_fail_ex+0x424/0x570
[  214.571880][ T6777]  should_failslab+0xac/0x100
[  214.571905][ T6777]  kmem_cache_alloc_noprof+0x78/0x390
[  214.571928][ T6777]  ? __kernfs_new_node+0xdf/0x890
[  214.571951][ T6777]  __kernfs_new_node+0xdf/0x890
[  214.571969][ T6777]  ? __lock_acquire+0xad5/0xd80
[  214.571993][ T6777]  ? __pfx___kernfs_new_node+0x10/0x10
[  214.572020][ T6777]  ? kernfs_root+0x1c/0x230
[  214.572038][ T6777]  ? kernfs_root+0x1c/0x230
[  214.572057][ T6777]  kernfs_new_node+0x114/0x220
[  214.572080][ T6777]  kernfs_create_link+0xa5/0x1f0
[  214.572105][ T6777]  sysfs_do_create_link_sd+0x85/0x110
[  214.572125][ T6777]  software_node_notify+0xd9/0x1b0
[  214.572147][ T6777]  device_add+0x513/0xbf0
[  214.572168][ T6777]  ? iommufd_test+0x2efb/0x56a0
[  214.572190][ T6777]  iommufd_test+0x3350/0x56a0
[  214.572219][ T6777]  ? __pfx_iommufd_test+0x10/0x10
[  214.572248][ T6777]  ? __lock_acquire+0xad5/0xd80
[  214.572297][ T6777]  iommufd_fops_ioctl+0x4fc/0x610
[  214.572323][ T6777]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  214.572350][ T6777]  ? __fget_files+0x2a/0x420
[  214.572372][ T6777]  ? __fget_files+0x2a/0x420
[  214.572392][ T6777]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  214.572417][ T6777]  __se_sys_ioctl+0xf1/0x160
[  214.572440][ T6777]  do_syscall_64+0xf3/0x230
[  214.572462][ T6777]  ? clear_bhb_loop+0x45/0xa0
[  214.572482][ T6777]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  214.572500][ T6777] RIP: 0033:0x7f33a0d8d169
[  214.572512][ T6777] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  214.572528][ T6777] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  214.572548][ T6777] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  214.572560][ T6777] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  214.572572][ T6777] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  214.572583][ T6777] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  214.572594][ T6777] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  214.572621][ T6777]  </TASK>
[  214.573437][ T6777] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  214.872732][ T6779] FAULT_INJECTION: forcing a failure.
[  214.872732][ T6779] name failslab, interval 1, probability 0, space 0, times 0
[  214.888193][ T6779] CPU: 1 UID: 0 PID: 6779 Comm: syz.0.266 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  214.888218][ T6779] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  214.888229][ T6779] Call Trace:
[  214.888236][ T6779]  <TASK>
[  214.888244][ T6779]  dump_stack_lvl+0x241/0x360
[  214.888275][ T6779]  ? __pfx_dump_stack_lvl+0x10/0x10
[  214.888299][ T6779]  ? __pfx__printk+0x10/0x10
[  214.888327][ T6779]  ? __pfx___might_resched+0x10/0x10
[  214.888352][ T6779]  should_fail_ex+0x424/0x570
[  214.888376][ T6779]  should_failslab+0xac/0x100
[  214.888401][ T6779]  kmem_cache_alloc_noprof+0x78/0x390
[  214.888424][ T6779]  ? __kernfs_new_node+0xdf/0x890
[  214.888447][ T6779]  __kernfs_new_node+0xdf/0x890
[  214.888464][ T6779]  ? __lock_acquire+0xad5/0xd80
[  214.888490][ T6779]  ? __pfx___kernfs_new_node+0x10/0x10
[  214.888516][ T6779]  ? kernfs_root+0x1c/0x230
[  214.888535][ T6779]  ? kernfs_root+0x1c/0x230
[  214.888555][ T6779]  kernfs_new_node+0x114/0x220
[  214.888578][ T6779]  kernfs_create_link+0xa5/0x1f0
[  214.888604][ T6779]  sysfs_do_create_link_sd+0x85/0x110
[  214.888624][ T6779]  software_node_notify+0xd9/0x1b0
[  214.888645][ T6779]  device_add+0x513/0xbf0
[  214.888667][ T6779]  ? iommufd_test+0x2efb/0x56a0
[  214.888688][ T6779]  iommufd_test+0x3350/0x56a0
[  214.888717][ T6779]  ? __pfx_iommufd_test+0x10/0x10
[  214.888746][ T6779]  ? __lock_acquire+0xad5/0xd80
[  214.888795][ T6779]  iommufd_fops_ioctl+0x4fc/0x610
[  214.888821][ T6779]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  214.888848][ T6779]  ? __fget_files+0x2a/0x420
[  214.888870][ T6779]  ? __fget_files+0x2a/0x420
[  214.888890][ T6779]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  214.888915][ T6779]  __se_sys_ioctl+0xf1/0x160
[  214.888938][ T6779]  do_syscall_64+0xf3/0x230
[  214.888959][ T6779]  ? clear_bhb_loop+0x45/0xa0
[  214.888980][ T6779]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  214.888997][ T6779] RIP: 0033:0x7f33a0d8d169
[  214.889013][ T6779] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  214.889027][ T6779] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  214.889054][ T6779] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  214.889067][ T6779] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  214.889078][ T6779] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  214.889089][ T6779] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  214.889100][ T6779] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  214.889128][ T6779]  </TASK>
[  214.889858][ T6779] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  215.219389][ T6781] FAULT_INJECTION: forcing a failure.
[  215.219389][ T6781] name failslab, interval 1, probability 0, space 0, times 0
[  215.273435][ T6781] CPU: 1 UID: 0 PID: 6781 Comm: syz.0.267 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  215.273463][ T6781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  215.273474][ T6781] Call Trace:
[  215.273482][ T6781]  <TASK>
[  215.273490][ T6781]  dump_stack_lvl+0x241/0x360
[  215.273522][ T6781]  ? __pfx_dump_stack_lvl+0x10/0x10
[  215.273546][ T6781]  ? __pfx__printk+0x10/0x10
[  215.273575][ T6781]  ? __pfx___might_resched+0x10/0x10
[  215.273601][ T6781]  should_fail_ex+0x424/0x570
[  215.273625][ T6781]  should_failslab+0xac/0x100
[  215.273650][ T6781]  kmem_cache_alloc_noprof+0x78/0x390
[  215.273673][ T6781]  ? __kernfs_new_node+0xdf/0x890
[  215.273696][ T6781]  __kernfs_new_node+0xdf/0x890
[  215.273714][ T6781]  ? __lock_acquire+0xad5/0xd80
[  215.273739][ T6781]  ? __pfx___kernfs_new_node+0x10/0x10
[  215.273772][ T6781]  ? kernfs_root+0x1c/0x230
[  215.273790][ T6781]  ? kernfs_root+0x1c/0x230
[  215.273810][ T6781]  kernfs_new_node+0x114/0x220
[  215.273834][ T6781]  kernfs_create_link+0xa5/0x1f0
[  215.273861][ T6781]  sysfs_do_create_link_sd+0x85/0x110
[  215.273881][ T6781]  software_node_notify+0xd9/0x1b0
[  215.273903][ T6781]  device_add+0x513/0xbf0
[  215.273924][ T6781]  ? iommufd_test+0x2efb/0x56a0
[  215.273945][ T6781]  iommufd_test+0x3350/0x56a0
[  215.273976][ T6781]  ? __pfx_iommufd_test+0x10/0x10
[  215.274010][ T6781]  ? __lock_acquire+0xad5/0xd80
[  215.274060][ T6781]  iommufd_fops_ioctl+0x4fc/0x610
[  215.274086][ T6781]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  215.274113][ T6781]  ? __fget_files+0x2a/0x420
[  215.274136][ T6781]  ? __fget_files+0x2a/0x420
[  215.274156][ T6781]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  215.274181][ T6781]  __se_sys_ioctl+0xf1/0x160
[  215.274204][ T6781]  do_syscall_64+0xf3/0x230
[  215.274226][ T6781]  ? clear_bhb_loop+0x45/0xa0
[  215.274247][ T6781]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  215.274264][ T6781] RIP: 0033:0x7f33a0d8d169
[  215.274281][ T6781] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  215.274296][ T6781] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  215.274315][ T6781] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  215.274328][ T6781] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  215.274339][ T6781] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  215.274351][ T6781] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  215.274361][ T6781] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  215.274390][ T6781]  </TASK>
[  215.275157][ T6781] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  215.580071][ T6783] FAULT_INJECTION: forcing a failure.
[  215.580071][ T6783] name failslab, interval 1, probability 0, space 0, times 0
[  215.595047][ T6783] CPU: 0 UID: 0 PID: 6783 Comm: syz.0.268 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  215.595076][ T6783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  215.595087][ T6783] Call Trace:
[  215.595094][ T6783]  <TASK>
[  215.595102][ T6783]  dump_stack_lvl+0x241/0x360
[  215.595134][ T6783]  ? __pfx_dump_stack_lvl+0x10/0x10
[  215.595158][ T6783]  ? __pfx__printk+0x10/0x10
[  215.595187][ T6783]  ? __pfx___might_resched+0x10/0x10
[  215.595212][ T6783]  should_fail_ex+0x424/0x570
[  215.595236][ T6783]  should_failslab+0xac/0x100
[  215.595262][ T6783]  kmem_cache_alloc_noprof+0x78/0x390
[  215.595285][ T6783]  ? __kernfs_new_node+0xdf/0x890
[  215.595307][ T6783]  __kernfs_new_node+0xdf/0x890
[  215.595327][ T6783]  ? __lock_acquire+0xad5/0xd80
[  215.595350][ T6783]  ? __pfx___kernfs_new_node+0x10/0x10
[  215.595379][ T6783]  ? kernfs_root+0x1c/0x230
[  215.595397][ T6783]  ? kernfs_root+0x1c/0x230
[  215.595417][ T6783]  kernfs_new_node+0x114/0x220
[  215.595440][ T6783]  kernfs_create_dir_ns+0x43/0x120
[  215.595464][ T6783]  sysfs_create_dir_ns+0x1a2/0x3f0
[  215.595484][ T6783]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  215.595511][ T6783]  kobject_add_internal+0x435/0x8d0
[  215.595542][ T6783]  kobject_add+0x15b/0x230
[  215.595565][ T6783]  ? kobject_put+0x43d/0x480
[  215.595586][ T6783]  ? __pfx_kobject_add+0x10/0x10
[  215.595609][ T6783]  ? bus_get_dev_root+0x127/0x160
[  215.595630][ T6783]  ? get_device_parent+0x405/0x410
[  215.595648][ T6783]  ? device_add+0x318/0xbf0
[  215.595670][ T6783]  device_add+0x4e5/0xbf0
[  215.595691][ T6783]  ? iommufd_test+0x2efb/0x56a0
[  215.595712][ T6783]  iommufd_test+0x3350/0x56a0
[  215.595749][ T6783]  ? __pfx_iommufd_test+0x10/0x10
[  215.595777][ T6783]  ? __lock_acquire+0xad5/0xd80
[  215.595826][ T6783]  iommufd_fops_ioctl+0x4fc/0x610
[  215.595852][ T6783]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  215.595880][ T6783]  ? __fget_files+0x2a/0x420
[  215.595902][ T6783]  ? __fget_files+0x2a/0x420
[  215.595922][ T6783]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  215.595947][ T6783]  __se_sys_ioctl+0xf1/0x160
[  215.595970][ T6783]  do_syscall_64+0xf3/0x230
[  215.595990][ T6783]  ? clear_bhb_loop+0x45/0xa0
[  215.596011][ T6783]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  215.596028][ T6783] RIP: 0033:0x7f33a0d8d169
[  215.596044][ T6783] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  215.596058][ T6783] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  215.596078][ T6783] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  215.596090][ T6783] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  215.596102][ T6783] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  215.596113][ T6783] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  215.596124][ T6783] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  215.596151][ T6783]  </TASK>
[  215.596177][ T6783] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  216.001930][ T6785] FAULT_INJECTION: forcing a failure.
[  216.001930][ T6785] name failslab, interval 1, probability 0, space 0, times 0
[  216.015994][ T6785] CPU: 0 UID: 0 PID: 6785 Comm: syz.0.269 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  216.016020][ T6785] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  216.016030][ T6785] Call Trace:
[  216.016038][ T6785]  <TASK>
[  216.016045][ T6785]  dump_stack_lvl+0x241/0x360
[  216.016077][ T6785]  ? __pfx_dump_stack_lvl+0x10/0x10
[  216.016102][ T6785]  ? __pfx__printk+0x10/0x10
[  216.016129][ T6785]  ? __pfx___might_resched+0x10/0x10
[  216.016156][ T6785]  should_fail_ex+0x424/0x570
[  216.016179][ T6785]  should_failslab+0xac/0x100
[  216.016204][ T6785]  kmem_cache_alloc_noprof+0x78/0x390
[  216.016227][ T6785]  ? __kernfs_new_node+0xdf/0x890
[  216.016251][ T6785]  __kernfs_new_node+0xdf/0x890
[  216.016268][ T6785]  ? __lock_acquire+0xad5/0xd80
[  216.016294][ T6785]  ? __pfx___kernfs_new_node+0x10/0x10
[  216.016320][ T6785]  ? kernfs_root+0x1c/0x230
[  216.016338][ T6785]  ? kernfs_root+0x1c/0x230
[  216.016358][ T6785]  kernfs_new_node+0x114/0x220
[  216.016381][ T6785]  kernfs_create_link+0xa5/0x1f0
[  216.016408][ T6785]  sysfs_do_create_link_sd+0x85/0x110
[  216.016427][ T6785]  software_node_notify+0xd9/0x1b0
[  216.016449][ T6785]  device_add+0x513/0xbf0
[  216.016470][ T6785]  ? iommufd_test+0x2efb/0x56a0
[  216.016491][ T6785]  iommufd_test+0x3350/0x56a0
[  216.016521][ T6785]  ? __pfx_iommufd_test+0x10/0x10
[  216.016550][ T6785]  ? __lock_acquire+0xad5/0xd80
[  216.016600][ T6785]  iommufd_fops_ioctl+0x4fc/0x610
[  216.016626][ T6785]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  216.016653][ T6785]  ? __fget_files+0x2a/0x420
[  216.016675][ T6785]  ? __fget_files+0x2a/0x420
[  216.016696][ T6785]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  216.016718][ T6785]  __se_sys_ioctl+0xf1/0x160
[  216.016740][ T6785]  do_syscall_64+0xf3/0x230
[  216.016763][ T6785]  ? clear_bhb_loop+0x45/0xa0
[  216.016784][ T6785]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  216.016800][ T6785] RIP: 0033:0x7f33a0d8d169
[  216.016817][ T6785] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  216.016831][ T6785] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  216.016851][ T6785] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  216.016864][ T6785] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  216.016875][ T6785] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  216.016886][ T6785] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  216.016897][ T6785] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  216.016924][ T6785]  </TASK>
[  216.017694][ T6785] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  216.369849][ T6787] FAULT_INJECTION: forcing a failure.
[  216.369849][ T6787] name failslab, interval 1, probability 0, space 0, times 0
[  216.382690][ T6787] CPU: 0 UID: 0 PID: 6787 Comm: syz.0.270 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  216.382716][ T6787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  216.382727][ T6787] Call Trace:
[  216.382735][ T6787]  <TASK>
[  216.382743][ T6787]  dump_stack_lvl+0x241/0x360
[  216.382774][ T6787]  ? __pfx_dump_stack_lvl+0x10/0x10
[  216.382798][ T6787]  ? __pfx__printk+0x10/0x10
[  216.382825][ T6787]  ? __pfx___might_resched+0x10/0x10
[  216.382850][ T6787]  should_fail_ex+0x424/0x570
[  216.382874][ T6787]  should_failslab+0xac/0x100
[  216.382899][ T6787]  kmem_cache_alloc_noprof+0x78/0x390
[  216.382922][ T6787]  ? __kernfs_new_node+0xdf/0x890
[  216.382953][ T6787]  __kernfs_new_node+0xdf/0x890
[  216.382970][ T6787]  ? __lock_acquire+0xad5/0xd80
[  216.382995][ T6787]  ? __pfx___kernfs_new_node+0x10/0x10
[  216.383022][ T6787]  ? kernfs_root+0x1c/0x230
[  216.383041][ T6787]  ? kernfs_root+0x1c/0x230
[  216.383060][ T6787]  kernfs_new_node+0x114/0x220
[  216.383083][ T6787]  kernfs_create_link+0xa5/0x1f0
[  216.383110][ T6787]  sysfs_do_create_link_sd+0x85/0x110
[  216.383130][ T6787]  software_node_notify+0xd9/0x1b0
[  216.383151][ T6787]  device_add+0x513/0xbf0
[  216.383173][ T6787]  ? iommufd_test+0x2efb/0x56a0
[  216.383195][ T6787]  iommufd_test+0x3350/0x56a0
[  216.383224][ T6787]  ? __pfx_iommufd_test+0x10/0x10
[  216.383254][ T6787]  ? __lock_acquire+0xad5/0xd80
[  216.383304][ T6787]  iommufd_fops_ioctl+0x4fc/0x610
[  216.383330][ T6787]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  216.383357][ T6787]  ? __fget_files+0x2a/0x420
[  216.383379][ T6787]  ? __fget_files+0x2a/0x420
[  216.383399][ T6787]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  216.383424][ T6787]  __se_sys_ioctl+0xf1/0x160
[  216.383446][ T6787]  do_syscall_64+0xf3/0x230
[  216.383469][ T6787]  ? clear_bhb_loop+0x45/0xa0
[  216.383490][ T6787]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  216.383507][ T6787] RIP: 0033:0x7f33a0d8d169
[  216.383523][ T6787] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  216.383537][ T6787] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  216.383557][ T6787] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  216.383570][ T6787] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  216.383581][ T6787] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  216.383592][ T6787] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  216.383603][ T6787] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  216.383629][ T6787]  </TASK>
[  216.384379][ T6787] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  216.734131][ T6789] FAULT_INJECTION: forcing a failure.
[  216.734131][ T6789] name failslab, interval 1, probability 0, space 0, times 0
[  216.747006][ T6789] CPU: 1 UID: 0 PID: 6789 Comm: syz.0.271 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  216.747032][ T6789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  216.747043][ T6789] Call Trace:
[  216.747050][ T6789]  <TASK>
[  216.747058][ T6789]  dump_stack_lvl+0x241/0x360
[  216.747090][ T6789]  ? __pfx_dump_stack_lvl+0x10/0x10
[  216.747114][ T6789]  ? __pfx__printk+0x10/0x10
[  216.747142][ T6789]  ? __pfx___might_resched+0x10/0x10
[  216.747168][ T6789]  should_fail_ex+0x424/0x570
[  216.747191][ T6789]  should_failslab+0xac/0x100
[  216.747218][ T6789]  kmem_cache_alloc_noprof+0x78/0x390
[  216.747241][ T6789]  ? __kernfs_new_node+0xdf/0x890
[  216.747263][ T6789]  __kernfs_new_node+0xdf/0x890
[  216.747281][ T6789]  ? __lock_acquire+0xad5/0xd80
[  216.747306][ T6789]  ? __pfx___kernfs_new_node+0x10/0x10
[  216.747333][ T6789]  ? kernfs_root+0x1c/0x230
[  216.747351][ T6789]  ? kernfs_root+0x1c/0x230
[  216.747372][ T6789]  kernfs_new_node+0x114/0x220
[  216.747395][ T6789]  kernfs_create_link+0xa5/0x1f0
[  216.747421][ T6789]  sysfs_do_create_link_sd+0x85/0x110
[  216.747440][ T6789]  software_node_notify+0xd9/0x1b0
[  216.747462][ T6789]  device_add+0x513/0xbf0
[  216.747483][ T6789]  ? iommufd_test+0x2efb/0x56a0
[  216.747504][ T6789]  iommufd_test+0x3350/0x56a0
[  216.747534][ T6789]  ? __pfx_iommufd_test+0x10/0x10
[  216.747564][ T6789]  ? __lock_acquire+0xad5/0xd80
[  216.747611][ T6789]  iommufd_fops_ioctl+0x4fc/0x610
[  216.747637][ T6789]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  216.747665][ T6789]  ? __fget_files+0x2a/0x420
[  216.747687][ T6789]  ? __fget_files+0x2a/0x420
[  216.747707][ T6789]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  216.747732][ T6789]  __se_sys_ioctl+0xf1/0x160
[  216.747754][ T6789]  do_syscall_64+0xf3/0x230
[  216.747776][ T6789]  ? clear_bhb_loop+0x45/0xa0
[  216.747797][ T6789]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  216.747815][ T6789] RIP: 0033:0x7f33a0d8d169
[  216.747830][ T6789] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  216.747845][ T6789] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  216.747871][ T6789] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  216.747884][ T6789] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  216.747896][ T6789] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  216.747907][ T6789] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  216.747917][ T6789] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  216.747945][ T6789]  </TASK>
[  216.748728][ T6789] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  217.044564][ T6791] FAULT_INJECTION: forcing a failure.
