UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
------------[ cut here ]------------
kernfs_put: syz4/pids.events: released with incorrect active_ref 0
WARNING: CPU: 1 PID: 13883 at fs/kernfs/dir.c:531 kernfs_put.part.0+0x433/0x540
Modules linked in:
CPU: 1 PID: 13883 Comm: kworker/1:1 Not tainted 5.19.0-rc5-next-20220705 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: events kernfs_notify_workfn
RIP: 0010:kernfs_put.part.0+0x433/0x540
Code: 03 80 3c 18 00 0f 85 ea 00 00 00 4d 8b 7d 38 e8 73 0b a7 ff 48 8b 14 24 44 89 f1 4c 89 fe 48 c7 c7 e0 58 72 84 e8 93 ac 6c 02 <0f> 0b e9 b9 fc ff ff 48 89 ef e8 0e b3 d9 ff e9 c1 fd ff ff e8 04
RSP: 0018:ffff888043a5fbd8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff88804532b580 RSI: ffffffff812bd348 RDI: ffffed100874bf6d
RBP: ffff888043cb3a30 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888043cb39f8
R13: ffff88800d3b02b8 R14: 0000000000000000 R15: ffff8880083436b8
FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f261a70b9c8 CR3: 0000000046046000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
Call Trace:
kernfs_put+0x42/0x50
kernfs_notify_workfn+0x417/0x560
process_one_work+0xa0f/0x1690
worker_thread+0x637/0x1250
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
irq event stamp: 1763295
hardirqs last enabled at (1763305): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (1763316): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (1762884): [] __irq_exit_rcu+0x113/0x170
softirqs last disabled at (1762851): [] __irq_exit_rcu+0x113/0x170
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: use-after-free in llist_del_first+0x89/0xa0
Read of size 8 at addr ffff888043cb3a78 by task kworker/1:1/13883
CPU: 1 PID: 13883 Comm: kworker/1:1 Tainted: G W 5.19.0-rc5-next-20220705 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: events kernfs_notify_workfn
Call Trace:
dump_stack_lvl+0x8b/0xb3
print_report.cold+0x5e/0x5e1
kasan_report+0xb1/0x1b0
llist_del_first+0x89/0xa0
kernfs_notify_workfn+0x78/0x560
process_one_work+0xa0f/0x1690
worker_thread+0x637/0x1250
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
Allocated by task 299:
kasan_save_stack+0x1e/0x40
__kasan_slab_alloc+0x66/0x80
kmem_cache_alloc+0x1b1/0x490
__kernfs_new_node+0xd4/0x8