[  217.044564][ T6791] name failslab, interval 1, probability 0, space 0, times 0
[  217.092904][ T6791] CPU: 1 UID: 0 PID: 6791 Comm: syz.0.272 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  217.092931][ T6791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  217.092943][ T6791] Call Trace:
[  217.092950][ T6791]  <TASK>
[  217.092958][ T6791]  dump_stack_lvl+0x241/0x360
[  217.092990][ T6791]  ? __pfx_dump_stack_lvl+0x10/0x10
[  217.093014][ T6791]  ? __pfx__printk+0x10/0x10
[  217.093042][ T6791]  ? __pfx___might_resched+0x10/0x10
[  217.093069][ T6791]  should_fail_ex+0x424/0x570
[  217.093093][ T6791]  should_failslab+0xac/0x100
[  217.093119][ T6791]  kmem_cache_alloc_noprof+0x78/0x390
[  217.093142][ T6791]  ? __kernfs_new_node+0xdf/0x890
[  217.093165][ T6791]  __kernfs_new_node+0xdf/0x890
[  217.093185][ T6791]  ? __lock_acquire+0xad5/0xd80
[  217.093208][ T6791]  ? __pfx___kernfs_new_node+0x10/0x10
[  217.093238][ T6791]  ? kernfs_root+0x1c/0x230
[  217.093257][ T6791]  ? kernfs_root+0x1c/0x230
[  217.093277][ T6791]  kernfs_new_node+0x114/0x220
[  217.093301][ T6791]  kernfs_create_dir_ns+0x43/0x120
[  217.093324][ T6791]  sysfs_create_dir_ns+0x1a2/0x3f0
[  217.093345][ T6791]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  217.093372][ T6791]  kobject_add_internal+0x435/0x8d0
[  217.093403][ T6791]  kobject_add+0x15b/0x230
[  217.093427][ T6791]  ? kobject_put+0x43d/0x480
[  217.093447][ T6791]  ? __pfx_kobject_add+0x10/0x10
[  217.093470][ T6791]  ? bus_get_dev_root+0x127/0x160
[  217.093492][ T6791]  ? get_device_parent+0x405/0x410
[  217.093510][ T6791]  ? device_add+0x318/0xbf0
[  217.093532][ T6791]  device_add+0x4e5/0xbf0
[  217.093553][ T6791]  ? iommufd_test+0x2efb/0x56a0
[  217.093574][ T6791]  iommufd_test+0x3350/0x56a0
[  217.093605][ T6791]  ? __pfx_iommufd_test+0x10/0x10
[  217.093635][ T6791]  ? __lock_acquire+0xad5/0xd80
[  217.093685][ T6791]  iommufd_fops_ioctl+0x4fc/0x610
[  217.093712][ T6791]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  217.093740][ T6791]  ? __fget_files+0x2a/0x420
[  217.093762][ T6791]  ? __fget_files+0x2a/0x420
[  217.093783][ T6791]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  217.093808][ T6791]  __se_sys_ioctl+0xf1/0x160
[  217.093831][ T6791]  do_syscall_64+0xf3/0x230
[  217.093852][ T6791]  ? clear_bhb_loop+0x45/0xa0
[  217.093879][ T6791]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  217.093897][ T6791] RIP: 0033:0x7f33a0d8d169
[  217.093914][ T6791] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  217.093929][ T6791] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  217.093949][ T6791] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  217.093962][ T6791] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  217.093974][ T6791] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  217.093985][ T6791] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  217.093996][ T6791] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  217.094025][ T6791]  </TASK>
[  217.094050][ T6791] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  217.479010][ T6793] FAULT_INJECTION: forcing a failure.
[  217.479010][ T6793] name failslab, interval 1, probability 0, space 0, times 0
[  217.494693][ T6793] CPU: 1 UID: 0 PID: 6793 Comm: syz.0.273 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  217.494719][ T6793] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  217.494730][ T6793] Call Trace:
[  217.494737][ T6793]  <TASK>
[  217.494745][ T6793]  dump_stack_lvl+0x241/0x360
[  217.494778][ T6793]  ? __pfx_dump_stack_lvl+0x10/0x10
[  217.494808][ T6793]  ? __pfx__printk+0x10/0x10
[  217.494836][ T6793]  ? __pfx___might_resched+0x10/0x10
[  217.494862][ T6793]  should_fail_ex+0x424/0x570
[  217.494885][ T6793]  should_failslab+0xac/0x100
[  217.494910][ T6793]  kmem_cache_alloc_noprof+0x78/0x390
[  217.494934][ T6793]  ? __kernfs_new_node+0xdf/0x890
[  217.494957][ T6793]  __kernfs_new_node+0xdf/0x890
[  217.494974][ T6793]  ? __lock_acquire+0xad5/0xd80
[  217.495000][ T6793]  ? __pfx___kernfs_new_node+0x10/0x10
[  217.495026][ T6793]  ? kernfs_root+0x1c/0x230
[  217.495045][ T6793]  ? kernfs_root+0x1c/0x230
[  217.495065][ T6793]  kernfs_new_node+0x114/0x220
[  217.495088][ T6793]  kernfs_create_link+0xa5/0x1f0
[  217.495115][ T6793]  sysfs_do_create_link_sd+0x85/0x110
[  217.495135][ T6793]  software_node_notify+0xd9/0x1b0
[  217.495156][ T6793]  device_add+0x513/0xbf0
[  217.495177][ T6793]  ? iommufd_test+0x2efb/0x56a0
[  217.495199][ T6793]  iommufd_test+0x3350/0x56a0
[  217.495229][ T6793]  ? __pfx_iommufd_test+0x10/0x10
[  217.495257][ T6793]  ? __lock_acquire+0xad5/0xd80
[  217.495307][ T6793]  iommufd_fops_ioctl+0x4fc/0x610
[  217.495333][ T6793]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  217.495360][ T6793]  ? __fget_files+0x2a/0x420
[  217.495382][ T6793]  ? __fget_files+0x2a/0x420
[  217.495402][ T6793]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  217.495427][ T6793]  __se_sys_ioctl+0xf1/0x160
[  217.495449][ T6793]  do_syscall_64+0xf3/0x230
[  217.495472][ T6793]  ? clear_bhb_loop+0x45/0xa0
[  217.495493][ T6793]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  217.495511][ T6793] RIP: 0033:0x7f33a0d8d169
[  217.495527][ T6793] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  217.495542][ T6793] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  217.495561][ T6793] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  217.495574][ T6793] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  217.495586][ T6793] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  217.495597][ T6793] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  217.495607][ T6793] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  217.495635][ T6793]  </TASK>
[  217.496391][ T6793] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  217.831188][ T6795] FAULT_INJECTION: forcing a failure.
[  217.831188][ T6795] name failslab, interval 1, probability 0, space 0, times 0
[  217.844365][ T6795] CPU: 1 UID: 0 PID: 6795 Comm: syz.0.274 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  217.844390][ T6795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  217.844401][ T6795] Call Trace:
[  217.844408][ T6795]  <TASK>
2025/04/10 11:57:11 executed programs: 260
[  217.844416][ T6795]  dump_stack_lvl+0x241/0x360
[  217.844447][ T6795]  ? __pfx_dump_stack_lvl+0x10/0x10
[  217.844470][ T6795]  ? __pfx__printk+0x10/0x10
[  217.844497][ T6795]  ? __pfx___might_resched+0x10/0x10
[  217.844522][ T6795]  should_fail_ex+0x424/0x570
[  217.844545][ T6795]  should_failslab+0xac/0x100
[  217.844570][ T6795]  kmem_cache_alloc_noprof+0x78/0x390
[  217.844593][ T6795]  ? __kernfs_new_node+0xdf/0x890
[  217.844617][ T6795]  __kernfs_new_node+0xdf/0x890
[  217.844634][ T6795]  ? __lock_acquire+0xad5/0xd80
[  217.844659][ T6795]  ? __pfx___kernfs_new_node+0x10/0x10
[  217.844686][ T6795]  ? kernfs_root+0x1c/0x230
[  217.844704][ T6795]  ? kernfs_root+0x1c/0x230
[  217.844724][ T6795]  kernfs_new_node+0x114/0x220
[  217.844747][ T6795]  kernfs_create_link+0xa5/0x1f0
[  217.844783][ T6795]  sysfs_do_create_link_sd+0x85/0x110
[  217.844803][ T6795]  software_node_notify+0xd9/0x1b0
[  217.844824][ T6795]  device_add+0x513/0xbf0
[  217.844845][ T6795]  ? iommufd_test+0x2efb/0x56a0
[  217.844864][ T6795]  iommufd_test+0x3350/0x56a0
[  217.844894][ T6795]  ? __pfx_iommufd_test+0x10/0x10
[  217.844923][ T6795]  ? __lock_acquire+0xad5/0xd80
[  217.844973][ T6795]  iommufd_fops_ioctl+0x4fc/0x610
[  217.844998][ T6795]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  217.845025][ T6795]  ? __fget_files+0x2a/0x420
[  217.845047][ T6795]  ? __fget_files+0x2a/0x420
[  217.845067][ T6795]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  217.845092][ T6795]  __se_sys_ioctl+0xf1/0x160
[  217.845114][ T6795]  do_syscall_64+0xf3/0x230
[  217.845136][ T6795]  ? clear_bhb_loop+0x45/0xa0
[  217.845157][ T6795]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  217.845174][ T6795] RIP: 0033:0x7f33a0d8d169
[  217.845191][ T6795] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  217.845206][ T6795] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  217.845226][ T6795] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  217.845239][ T6795] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  217.845250][ T6795] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  217.845261][ T6795] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  217.845272][ T6795] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  217.845299][ T6795]  </TASK>
[  217.846043][ T6795] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  218.186796][ T6797] FAULT_INJECTION: forcing a failure.
[  218.186796][ T6797] name failslab, interval 1, probability 0, space 0, times 0
[  218.205141][ T6797] CPU: 1 UID: 0 PID: 6797 Comm: syz.0.275 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  218.205168][ T6797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  218.205180][ T6797] Call Trace:
[  218.205187][ T6797]  <TASK>
[  218.205195][ T6797]  dump_stack_lvl+0x241/0x360
[  218.205226][ T6797]  ? __pfx_dump_stack_lvl+0x10/0x10
[  218.205249][ T6797]  ? __pfx__printk+0x10/0x10
[  218.205276][ T6797]  ? __pfx___might_resched+0x10/0x10
[  218.205301][ T6797]  should_fail_ex+0x424/0x570
[  218.205324][ T6797]  should_failslab+0xac/0x100
[  218.205349][ T6797]  kmem_cache_alloc_noprof+0x78/0x390
[  218.205372][ T6797]  ? __kernfs_new_node+0xdf/0x890
[  218.205395][ T6797]  __kernfs_new_node+0xdf/0x890
[  218.205413][ T6797]  ? __lock_acquire+0xad5/0xd80
[  218.205438][ T6797]  ? __pfx___kernfs_new_node+0x10/0x10
[  218.205465][ T6797]  ? kernfs_root+0x1c/0x230
[  218.205483][ T6797]  ? kernfs_root+0x1c/0x230
[  218.205503][ T6797]  kernfs_new_node+0x114/0x220
[  218.205526][ T6797]  kernfs_create_link+0xa5/0x1f0
[  218.205553][ T6797]  sysfs_do_create_link_sd+0x85/0x110
[  218.205573][ T6797]  software_node_notify+0xd9/0x1b0
[  218.205595][ T6797]  device_add+0x513/0xbf0
[  218.205616][ T6797]  ? iommufd_test+0x2efb/0x56a0
[  218.205638][ T6797]  iommufd_test+0x3350/0x56a0
[  218.205668][ T6797]  ? __pfx_iommufd_test+0x10/0x10
[  218.205704][ T6797]  ? __lock_acquire+0xad5/0xd80
[  218.205753][ T6797]  iommufd_fops_ioctl+0x4fc/0x610
[  218.205780][ T6797]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  218.205808][ T6797]  ? __fget_files+0x2a/0x420
[  218.205830][ T6797]  ? __fget_files+0x2a/0x420
[  218.205850][ T6797]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  218.205875][ T6797]  __se_sys_ioctl+0xf1/0x160
[  218.205897][ T6797]  do_syscall_64+0xf3/0x230
[  218.205920][ T6797]  ? clear_bhb_loop+0x45/0xa0
[  218.205941][ T6797]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  218.205958][ T6797] RIP: 0033:0x7f33a0d8d169
[  218.205973][ T6797] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  218.205988][ T6797] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  218.206008][ T6797] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  218.206020][ T6797] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  218.206032][ T6797] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  218.206043][ T6797] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  218.206054][ T6797] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  218.206081][ T6797]  </TASK>
[  218.206852][ T6797] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  218.515317][ T6799] FAULT_INJECTION: forcing a failure.
[  218.515317][ T6799] name failslab, interval 1, probability 0, space 0, times 0
[  218.569105][ T6799] CPU: 0 UID: 0 PID: 6799 Comm: syz.0.276 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  218.569134][ T6799] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  218.569145][ T6799] Call Trace:
[  218.569152][ T6799]  <TASK>
[  218.569160][ T6799]  dump_stack_lvl+0x241/0x360
[  218.569193][ T6799]  ? __pfx_dump_stack_lvl+0x10/0x10
[  218.569217][ T6799]  ? __pfx__printk+0x10/0x10
[  218.569246][ T6799]  ? __pfx___might_resched+0x10/0x10
[  218.569272][ T6799]  should_fail_ex+0x424/0x570
[  218.569296][ T6799]  should_failslab+0xac/0x100
[  218.569322][ T6799]  __kmalloc_node_track_caller_noprof+0xe2/0x4d0
[  218.569348][ T6799]  ? __kernfs_new_node+0xa2/0x890
[  218.569364][ T6799]  ? kernel_text_address+0xa7/0xe0
[  218.569384][ T6799]  kstrdup+0x42/0x100
[  218.569407][ T6799]  __kernfs_new_node+0xa2/0x890
[  218.569426][ T6799]  ? __lock_acquire+0xad5/0xd80
[  218.569449][ T6799]  ? __pfx___kernfs_new_node+0x10/0x10
[  218.569478][ T6799]  ? kernfs_root+0x1c/0x230
[  218.569496][ T6799]  ? kernfs_root+0x1c/0x230
[  218.569515][ T6799]  kernfs_new_node+0x114/0x220
[  218.569538][ T6799]  kernfs_create_dir_ns+0x43/0x120
[  218.569561][ T6799]  sysfs_create_dir_ns+0x1a2/0x3f0
[  218.569582][ T6799]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  218.569608][ T6799]  kobject_add_internal+0x435/0x8d0
[  218.569640][ T6799]  kobject_add+0x15b/0x230
[  218.569663][ T6799]  ? kobject_put+0x43d/0x480
[  218.569684][ T6799]  ? __pfx_kobject_add+0x10/0x10
[  218.569707][ T6799]  ? bus_get_dev_root+0x127/0x160
[  218.569729][ T6799]  ? get_device_parent+0x405/0x410
[  218.569753][ T6799]  ? device_add+0x318/0xbf0
[  218.569774][ T6799]  device_add+0x4e5/0xbf0
[  218.569795][ T6799]  ? iommufd_test+0x2efb/0x56a0
[  218.569816][ T6799]  iommufd_test+0x3350/0x56a0
[  218.569845][ T6799]  ? __pfx_iommufd_test+0x10/0x10
[  218.569875][ T6799]  ? __lock_acquire+0xad5/0xd80
[  218.569924][ T6799]  iommufd_fops_ioctl+0x4fc/0x610
[  218.569952][ T6799]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  218.569979][ T6799]  ? __fget_files+0x2a/0x420
[  218.570001][ T6799]  ? __fget_files+0x2a/0x420
[  218.570022][ T6799]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  218.570046][ T6799]  __se_sys_ioctl+0xf1/0x160
[  218.570069][ T6799]  do_syscall_64+0xf3/0x230
[  218.570090][ T6799]  ? clear_bhb_loop+0x45/0xa0
[  218.570111][ T6799]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  218.570132][ T6799] RIP: 0033:0x7f33a0d8d169
[  218.570148][ T6799] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  218.570163][ T6799] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  218.570182][ T6799] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  218.570196][ T6799] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  218.570207][ T6799] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  218.570218][ T6799] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  218.570229][ T6799] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  218.570256][ T6799]  </TASK>
[  218.570329][ T6799] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  218.917444][ T6801] FAULT_INJECTION: forcing a failure.
[  218.917444][ T6801] name failslab, interval 1, probability 0, space 0, times 0
[  218.961604][ T6801] CPU: 0 UID: 0 PID: 6801 Comm: syz.0.277 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  218.961633][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  218.961644][ T6801] Call Trace:
[  218.961652][ T6801]  <TASK>
[  218.961659][ T6801]  dump_stack_lvl+0x241/0x360
[  218.961693][ T6801]  ? __pfx_dump_stack_lvl+0x10/0x10
[  218.961716][ T6801]  ? __pfx__printk+0x10/0x10
[  218.961745][ T6801]  ? __pfx___might_resched+0x10/0x10
[  218.961771][ T6801]  should_fail_ex+0x424/0x570
[  218.961794][ T6801]  should_failslab+0xac/0x100
[  218.961819][ T6801]  kmem_cache_alloc_noprof+0x78/0x390
[  218.961842][ T6801]  ? __kernfs_new_node+0xdf/0x890
[  218.961865][ T6801]  __kernfs_new_node+0xdf/0x890
[  218.961883][ T6801]  ? __lock_acquire+0xad5/0xd80
[  218.961909][ T6801]  ? __pfx___kernfs_new_node+0x10/0x10
[  218.961936][ T6801]  ? kernfs_root+0x1c/0x230
[  218.961954][ T6801]  ? kernfs_root+0x1c/0x230
[  218.961974][ T6801]  kernfs_new_node+0x114/0x220
[  218.961998][ T6801]  kernfs_create_link+0xa5/0x1f0
[  218.962024][ T6801]  sysfs_do_create_link_sd+0x85/0x110
[  218.962043][ T6801]  software_node_notify+0xd9/0x1b0
[  218.962065][ T6801]  device_add+0x513/0xbf0
[  218.962086][ T6801]  ? iommufd_test+0x2efb/0x56a0
[  218.962107][ T6801]  iommufd_test+0x3350/0x56a0
[  218.962138][ T6801]  ? __pfx_iommufd_test+0x10/0x10
[  218.962166][ T6801]  ? __lock_acquire+0xad5/0xd80
[  218.962216][ T6801]  iommufd_fops_ioctl+0x4fc/0x610
[  218.962243][ T6801]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  218.962271][ T6801]  ? __fget_files+0x2a/0x420
[  218.962292][ T6801]  ? __fget_files+0x2a/0x420
[  218.962312][ T6801]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  218.962336][ T6801]  __se_sys_ioctl+0xf1/0x160
[  218.962366][ T6801]  do_syscall_64+0xf3/0x230
[  218.962388][ T6801]  ? clear_bhb_loop+0x45/0xa0
[  218.962409][ T6801]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  218.962426][ T6801] RIP: 0033:0x7f33a0d8d169
[  218.962443][ T6801] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  218.962457][ T6801] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  218.962477][ T6801] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  218.962490][ T6801] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  218.962502][ T6801] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  218.962513][ T6801] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  218.962524][ T6801] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  218.962552][ T6801]  </TASK>
[  218.963297][ T6801] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  219.323355][ T6803] FAULT_INJECTION: forcing a failure.
[  219.323355][ T6803] name failslab, interval 1, probability 0, space 0, times 0
[  219.336139][ T6803] CPU: 0 UID: 0 PID: 6803 Comm: syz.0.278 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  219.336164][ T6803] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  219.336176][ T6803] Call Trace:
[  219.336183][ T6803]  <TASK>
[  219.336192][ T6803]  dump_stack_lvl+0x241/0x360
[  219.336224][ T6803]  ? __pfx_dump_stack_lvl+0x10/0x10
[  219.336248][ T6803]  ? __pfx__printk+0x10/0x10
[  219.336276][ T6803]  ? __pfx___might_resched+0x10/0x10
[  219.336302][ T6803]  should_fail_ex+0x424/0x570
[  219.336326][ T6803]  should_failslab+0xac/0x100
[  219.336351][ T6803]  kmem_cache_alloc_noprof+0x78/0x390
[  219.336372][ T6803]  ? __kernfs_new_node+0xdf/0x890
[  219.336395][ T6803]  __kernfs_new_node+0xdf/0x890
[  219.336412][ T6803]  ? __lock_acquire+0xad5/0xd80
[  219.336437][ T6803]  ? __pfx___kernfs_new_node+0x10/0x10
[  219.336463][ T6803]  ? kernfs_root+0x1c/0x230
[  219.336479][ T6803]  ? kernfs_root+0x1c/0x230
[  219.336495][ T6803]  kernfs_new_node+0x114/0x220
[  219.336516][ T6803]  kernfs_create_link+0xa5/0x1f0
[  219.336539][ T6803]  sysfs_do_create_link_sd+0x85/0x110
[  219.336559][ T6803]  software_node_notify+0xd9/0x1b0
[  219.336580][ T6803]  device_add+0x513/0xbf0
[  219.336600][ T6803]  ? iommufd_test+0x2efb/0x56a0
[  219.336630][ T6803]  iommufd_test+0x3350/0x56a0
[  219.336661][ T6803]  ? __pfx_iommufd_test+0x10/0x10
[  219.336690][ T6803]  ? __lock_acquire+0xad5/0xd80
[  219.336739][ T6803]  iommufd_fops_ioctl+0x4fc/0x610
[  219.336765][ T6803]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  219.336792][ T6803]  ? __fget_files+0x2a/0x420
[  219.336814][ T6803]  ? __fget_files+0x2a/0x420
[  219.336834][ T6803]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  219.336881][ T6803]  __se_sys_ioctl+0xf1/0x160
[  219.336910][ T6803]  do_syscall_64+0xf3/0x230
[  219.336933][ T6803]  ? clear_bhb_loop+0x45/0xa0
[  219.336953][ T6803]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  219.336971][ T6803] RIP: 0033:0x7f33a0d8d169
[  219.336987][ T6803] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  219.337002][ T6803] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  219.337021][ T6803] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  219.337034][ T6803] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  219.337046][ T6803] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  219.337057][ T6803] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  219.337067][ T6803] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  219.337095][ T6803]  </TASK>
[  219.337863][ T6803] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  219.685656][ T6805] FAULT_INJECTION: forcing a failure.
[  219.685656][ T6805] name failslab, interval 1, probability 0, space 0, times 0
[  219.703243][ T6805] CPU: 1 UID: 0 PID: 6805 Comm: syz.0.279 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  219.703271][ T6805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  219.703282][ T6805] Call Trace:
[  219.703290][ T6805]  <TASK>
[  219.703298][ T6805]  dump_stack_lvl+0x241/0x360
[  219.703330][ T6805]  ? __pfx_dump_stack_lvl+0x10/0x10
[  219.703349][ T6805]  ? __pfx__printk+0x10/0x10
[  219.703371][ T6805]  ? __pfx___might_resched+0x10/0x10
[  219.703391][ T6805]  should_fail_ex+0x424/0x570
[  219.703415][ T6805]  should_failslab+0xac/0x100
[  219.703439][ T6805]  kmem_cache_alloc_noprof+0x78/0x390
[  219.703461][ T6805]  ? __kernfs_new_node+0xdf/0x890
[  219.703484][ T6805]  __kernfs_new_node+0xdf/0x890
[  219.703502][ T6805]  ? __lock_acquire+0xad5/0xd80
[  219.703527][ T6805]  ? __pfx___kernfs_new_node+0x10/0x10
[  219.703554][ T6805]  ? kernfs_root+0x1c/0x230
[  219.703581][ T6805]  ? kernfs_root+0x1c/0x230
[  219.703601][ T6805]  kernfs_new_node+0x114/0x220
[  219.703624][ T6805]  kernfs_create_link+0xa5/0x1f0
[  219.703649][ T6805]  sysfs_do_create_link_sd+0x85/0x110
[  219.703668][ T6805]  software_node_notify+0xd9/0x1b0
[  219.703691][ T6805]  device_add+0x513/0xbf0
[  219.703712][ T6805]  ? iommufd_test+0x2efb/0x56a0
[  219.703733][ T6805]  iommufd_test+0x3350/0x56a0
[  219.703763][ T6805]  ? __pfx_iommufd_test+0x10/0x10
[  219.703791][ T6805]  ? __lock_acquire+0xad5/0xd80
[  219.703840][ T6805]  iommufd_fops_ioctl+0x4fc/0x610
[  219.703867][ T6805]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  219.703894][ T6805]  ? __fget_files+0x2a/0x420
[  219.703917][ T6805]  ? __fget_files+0x2a/0x420
[  219.703936][ T6805]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  219.703961][ T6805]  __se_sys_ioctl+0xf1/0x160
[  219.703984][ T6805]  do_syscall_64+0xf3/0x230
[  219.704005][ T6805]  ? clear_bhb_loop+0x45/0xa0
[  219.704026][ T6805]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  219.704043][ T6805] RIP: 0033:0x7f33a0d8d169
[  219.704059][ T6805] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  219.704073][ T6805] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  219.704092][ T6805] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  219.704105][ T6805] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  219.704117][ T6805] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  219.704127][ T6805] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  219.704138][ T6805] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  219.704162][ T6805]  </TASK>
[  219.704905][ T6805] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  220.039755][ T6807] FAULT_INJECTION: forcing a failure.
[  220.039755][ T6807] name failslab, interval 1, probability 0, space 0, times 0
[  220.058068][ T6807] CPU: 1 UID: 0 PID: 6807 Comm: syz.0.280 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  220.058096][ T6807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  220.058107][ T6807] Call Trace:
[  220.058115][ T6807]  <TASK>
[  220.058124][ T6807]  dump_stack_lvl+0x241/0x360
[  220.058157][ T6807]  ? __pfx_dump_stack_lvl+0x10/0x10
[  220.058180][ T6807]  ? __pfx__printk+0x10/0x10
[  220.058207][ T6807]  ? __pfx___might_resched+0x10/0x10
[  220.058234][ T6807]  should_fail_ex+0x424/0x570
[  220.058257][ T6807]  should_failslab+0xac/0x100
[  220.058283][ T6807]  kmem_cache_alloc_noprof+0x78/0x390
[  220.058307][ T6807]  ? __kernfs_new_node+0xdf/0x890
[  220.058330][ T6807]  __kernfs_new_node+0xdf/0x890
[  220.058349][ T6807]  ? __lock_acquire+0xad5/0xd80
[  220.058372][ T6807]  ? __pfx___kernfs_new_node+0x10/0x10
[  220.058401][ T6807]  ? kernfs_root+0x1c/0x230
[  220.058418][ T6807]  ? kernfs_root+0x1c/0x230
[  220.058437][ T6807]  kernfs_new_node+0x114/0x220
[  220.058460][ T6807]  kernfs_create_dir_ns+0x43/0x120
[  220.058483][ T6807]  sysfs_create_dir_ns+0x1a2/0x3f0
[  220.058503][ T6807]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  220.058529][ T6807]  kobject_add_internal+0x435/0x8d0
[  220.058566][ T6807]  kobject_add+0x15b/0x230
[  220.058590][ T6807]  ? kobject_put+0x43d/0x480
[  220.058611][ T6807]  ? __pfx_kobject_add+0x10/0x10
[  220.058635][ T6807]  ? bus_get_dev_root+0x127/0x160
[  220.058657][ T6807]  ? get_device_parent+0x405/0x410
[  220.058675][ T6807]  ? device_add+0x318/0xbf0
[  220.058696][ T6807]  device_add+0x4e5/0xbf0
[  220.058717][ T6807]  ? iommufd_test+0x2efb/0x56a0
[  220.058739][ T6807]  iommufd_test+0x3350/0x56a0
[  220.058769][ T6807]  ? __pfx_iommufd_test+0x10/0x10
[  220.058799][ T6807]  ? __lock_acquire+0xad5/0xd80
[  220.058848][ T6807]  iommufd_fops_ioctl+0x4fc/0x610
[  220.058874][ T6807]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  220.058899][ T6807]  ? __fget_files+0x2a/0x420
[  220.058921][ T6807]  ? __fget_files+0x2a/0x420
[  220.058941][ T6807]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  220.058966][ T6807]  __se_sys_ioctl+0xf1/0x160
[  220.058988][ T6807]  do_syscall_64+0xf3/0x230
[  220.059010][ T6807]  ? clear_bhb_loop+0x45/0xa0
[  220.059030][ T6807]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  220.059047][ T6807] RIP: 0033:0x7f33a0d8d169
[  220.059064][ T6807] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  220.059079][ T6807] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  220.059099][ T6807] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  220.059111][ T6807] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  220.059123][ T6807] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  220.059134][ T6807] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  220.059145][ T6807] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  220.059173][ T6807]  </TASK>
[  220.059199][ T6807] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  220.388761][ T6809] FAULT_INJECTION: forcing a failure.
[  220.388761][ T6809] name failslab, interval 1, probability 0, space 0, times 0
[  220.403956][ T6809] CPU: 0 UID: 0 PID: 6809 Comm: syz.0.281 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  220.403981][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  220.403993][ T6809] Call Trace:
[  220.404000][ T6809]  <TASK>
[  220.404007][ T6809]  dump_stack_lvl+0x241/0x360
[  220.404039][ T6809]  ? __pfx_dump_stack_lvl+0x10/0x10
[  220.404062][ T6809]  ? __pfx__printk+0x10/0x10
[  220.404088][ T6809]  ? __pfx___might_resched+0x10/0x10
[  220.404113][ T6809]  should_fail_ex+0x424/0x570
[  220.404137][ T6809]  should_failslab+0xac/0x100
[  220.404162][ T6809]  kmem_cache_alloc_noprof+0x78/0x390
[  220.404185][ T6809]  ? __kernfs_new_node+0xdf/0x890
[  220.404208][ T6809]  __kernfs_new_node+0xdf/0x890
[  220.404226][ T6809]  ? __lock_acquire+0xad5/0xd80
[  220.404251][ T6809]  ? __pfx___kernfs_new_node+0x10/0x10
[  220.404293][ T6809]  ? kernfs_root+0x1c/0x230
[  220.404311][ T6809]  ? kernfs_root+0x1c/0x230
[  220.404331][ T6809]  kernfs_new_node+0x114/0x220
[  220.404354][ T6809]  kernfs_create_link+0xa5/0x1f0
[  220.404380][ T6809]  sysfs_do_create_link_sd+0x85/0x110
[  220.404400][ T6809]  software_node_notify+0xd9/0x1b0
[  220.404422][ T6809]  device_add+0x513/0xbf0
[  220.404443][ T6809]  ? iommufd_test+0x2efb/0x56a0
[  220.404465][ T6809]  iommufd_test+0x3350/0x56a0
[  220.404495][ T6809]  ? __pfx_iommufd_test+0x10/0x10
[  220.404525][ T6809]  ? __lock_acquire+0xad5/0xd80
[  220.404574][ T6809]  iommufd_fops_ioctl+0x4fc/0x610
[  220.404601][ T6809]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  220.404627][ T6809]  ? __fget_files+0x2a/0x420
[  220.404649][ T6809]  ? __fget_files+0x2a/0x420
[  220.404669][ T6809]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  220.404694][ T6809]  __se_sys_ioctl+0xf1/0x160
[  220.404716][ T6809]  do_syscall_64+0xf3/0x230
[  220.404738][ T6809]  ? clear_bhb_loop+0x45/0xa0
[  220.404758][ T6809]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  220.404776][ T6809] RIP: 0033:0x7f33a0d8d169
[  220.404792][ T6809] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  220.404807][ T6809] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  220.404826][ T6809] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  220.404839][ T6809] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  220.404850][ T6809] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  220.404862][ T6809] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  220.404872][ T6809] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  220.404900][ T6809]  </TASK>
[  220.405649][ T6809] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  220.750298][ T6811] FAULT_INJECTION: forcing a failure.
[  220.750298][ T6811] name failslab, interval 1, probability 0, space 0, times 0
[  220.766127][ T6811] CPU: 1 UID: 0 PID: 6811 Comm: syz.0.282 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  220.766154][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  220.766165][ T6811] Call Trace:
[  220.766173][ T6811]  <TASK>
[  220.766181][ T6811]  dump_stack_lvl+0x241/0x360
[  220.766214][ T6811]  ? __pfx_dump_stack_lvl+0x10/0x10
[  220.766238][ T6811]  ? __pfx__printk+0x10/0x10
[  220.766263][ T6811]  ? __pfx___might_resched+0x10/0x10
[  220.766289][ T6811]  should_fail_ex+0x424/0x570
[  220.766313][ T6811]  should_failslab+0xac/0x100
[  220.766339][ T6811]  kmem_cache_alloc_noprof+0x78/0x390
[  220.766361][ T6811]  ? __kernfs_new_node+0xdf/0x890
[  220.766384][ T6811]  __kernfs_new_node+0xdf/0x890
[  220.766402][ T6811]  ? __lock_acquire+0xad5/0xd80
[  220.766426][ T6811]  ? __pfx___kernfs_new_node+0x10/0x10
[  220.766453][ T6811]  ? kernfs_root+0x1c/0x230
[  220.766472][ T6811]  ? kernfs_root+0x1c/0x230
[  220.766491][ T6811]  kernfs_new_node+0x114/0x220
[  220.766521][ T6811]  kernfs_create_link+0xa5/0x1f0
[  220.766548][ T6811]  sysfs_do_create_link_sd+0x85/0x110
[  220.766567][ T6811]  software_node_notify+0xd9/0x1b0
[  220.766590][ T6811]  device_add+0x513/0xbf0
[  220.766611][ T6811]  ? iommufd_test+0x2efb/0x56a0
[  220.766633][ T6811]  iommufd_test+0x3350/0x56a0
[  220.766663][ T6811]  ? __pfx_iommufd_test+0x10/0x10
[  220.766692][ T6811]  ? __lock_acquire+0xad5/0xd80
[  220.766742][ T6811]  iommufd_fops_ioctl+0x4fc/0x610
[  220.766768][ T6811]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  220.766795][ T6811]  ? __fget_files+0x2a/0x420
[  220.766817][ T6811]  ? __fget_files+0x2a/0x420
[  220.766836][ T6811]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  220.766861][ T6811]  __se_sys_ioctl+0xf1/0x160
[  220.766883][ T6811]  do_syscall_64+0xf3/0x230
[  220.766905][ T6811]  ? clear_bhb_loop+0x45/0xa0
[  220.766926][ T6811]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  220.766943][ T6811] RIP: 0033:0x7f33a0d8d169
[  220.766959][ T6811] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  220.766974][ T6811] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  220.766993][ T6811] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  220.767006][ T6811] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  220.767018][ T6811] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  220.767029][ T6811] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  220.767040][ T6811] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  220.767068][ T6811]  </TASK>
[  220.767850][ T6811] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  221.066872][ T6813] FAULT_INJECTION: forcing a failure.
[  221.066872][ T6813] name failslab, interval 1, probability 0, space 0, times 0
[  221.109232][ T6813] CPU: 0 UID: 0 PID: 6813 Comm: syz.0.283 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  221.109262][ T6813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  221.109274][ T6813] Call Trace:
[  221.109281][ T6813]  <TASK>
[  221.109289][ T6813]  dump_stack_lvl+0x241/0x360
[  221.109323][ T6813]  ? __pfx_dump_stack_lvl+0x10/0x10
[  221.109347][ T6813]  ? __pfx__printk+0x10/0x10
[  221.109374][ T6813]  ? __pfx___might_resched+0x10/0x10
[  221.109409][ T6813]  should_fail_ex+0x424/0x570
[  221.109433][ T6813]  should_failslab+0xac/0x100
[  221.109458][ T6813]  kmem_cache_alloc_noprof+0x78/0x390
[  221.109481][ T6813]  ? __kernfs_new_node+0xdf/0x890
[  221.109505][ T6813]  __kernfs_new_node+0xdf/0x890
[  221.109523][ T6813]  ? __lock_acquire+0xad5/0xd80
[  221.109547][ T6813]  ? __pfx___kernfs_new_node+0x10/0x10
[  221.109575][ T6813]  ? kernfs_root+0x1c/0x230
[  221.109592][ T6813]  ? kernfs_root+0x1c/0x230
[  221.109612][ T6813]  kernfs_new_node+0x114/0x220
[  221.109635][ T6813]  kernfs_create_link+0xa5/0x1f0
[  221.109661][ T6813]  sysfs_do_create_link_sd+0x85/0x110
[  221.109680][ T6813]  software_node_notify+0xd9/0x1b0
[  221.109702][ T6813]  device_add+0x513/0xbf0
[  221.109723][ T6813]  ? iommufd_test+0x2efb/0x56a0
[  221.109744][ T6813]  iommufd_test+0x3350/0x56a0
[  221.109774][ T6813]  ? __pfx_iommufd_test+0x10/0x10
[  221.109803][ T6813]  ? __lock_acquire+0xad5/0xd80
[  221.109853][ T6813]  iommufd_fops_ioctl+0x4fc/0x610
[  221.109879][ T6813]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  221.109906][ T6813]  ? __fget_files+0x2a/0x420
[  221.109928][ T6813]  ? __fget_files+0x2a/0x420
[  221.109947][ T6813]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  221.109972][ T6813]  __se_sys_ioctl+0xf1/0x160
[  221.109995][ T6813]  do_syscall_64+0xf3/0x230
[  221.110017][ T6813]  ? clear_bhb_loop+0x45/0xa0
[  221.110038][ T6813]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  221.110055][ T6813] RIP: 0033:0x7f33a0d8d169
[  221.110071][ T6813] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  221.110085][ T6813] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  221.110105][ T6813] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  221.110118][ T6813] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  221.110129][ T6813] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  221.110140][ T6813] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  221.110149][ T6813] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  221.110177][ T6813]  </TASK>
[  221.110927][ T6813] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  221.457538][ T6815] FAULT_INJECTION: forcing a failure.
[  221.457538][ T6815] name failslab, interval 1, probability 0, space 0, times 0
[  221.476065][ T6815] CPU: 1 UID: 0 PID: 6815 Comm: syz.0.284 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  221.476093][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  221.476112][ T6815] Call Trace:
[  221.476120][ T6815]  <TASK>
[  221.476128][ T6815]  dump_stack_lvl+0x241/0x360
[  221.476161][ T6815]  ? __pfx_dump_stack_lvl+0x10/0x10
[  221.476185][ T6815]  ? __pfx__printk+0x10/0x10
[  221.476212][ T6815]  ? __pfx___might_resched+0x10/0x10
[  221.476239][ T6815]  should_fail_ex+0x424/0x570
[  221.476263][ T6815]  should_failslab+0xac/0x100
[  221.476289][ T6815]  kmem_cache_alloc_noprof+0x78/0x390
[  221.476312][ T6815]  ? __kernfs_new_node+0xdf/0x890
[  221.476335][ T6815]  __kernfs_new_node+0xdf/0x890
[  221.476353][ T6815]  ? __lock_acquire+0xad5/0xd80
[  221.476377][ T6815]  ? __pfx___kernfs_new_node+0x10/0x10
[  221.476402][ T6815]  ? kernfs_root+0x1c/0x230
[  221.476421][ T6815]  ? kernfs_root+0x1c/0x230
[  221.476441][ T6815]  kernfs_new_node+0x114/0x220
[  221.476464][ T6815]  kernfs_create_link+0xa5/0x1f0
[  221.476490][ T6815]  sysfs_do_create_link_sd+0x85/0x110
[  221.476510][ T6815]  software_node_notify+0xd9/0x1b0
[  221.476533][ T6815]  device_add+0x513/0xbf0
[  221.476554][ T6815]  ? iommufd_test+0x2efb/0x56a0
[  221.476575][ T6815]  iommufd_test+0x3350/0x56a0
[  221.476605][ T6815]  ? __pfx_iommufd_test+0x10/0x10
[  221.476634][ T6815]  ? __lock_acquire+0xad5/0xd80
[  221.476683][ T6815]  iommufd_fops_ioctl+0x4fc/0x610
[  221.476709][ T6815]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  221.476737][ T6815]  ? __fget_files+0x2a/0x420
[  221.476758][ T6815]  ? __fget_files+0x2a/0x420
[  221.476778][ T6815]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  221.476803][ T6815]  __se_sys_ioctl+0xf1/0x160
[  221.476825][ T6815]  do_syscall_64+0xf3/0x230
[  221.476847][ T6815]  ? clear_bhb_loop+0x45/0xa0
[  221.476868][ T6815]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  221.476885][ T6815] RIP: 0033:0x7f33a0d8d169
[  221.476902][ T6815] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  221.476915][ T6815] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  221.476934][ T6815] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  221.476947][ T6815] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  221.476958][ T6815] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  221.476968][ T6815] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  221.476979][ T6815] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  221.477007][ T6815]  </TASK>
[  221.477783][ T6815] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  221.799420][ T6817] FAULT_INJECTION: forcing a failure.
[  221.799420][ T6817] name failslab, interval 1, probability 0, space 0, times 0
[  221.815188][ T6817] CPU: 0 UID: 0 PID: 6817 Comm: syz.0.285 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  221.815215][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  221.815226][ T6817] Call Trace:
[  221.815234][ T6817]  <TASK>
[  221.815242][ T6817]  dump_stack_lvl+0x241/0x360
[  221.815275][ T6817]  ? __pfx_dump_stack_lvl+0x10/0x10
[  221.815299][ T6817]  ? __pfx__printk+0x10/0x10
[  221.815327][ T6817]  ? __pfx___might_resched+0x10/0x10
[  221.815354][ T6817]  should_fail_ex+0x424/0x570
[  221.815376][ T6817]  should_failslab+0xac/0x100
[  221.815401][ T6817]  kmem_cache_alloc_noprof+0x78/0x390
[  221.815424][ T6817]  ? __kernfs_new_node+0xdf/0x890
[  221.815447][ T6817]  __kernfs_new_node+0xdf/0x890
[  221.815467][ T6817]  ? __lock_acquire+0xad5/0xd80
[  221.815490][ T6817]  ? __pfx___kernfs_new_node+0x10/0x10
[  221.815519][ T6817]  ? kernfs_root+0x1c/0x230
[  221.815537][ T6817]  ? kernfs_root+0x1c/0x230
[  221.815557][ T6817]  kernfs_new_node+0x114/0x220
[  221.815581][ T6817]  kernfs_create_dir_ns+0x43/0x120
[  221.815604][ T6817]  sysfs_create_dir_ns+0x1a2/0x3f0
[  221.815624][ T6817]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  221.815650][ T6817]  kobject_add_internal+0x435/0x8d0
[  221.815682][ T6817]  kobject_add+0x15b/0x230
[  221.815706][ T6817]  ? kobject_put+0x43d/0x480
[  221.815727][ T6817]  ? __pfx_kobject_add+0x10/0x10
[  221.815750][ T6817]  ? bus_get_dev_root+0x127/0x160
[  221.815770][ T6817]  ? get_device_parent+0x405/0x410
[  221.815788][ T6817]  ? device_add+0x318/0xbf0
[  221.815809][ T6817]  device_add+0x4e5/0xbf0
[  221.815830][ T6817]  ? iommufd_test+0x2efb/0x56a0
[  221.815851][ T6817]  iommufd_test+0x3350/0x56a0
[  221.815882][ T6817]  ? __pfx_iommufd_test+0x10/0x10
[  221.815911][ T6817]  ? __lock_acquire+0xad5/0xd80
[  221.815961][ T6817]  iommufd_fops_ioctl+0x4fc/0x610
[  221.815987][ T6817]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  221.816015][ T6817]  ? __fget_files+0x2a/0x420
[  221.816036][ T6817]  ? __fget_files+0x2a/0x420
[  221.816057][ T6817]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  221.816081][ T6817]  __se_sys_ioctl+0xf1/0x160
[  221.816103][ T6817]  do_syscall_64+0xf3/0x230
[  221.816130][ T6817]  ? clear_bhb_loop+0x45/0xa0
[  221.816151][ T6817]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  221.816167][ T6817] RIP: 0033:0x7f33a0d8d169
[  221.816184][ T6817] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  221.816198][ T6817] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  221.816217][ T6817] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  221.816237][ T6817] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  221.816249][ T6817] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  221.816259][ T6817] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  221.816270][ T6817] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  221.816298][ T6817]  </TASK>
[  221.816324][ T6817] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  222.215704][ T6819] FAULT_INJECTION: forcing a failure.
[  222.215704][ T6819] name failslab, interval 1, probability 0, space 0, times 0
[  222.230326][ T6819] CPU: 0 UID: 0 PID: 6819 Comm: syz.0.286 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  222.230352][ T6819] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  222.230370][ T6819] Call Trace:
[  222.230378][ T6819]  <TASK>
[  222.230386][ T6819]  dump_stack_lvl+0x241/0x360
[  222.230421][ T6819]  ? __pfx_dump_stack_lvl+0x10/0x10
[  222.230445][ T6819]  ? __pfx__printk+0x10/0x10
[  222.230473][ T6819]  ? __pfx___might_resched+0x10/0x10
[  222.230499][ T6819]  should_fail_ex+0x424/0x570
[  222.230523][ T6819]  should_failslab+0xac/0x100
[  222.230548][ T6819]  kmem_cache_alloc_noprof+0x78/0x390
[  222.230572][ T6819]  ? __kernfs_new_node+0xdf/0x890
[  222.230595][ T6819]  __kernfs_new_node+0xdf/0x890
[  222.230612][ T6819]  ? __lock_acquire+0xad5/0xd80
[  222.230638][ T6819]  ? __pfx___kernfs_new_node+0x10/0x10
[  222.230665][ T6819]  ? kernfs_root+0x1c/0x230
[  222.230684][ T6819]  ? kernfs_root+0x1c/0x230
[  222.230704][ T6819]  kernfs_new_node+0x114/0x220
[  222.230727][ T6819]  kernfs_create_link+0xa5/0x1f0
[  222.230752][ T6819]  sysfs_do_create_link_sd+0x85/0x110
[  222.230772][ T6819]  software_node_notify+0xd9/0x1b0
[  222.230793][ T6819]  device_add+0x513/0xbf0
[  222.230814][ T6819]  ? iommufd_test+0x2efb/0x56a0
[  222.230835][ T6819]  iommufd_test+0x3350/0x56a0
[  222.230865][ T6819]  ? __pfx_iommufd_test+0x10/0x10
[  222.230895][ T6819]  ? __lock_acquire+0xad5/0xd80
[  222.230944][ T6819]  iommufd_fops_ioctl+0x4fc/0x610
[  222.230971][ T6819]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  222.230997][ T6819]  ? __fget_files+0x2a/0x420
[  222.231020][ T6819]  ? __fget_files+0x2a/0x420
[  222.231040][ T6819]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  222.231065][ T6819]  __se_sys_ioctl+0xf1/0x160
[  222.231087][ T6819]  do_syscall_64+0xf3/0x230
[  222.231109][ T6819]  ? clear_bhb_loop+0x45/0xa0
[  222.231130][ T6819]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  222.231146][ T6819] RIP: 0033:0x7f33a0d8d169
[  222.231162][ T6819] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  222.231176][ T6819] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  222.231195][ T6819] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  222.231208][ T6819] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  222.231220][ T6819] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  222.231230][ T6819] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  222.231241][ T6819] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  222.231269][ T6819]  </TASK>
[  222.498515][ T6819] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  222.540216][ T6821] FAULT_INJECTION: forcing a failure.
[  222.540216][ T6821] name failslab, interval 1, probability 0, space 0, times 0
[  222.568517][ T6821] CPU: 1 UID: 0 PID: 6821 Comm: syz.0.287 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  222.568546][ T6821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  222.568558][ T6821] Call Trace:
[  222.568565][ T6821]  <TASK>
[  222.568573][ T6821]  dump_stack_lvl+0x241/0x360
[  222.568606][ T6821]  ? __pfx_dump_stack_lvl+0x10/0x10
[  222.568631][ T6821]  ? __pfx__printk+0x10/0x10
[  222.568658][ T6821]  ? __pfx___might_resched+0x10/0x10
[  222.568685][ T6821]  should_fail_ex+0x424/0x570
[  222.568709][ T6821]  should_failslab+0xac/0x100
[  222.568735][ T6821]  kmem_cache_alloc_noprof+0x78/0x390
[  222.568758][ T6821]  ? __kernfs_new_node+0xdf/0x890
[  222.568782][ T6821]  __kernfs_new_node+0xdf/0x890
[  222.568799][ T6821]  ? __lock_acquire+0xad5/0xd80
[  222.568824][ T6821]  ? __pfx___kernfs_new_node+0x10/0x10
[  222.568851][ T6821]  ? kernfs_root+0x1c/0x230
[  222.568870][ T6821]  ? kernfs_root+0x1c/0x230
[  222.568889][ T6821]  kernfs_new_node+0x114/0x220
[  222.568912][ T6821]  kernfs_create_link+0xa5/0x1f0
[  222.568938][ T6821]  sysfs_do_create_link_sd+0x85/0x110
[  222.568958][ T6821]  software_node_notify+0xd9/0x1b0
[  222.568980][ T6821]  device_add+0x513/0xbf0
[  222.569002][ T6821]  ? iommufd_test+0x2efb/0x56a0
[  222.569023][ T6821]  iommufd_test+0x3350/0x56a0
[  222.569053][ T6821]  ? __pfx_iommufd_test+0x10/0x10
[  222.569081][ T6821]  ? __lock_acquire+0xad5/0xd80
[  222.569130][ T6821]  iommufd_fops_ioctl+0x4fc/0x610
[  222.569156][ T6821]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  222.569183][ T6821]  ? __fget_files+0x2a/0x420
[  222.569205][ T6821]  ? __fget_files+0x2a/0x420
[  222.569225][ T6821]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  222.569250][ T6821]  __se_sys_ioctl+0xf1/0x160
[  222.569273][ T6821]  do_syscall_64+0xf3/0x230
[  222.569296][ T6821]  ? clear_bhb_loop+0x45/0xa0
[  222.569323][ T6821]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  222.569340][ T6821] RIP: 0033:0x7f33a0d8d169
[  222.569356][ T6821] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  222.569370][ T6821] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  222.569390][ T6821] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  222.569403][ T6821] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  222.569414][ T6821] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  222.569425][ T6821] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  222.569436][ T6821] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  222.569462][ T6821]  </TASK>
[  222.570213][ T6821] iommufd_mock iommufd_mock0: Adding to iommu group 0
2025/04/10 11:57:16 executed programs: 274
[  222.894974][ T6823] FAULT_INJECTION: forcing a failure.
[  222.894974][ T6823] name failslab, interval 1, probability 0, space 0, times 0
[  222.934414][ T6823] CPU: 0 UID: 0 PID: 6823 Comm: syz.0.288 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  222.934442][ T6823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  222.934452][ T6823] Call Trace:
[  222.934460][ T6823]  <TASK>
[  222.934469][ T6823]  dump_stack_lvl+0x241/0x360
[  222.934502][ T6823]  ? __pfx_dump_stack_lvl+0x10/0x10
[  222.934526][ T6823]  ? __pfx__printk+0x10/0x10
[  222.934554][ T6823]  ? __pfx___might_resched+0x10/0x10
[  222.934581][ T6823]  should_fail_ex+0x424/0x570
[  222.934605][ T6823]  should_failslab+0xac/0x100
[  222.934631][ T6823]  kmem_cache_alloc_noprof+0x78/0x390
[  222.934654][ T6823]  ? __kernfs_new_node+0xdf/0x890
[  222.934678][ T6823]  __kernfs_new_node+0xdf/0x890
[  222.934696][ T6823]  ? __lock_acquire+0xad5/0xd80
[  222.934721][ T6823]  ? __pfx___kernfs_new_node+0x10/0x10
[  222.934748][ T6823]  ? kernfs_root+0x1c/0x230
[  222.934766][ T6823]  ? kernfs_root+0x1c/0x230
[  222.934786][ T6823]  kernfs_new_node+0x114/0x220
[  222.934808][ T6823]  kernfs_create_link+0xa5/0x1f0
[  222.934834][ T6823]  sysfs_do_create_link_sd+0x85/0x110
[  222.934854][ T6823]  software_node_notify+0xd9/0x1b0
[  222.934876][ T6823]  device_add+0x513/0xbf0
[  222.934897][ T6823]  ? iommufd_test+0x2efb/0x56a0
[  222.934919][ T6823]  iommufd_test+0x3350/0x56a0
[  222.934949][ T6823]  ? __pfx_iommufd_test+0x10/0x10
[  222.934976][ T6823]  ? __lock_acquire+0xad5/0xd80
[  222.935026][ T6823]  iommufd_fops_ioctl+0x4fc/0x610
[  222.935053][ T6823]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  222.935080][ T6823]  ? __fget_files+0x2a/0x420
[  222.935102][ T6823]  ? __fget_files+0x2a/0x420
[  222.935122][ T6823]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  222.935147][ T6823]  __se_sys_ioctl+0xf1/0x160
[  222.935170][ T6823]  do_syscall_64+0xf3/0x230
[  222.935191][ T6823]  ? clear_bhb_loop+0x45/0xa0
[  222.935213][ T6823]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  222.935236][ T6823] RIP: 0033:0x7f33a0d8d169
[  222.935252][ T6823] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  222.935266][ T6823] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  222.935286][ T6823] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  222.935298][ T6823] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  222.935309][ T6823] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  222.935320][ T6823] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  222.935331][ T6823] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  222.935359][ T6823]  </TASK>
[  222.936116][ T6823] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  223.251790][ T6825] FAULT_INJECTION: forcing a failure.
[  223.251790][ T6825] name failslab, interval 1, probability 0, space 0, times 0
[  223.264584][ T6825] CPU: 0 UID: 0 PID: 6825 Comm: syz.0.289 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  223.264608][ T6825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  223.264619][ T6825] Call Trace:
[  223.264627][ T6825]  <TASK>
[  223.264636][ T6825]  dump_stack_lvl+0x241/0x360
[  223.264668][ T6825]  ? __pfx_dump_stack_lvl+0x10/0x10
[  223.264692][ T6825]  ? __pfx__printk+0x10/0x10
[  223.264720][ T6825]  ? __pfx___might_resched+0x10/0x10
[  223.264746][ T6825]  should_fail_ex+0x424/0x570
[  223.264770][ T6825]  should_failslab+0xac/0x100
[  223.264796][ T6825]  kmem_cache_alloc_noprof+0x78/0x390
[  223.264819][ T6825]  ? __kernfs_new_node+0xdf/0x890
[  223.264843][ T6825]  __kernfs_new_node+0xdf/0x890
[  223.264863][ T6825]  ? __lock_acquire+0xad5/0xd80
[  223.264886][ T6825]  ? __pfx___kernfs_new_node+0x10/0x10
[  223.264915][ T6825]  ? kernfs_root+0x1c/0x230
[  223.264934][ T6825]  ? kernfs_root+0x1c/0x230
[  223.264953][ T6825]  kernfs_new_node+0x114/0x220
[  223.264984][ T6825]  kernfs_create_dir_ns+0x43/0x120
[  223.265008][ T6825]  sysfs_create_dir_ns+0x1a2/0x3f0
[  223.265029][ T6825]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  223.265056][ T6825]  kobject_add_internal+0x435/0x8d0
[  223.265088][ T6825]  kobject_add+0x15b/0x230
[  223.265112][ T6825]  ? kobject_put+0x43d/0x480
[  223.265133][ T6825]  ? __pfx_kobject_add+0x10/0x10
[  223.265156][ T6825]  ? bus_get_dev_root+0x127/0x160
[  223.265178][ T6825]  ? get_device_parent+0x405/0x410
[  223.265196][ T6825]  ? device_add+0x318/0xbf0
[  223.265217][ T6825]  device_add+0x4e5/0xbf0
[  223.265237][ T6825]  ? iommufd_test+0x2efb/0x56a0
[  223.265259][ T6825]  iommufd_test+0x3350/0x56a0
[  223.265290][ T6825]  ? __pfx_iommufd_test+0x10/0x10
[  223.265320][ T6825]  ? __lock_acquire+0xad5/0xd80
[  223.265370][ T6825]  iommufd_fops_ioctl+0x4fc/0x610
[  223.265396][ T6825]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  223.265423][ T6825]  ? __fget_files+0x2a/0x420
[  223.265444][ T6825]  ? __fget_files+0x2a/0x420
[  223.265465][ T6825]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  223.265490][ T6825]  __se_sys_ioctl+0xf1/0x160
[  223.265512][ T6825]  do_syscall_64+0xf3/0x230
[  223.265533][ T6825]  ? clear_bhb_loop+0x45/0xa0
[  223.265554][ T6825]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  223.265571][ T6825] RIP: 0033:0x7f33a0d8d169
[  223.265587][ T6825] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  223.265602][ T6825] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  223.265621][ T6825] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  223.265634][ T6825] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  223.265645][ T6825] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  223.265656][ T6825] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  223.265666][ T6825] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  223.265694][ T6825]  </TASK>
[  223.265723][ T6825] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  223.659071][ T6827] FAULT_INJECTION: forcing a failure.
[  223.659071][ T6827] name failslab, interval 1, probability 0, space 0, times 0
[  223.680029][ T6827] CPU: 0 UID: 0 PID: 6827 Comm: syz.0.290 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  223.680057][ T6827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  223.680068][ T6827] Call Trace:
[  223.680076][ T6827]  <TASK>
[  223.680084][ T6827]  dump_stack_lvl+0x241/0x360
[  223.680116][ T6827]  ? __pfx_dump_stack_lvl+0x10/0x10
[  223.680141][ T6827]  ? __pfx__printk+0x10/0x10
[  223.680168][ T6827]  ? __pfx___might_resched+0x10/0x10
[  223.680194][ T6827]  should_fail_ex+0x424/0x570
[  223.680218][ T6827]  should_failslab+0xac/0x100
[  223.680244][ T6827]  kmem_cache_alloc_noprof+0x78/0x390
[  223.680267][ T6827]  ? __kernfs_new_node+0xdf/0x890
[  223.680290][ T6827]  __kernfs_new_node+0xdf/0x890
[  223.680307][ T6827]  ? __lock_acquire+0xad5/0xd80
[  223.680333][ T6827]  ? __pfx___kernfs_new_node+0x10/0x10
[  223.680359][ T6827]  ? kernfs_root+0x1c/0x230
[  223.680378][ T6827]  ? kernfs_root+0x1c/0x230
[  223.680398][ T6827]  kernfs_new_node+0x114/0x220
[  223.680421][ T6827]  kernfs_create_link+0xa5/0x1f0
[  223.680447][ T6827]  sysfs_do_create_link_sd+0x85/0x110
[  223.680467][ T6827]  software_node_notify+0xd9/0x1b0
[  223.680489][ T6827]  device_add+0x513/0xbf0
[  223.680510][ T6827]  ? iommufd_test+0x2efb/0x56a0
[  223.680532][ T6827]  iommufd_test+0x3350/0x56a0
[  223.680562][ T6827]  ? __pfx_iommufd_test+0x10/0x10
[  223.680591][ T6827]  ? __lock_acquire+0xad5/0xd80
[  223.680640][ T6827]  iommufd_fops_ioctl+0x4fc/0x610
[  223.680667][ T6827]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  223.680694][ T6827]  ? __fget_files+0x2a/0x420
[  223.680716][ T6827]  ? __fget_files+0x2a/0x420
[  223.680735][ T6827]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  223.680760][ T6827]  __se_sys_ioctl+0xf1/0x160
[  223.680783][ T6827]  do_syscall_64+0xf3/0x230
[  223.680804][ T6827]  ? clear_bhb_loop+0x45/0xa0
[  223.680825][ T6827]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  223.680841][ T6827] RIP: 0033:0x7f33a0d8d169
[  223.680857][ T6827] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  223.680871][ T6827] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  223.680890][ T6827] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  223.680903][ T6827] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  223.680915][ T6827] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  223.680925][ T6827] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  223.680942][ T6827] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  223.680969][ T6827]  </TASK>
[  223.945310][ T6827] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  224.019806][ T6829] FAULT_INJECTION: forcing a failure.
[  224.019806][ T6829] name failslab, interval 1, probability 0, space 0, times 0
[  224.040410][ T6829] CPU: 0 UID: 0 PID: 6829 Comm: syz.0.291 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  224.040437][ T6829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  224.040449][ T6829] Call Trace:
[  224.040456][ T6829]  <TASK>
[  224.040465][ T6829]  dump_stack_lvl+0x241/0x360
[  224.040497][ T6829]  ? __pfx_dump_stack_lvl+0x10/0x10
[  224.040521][ T6829]  ? __pfx__printk+0x10/0x10
[  224.040549][ T6829]  ? __pfx___might_resched+0x10/0x10
[  224.040575][ T6829]  should_fail_ex+0x424/0x570
[  224.040598][ T6829]  should_failslab+0xac/0x100
[  224.040624][ T6829]  kmem_cache_alloc_noprof+0x78/0x390
[  224.040647][ T6829]  ? __kernfs_new_node+0xdf/0x890
[  224.040670][ T6829]  __kernfs_new_node+0xdf/0x890
[  224.040688][ T6829]  ? __lock_acquire+0xad5/0xd80
[  224.040714][ T6829]  ? __pfx___kernfs_new_node+0x10/0x10
[  224.040741][ T6829]  ? kernfs_root+0x1c/0x230
[  224.040759][ T6829]  ? kernfs_root+0x1c/0x230
[  224.040778][ T6829]  kernfs_new_node+0x114/0x220
[  224.040802][ T6829]  kernfs_create_link+0xa5/0x1f0
[  224.040828][ T6829]  sysfs_do_create_link_sd+0x85/0x110
[  224.040848][ T6829]  software_node_notify+0xd9/0x1b0
[  224.040871][ T6829]  device_add+0x513/0xbf0
[  224.040892][ T6829]  ? iommufd_test+0x2efb/0x56a0
[  224.040913][ T6829]  iommufd_test+0x3350/0x56a0
[  224.040942][ T6829]  ? __pfx_iommufd_test+0x10/0x10
[  224.040972][ T6829]  ? __lock_acquire+0xad5/0xd80
[  224.041021][ T6829]  iommufd_fops_ioctl+0x4fc/0x610
[  224.041047][ T6829]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  224.041074][ T6829]  ? __fget_files+0x2a/0x420
[  224.041096][ T6829]  ? __fget_files+0x2a/0x420
[  224.041115][ T6829]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  224.041140][ T6829]  __se_sys_ioctl+0xf1/0x160
[  224.041162][ T6829]  do_syscall_64+0xf3/0x230
[  224.041190][ T6829]  ? clear_bhb_loop+0x45/0xa0
[  224.041211][ T6829]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  224.041228][ T6829] RIP: 0033:0x7f33a0d8d169
[  224.041244][ T6829] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  224.041258][ T6829] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  224.041277][ T6829] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  224.041290][ T6829] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  224.041301][ T6829] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  224.041312][ T6829] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  224.041322][ T6829] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  224.041350][ T6829]  </TASK>
[  224.309130][ T6829] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  224.342459][ T6831] FAULT_INJECTION: forcing a failure.
[  224.342459][ T6831] name failslab, interval 1, probability 0, space 0, times 0
[  224.355183][ T6831] CPU: 0 UID: 0 PID: 6831 Comm: syz.0.292 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  224.355206][ T6831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  224.355217][ T6831] Call Trace:
[  224.355225][ T6831]  <TASK>
[  224.355233][ T6831]  dump_stack_lvl+0x241/0x360
[  224.355266][ T6831]  ? __pfx_dump_stack_lvl+0x10/0x10
[  224.355290][ T6831]  ? __pfx__printk+0x10/0x10
[  224.355317][ T6831]  ? __pfx___might_resched+0x10/0x10
[  224.355344][ T6831]  should_fail_ex+0x424/0x570
[  224.355368][ T6831]  should_failslab+0xac/0x100
[  224.355393][ T6831]  kmem_cache_alloc_noprof+0x78/0x390
[  224.355416][ T6831]  ? __kernfs_new_node+0xdf/0x890
[  224.355440][ T6831]  __kernfs_new_node+0xdf/0x890
[  224.355458][ T6831]  ? __lock_acquire+0xad5/0xd80
[  224.355483][ T6831]  ? __pfx___kernfs_new_node+0x10/0x10
[  224.355510][ T6831]  ? kernfs_root+0x1c/0x230
[  224.355528][ T6831]  ? kernfs_root+0x1c/0x230
[  224.355547][ T6831]  kernfs_new_node+0x114/0x220
[  224.355571][ T6831]  kernfs_create_link+0xa5/0x1f0
[  224.355598][ T6831]  sysfs_do_create_link_sd+0x85/0x110
[  224.355618][ T6831]  software_node_notify+0xd9/0x1b0
[  224.355640][ T6831]  device_add+0x513/0xbf0
[  224.355662][ T6831]  ? iommufd_test+0x2efb/0x56a0
[  224.355682][ T6831]  iommufd_test+0x3350/0x56a0
[  224.355712][ T6831]  ? __pfx_iommufd_test+0x10/0x10
[  224.355742][ T6831]  ? __lock_acquire+0xad5/0xd80
[  224.355791][ T6831]  iommufd_fops_ioctl+0x4fc/0x610
[  224.355817][ T6831]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  224.355844][ T6831]  ? __fget_files+0x2a/0x420
[  224.355866][ T6831]  ? __fget_files+0x2a/0x420
[  224.355885][ T6831]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  224.355909][ T6831]  __se_sys_ioctl+0xf1/0x160
[  224.355932][ T6831]  do_syscall_64+0xf3/0x230
[  224.355954][ T6831]  ? clear_bhb_loop+0x45/0xa0
[  224.355975][ T6831]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  224.355992][ T6831] RIP: 0033:0x7f33a0d8d169
[  224.356007][ T6831] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  224.356022][ T6831] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  224.356042][ T6831] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  224.356054][ T6831] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  224.356066][ T6831] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  224.356077][ T6831] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  224.356086][ T6831] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  224.356114][ T6831]  </TASK>
[  224.356901][ T6831] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  224.666098][ T6833] FAULT_INJECTION: forcing a failure.
[  224.666098][ T6833] name failslab, interval 1, probability 0, space 0, times 0
[  224.722178][ T6833] CPU: 1 UID: 0 PID: 6833 Comm: syz.0.293 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  224.722205][ T6833] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  224.722216][ T6833] Call Trace:
[  224.722224][ T6833]  <TASK>
[  224.722232][ T6833]  dump_stack_lvl+0x241/0x360
[  224.722264][ T6833]  ? __pfx_dump_stack_lvl+0x10/0x10
[  224.722289][ T6833]  ? __pfx__printk+0x10/0x10
[  224.722317][ T6833]  ? __pfx___might_resched+0x10/0x10
[  224.722344][ T6833]  should_fail_ex+0x424/0x570
[  224.722367][ T6833]  should_failslab+0xac/0x100
[  224.722393][ T6833]  kmem_cache_alloc_noprof+0x78/0x390
[  224.722417][ T6833]  ? __kernfs_new_node+0xdf/0x890
[  224.722440][ T6833]  __kernfs_new_node+0xdf/0x890
[  224.722460][ T6833]  ? __lock_acquire+0xad5/0xd80
[  224.722484][ T6833]  ? __pfx___kernfs_new_node+0x10/0x10
[  224.722513][ T6833]  ? kernfs_root+0x1c/0x230
[  224.722532][ T6833]  ? kernfs_root+0x1c/0x230
[  224.722552][ T6833]  kernfs_new_node+0x114/0x220
[  224.722576][ T6833]  kernfs_create_dir_ns+0x43/0x120
[  224.722599][ T6833]  sysfs_create_dir_ns+0x1a2/0x3f0
[  224.722621][ T6833]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  224.722647][ T6833]  kobject_add_internal+0x435/0x8d0
[  224.722680][ T6833]  kobject_add+0x15b/0x230
[  224.722703][ T6833]  ? kobject_put+0x43d/0x480
[  224.722724][ T6833]  ? __pfx_kobject_add+0x10/0x10
[  224.722747][ T6833]  ? bus_get_dev_root+0x127/0x160
[  224.722768][ T6833]  ? get_device_parent+0x405/0x410
[  224.722787][ T6833]  ? device_add+0x318/0xbf0
[  224.722809][ T6833]  device_add+0x4e5/0xbf0
[  224.722830][ T6833]  ? iommufd_test+0x2efb/0x56a0
[  224.722851][ T6833]  iommufd_test+0x3350/0x56a0
[  224.722885][ T6833]  ? __pfx_iommufd_test+0x10/0x10
[  224.722916][ T6833]  ? __lock_acquire+0xad5/0xd80
[  224.722965][ T6833]  iommufd_fops_ioctl+0x4fc/0x610
[  224.722993][ T6833]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  224.723020][ T6833]  ? __fget_files+0x2a/0x420
[  224.723048][ T6833]  ? __fget_files+0x2a/0x420
[  224.723068][ T6833]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  224.723092][ T6833]  __se_sys_ioctl+0xf1/0x160
[  224.723115][ T6833]  do_syscall_64+0xf3/0x230
[  224.723136][ T6833]  ? clear_bhb_loop+0x45/0xa0
[  224.723156][ T6833]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  224.723173][ T6833] RIP: 0033:0x7f33a0d8d169
[  224.723189][ T6833] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  224.723203][ T6833] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  224.723222][ T6833] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  224.723236][ T6833] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  224.723247][ T6833] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  224.723258][ T6833] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  224.723268][ T6833] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  224.723296][ T6833]  </TASK>
[  224.723382][ T6833] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  225.059928][ T6835] FAULT_INJECTION: forcing a failure.
[  225.059928][ T6835] name failslab, interval 1, probability 0, space 0, times 0
[  225.073875][ T6835] CPU: 1 UID: 0 PID: 6835 Comm: syz.0.294 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  225.073901][ T6835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  225.073912][ T6835] Call Trace:
[  225.073920][ T6835]  <TASK>
[  225.073928][ T6835]  dump_stack_lvl+0x241/0x360
[  225.073959][ T6835]  ? __pfx_dump_stack_lvl+0x10/0x10
[  225.073984][ T6835]  ? __pfx__printk+0x10/0x10
[  225.074010][ T6835]  ? __pfx___might_resched+0x10/0x10
[  225.074037][ T6835]  should_fail_ex+0x424/0x570
[  225.074060][ T6835]  should_failslab+0xac/0x100
[  225.074086][ T6835]  kmem_cache_alloc_noprof+0x78/0x390
[  225.074108][ T6835]  ? __kernfs_new_node+0xdf/0x890
[  225.074131][ T6835]  __kernfs_new_node+0xdf/0x890
[  225.074148][ T6835]  ? __lock_acquire+0xad5/0xd80
[  225.074172][ T6835]  ? __pfx___kernfs_new_node+0x10/0x10
[  225.074198][ T6835]  ? kernfs_root+0x1c/0x230
[  225.074217][ T6835]  ? kernfs_root+0x1c/0x230
[  225.074237][ T6835]  kernfs_new_node+0x114/0x220
[  225.074260][ T6835]  kernfs_create_link+0xa5/0x1f0
[  225.074286][ T6835]  sysfs_do_create_link_sd+0x85/0x110
[  225.074305][ T6835]  software_node_notify+0xd9/0x1b0
[  225.074327][ T6835]  device_add+0x513/0xbf0
[  225.074348][ T6835]  ? iommufd_test+0x2efb/0x56a0
[  225.074369][ T6835]  iommufd_test+0x3350/0x56a0
[  225.074399][ T6835]  ? __pfx_iommufd_test+0x10/0x10
[  225.074429][ T6835]  ? __lock_acquire+0xad5/0xd80
[  225.074478][ T6835]  iommufd_fops_ioctl+0x4fc/0x610
[  225.074505][ T6835]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  225.074532][ T6835]  ? __fget_files+0x2a/0x420
[  225.074554][ T6835]  ? __fget_files+0x2a/0x420
[  225.074574][ T6835]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  225.074598][ T6835]  __se_sys_ioctl+0xf1/0x160
[  225.074620][ T6835]  do_syscall_64+0xf3/0x230
[  225.074642][ T6835]  ? clear_bhb_loop+0x45/0xa0
[  225.074662][ T6835]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  225.074679][ T6835] RIP: 0033:0x7f33a0d8d169
[  225.074695][ T6835] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  225.074708][ T6835] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  225.074727][ T6835] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  225.074740][ T6835] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  225.074751][ T6835] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  225.074769][ T6835] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  225.074779][ T6835] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  225.074806][ T6835]  </TASK>
[  225.075546][ T6835] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  225.351521][   T54] unregister_netdevice: waiting for batadv0 to become free. Usage count = 3
[  225.416062][ T6837] FAULT_INJECTION: forcing a failure.
[  225.416062][ T6837] name failslab, interval 1, probability 0, space 0, times 0
[  225.434033][ T6837] CPU: 1 UID: 0 PID: 6837 Comm: syz.0.295 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  225.434061][ T6837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  225.434072][ T6837] Call Trace:
[  225.434080][ T6837]  <TASK>
[  225.434089][ T6837]  dump_stack_lvl+0x241/0x360
[  225.434123][ T6837]  ? __pfx_dump_stack_lvl+0x10/0x10
[  225.434148][ T6837]  ? __pfx__printk+0x10/0x10
[  225.434176][ T6837]  ? __pfx___might_resched+0x10/0x10
[  225.434204][ T6837]  should_fail_ex+0x424/0x570
[  225.434228][ T6837]  should_failslab+0xac/0x100
[  225.434255][ T6837]  kmem_cache_alloc_noprof+0x78/0x390
[  225.434279][ T6837]  ? __kernfs_new_node+0xdf/0x890
[  225.434303][ T6837]  __kernfs_new_node+0xdf/0x890
[  225.434321][ T6837]  ? __lock_acquire+0xad5/0xd80
[  225.434348][ T6837]  ? __pfx___kernfs_new_node+0x10/0x10
[  225.434375][ T6837]  ? kernfs_root+0x1c/0x230
[  225.434395][ T6837]  ? kernfs_root+0x1c/0x230
[  225.434415][ T6837]  kernfs_new_node+0x114/0x220
[  225.434439][ T6837]  kernfs_create_link+0xa5/0x1f0
[  225.434466][ T6837]  sysfs_do_create_link_sd+0x85/0x110
[  225.434487][ T6837]  software_node_notify+0xd9/0x1b0
[  225.434510][ T6837]  device_add+0x513/0xbf0
[  225.434532][ T6837]  ? iommufd_test+0x2efb/0x56a0
[  225.434554][ T6837]  iommufd_test+0x3350/0x56a0
[  225.434585][ T6837]  ? __pfx_iommufd_test+0x10/0x10
[  225.434616][ T6837]  ? __lock_acquire+0xad5/0xd80
[  225.434666][ T6837]  iommufd_fops_ioctl+0x4fc/0x610
[  225.434694][ T6837]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  225.434722][ T6837]  ? __fget_files+0x2a/0x420
[  225.434745][ T6837]  ? __fget_files+0x2a/0x420
[  225.434773][ T6837]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  225.434799][ T6837]  __se_sys_ioctl+0xf1/0x160
[  225.434822][ T6837]  do_syscall_64+0xf3/0x230
[  225.434844][ T6837]  ? clear_bhb_loop+0x45/0xa0
[  225.434866][ T6837]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  225.434882][ T6837] RIP: 0033:0x7f33a0d8d169
[  225.434898][ T6837] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  225.434912][ T6837] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  225.434932][ T6837] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  225.434945][ T6837] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  225.434957][ T6837] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  225.434969][ T6837] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  225.434981][ T6837] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  225.435008][ T6837]  </TASK>
[  225.435748][ T6837] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  225.731796][ T6839] FAULT_INJECTION: forcing a failure.
[  225.731796][ T6839] name failslab, interval 1, probability 0, space 0, times 0
[  225.784693][ T6839] CPU: 0 UID: 0 PID: 6839 Comm: syz.0.296 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  225.784721][ T6839] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  225.784741][ T6839] Call Trace:
[  225.784749][ T6839]  <TASK>
[  225.784757][ T6839]  dump_stack_lvl+0x241/0x360
[  225.784790][ T6839]  ? __pfx_dump_stack_lvl+0x10/0x10
[  225.784814][ T6839]  ? __pfx__printk+0x10/0x10
[  225.784841][ T6839]  ? __pfx___might_resched+0x10/0x10
[  225.784867][ T6839]  should_fail_ex+0x424/0x570
[  225.784891][ T6839]  should_failslab+0xac/0x100
[  225.784917][ T6839]  kmem_cache_alloc_noprof+0x78/0x390
[  225.784940][ T6839]  ? __kernfs_new_node+0xdf/0x890
[  225.784963][ T6839]  __kernfs_new_node+0xdf/0x890
[  225.784980][ T6839]  ? __lock_acquire+0xad5/0xd80
[  225.785005][ T6839]  ? __pfx___kernfs_new_node+0x10/0x10
[  225.785032][ T6839]  ? kernfs_root+0x1c/0x230
[  225.785050][ T6839]  ? kernfs_root+0x1c/0x230
[  225.785070][ T6839]  kernfs_new_node+0x114/0x220
[  225.785093][ T6839]  kernfs_create_link+0xa5/0x1f0
[  225.785120][ T6839]  sysfs_do_create_link_sd+0x85/0x110
[  225.785140][ T6839]  software_node_notify+0xd9/0x1b0
[  225.785163][ T6839]  device_add+0x513/0xbf0
[  225.785184][ T6839]  ? iommufd_test+0x2efb/0x56a0
[  225.785205][ T6839]  iommufd_test+0x3350/0x56a0
[  225.785235][ T6839]  ? __pfx_iommufd_test+0x10/0x10
[  225.785263][ T6839]  ? __lock_acquire+0xad5/0xd80
[  225.785313][ T6839]  iommufd_fops_ioctl+0x4fc/0x610
[  225.785339][ T6839]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  225.785366][ T6839]  ? __fget_files+0x2a/0x420
[  225.785388][ T6839]  ? __fget_files+0x2a/0x420
[  225.785407][ T6839]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  225.785433][ T6839]  __se_sys_ioctl+0xf1/0x160
[  225.785455][ T6839]  do_syscall_64+0xf3/0x230
[  225.785477][ T6839]  ? clear_bhb_loop+0x45/0xa0
[  225.785498][ T6839]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  225.785514][ T6839] RIP: 0033:0x7f33a0d8d169
[  225.785530][ T6839] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  225.785544][ T6839] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  225.785564][ T6839] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  225.785576][ T6839] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  225.785588][ T6839] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  225.785598][ T6839] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  225.785609][ T6839] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  225.785636][ T6839]  </TASK>
[  225.786483][ T6839] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  226.101979][ T6841] FAULT_INJECTION: forcing a failure.
[  226.101979][ T6841] name failslab, interval 1, probability 0, space 0, times 0
[  226.114777][ T6841] CPU: 0 UID: 0 PID: 6841 Comm: syz.0.297 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  226.114800][ T6841] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  226.114812][ T6841] Call Trace:
[  226.114820][ T6841]  <TASK>
[  226.114828][ T6841]  dump_stack_lvl+0x241/0x360
[  226.114861][ T6841]  ? __pfx_dump_stack_lvl+0x10/0x10
[  226.114886][ T6841]  ? __pfx__printk+0x10/0x10
[  226.114913][ T6841]  ? __pfx___might_resched+0x10/0x10
[  226.114949][ T6841]  should_fail_ex+0x424/0x570
[  226.114974][ T6841]  should_failslab+0xac/0x100
[  226.115005][ T6841]  kmem_cache_alloc_noprof+0x78/0x390
[  226.115028][ T6841]  ? __kernfs_new_node+0xdf/0x890
[  226.115051][ T6841]  __kernfs_new_node+0xdf/0x890
[  226.115071][ T6841]  ? __lock_acquire+0xad5/0xd80
[  226.115095][ T6841]  ? __pfx___kernfs_new_node+0x10/0x10
[  226.115124][ T6841]  ? kernfs_root+0x1c/0x230
[  226.115143][ T6841]  ? kernfs_root+0x1c/0x230
[  226.115163][ T6841]  kernfs_new_node+0x114/0x220
[  226.115187][ T6841]  kernfs_create_dir_ns+0x43/0x120
[  226.115210][ T6841]  sysfs_create_dir_ns+0x1a2/0x3f0
[  226.115231][ T6841]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  226.115257][ T6841]  kobject_add_internal+0x435/0x8d0
[  226.115288][ T6841]  kobject_add+0x15b/0x230
[  226.115312][ T6841]  ? kobject_put+0x43d/0x480
[  226.115334][ T6841]  ? __pfx_kobject_add+0x10/0x10
[  226.115357][ T6841]  ? bus_get_dev_root+0x127/0x160
[  226.115378][ T6841]  ? get_device_parent+0x405/0x410
[  226.115397][ T6841]  ? device_add+0x318/0xbf0
[  226.115418][ T6841]  device_add+0x4e5/0xbf0
[  226.115440][ T6841]  ? iommufd_test+0x2efb/0x56a0
[  226.115461][ T6841]  iommufd_test+0x3350/0x56a0
[  226.115491][ T6841]  ? __pfx_iommufd_test+0x10/0x10
[  226.115514][ T6841]  ? irqentry_exit+0x63/0x90
[  226.115532][ T6841]  ? lockdep_hardirqs_on+0x9d/0x150
[  226.115567][ T6841]  ? lock_acquire+0x167/0x2f0
[  226.115605][ T6841]  iommufd_fops_ioctl+0x4fc/0x610
[  226.115631][ T6841]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  226.115658][ T6841]  ? __fget_files+0x2a/0x420
[  226.115681][ T6841]  ? __fget_files+0x2a/0x420
[  226.115700][ T6841]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  226.115725][ T6841]  __se_sys_ioctl+0xf1/0x160
[  226.115748][ T6841]  do_syscall_64+0xf3/0x230
[  226.115769][ T6841]  ? clear_bhb_loop+0x45/0xa0
[  226.115790][ T6841]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  226.115807][ T6841] RIP: 0033:0x7f33a0d8d169
[  226.115823][ T6841] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  226.115837][ T6841] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  226.115855][ T6841] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  226.115868][ T6841] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  226.115880][ T6841] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  226.115891][ T6841] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  226.115901][ T6841] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  226.115929][ T6841]  </TASK>
[  226.115965][ T6841] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  226.520408][ T6843] FAULT_INJECTION: forcing a failure.
[  226.520408][ T6843] name failslab, interval 1, probability 0, space 0, times 0
[  226.533251][ T6843] CPU: 0 UID: 0 PID: 6843 Comm: syz.0.298 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  226.533276][ T6843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  226.533288][ T6843] Call Trace:
[  226.533295][ T6843]  <TASK>
[  226.533303][ T6843]  dump_stack_lvl+0x241/0x360
[  226.533336][ T6843]  ? __pfx_dump_stack_lvl+0x10/0x10
[  226.533360][ T6843]  ? __pfx__printk+0x10/0x10
[  226.533388][ T6843]  ? __pfx___might_resched+0x10/0x10
[  226.533415][ T6843]  should_fail_ex+0x424/0x570
[  226.533439][ T6843]  should_failslab+0xac/0x100
[  226.533464][ T6843]  kmem_cache_alloc_noprof+0x78/0x390
[  226.533488][ T6843]  ? __kernfs_new_node+0xdf/0x890
[  226.533511][ T6843]  __kernfs_new_node+0xdf/0x890
[  226.533529][ T6843]  ? __lock_acquire+0xad5/0xd80
[  226.533553][ T6843]  ? __pfx___kernfs_new_node+0x10/0x10
[  226.533579][ T6843]  ? kernfs_root+0x1c/0x230
[  226.533597][ T6843]  ? kernfs_root+0x1c/0x230
[  226.533617][ T6843]  kernfs_new_node+0x114/0x220
[  226.533640][ T6843]  kernfs_create_link+0xa5/0x1f0
[  226.533666][ T6843]  sysfs_do_create_link_sd+0x85/0x110
[  226.533687][ T6843]  software_node_notify+0xd9/0x1b0
[  226.533709][ T6843]  device_add+0x513/0xbf0
[  226.533730][ T6843]  ? iommufd_test+0x2efb/0x56a0
[  226.533752][ T6843]  iommufd_test+0x3350/0x56a0
[  226.533783][ T6843]  ? __pfx_iommufd_test+0x10/0x10
[  226.533813][ T6843]  ? __lock_acquire+0xad5/0xd80
[  226.533863][ T6843]  iommufd_fops_ioctl+0x4fc/0x610
[  226.533890][ T6843]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  226.533927][ T6843]  ? __fget_files+0x2a/0x420
[  226.533949][ T6843]  ? __fget_files+0x2a/0x420
[  226.533969][ T6843]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  226.533995][ T6843]  __se_sys_ioctl+0xf1/0x160
[  226.534018][ T6843]  do_syscall_64+0xf3/0x230
[  226.534040][ T6843]  ? clear_bhb_loop+0x45/0xa0
[  226.534061][ T6843]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  226.534077][ T6843] RIP: 0033:0x7f33a0d8d169
[  226.534093][ T6843] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  226.534107][ T6843] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  226.534125][ T6843] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  226.534138][ T6843] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  226.534150][ T6843] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  226.534161][ T6843] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  226.534171][ T6843] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  226.534199][ T6843]  </TASK>
[  226.534946][ T6843] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  226.887444][ T6845] FAULT_INJECTION: forcing a failure.
[  226.887444][ T6845] name failslab, interval 1, probability 0, space 0, times 0
[  226.900242][ T6845] CPU: 0 UID: 0 PID: 6845 Comm: syz.0.299 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  226.900268][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  226.900279][ T6845] Call Trace:
[  226.900287][ T6845]  <TASK>
[  226.900295][ T6845]  dump_stack_lvl+0x241/0x360
[  226.900328][ T6845]  ? __pfx_dump_stack_lvl+0x10/0x10
[  226.900352][ T6845]  ? __pfx__printk+0x10/0x10
[  226.900380][ T6845]  ? __pfx___might_resched+0x10/0x10
[  226.900407][ T6845]  should_fail_ex+0x424/0x570
[  226.900431][ T6845]  should_failslab+0xac/0x100
[  226.900457][ T6845]  kmem_cache_alloc_noprof+0x78/0x390
[  226.900480][ T6845]  ? __kernfs_new_node+0xdf/0x890
[  226.900502][ T6845]  __kernfs_new_node+0xdf/0x890
[  226.900520][ T6845]  ? __lock_acquire+0xad5/0xd80
[  226.900545][ T6845]  ? __pfx___kernfs_new_node+0x10/0x10
[  226.900572][ T6845]  ? kernfs_root+0x1c/0x230
[  226.900591][ T6845]  ? kernfs_root+0x1c/0x230
[  226.900610][ T6845]  kernfs_new_node+0x114/0x220
[  226.900634][ T6845]  kernfs_create_link+0xa5/0x1f0
[  226.900660][ T6845]  sysfs_do_create_link_sd+0x85/0x110
[  226.900681][ T6845]  software_node_notify+0xd9/0x1b0
[  226.900703][ T6845]  device_add+0x513/0xbf0
[  226.900725][ T6845]  ? iommufd_test+0x2efb/0x56a0
[  226.900746][ T6845]  iommufd_test+0x3350/0x56a0
[  226.900776][ T6845]  ? __pfx_iommufd_test+0x10/0x10
[  226.900813][ T6845]  ? __lock_acquire+0xad5/0xd80
[  226.900862][ T6845]  iommufd_fops_ioctl+0x4fc/0x610
[  226.900890][ T6845]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  226.900917][ T6845]  ? __fget_files+0x2a/0x420
[  226.900939][ T6845]  ? __fget_files+0x2a/0x420
[  226.900958][ T6845]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  226.900983][ T6845]  __se_sys_ioctl+0xf1/0x160
[  226.901007][ T6845]  do_syscall_64+0xf3/0x230
[  226.901029][ T6845]  ? clear_bhb_loop+0x45/0xa0
[  226.901050][ T6845]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  226.901067][ T6845] RIP: 0033:0x7f33a0d8d169
[  226.901083][ T6845] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  226.901096][ T6845] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  226.901114][ T6845] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  226.901127][ T6845] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  226.901139][ T6845] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  226.901149][ T6845] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  226.901160][ T6845] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  226.901188][ T6845]  </TASK>
[  227.168739][ T6845] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  227.215229][ T6847] FAULT_INJECTION: forcing a failure.
[  227.215229][ T6847] name failslab, interval 1, probability 0, space 0, times 0
[  227.228210][ T6847] CPU: 1 UID: 0 PID: 6847 Comm: syz.0.300 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  227.228235][ T6847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  227.228247][ T6847] Call Trace:
[  227.228254][ T6847]  <TASK>
[  227.228262][ T6847]  dump_stack_lvl+0x241/0x360
[  227.228293][ T6847]  ? __pfx_dump_stack_lvl+0x10/0x10
[  227.228317][ T6847]  ? __pfx__printk+0x10/0x10
[  227.228345][ T6847]  ? __pfx___might_resched+0x10/0x10
[  227.228371][ T6847]  should_fail_ex+0x424/0x570
[  227.228395][ T6847]  should_failslab+0xac/0x100
[  227.228420][ T6847]  kmem_cache_alloc_noprof+0x78/0x390
[  227.228443][ T6847]  ? __kernfs_new_node+0xdf/0x890
[  227.228467][ T6847]  __kernfs_new_node+0xdf/0x890
[  227.228486][ T6847]  ? __lock_acquire+0xad5/0xd80
[  227.228508][ T6847]  ? __pfx___kernfs_new_node+0x10/0x10
[  227.228537][ T6847]  ? kernfs_root+0x1c/0x230
[  227.228556][ T6847]  ? kernfs_root+0x1c/0x230
[  227.228585][ T6847]  kernfs_new_node+0x114/0x220
[  227.228609][ T6847]  kernfs_create_dir_ns+0x43/0x120
[  227.228631][ T6847]  sysfs_create_dir_ns+0x1a2/0x3f0
[  227.228652][ T6847]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  227.228678][ T6847]  kobject_add_internal+0x435/0x8d0
[  227.228708][ T6847]  kobject_add+0x15b/0x230
[  227.228730][ T6847]  ? kobject_put+0x43d/0x480
[  227.228751][ T6847]  ? __pfx_kobject_add+0x10/0x10
[  227.228774][ T6847]  ? bus_get_dev_root+0x127/0x160
[  227.228796][ T6847]  ? get_device_parent+0x405/0x410
[  227.228813][ T6847]  ? device_add+0x318/0xbf0
[  227.228835][ T6847]  device_add+0x4e5/0xbf0
[  227.228855][ T6847]  ? iommufd_test+0x2efb/0x56a0
[  227.228877][ T6847]  iommufd_test+0x3350/0x56a0
[  227.228907][ T6847]  ? __pfx_iommufd_test+0x10/0x10
[  227.228936][ T6847]  ? __lock_acquire+0xad5/0xd80
[  227.228986][ T6847]  iommufd_fops_ioctl+0x4fc/0x610
[  227.229012][ T6847]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  227.229039][ T6847]  ? __fget_files+0x2a/0x420
[  227.229061][ T6847]  ? __fget_files+0x2a/0x420
[  227.229081][ T6847]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  227.229105][ T6847]  __se_sys_ioctl+0xf1/0x160
[  227.229127][ T6847]  do_syscall_64+0xf3/0x230
[  227.229147][ T6847]  ? clear_bhb_loop+0x45/0xa0
[  227.229168][ T6847]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  227.229183][ T6847] RIP: 0033:0x7f33a0d8d169
[  227.229199][ T6847] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  227.229213][ T6847] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  227.229231][ T6847] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  227.229244][ T6847] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  227.229255][ T6847] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  227.229266][ T6847] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  227.229276][ T6847] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  227.229304][ T6847]  </TASK>
[  227.229330][ T6847] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  227.627849][ T6849] FAULT_INJECTION: forcing a failure.
[  227.627849][ T6849] name failslab, interval 1, probability 0, space 0, times 0
[  227.648760][ T6849] CPU: 1 UID: 0 PID: 6849 Comm: syz.0.301 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  227.648786][ T6849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  227.648798][ T6849] Call Trace:
[  227.648806][ T6849]  <TASK>
[  227.648813][ T6849]  dump_stack_lvl+0x241/0x360
[  227.648844][ T6849]  ? __pfx_dump_stack_lvl+0x10/0x10
[  227.648868][ T6849]  ? __pfx__printk+0x10/0x10
[  227.648895][ T6849]  ? __pfx___might_resched+0x10/0x10
[  227.648921][ T6849]  should_fail_ex+0x424/0x570
[  227.648943][ T6849]  should_failslab+0xac/0x100
[  227.648969][ T6849]  kmem_cache_alloc_noprof+0x78/0x390
[  227.648992][ T6849]  ? __kernfs_new_node+0xdf/0x890
[  227.649013][ T6849]  __kernfs_new_node+0xdf/0x890
[  227.649029][ T6849]  ? __lock_acquire+0xad5/0xd80
[  227.649055][ T6849]  ? __pfx___kernfs_new_node+0x10/0x10
[  227.649080][ T6849]  ? kernfs_root+0x1c/0x230
[  227.649098][ T6849]  ? kernfs_root+0x1c/0x230
[  227.649116][ T6849]  kernfs_new_node+0x114/0x220
[  227.649137][ T6849]  kernfs_create_link+0xa5/0x1f0
[  227.649163][ T6849]  sysfs_do_create_link_sd+0x85/0x110
[  227.649183][ T6849]  software_node_notify+0xd9/0x1b0
[  227.649205][ T6849]  device_add+0x513/0xbf0
[  227.649227][ T6849]  ? iommufd_test+0x2efb/0x56a0
[  227.649248][ T6849]  iommufd_test+0x3350/0x56a0
[  227.649277][ T6849]  ? __pfx_iommufd_test+0x10/0x10
[  227.649304][ T6849]  ? __lock_acquire+0xad5/0xd80
[  227.649354][ T6849]  iommufd_fops_ioctl+0x4fc/0x610
[  227.649381][ T6849]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  227.649409][ T6849]  ? __fget_files+0x2a/0x420
[  227.649430][ T6849]  ? __fget_files+0x2a/0x420
[  227.649450][ T6849]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  227.649473][ T6849]  __se_sys_ioctl+0xf1/0x160
[  227.649496][ T6849]  do_syscall_64+0xf3/0x230
[  227.649526][ T6849]  ? clear_bhb_loop+0x45/0xa0
[  227.649547][ T6849]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  227.649563][ T6849] RIP: 0033:0x7f33a0d8d169
[  227.649578][ T6849] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  227.649592][ T6849] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  227.649611][ T6849] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  227.649623][ T6849] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  227.649635][ T6849] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  227.649645][ T6849] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  227.649656][ T6849] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  227.649684][ T6849]  </TASK>
[  227.650434][ T6849] iommufd_mock iommufd_mock0: Adding to iommu group 0
2025/04/10 11:57:21 executed programs: 288
[  227.992836][ T6851] FAULT_INJECTION: forcing a failure.
[  227.992836][ T6851] name failslab, interval 1, probability 0, space 0, times 0
[  228.005620][ T6851] CPU: 1 UID: 0 PID: 6851 Comm: syz.0.302 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  228.005645][ T6851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  228.005655][ T6851] Call Trace:
[  228.005663][ T6851]  <TASK>
[  228.005671][ T6851]  dump_stack_lvl+0x241/0x360
[  228.005703][ T6851]  ? __pfx_dump_stack_lvl+0x10/0x10
[  228.005726][ T6851]  ? __pfx__printk+0x10/0x10
[  228.005760][ T6851]  ? __pfx___might_resched+0x10/0x10
[  228.005786][ T6851]  should_fail_ex+0x424/0x570
[  228.005809][ T6851]  should_failslab+0xac/0x100
[  228.005835][ T6851]  kmem_cache_alloc_noprof+0x78/0x390
[  228.005858][ T6851]  ? __kernfs_new_node+0xdf/0x890
[  228.005881][ T6851]  __kernfs_new_node+0xdf/0x890
[  228.005901][ T6851]  ? __lock_acquire+0xad5/0xd80
[  228.005924][ T6851]  ? __pfx___kernfs_new_node+0x10/0x10
[  228.005953][ T6851]  ? kernfs_root+0x1c/0x230
[  228.005971][ T6851]  ? kernfs_root+0x1c/0x230
[  228.005991][ T6851]  kernfs_new_node+0x114/0x220
[  228.006014][ T6851]  kernfs_create_dir_ns+0x43/0x120
[  228.006037][ T6851]  sysfs_create_dir_ns+0x1a2/0x3f0
[  228.006058][ T6851]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  228.006083][ T6851]  kobject_add_internal+0x435/0x8d0
[  228.006114][ T6851]  kobject_add+0x15b/0x230
[  228.006138][ T6851]  ? kobject_put+0x43d/0x480
[  228.006159][ T6851]  ? __pfx_kobject_add+0x10/0x10
[  228.006182][ T6851]  ? bus_get_dev_root+0x127/0x160
[  228.006204][ T6851]  ? get_device_parent+0x405/0x410
[  228.006222][ T6851]  ? device_add+0x318/0xbf0
[  228.006243][ T6851]  device_add+0x4e5/0xbf0
[  228.006264][ T6851]  ? iommufd_test+0x2efb/0x56a0
[  228.006285][ T6851]  iommufd_test+0x3350/0x56a0
[  228.006316][ T6851]  ? __pfx_iommufd_test+0x10/0x10
[  228.006345][ T6851]  ? __lock_acquire+0xad5/0xd80
[  228.006395][ T6851]  iommufd_fops_ioctl+0x4fc/0x610
[  228.006421][ T6851]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  228.006449][ T6851]  ? __fget_files+0x2a/0x420
[  228.006471][ T6851]  ? __fget_files+0x2a/0x420
[  228.006491][ T6851]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  228.006516][ T6851]  __se_sys_ioctl+0xf1/0x160
[  228.006545][ T6851]  do_syscall_64+0xf3/0x230
[  228.006566][ T6851]  ? clear_bhb_loop+0x45/0xa0
[  228.006587][ T6851]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  228.006604][ T6851] RIP: 0033:0x7f33a0d8d169
[  228.006620][ T6851] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  228.006633][ T6851] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  228.006651][ T6851] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  228.006664][ T6851] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  228.006675][ T6851] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  228.006685][ T6851] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  228.006696][ T6851] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  228.006723][ T6851]  </TASK>
[  228.006750][ T6851] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  228.342999][ T6853] FAULT_INJECTION: forcing a failure.
[  228.342999][ T6853] name failslab, interval 1, probability 0, space 0, times 0
[  228.391872][ T6853] CPU: 0 UID: 0 PID: 6853 Comm: syz.0.303 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  228.391900][ T6853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  228.391916][ T6853] Call Trace:
[  228.391924][ T6853]  <TASK>
[  228.391932][ T6853]  dump_stack_lvl+0x241/0x360
[  228.391964][ T6853]  ? __pfx_dump_stack_lvl+0x10/0x10
[  228.391989][ T6853]  ? __pfx__printk+0x10/0x10
[  228.392015][ T6853]  ? __pfx___might_resched+0x10/0x10
[  228.392042][ T6853]  should_fail_ex+0x424/0x570
[  228.392066][ T6853]  should_failslab+0xac/0x100
[  228.392091][ T6853]  kmem_cache_alloc_noprof+0x78/0x390
[  228.392114][ T6853]  ? __kernfs_new_node+0xdf/0x890
[  228.392137][ T6853]  __kernfs_new_node+0xdf/0x890
[  228.392154][ T6853]  ? __lock_acquire+0xad5/0xd80
[  228.392179][ T6853]  ? __pfx___kernfs_new_node+0x10/0x10
[  228.392207][ T6853]  ? kernfs_root+0x1c/0x230
[  228.392225][ T6853]  ? kernfs_root+0x1c/0x230
[  228.392245][ T6853]  kernfs_new_node+0x114/0x220
[  228.392268][ T6853]  kernfs_create_link+0xa5/0x1f0
[  228.392294][ T6853]  sysfs_do_create_link_sd+0x85/0x110
[  228.392314][ T6853]  software_node_notify+0xd9/0x1b0
[  228.392336][ T6853]  device_add+0x513/0xbf0
[  228.392358][ T6853]  ? iommufd_test+0x2efb/0x56a0
[  228.392379][ T6853]  iommufd_test+0x3350/0x56a0
[  228.392409][ T6853]  ? __pfx_iommufd_test+0x10/0x10
[  228.392438][ T6853]  ? __lock_acquire+0xad5/0xd80
[  228.392496][ T6853]  iommufd_fops_ioctl+0x4fc/0x610
[  228.392523][ T6853]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  228.392550][ T6853]  ? __fget_files+0x2a/0x420
[  228.392571][ T6853]  ? __fget_files+0x2a/0x420
[  228.392592][ T6853]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  228.392617][ T6853]  __se_sys_ioctl+0xf1/0x160
[  228.392639][ T6853]  do_syscall_64+0xf3/0x230
[  228.392661][ T6853]  ? clear_bhb_loop+0x45/0xa0
[  228.392683][ T6853]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  228.392699][ T6853] RIP: 0033:0x7f33a0d8d169
[  228.392714][ T6853] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  228.392727][ T6853] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  228.392747][ T6853] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  228.392760][ T6853] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  228.392771][ T6853] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  228.392782][ T6853] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  228.392792][ T6853] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  228.392824][ T6853]  </TASK>
[  228.393596][ T6853] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  228.700085][ T6855] FAULT_INJECTION: forcing a failure.
[  228.700085][ T6855] name failslab, interval 1, probability 0, space 0, times 0
[  228.715629][ T6855] CPU: 1 UID: 0 PID: 6855 Comm: syz.0.304 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  228.715654][ T6855] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  228.715666][ T6855] Call Trace:
[  228.715673][ T6855]  <TASK>
[  228.715682][ T6855]  dump_stack_lvl+0x241/0x360
[  228.715714][ T6855]  ? __pfx_dump_stack_lvl+0x10/0x10
[  228.715738][ T6855]  ? __pfx__printk+0x10/0x10
[  228.715766][ T6855]  ? __pfx___might_resched+0x10/0x10
[  228.715791][ T6855]  should_fail_ex+0x424/0x570
[  228.715815][ T6855]  should_failslab+0xac/0x100
[  228.715841][ T6855]  kmem_cache_alloc_noprof+0x78/0x390
[  228.715863][ T6855]  ? __kernfs_new_node+0xdf/0x890
[  228.715887][ T6855]  __kernfs_new_node+0xdf/0x890
[  228.715904][ T6855]  ? __lock_acquire+0xad5/0xd80
[  228.715928][ T6855]  ? __pfx___kernfs_new_node+0x10/0x10
[  228.715956][ T6855]  ? kernfs_root+0x1c/0x230
[  228.715975][ T6855]  ? kernfs_root+0x1c/0x230
[  228.715994][ T6855]  kernfs_new_node+0x114/0x220
[  228.716018][ T6855]  kernfs_create_link+0xa5/0x1f0
[  228.716044][ T6855]  sysfs_do_create_link_sd+0x85/0x110
[  228.716064][ T6855]  software_node_notify+0xd9/0x1b0
[  228.716086][ T6855]  device_add+0x513/0xbf0
[  228.716108][ T6855]  ? iommufd_test+0x2efb/0x56a0
[  228.716128][ T6855]  iommufd_test+0x3350/0x56a0
[  228.716158][ T6855]  ? __pfx_iommufd_test+0x10/0x10
[  228.716187][ T6855]  ? __lock_acquire+0xad5/0xd80
[  228.716237][ T6855]  iommufd_fops_ioctl+0x4fc/0x610
[  228.716264][ T6855]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  228.716291][ T6855]  ? __fget_files+0x2a/0x420
[  228.716313][ T6855]  ? __fget_files+0x2a/0x420
[  228.716332][ T6855]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  228.716358][ T6855]  __se_sys_ioctl+0xf1/0x160
[  228.716406][ T6855]  do_syscall_64+0xf3/0x230
[  228.716427][ T6855]  ? clear_bhb_loop+0x45/0xa0
[  228.716448][ T6855]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  228.716465][ T6855] RIP: 0033:0x7f33a0d8d169
[  228.716481][ T6855] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  228.716494][ T6855] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  228.716513][ T6855] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  228.716526][ T6855] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  228.716537][ T6855] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  228.716548][ T6855] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  228.716558][ T6855] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  228.716586][ T6855]  </TASK>
[  228.717328][ T6855] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  229.063342][ T6857] FAULT_INJECTION: forcing a failure.
[  229.063342][ T6857] name failslab, interval 1, probability 0, space 0, times 0
[  229.085328][ T6857] CPU: 1 UID: 0 PID: 6857 Comm: syz.0.305 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  229.085356][ T6857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  229.085367][ T6857] Call Trace:
[  229.085375][ T6857]  <TASK>
[  229.085383][ T6857]  dump_stack_lvl+0x241/0x360
[  229.085415][ T6857]  ? __pfx_dump_stack_lvl+0x10/0x10
[  229.085439][ T6857]  ? __pfx__printk+0x10/0x10
[  229.085467][ T6857]  ? __pfx___might_resched+0x10/0x10
[  229.085490][ T6857]  should_fail_ex+0x424/0x570
[  229.085512][ T6857]  should_failslab+0xac/0x100
[  229.085537][ T6857]  kmem_cache_alloc_noprof+0x78/0x390
[  229.085560][ T6857]  ? __kernfs_new_node+0xdf/0x890
[  229.085583][ T6857]  __kernfs_new_node+0xdf/0x890
[  229.085601][ T6857]  ? __lock_acquire+0xad5/0xd80
[  229.085634][ T6857]  ? __pfx___kernfs_new_node+0x10/0x10
[  229.085661][ T6857]  ? kernfs_root+0x1c/0x230
[  229.085680][ T6857]  ? kernfs_root+0x1c/0x230
[  229.085699][ T6857]  kernfs_new_node+0x114/0x220
[  229.085722][ T6857]  kernfs_create_link+0xa5/0x1f0
[  229.085749][ T6857]  sysfs_do_create_link_sd+0x85/0x110
[  229.085769][ T6857]  software_node_notify+0xd9/0x1b0
[  229.085791][ T6857]  device_add+0x513/0xbf0
[  229.085813][ T6857]  ? iommufd_test+0x2efb/0x56a0
[  229.085834][ T6857]  iommufd_test+0x3350/0x56a0
[  229.085864][ T6857]  ? __pfx_iommufd_test+0x10/0x10
[  229.085894][ T6857]  ? __lock_acquire+0xad5/0xd80
[  229.085944][ T6857]  iommufd_fops_ioctl+0x4fc/0x610
[  229.085970][ T6857]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  229.085998][ T6857]  ? __fget_files+0x2a/0x420
[  229.086020][ T6857]  ? __fget_files+0x2a/0x420
[  229.086040][ T6857]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  229.086066][ T6857]  __se_sys_ioctl+0xf1/0x160
[  229.086089][ T6857]  do_syscall_64+0xf3/0x230
[  229.086111][ T6857]  ? clear_bhb_loop+0x45/0xa0
[  229.086131][ T6857]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  229.086148][ T6857] RIP: 0033:0x7f33a0d8d169
[  229.086165][ T6857] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  229.086179][ T6857] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.086198][ T6857] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  229.086211][ T6857] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  229.086222][ T6857] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  229.086233][ T6857] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  229.086244][ T6857] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  229.086271][ T6857]  </TASK>
[  229.087098][ T6857] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  229.406204][ T6859] FAULT_INJECTION: forcing a failure.
[  229.406204][ T6859] name failslab, interval 1, probability 0, space 0, times 0
[  229.429937][ T6859] CPU: 0 UID: 0 PID: 6859 Comm: syz.0.306 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  229.429966][ T6859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  229.429977][ T6859] Call Trace:
[  229.429984][ T6859]  <TASK>
[  229.429992][ T6859]  dump_stack_lvl+0x241/0x360
[  229.430024][ T6859]  ? __pfx_dump_stack_lvl+0x10/0x10
[  229.430048][ T6859]  ? __pfx__printk+0x10/0x10
[  229.430075][ T6859]  ? __pfx___might_resched+0x10/0x10
[  229.430101][ T6859]  should_fail_ex+0x424/0x570
[  229.430124][ T6859]  should_failslab+0xac/0x100
[  229.430151][ T6859]  kmem_cache_alloc_noprof+0x78/0x390
[  229.430174][ T6859]  ? __kernfs_new_node+0xdf/0x890
[  229.430196][ T6859]  __kernfs_new_node+0xdf/0x890
[  229.430214][ T6859]  ? __lock_acquire+0xad5/0xd80
[  229.430234][ T6859]  ? __pfx___kernfs_new_node+0x10/0x10
[  229.430262][ T6859]  ? kernfs_root+0x1c/0x230
[  229.430281][ T6859]  ? kernfs_root+0x1c/0x230
[  229.430309][ T6859]  kernfs_new_node+0x114/0x220
[  229.430333][ T6859]  kernfs_create_dir_ns+0x43/0x120
[  229.430356][ T6859]  sysfs_create_dir_ns+0x1a2/0x3f0
[  229.430378][ T6859]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  229.430405][ T6859]  kobject_add_internal+0x435/0x8d0
[  229.430437][ T6859]  kobject_add+0x15b/0x230
[  229.430460][ T6859]  ? kobject_put+0x43d/0x480
[  229.430481][ T6859]  ? __pfx_kobject_add+0x10/0x10
[  229.430504][ T6859]  ? bus_get_dev_root+0x127/0x160
[  229.430526][ T6859]  ? get_device_parent+0x405/0x410
[  229.430544][ T6859]  ? device_add+0x318/0xbf0
[  229.430565][ T6859]  device_add+0x4e5/0xbf0
[  229.430586][ T6859]  ? iommufd_test+0x2efb/0x56a0
[  229.430607][ T6859]  iommufd_test+0x3350/0x56a0
[  229.430637][ T6859]  ? __pfx_iommufd_test+0x10/0x10
[  229.430667][ T6859]  ? __lock_acquire+0xad5/0xd80
[  229.430722][ T6859]  iommufd_fops_ioctl+0x4fc/0x610
[  229.430749][ T6859]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  229.430776][ T6859]  ? __fget_files+0x2a/0x420
[  229.430798][ T6859]  ? __fget_files+0x2a/0x420
[  229.430818][ T6859]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  229.430843][ T6859]  __se_sys_ioctl+0xf1/0x160
[  229.430866][ T6859]  do_syscall_64+0xf3/0x230
[  229.430887][ T6859]  ? clear_bhb_loop+0x45/0xa0
[  229.430907][ T6859]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  229.430923][ T6859] RIP: 0033:0x7f33a0d8d169
[  229.430939][ T6859] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  229.430953][ T6859] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.430972][ T6859] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  229.430985][ T6859] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  229.430996][ T6859] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  229.431007][ T6859] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  229.431017][ T6859] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  229.431045][ T6859]  </TASK>
[  229.431071][ T6859] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  229.769966][ T6861] FAULT_INJECTION: forcing a failure.
[  229.769966][ T6861] name failslab, interval 1, probability 0, space 0, times 0
[  229.829599][ T6861] CPU: 1 UID: 0 PID: 6861 Comm: syz.0.307 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  229.829627][ T6861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  229.829638][ T6861] Call Trace:
[  229.829646][ T6861]  <TASK>
[  229.829654][ T6861]  dump_stack_lvl+0x241/0x360
[  229.829687][ T6861]  ? __pfx_dump_stack_lvl+0x10/0x10
[  229.829712][ T6861]  ? __pfx__printk+0x10/0x10
[  229.829739][ T6861]  ? __pfx___might_resched+0x10/0x10
[  229.829766][ T6861]  should_fail_ex+0x424/0x570
[  229.829788][ T6861]  should_failslab+0xac/0x100
[  229.829814][ T6861]  kmem_cache_alloc_noprof+0x78/0x390
[  229.829837][ T6861]  ? __kernfs_new_node+0xdf/0x890
[  229.829861][ T6861]  __kernfs_new_node+0xdf/0x890
[  229.829878][ T6861]  ? __lock_acquire+0xad5/0xd80
[  229.829904][ T6861]  ? __pfx___kernfs_new_node+0x10/0x10
[  229.829931][ T6861]  ? kernfs_root+0x1c/0x230
[  229.829948][ T6861]  ? kernfs_root+0x1c/0x230
[  229.829968][ T6861]  kernfs_new_node+0x114/0x220
[  229.829991][ T6861]  kernfs_create_link+0xa5/0x1f0
[  229.830018][ T6861]  sysfs_do_create_link_sd+0x85/0x110
[  229.830038][ T6861]  software_node_notify+0xd9/0x1b0
[  229.830060][ T6861]  device_add+0x513/0xbf0
[  229.830081][ T6861]  ? iommufd_test+0x2efb/0x56a0
[  229.830102][ T6861]  iommufd_test+0x3350/0x56a0
[  229.830132][ T6861]  ? __pfx_iommufd_test+0x10/0x10
[  229.830162][ T6861]  ? __lock_acquire+0xad5/0xd80
[  229.830212][ T6861]  iommufd_fops_ioctl+0x4fc/0x610
[  229.830238][ T6861]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  229.830273][ T6861]  ? __fget_files+0x2a/0x420
[  229.830294][ T6861]  ? __fget_files+0x2a/0x420
[  229.830315][ T6861]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  229.830340][ T6861]  __se_sys_ioctl+0xf1/0x160
[  229.830362][ T6861]  do_syscall_64+0xf3/0x230
[  229.830384][ T6861]  ? clear_bhb_loop+0x45/0xa0
[  229.830405][ T6861]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  229.830421][ T6861] RIP: 0033:0x7f33a0d8d169
[  229.830437][ T6861] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  229.830451][ T6861] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.830470][ T6861] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  229.830483][ T6861] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  229.830494][ T6861] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  229.830505][ T6861] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  229.830515][ T6861] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  229.830542][ T6861]  </TASK>
[  229.831286][ T6861] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  230.168725][ T6863] FAULT_INJECTION: forcing a failure.
[  230.168725][ T6863] name failslab, interval 1, probability 0, space 0, times 0
[  230.185678][ T6863] CPU: 0 UID: 0 PID: 6863 Comm: syz.0.308 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  230.185705][ T6863] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  230.185716][ T6863] Call Trace:
[  230.185724][ T6863]  <TASK>
[  230.185731][ T6863]  dump_stack_lvl+0x241/0x360
[  230.185764][ T6863]  ? __pfx_dump_stack_lvl+0x10/0x10
[  230.185788][ T6863]  ? __pfx__printk+0x10/0x10
[  230.185817][ T6863]  ? __pfx___might_resched+0x10/0x10
[  230.185843][ T6863]  should_fail_ex+0x424/0x570
[  230.185867][ T6863]  should_failslab+0xac/0x100
[  230.185893][ T6863]  kmem_cache_alloc_noprof+0x78/0x390
[  230.185916][ T6863]  ? __kernfs_new_node+0xdf/0x890
[  230.185938][ T6863]  __kernfs_new_node+0xdf/0x890
[  230.185956][ T6863]  ? __lock_acquire+0xad5/0xd80
[  230.185981][ T6863]  ? __pfx___kernfs_new_node+0x10/0x10
[  230.186008][ T6863]  ? kernfs_root+0x1c/0x230
[  230.186027][ T6863]  ? kernfs_root+0x1c/0x230
[  230.186046][ T6863]  kernfs_new_node+0x114/0x220
[  230.186069][ T6863]  kernfs_create_link+0xa5/0x1f0
[  230.186096][ T6863]  sysfs_do_create_link_sd+0x85/0x110
[  230.186116][ T6863]  software_node_notify+0xd9/0x1b0
[  230.186137][ T6863]  device_add+0x513/0xbf0
[  230.186158][ T6863]  ? iommufd_test+0x2efb/0x56a0
[  230.186180][ T6863]  iommufd_test+0x3350/0x56a0
[  230.186209][ T6863]  ? __pfx_iommufd_test+0x10/0x10
[  230.186239][ T6863]  ? __lock_acquire+0xad5/0xd80
[  230.186295][ T6863]  iommufd_fops_ioctl+0x4fc/0x610
[  230.186322][ T6863]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  230.186349][ T6863]  ? __fget_files+0x2a/0x420
[  230.186372][ T6863]  ? __fget_files+0x2a/0x420
[  230.186391][ T6863]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  230.186416][ T6863]  __se_sys_ioctl+0xf1/0x160
[  230.186439][ T6863]  do_syscall_64+0xf3/0x230
[  230.186460][ T6863]  ? clear_bhb_loop+0x45/0xa0
[  230.186482][ T6863]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  230.186499][ T6863] RIP: 0033:0x7f33a0d8d169
[  230.186515][ T6863] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  230.186530][ T6863] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  230.186548][ T6863] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  230.186560][ T6863] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  230.186572][ T6863] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  230.186583][ T6863] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  230.186593][ T6863] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  230.186620][ T6863]  </TASK>
[  230.187368][ T6863] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  230.490941][ T6865] FAULT_INJECTION: forcing a failure.
[  230.490941][ T6865] name failslab, interval 1, probability 0, space 0, times 0
[  230.506685][ T6865] CPU: 1 UID: 0 PID: 6865 Comm: syz.0.309 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  230.506710][ T6865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  230.506721][ T6865] Call Trace:
[  230.506729][ T6865]  <TASK>
[  230.506736][ T6865]  dump_stack_lvl+0x241/0x360
[  230.506768][ T6865]  ? __pfx_dump_stack_lvl+0x10/0x10
[  230.506792][ T6865]  ? __pfx__printk+0x10/0x10
[  230.506820][ T6865]  ? __pfx___might_resched+0x10/0x10
[  230.506846][ T6865]  should_fail_ex+0x424/0x570
[  230.506869][ T6865]  should_failslab+0xac/0x100
[  230.506895][ T6865]  kmem_cache_alloc_noprof+0x78/0x390
[  230.506918][ T6865]  ? __kernfs_new_node+0xdf/0x890
[  230.506940][ T6865]  __kernfs_new_node+0xdf/0x890
[  230.506957][ T6865]  ? __lock_acquire+0xad5/0xd80
[  230.506983][ T6865]  ? __pfx___kernfs_new_node+0x10/0x10
[  230.507009][ T6865]  ? kernfs_root+0x1c/0x230
[  230.507028][ T6865]  ? kernfs_root+0x1c/0x230
[  230.507048][ T6865]  kernfs_new_node+0x114/0x220
[  230.507072][ T6865]  kernfs_create_link+0xa5/0x1f0
[  230.507098][ T6865]  sysfs_do_create_link_sd+0x85/0x110
[  230.507117][ T6865]  software_node_notify+0xd9/0x1b0
[  230.507139][ T6865]  device_add+0x513/0xbf0
[  230.507161][ T6865]  ? iommufd_test+0x2efb/0x56a0
[  230.507182][ T6865]  iommufd_test+0x3350/0x56a0
[  230.507220][ T6865]  ? __pfx_iommufd_test+0x10/0x10
[  230.507250][ T6865]  ? __lock_acquire+0xad5/0xd80
[  230.507300][ T6865]  iommufd_fops_ioctl+0x4fc/0x610
[  230.507327][ T6865]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  230.507354][ T6865]  ? __fget_files+0x2a/0x420
[  230.507376][ T6865]  ? __fget_files+0x2a/0x420
[  230.507397][ T6865]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  230.507421][ T6865]  __se_sys_ioctl+0xf1/0x160
[  230.507443][ T6865]  do_syscall_64+0xf3/0x230
[  230.507465][ T6865]  ? clear_bhb_loop+0x45/0xa0
[  230.507486][ T6865]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  230.507502][ T6865] RIP: 0033:0x7f33a0d8d169
[  230.507518][ T6865] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  230.507533][ T6865] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  230.507553][ T6865] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  230.507565][ T6865] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  230.507577][ T6865] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  230.507588][ T6865] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  230.507598][ T6865] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  230.507626][ T6865]  </TASK>
[  230.508378][ T6865] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  230.876191][ T6867] FAULT_INJECTION: forcing a failure.
[  230.876191][ T6867] name failslab, interval 1, probability 0, space 0, times 0
[  230.892204][ T6867] CPU: 0 UID: 0 PID: 6867 Comm: syz.0.310 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  230.892230][ T6867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  230.892241][ T6867] Call Trace:
[  230.892249][ T6867]  <TASK>
[  230.892257][ T6867]  dump_stack_lvl+0x241/0x360
[  230.892290][ T6867]  ? __pfx_dump_stack_lvl+0x10/0x10
[  230.892314][ T6867]  ? __pfx__printk+0x10/0x10
[  230.892341][ T6867]  ? __pfx___might_resched+0x10/0x10
[  230.892368][ T6867]  should_fail_ex+0x424/0x570
[  230.892392][ T6867]  should_failslab+0xac/0x100
[  230.892417][ T6867]  __kmalloc_node_track_caller_noprof+0xe2/0x4d0
[  230.892442][ T6867]  ? __kernfs_new_node+0xa2/0x890
[  230.892459][ T6867]  ? kernel_text_address+0xa7/0xe0
[  230.892479][ T6867]  kstrdup+0x42/0x100
[  230.892502][ T6867]  __kernfs_new_node+0xa2/0x890
[  230.892522][ T6867]  ? __lock_acquire+0xad5/0xd80
[  230.892545][ T6867]  ? __pfx___kernfs_new_node+0x10/0x10
[  230.892574][ T6867]  ? kernfs_root+0x1c/0x230
[  230.892593][ T6867]  ? kernfs_root+0x1c/0x230
[  230.892612][ T6867]  kernfs_new_node+0x114/0x220
[  230.892636][ T6867]  kernfs_create_dir_ns+0x43/0x120
[  230.892659][ T6867]  sysfs_create_dir_ns+0x1a2/0x3f0
[  230.892681][ T6867]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  230.892707][ T6867]  kobject_add_internal+0x435/0x8d0
[  230.892738][ T6867]  kobject_add+0x15b/0x230
[  230.892762][ T6867]  ? kobject_put+0x43d/0x480
[  230.892782][ T6867]  ? __pfx_kobject_add+0x10/0x10
[  230.892804][ T6867]  ? bus_get_dev_root+0x127/0x160
[  230.892831][ T6867]  ? get_device_parent+0x405/0x410
[  230.892850][ T6867]  ? device_add+0x318/0xbf0
[  230.892872][ T6867]  device_add+0x4e5/0xbf0
[  230.892893][ T6867]  ? iommufd_test+0x2efb/0x56a0
[  230.892914][ T6867]  iommufd_test+0x3350/0x56a0
[  230.892944][ T6867]  ? __pfx_iommufd_test+0x10/0x10
[  230.892974][ T6867]  ? __lock_acquire+0xad5/0xd80
[  230.893023][ T6867]  iommufd_fops_ioctl+0x4fc/0x610
[  230.893050][ T6867]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  230.893077][ T6867]  ? __fget_files+0x2a/0x420
[  230.893099][ T6867]  ? __fget_files+0x2a/0x420
[  230.893119][ T6867]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  230.893143][ T6867]  __se_sys_ioctl+0xf1/0x160
[  230.893167][ T6867]  do_syscall_64+0xf3/0x230
[  230.893187][ T6867]  ? clear_bhb_loop+0x45/0xa0
[  230.893216][ T6867]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  230.893233][ T6867] RIP: 0033:0x7f33a0d8d169
[  230.893250][ T6867] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  230.893265][ T6867] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  230.893285][ T6867] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  230.893297][ T6867] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  230.893308][ T6867] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  230.893319][ T6867] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  230.893327][ T6867] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  230.893354][ T6867]  </TASK>
[  230.893366][ T6867] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  231.248305][ T6869] FAULT_INJECTION: forcing a failure.
[  231.248305][ T6869] name failslab, interval 1, probability 0, space 0, times 0
[  231.305900][ T6869] CPU: 1 UID: 0 PID: 6869 Comm: syz.0.311 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  231.305928][ T6869] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  231.305938][ T6869] Call Trace:
[  231.305945][ T6869]  <TASK>
[  231.305952][ T6869]  dump_stack_lvl+0x241/0x360
[  231.305995][ T6869]  ? __pfx_dump_stack_lvl+0x10/0x10
[  231.306018][ T6869]  ? __pfx__printk+0x10/0x10
[  231.306044][ T6869]  ? __pfx___might_resched+0x10/0x10
[  231.306069][ T6869]  should_fail_ex+0x424/0x570
[  231.306092][ T6869]  should_failslab+0xac/0x100
[  231.306116][ T6869]  kmem_cache_alloc_noprof+0x78/0x390
[  231.306139][ T6869]  ? __kernfs_new_node+0xdf/0x890
[  231.306168][ T6869]  __kernfs_new_node+0xdf/0x890
[  231.306185][ T6869]  ? __lock_acquire+0xad5/0xd80
[  231.306205][ T6869]  ? __pfx___kernfs_new_node+0x10/0x10
[  231.306225][ T6869]  ? kernfs_root+0x1c/0x230
[  231.306239][ T6869]  ? kernfs_root+0x1c/0x230
[  231.306254][ T6869]  kernfs_new_node+0x114/0x220
[  231.306276][ T6869]  kernfs_create_link+0xa5/0x1f0
[  231.306301][ T6869]  sysfs_do_create_link_sd+0x85/0x110
[  231.306322][ T6869]  software_node_notify+0xd9/0x1b0
[  231.306343][ T6869]  device_add+0x513/0xbf0
[  231.306364][ T6869]  ? iommufd_test+0x2efb/0x56a0
[  231.306386][ T6869]  iommufd_test+0x3350/0x56a0
[  231.306415][ T6869]  ? __pfx_iommufd_test+0x10/0x10
[  231.306445][ T6869]  ? __lock_acquire+0xad5/0xd80
[  231.306494][ T6869]  iommufd_fops_ioctl+0x4fc/0x610
[  231.306521][ T6869]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  231.306547][ T6869]  ? __fget_files+0x2a/0x420
[  231.306565][ T6869]  ? __fget_files+0x2a/0x420
[  231.306585][ T6869]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  231.306610][ T6869]  __se_sys_ioctl+0xf1/0x160
[  231.306632][ T6869]  do_syscall_64+0xf3/0x230
[  231.306655][ T6869]  ? clear_bhb_loop+0x45/0xa0
[  231.306676][ T6869]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  231.306692][ T6869] RIP: 0033:0x7f33a0d8d169
[  231.306709][ T6869] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  231.306723][ T6869] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  231.306743][ T6869] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  231.306757][ T6869] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  231.306768][ T6869] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  231.306779][ T6869] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  231.306790][ T6869] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  231.306818][ T6869]  </TASK>
[  231.307655][ T6869] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  231.631832][ T6871] FAULT_INJECTION: forcing a failure.
[  231.631832][ T6871] name failslab, interval 1, probability 0, space 0, times 0
[  231.648331][ T6871] CPU: 1 UID: 0 PID: 6871 Comm: syz.0.312 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  231.648357][ T6871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  231.648367][ T6871] Call Trace:
[  231.648375][ T6871]  <TASK>
[  231.648384][ T6871]  dump_stack_lvl+0x241/0x360
[  231.648417][ T6871]  ? __pfx_dump_stack_lvl+0x10/0x10
[  231.648441][ T6871]  ? __pfx__printk+0x10/0x10
[  231.648470][ T6871]  ? __pfx___might_resched+0x10/0x10
[  231.648496][ T6871]  should_fail_ex+0x424/0x570
[  231.648521][ T6871]  should_failslab+0xac/0x100
[  231.648546][ T6871]  kmem_cache_alloc_noprof+0x78/0x390
[  231.648569][ T6871]  ? __kernfs_new_node+0xdf/0x890
[  231.648592][ T6871]  __kernfs_new_node+0xdf/0x890
[  231.648612][ T6871]  ? __lock_acquire+0xad5/0xd80
[  231.648635][ T6871]  ? __pfx___kernfs_new_node+0x10/0x10
[  231.648664][ T6871]  ? kernfs_root+0x1c/0x230
[  231.648682][ T6871]  ? kernfs_root+0x1c/0x230
[  231.648700][ T6871]  kernfs_new_node+0x114/0x220
[  231.648722][ T6871]  kernfs_create_dir_ns+0x43/0x120
[  231.648743][ T6871]  sysfs_create_dir_ns+0x1a2/0x3f0
[  231.648763][ T6871]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  231.648789][ T6871]  kobject_add_internal+0x435/0x8d0
[  231.648821][ T6871]  kobject_add+0x15b/0x230
[  231.648844][ T6871]  ? kobject_put+0x43d/0x480
[  231.648866][ T6871]  ? __pfx_kobject_add+0x10/0x10
[  231.648889][ T6871]  ? bus_get_dev_root+0x127/0x160
[  231.648911][ T6871]  ? get_device_parent+0x405/0x410
[  231.648929][ T6871]  ? device_add+0x318/0xbf0
[  231.648950][ T6871]  device_add+0x4e5/0xbf0
[  231.648972][ T6871]  ? iommufd_test+0x2efb/0x56a0
[  231.648993][ T6871]  iommufd_test+0x3350/0x56a0
[  231.649024][ T6871]  ? __pfx_iommufd_test+0x10/0x10
[  231.649054][ T6871]  ? __lock_acquire+0xad5/0xd80
[  231.649115][ T6871]  iommufd_fops_ioctl+0x4fc/0x610
[  231.649143][ T6871]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  231.649171][ T6871]  ? __fget_files+0x2a/0x420
[  231.649193][ T6871]  ? __fget_files+0x2a/0x420
[  231.649213][ T6871]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  231.649238][ T6871]  __se_sys_ioctl+0xf1/0x160
[  231.649261][ T6871]  do_syscall_64+0xf3/0x230
[  231.649283][ T6871]  ? clear_bhb_loop+0x45/0xa0
[  231.649304][ T6871]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  231.649322][ T6871] RIP: 0033:0x7f33a0d8d169
[  231.649339][ T6871] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  231.649353][ T6871] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  231.649460][ T6871] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  231.649475][ T6871] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  231.649486][ T6871] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  231.649497][ T6871] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  231.649508][ T6871] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  231.649536][ T6871]  </TASK>
[  231.649567][ T6871] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  232.028563][ T6873] FAULT_INJECTION: forcing a failure.
[  232.028563][ T6873] name failslab, interval 1, probability 0, space 0, times 0
[  232.044835][ T6873] CPU: 0 UID: 0 PID: 6873 Comm: syz.0.313 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  232.044862][ T6873] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  232.044873][ T6873] Call Trace:
[  232.044880][ T6873]  <TASK>
[  232.044888][ T6873]  dump_stack_lvl+0x241/0x360
[  232.044922][ T6873]  ? __pfx_dump_stack_lvl+0x10/0x10
[  232.044946][ T6873]  ? __pfx__printk+0x10/0x10
[  232.044974][ T6873]  ? __pfx___might_resched+0x10/0x10
[  232.045000][ T6873]  should_fail_ex+0x424/0x570
[  232.045024][ T6873]  should_failslab+0xac/0x100
[  232.045050][ T6873]  kmem_cache_alloc_noprof+0x78/0x390
[  232.045072][ T6873]  ? __kernfs_new_node+0xdf/0x890
[  232.045095][ T6873]  __kernfs_new_node+0xdf/0x890
[  232.045113][ T6873]  ? __lock_acquire+0xad5/0xd80
[  232.045139][ T6873]  ? __pfx___kernfs_new_node+0x10/0x10
[  232.045165][ T6873]  ? kernfs_root+0x1c/0x230
[  232.045184][ T6873]  ? kernfs_root+0x1c/0x230
[  232.045204][ T6873]  kernfs_new_node+0x114/0x220
[  232.045227][ T6873]  kernfs_create_link+0xa5/0x1f0
[  232.045254][ T6873]  sysfs_do_create_link_sd+0x85/0x110
[  232.045274][ T6873]  software_node_notify+0xd9/0x1b0
[  232.045296][ T6873]  device_add+0x513/0xbf0
[  232.045324][ T6873]  ? iommufd_test+0x2efb/0x56a0
[  232.045345][ T6873]  iommufd_test+0x3350/0x56a0
[  232.045375][ T6873]  ? __pfx_iommufd_test+0x10/0x10
[  232.045405][ T6873]  ? __lock_acquire+0xad5/0xd80
[  232.045453][ T6873]  iommufd_fops_ioctl+0x4fc/0x610
[  232.045479][ T6873]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  232.045506][ T6873]  ? __fget_files+0x2a/0x420
[  232.045528][ T6873]  ? __fget_files+0x2a/0x420
[  232.045548][ T6873]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  232.045573][ T6873]  __se_sys_ioctl+0xf1/0x160
[  232.045595][ T6873]  do_syscall_64+0xf3/0x230
[  232.045618][ T6873]  ? clear_bhb_loop+0x45/0xa0
[  232.045639][ T6873]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  232.045656][ T6873] RIP: 0033:0x7f33a0d8d169
[  232.045673][ T6873] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  232.045687][ T6873] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  232.045706][ T6873] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  232.045719][ T6873] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  232.045730][ T6873] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  232.045740][ T6873] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  232.045751][ T6873] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  232.045778][ T6873]  </TASK>
[  232.046522][ T6873] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  232.374659][ T6875] FAULT_INJECTION: forcing a failure.
[  232.374659][ T6875] name failslab, interval 1, probability 0, space 0, times 0
[  232.425443][ T6875] CPU: 1 UID: 0 PID: 6875 Comm: syz.0.314 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  232.425473][ T6875] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  232.425484][ T6875] Call Trace:
[  232.425491][ T6875]  <TASK>
[  232.425500][ T6875]  dump_stack_lvl+0x241/0x360
[  232.425533][ T6875]  ? __pfx_dump_stack_lvl+0x10/0x10
[  232.425557][ T6875]  ? __pfx__printk+0x10/0x10
[  232.425585][ T6875]  ? __pfx___might_resched+0x10/0x10
[  232.425610][ T6875]  should_fail_ex+0x424/0x570
[  232.425634][ T6875]  should_failslab+0xac/0x100
[  232.425660][ T6875]  kmem_cache_alloc_noprof+0x78/0x390
[  232.425682][ T6875]  ? __kernfs_new_node+0xdf/0x890
[  232.425706][ T6875]  __kernfs_new_node+0xdf/0x890
[  232.425724][ T6875]  ? __lock_acquire+0xad5/0xd80
[  232.425747][ T6875]  ? __pfx___kernfs_new_node+0x10/0x10
[  232.425774][ T6875]  ? kernfs_root+0x1c/0x230
[  232.425793][ T6875]  ? kernfs_root+0x1c/0x230
[  232.425813][ T6875]  kernfs_new_node+0x114/0x220
[  232.425836][ T6875]  kernfs_create_link+0xa5/0x1f0
[  232.425862][ T6875]  sysfs_do_create_link_sd+0x85/0x110
[  232.425883][ T6875]  software_node_notify+0xd9/0x1b0
[  232.425905][ T6875]  device_add+0x513/0xbf0
[  232.425926][ T6875]  ? iommufd_test+0x2efb/0x56a0
[  232.425948][ T6875]  iommufd_test+0x3350/0x56a0
[  232.425977][ T6875]  ? __pfx_iommufd_test+0x10/0x10
[  232.426007][ T6875]  ? __lock_acquire+0xad5/0xd80
[  232.426057][ T6875]  iommufd_fops_ioctl+0x4fc/0x610
[  232.426083][ T6875]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  232.426111][ T6875]  ? __fget_files+0x2a/0x420
[  232.426133][ T6875]  ? __fget_files+0x2a/0x420
[  232.426153][ T6875]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  232.426178][ T6875]  __se_sys_ioctl+0xf1/0x160
[  232.426201][ T6875]  do_syscall_64+0xf3/0x230
[  232.426223][ T6875]  ? clear_bhb_loop+0x45/0xa0
[  232.426243][ T6875]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  232.426259][ T6875] RIP: 0033:0x7f33a0d8d169
[  232.426276][ T6875] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  232.426291][ T6875] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  232.426317][ T6875] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  232.426330][ T6875] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  232.426341][ T6875] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  232.426351][ T6875] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  232.426362][ T6875] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  232.426389][ T6875]  </TASK>
[  232.427123][ T6875] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  232.725882][ T6877] FAULT_INJECTION: forcing a failure.
[  232.725882][ T6877] name failslab, interval 1, probability 0, space 0, times 0
[  232.787425][ T6877] CPU: 0 UID: 0 PID: 6877 Comm: syz.0.315 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  232.787452][ T6877] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  232.787463][ T6877] Call Trace:
[  232.787471][ T6877]  <TASK>
[  232.787479][ T6877]  dump_stack_lvl+0x241/0x360
[  232.787511][ T6877]  ? __pfx_dump_stack_lvl+0x10/0x10
[  232.787535][ T6877]  ? __pfx__printk+0x10/0x10
[  232.787562][ T6877]  ? __pfx___might_resched+0x10/0x10
[  232.787589][ T6877]  should_fail_ex+0x424/0x570
[  232.787612][ T6877]  should_failslab+0xac/0x100
[  232.787637][ T6877]  kmem_cache_alloc_noprof+0x78/0x390
[  232.787660][ T6877]  ? __kernfs_new_node+0xdf/0x890
[  232.787683][ T6877]  __kernfs_new_node+0xdf/0x890
[  232.787701][ T6877]  ? __lock_acquire+0xad5/0xd80
[  232.787727][ T6877]  ? __pfx___kernfs_new_node+0x10/0x10
[  232.787754][ T6877]  ? kernfs_root+0x1c/0x230
[  232.787772][ T6877]  ? kernfs_root+0x1c/0x230
[  232.787793][ T6877]  kernfs_new_node+0x114/0x220
[  232.787816][ T6877]  kernfs_create_link+0xa5/0x1f0
[  232.787842][ T6877]  sysfs_do_create_link_sd+0x85/0x110
[  232.787863][ T6877]  software_node_notify+0xd9/0x1b0
[  232.787885][ T6877]  device_add+0x513/0xbf0
[  232.787907][ T6877]  ? iommufd_test+0x2efb/0x56a0
[  232.787928][ T6877]  iommufd_test+0x3350/0x56a0
[  232.787957][ T6877]  ? __pfx_iommufd_test+0x10/0x10
[  232.787985][ T6877]  ? __lock_acquire+0xad5/0xd80
[  232.788034][ T6877]  iommufd_fops_ioctl+0x4fc/0x610
[  232.788061][ T6877]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  232.788088][ T6877]  ? __fget_files+0x2a/0x420
[  232.788110][ T6877]  ? __fget_files+0x2a/0x420
[  232.788130][ T6877]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  232.788155][ T6877]  __se_sys_ioctl+0xf1/0x160
[  232.788177][ T6877]  do_syscall_64+0xf3/0x230
[  232.788199][ T6877]  ? clear_bhb_loop+0x45/0xa0
[  232.788220][ T6877]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  232.788243][ T6877] RIP: 0033:0x7f33a0d8d169
[  232.788259][ T6877] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  232.788274][ T6877] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  232.788293][ T6877] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  232.788307][ T6877] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  232.788318][ T6877] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  232.788329][ T6877] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  232.788339][ T6877] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  232.788367][ T6877]  </TASK>
[  232.789113][ T6877] iommufd_mock iommufd_mock0: Adding to iommu group 0
2025/04/10 11:57:26 executed programs: 302
[  233.089821][ T6879] FAULT_INJECTION: forcing a failure.
[  233.089821][ T6879] name failslab, interval 1, probability 0, space 0, times 0
[  233.106958][ T6879] CPU: 1 UID: 0 PID: 6879 Comm: syz.0.316 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  233.106992][ T6879] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  233.107003][ T6879] Call Trace:
[  233.107010][ T6879]  <TASK>
[  233.107019][ T6879]  dump_stack_lvl+0x241/0x360
[  233.107051][ T6879]  ? __pfx_dump_stack_lvl+0x10/0x10
[  233.107076][ T6879]  ? __pfx__printk+0x10/0x10
[  233.107103][ T6879]  ? __pfx___might_resched+0x10/0x10
[  233.107129][ T6879]  should_fail_ex+0x424/0x570
[  233.107152][ T6879]  should_failslab+0xac/0x100
[  233.107178][ T6879]  kmem_cache_alloc_noprof+0x78/0x390
[  233.107200][ T6879]  ? __kernfs_new_node+0xdf/0x890
[  233.107223][ T6879]  __kernfs_new_node+0xdf/0x890
[  233.107242][ T6879]  ? __lock_acquire+0xad5/0xd80
[  233.107265][ T6879]  ? __pfx___kernfs_new_node+0x10/0x10
[  233.107294][ T6879]  ? kernfs_root+0x1c/0x230
[  233.107312][ T6879]  ? kernfs_root+0x1c/0x230
[  233.107332][ T6879]  kernfs_new_node+0x114/0x220
[  233.107356][ T6879]  kernfs_create_dir_ns+0x43/0x120
[  233.107378][ T6879]  sysfs_create_dir_ns+0x1a2/0x3f0
[  233.107400][ T6879]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  233.107426][ T6879]  kobject_add_internal+0x435/0x8d0
[  233.107457][ T6879]  kobject_add+0x15b/0x230
[  233.107481][ T6879]  ? kobject_put+0x43d/0x480
[  233.107502][ T6879]  ? __pfx_kobject_add+0x10/0x10
[  233.107525][ T6879]  ? bus_get_dev_root+0x127/0x160
[  233.107547][ T6879]  ? get_device_parent+0x405/0x410
[  233.107565][ T6879]  ? device_add+0x318/0xbf0
[  233.107586][ T6879]  device_add+0x4e5/0xbf0
[  233.107608][ T6879]  ? iommufd_test+0x2efb/0x56a0
[  233.107629][ T6879]  iommufd_test+0x3350/0x56a0
[  233.107659][ T6879]  ? __pfx_iommufd_test+0x10/0x10
[  233.107688][ T6879]  ? __lock_acquire+0xad5/0xd80
[  233.107738][ T6879]  iommufd_fops_ioctl+0x4fc/0x610
[  233.107764][ T6879]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  233.107791][ T6879]  ? __fget_files+0x2a/0x420
[  233.107813][ T6879]  ? __fget_files+0x2a/0x420
[  233.107833][ T6879]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  233.107858][ T6879]  __se_sys_ioctl+0xf1/0x160
[  233.107881][ T6879]  do_syscall_64+0xf3/0x230
[  233.107903][ T6879]  ? clear_bhb_loop+0x45/0xa0
[  233.107923][ T6879]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  233.107940][ T6879] RIP: 0033:0x7f33a0d8d169
[  233.107956][ T6879] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  233.107981][ T6879] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  233.108001][ T6879] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  233.108014][ T6879] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  233.108026][ T6879] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  233.108037][ T6879] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  233.108046][ T6879] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  233.108074][ T6879]  </TASK>
[  233.108099][ T6879] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  233.516119][ T6881] FAULT_INJECTION: forcing a failure.
[  233.516119][ T6881] name failslab, interval 1, probability 0, space 0, times 0
[  233.531789][ T6881] CPU: 1 UID: 0 PID: 6881 Comm: syz.0.317 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  233.531816][ T6881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  233.531827][ T6881] Call Trace:
[  233.531835][ T6881]  <TASK>
[  233.531844][ T6881]  dump_stack_lvl+0x241/0x360
[  233.531876][ T6881]  ? __pfx_dump_stack_lvl+0x10/0x10
[  233.531900][ T6881]  ? __pfx__printk+0x10/0x10
[  233.531926][ T6881]  ? __pfx___might_resched+0x10/0x10
[  233.531952][ T6881]  should_fail_ex+0x424/0x570
[  233.531976][ T6881]  should_failslab+0xac/0x100
[  233.532001][ T6881]  kmem_cache_alloc_noprof+0x78/0x390
[  233.532024][ T6881]  ? __kernfs_new_node+0xdf/0x890
[  233.532047][ T6881]  __kernfs_new_node+0xdf/0x890
[  233.532064][ T6881]  ? __lock_acquire+0xad5/0xd80
[  233.532089][ T6881]  ? __pfx___kernfs_new_node+0x10/0x10
[  233.532117][ T6881]  ? kernfs_root+0x1c/0x230
[  233.532136][ T6881]  ? kernfs_root+0x1c/0x230
[  233.532156][ T6881]  kernfs_new_node+0x114/0x220
[  233.532186][ T6881]  kernfs_create_link+0xa5/0x1f0
[  233.532212][ T6881]  sysfs_do_create_link_sd+0x85/0x110
[  233.532232][ T6881]  software_node_notify+0xd9/0x1b0
[  233.532254][ T6881]  device_add+0x513/0xbf0
[  233.532276][ T6881]  ? iommufd_test+0x2efb/0x56a0
[  233.532298][ T6881]  iommufd_test+0x3350/0x56a0
[  233.532328][ T6881]  ? __pfx_iommufd_test+0x10/0x10
[  233.532358][ T6881]  ? __lock_acquire+0xad5/0xd80
[  233.532407][ T6881]  iommufd_fops_ioctl+0x4fc/0x610
[  233.532434][ T6881]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  233.532461][ T6881]  ? __fget_files+0x2a/0x420
[  233.532483][ T6881]  ? __fget_files+0x2a/0x420
[  233.532504][ T6881]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  233.532528][ T6881]  __se_sys_ioctl+0xf1/0x160
[  233.532551][ T6881]  do_syscall_64+0xf3/0x230
[  233.532574][ T6881]  ? clear_bhb_loop+0x45/0xa0
[  233.532595][ T6881]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  233.532611][ T6881] RIP: 0033:0x7f33a0d8d169
[  233.532627][ T6881] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  233.532642][ T6881] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  233.532661][ T6881] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  233.532675][ T6881] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  233.532687][ T6881] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  233.532697][ T6881] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  233.532707][ T6881] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  233.532734][ T6881]  </TASK>
[  233.533493][ T6881] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  233.839740][ T6883] FAULT_INJECTION: forcing a failure.
[  233.839740][ T6883] name failslab, interval 1, probability 0, space 0, times 0
[  233.856711][ T6883] CPU: 0 UID: 0 PID: 6883 Comm: syz.0.318 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  233.856738][ T6883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  233.856750][ T6883] Call Trace:
[  233.856757][ T6883]  <TASK>
[  233.856766][ T6883]  dump_stack_lvl+0x241/0x360
[  233.856798][ T6883]  ? __pfx_dump_stack_lvl+0x10/0x10
[  233.856822][ T6883]  ? __pfx__printk+0x10/0x10
[  233.856849][ T6883]  ? __pfx___might_resched+0x10/0x10
[  233.856880][ T6883]  should_fail_ex+0x424/0x570
[  233.856903][ T6883]  should_failslab+0xac/0x100
[  233.856928][ T6883]  kmem_cache_alloc_noprof+0x78/0x390
[  233.856951][ T6883]  ? __kernfs_new_node+0xdf/0x890
[  233.856974][ T6883]  __kernfs_new_node+0xdf/0x890
[  233.856991][ T6883]  ? __lock_acquire+0xad5/0xd80
[  233.857016][ T6883]  ? __pfx___kernfs_new_node+0x10/0x10
[  233.857043][ T6883]  ? kernfs_root+0x1c/0x230
[  233.857062][ T6883]  ? kernfs_root+0x1c/0x230
[  233.857081][ T6883]  kernfs_new_node+0x114/0x220
[  233.857104][ T6883]  kernfs_create_link+0xa5/0x1f0
[  233.857130][ T6883]  sysfs_do_create_link_sd+0x85/0x110
[  233.857150][ T6883]  software_node_notify+0xd9/0x1b0
[  233.857172][ T6883]  device_add+0x513/0xbf0
[  233.857194][ T6883]  ? iommufd_test+0x2efb/0x56a0
[  233.857215][ T6883]  iommufd_test+0x3350/0x56a0
[  233.857245][ T6883]  ? __pfx_iommufd_test+0x10/0x10
[  233.857275][ T6883]  ? __lock_acquire+0xad5/0xd80
[  233.857324][ T6883]  iommufd_fops_ioctl+0x4fc/0x610
[  233.857351][ T6883]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  233.857378][ T6883]  ? __fget_files+0x2a/0x420
[  233.857400][ T6883]  ? __fget_files+0x2a/0x420
[  233.857420][ T6883]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  233.857445][ T6883]  __se_sys_ioctl+0xf1/0x160
[  233.857468][ T6883]  do_syscall_64+0xf3/0x230
[  233.857490][ T6883]  ? clear_bhb_loop+0x45/0xa0
[  233.857511][ T6883]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  233.857527][ T6883] RIP: 0033:0x7f33a0d8d169
[  233.857543][ T6883] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  233.857558][ T6883] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  233.857577][ T6883] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  233.857590][ T6883] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  233.857602][ T6883] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  233.857612][ T6883] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  233.857622][ T6883] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  233.857649][ T6883]  </TASK>
[  233.858399][ T6883] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  234.208809][ T6885] FAULT_INJECTION: forcing a failure.
[  234.208809][ T6885] name failslab, interval 1, probability 0, space 0, times 0
[  234.234629][ T6885] CPU: 0 UID: 0 PID: 6885 Comm: syz.0.319 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  234.234657][ T6885] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  234.234668][ T6885] Call Trace:
[  234.234676][ T6885]  <TASK>
[  234.234684][ T6885]  dump_stack_lvl+0x241/0x360
[  234.234717][ T6885]  ? __pfx_dump_stack_lvl+0x10/0x10
[  234.234741][ T6885]  ? __pfx__printk+0x10/0x10
[  234.234769][ T6885]  ? __pfx___might_resched+0x10/0x10
[  234.234795][ T6885]  should_fail_ex+0x424/0x570
[  234.234818][ T6885]  should_failslab+0xac/0x100
[  234.234844][ T6885]  kmem_cache_alloc_noprof+0x78/0x390
[  234.234873][ T6885]  ? __kernfs_new_node+0xdf/0x890
[  234.234897][ T6885]  __kernfs_new_node+0xdf/0x890
[  234.234914][ T6885]  ? __lock_acquire+0xad5/0xd80
[  234.234941][ T6885]  ? __pfx___kernfs_new_node+0x10/0x10
[  234.234968][ T6885]  ? kernfs_root+0x1c/0x230
[  234.234987][ T6885]  ? kernfs_root+0x1c/0x230
[  234.235007][ T6885]  kernfs_new_node+0x114/0x220
[  234.235031][ T6885]  kernfs_create_link+0xa5/0x1f0
[  234.235058][ T6885]  sysfs_do_create_link_sd+0x85/0x110
[  234.235078][ T6885]  software_node_notify+0xd9/0x1b0
[  234.235100][ T6885]  device_add+0x513/0xbf0
[  234.235121][ T6885]  ? iommufd_test+0x2efb/0x56a0
[  234.235142][ T6885]  iommufd_test+0x3350/0x56a0
[  234.235173][ T6885]  ? __pfx_iommufd_test+0x10/0x10
[  234.235204][ T6885]  ? __lock_acquire+0xad5/0xd80
[  234.235253][ T6885]  iommufd_fops_ioctl+0x4fc/0x610
[  234.235280][ T6885]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  234.235307][ T6885]  ? __fget_files+0x2a/0x420
[  234.235329][ T6885]  ? __fget_files+0x2a/0x420
[  234.235350][ T6885]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  234.235374][ T6885]  __se_sys_ioctl+0xf1/0x160
[  234.235393][ T6885]  do_syscall_64+0xf3/0x230
[  234.235413][ T6885]  ? clear_bhb_loop+0x45/0xa0
[  234.235432][ T6885]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  234.235447][ T6885] RIP: 0033:0x7f33a0d8d169
[  234.235461][ T6885] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  234.235475][ T6885] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  234.235493][ T6885] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  234.235504][ T6885] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  234.235515][ T6885] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  234.235525][ T6885] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  234.235535][ T6885] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  234.235563][ T6885]  </TASK>
[  234.236350][ T6885] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  234.538843][ T6887] FAULT_INJECTION: forcing a failure.
[  234.538843][ T6887] name failslab, interval 1, probability 0, space 0, times 0
[  234.586102][ T6887] CPU: 0 UID: 0 PID: 6887 Comm: syz.0.320 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  234.586128][ T6887] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  234.586140][ T6887] Call Trace:
[  234.586147][ T6887]  <TASK>
[  234.586156][ T6887]  dump_stack_lvl+0x241/0x360
[  234.586189][ T6887]  ? __pfx_dump_stack_lvl+0x10/0x10
[  234.586213][ T6887]  ? __pfx__printk+0x10/0x10
[  234.586241][ T6887]  ? __pfx___might_resched+0x10/0x10
[  234.586267][ T6887]  should_fail_ex+0x424/0x570
[  234.586291][ T6887]  should_failslab+0xac/0x100
[  234.586317][ T6887]  kmem_cache_alloc_noprof+0x78/0x390
[  234.586340][ T6887]  ? __kernfs_new_node+0xdf/0x890
[  234.586364][ T6887]  __kernfs_new_node+0xdf/0x890
[  234.586383][ T6887]  ? __lock_acquire+0xad5/0xd80
[  234.586406][ T6887]  ? __pfx___kernfs_new_node+0x10/0x10
[  234.586435][ T6887]  ? kernfs_root+0x1c/0x230
[  234.586453][ T6887]  ? kernfs_root+0x1c/0x230
[  234.586473][ T6887]  kernfs_new_node+0x114/0x220
[  234.586497][ T6887]  kernfs_create_dir_ns+0x43/0x120
[  234.586520][ T6887]  sysfs_create_dir_ns+0x1a2/0x3f0
[  234.586541][ T6887]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  234.586567][ T6887]  kobject_add_internal+0x435/0x8d0
[  234.586598][ T6887]  kobject_add+0x15b/0x230
[  234.586622][ T6887]  ? kobject_put+0x43d/0x480
[  234.586644][ T6887]  ? __pfx_kobject_add+0x10/0x10
[  234.586667][ T6887]  ? bus_get_dev_root+0x127/0x160
[  234.586689][ T6887]  ? get_device_parent+0x405/0x410
[  234.586706][ T6887]  ? device_add+0x318/0xbf0
[  234.586728][ T6887]  device_add+0x4e5/0xbf0
[  234.586749][ T6887]  ? iommufd_test+0x2efb/0x56a0
[  234.586770][ T6887]  iommufd_test+0x3350/0x56a0
[  234.586801][ T6887]  ? __pfx_iommufd_test+0x10/0x10
[  234.586830][ T6887]  ? __lock_acquire+0xad5/0xd80
[  234.586887][ T6887]  iommufd_fops_ioctl+0x4fc/0x610
[  234.586913][ T6887]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  234.586941][ T6887]  ? __fget_files+0x2a/0x420
[  234.586962][ T6887]  ? __fget_files+0x2a/0x420
[  234.586983][ T6887]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  234.587007][ T6887]  __se_sys_ioctl+0xf1/0x160
[  234.587030][ T6887]  do_syscall_64+0xf3/0x230
[  234.587051][ T6887]  ? clear_bhb_loop+0x45/0xa0
[  234.587073][ T6887]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  234.587090][ T6887] RIP: 0033:0x7f33a0d8d169
[  234.587106][ T6887] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  234.587121][ T6887] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  234.587140][ T6887] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  234.587153][ T6887] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  234.587165][ T6887] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  234.587176][ T6887] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  234.587187][ T6887] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  234.587212][ T6887]  </TASK>
[  234.884655][ T6887] kobject: kobject_add_internal failed for iommufd_mock0 (error: -12 parent: devices)
[  234.929331][ T6889] FAULT_INJECTION: forcing a failure.
[  234.929331][ T6889] name failslab, interval 1, probability 0, space 0, times 0
[  234.942448][ T6889] CPU: 1 UID: 0 PID: 6889 Comm: syz.0.321 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  234.942473][ T6889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  234.942484][ T6889] Call Trace:
[  234.942491][ T6889]  <TASK>
[  234.942499][ T6889]  dump_stack_lvl+0x241/0x360
[  234.942531][ T6889]  ? __pfx_dump_stack_lvl+0x10/0x10
[  234.942555][ T6889]  ? __pfx__printk+0x10/0x10
[  234.942581][ T6889]  ? __pfx___might_resched+0x10/0x10
[  234.942605][ T6889]  should_fail_ex+0x424/0x570
[  234.942627][ T6889]  should_failslab+0xac/0x100
[  234.942651][ T6889]  kmem_cache_alloc_noprof+0x78/0x390
[  234.942675][ T6889]  ? __kernfs_new_node+0xdf/0x890
[  234.942697][ T6889]  __kernfs_new_node+0xdf/0x890
[  234.942714][ T6889]  ? __lock_acquire+0xad5/0xd80
[  234.942739][ T6889]  ? __pfx___kernfs_new_node+0x10/0x10
[  234.942774][ T6889]  ? kernfs_root+0x1c/0x230
[  234.942792][ T6889]  ? kernfs_root+0x1c/0x230
[  234.942811][ T6889]  kernfs_new_node+0x114/0x220
[  234.942832][ T6889]  kernfs_create_link+0xa5/0x1f0
[  234.942858][ T6889]  sysfs_do_create_link_sd+0x85/0x110
[  234.942878][ T6889]  software_node_notify+0xd9/0x1b0
[  234.942899][ T6889]  device_add+0x513/0xbf0
[  234.942921][ T6889]  ? iommufd_test+0x2efb/0x56a0
[  234.942942][ T6889]  iommufd_test+0x3350/0x56a0
[  234.942973][ T6889]  ? __pfx_iommufd_test+0x10/0x10
[  234.943001][ T6889]  ? __lock_acquire+0xad5/0xd80
[  234.943048][ T6889]  iommufd_fops_ioctl+0x4fc/0x610
[  234.943075][ T6889]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  234.943102][ T6889]  ? __fget_files+0x2a/0x420
[  234.943123][ T6889]  ? __fget_files+0x2a/0x420
[  234.943143][ T6889]  ? __pfx_iommufd_fops_ioctl+0x10/0x10
[  234.943168][ T6889]  __se_sys_ioctl+0xf1/0x160
[  234.943191][ T6889]  do_syscall_64+0xf3/0x230
[  234.943212][ T6889]  ? clear_bhb_loop+0x45/0xa0
[  234.943233][ T6889]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  234.943250][ T6889] RIP: 0033:0x7f33a0d8d169
[  234.943266][ T6889] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[  234.943280][ T6889] RSP: 002b:00007f33a1ca6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  234.943300][ T6889] RAX: ffffffffffffffda RBX: 00007f33a0fa5fa0 RCX: 00007f33a0d8d169
[  234.943313][ T6889] RDX: 0000200000000200 RSI: 0000000000003ba0 RDI: 0000000000000003
[  234.943324][ T6889] RBP: 00007f33a1ca6090 R08: 0000000000000000 R09: 0000000000000000
[  234.943335][ T6889] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[  234.943346][ T6889] R13: 0000000000000000 R14: 00007f33a0fa5fa0 R15: 00007fff99442738
[  234.943373][ T6889]  </TASK>
[  234.944122][ T6889] iommufd_mock iommufd_mock0: Adding to iommu group 0
[  235.295292][ T6891] FAULT_INJECTION: forcing a failure.
[  235.295292][ T6891] name failslab, interval 1, probability 0, space 0, times 0
[  235.309990][ T6891] CPU: 1 UID: 0 PID: 6891 Comm: syz.0.322 Not tainted 6.15.0-rc1-syzkaller-g3b07108ada81-dirty #0 PREEMPT(full) 
[  235.310015][ T6891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[  235.310027][ T6891] Call Trace:
[  235.310034][ T6891]  <TASK>
[  235.310052][ T6891]  dump_stack_lvl+0x241/0x360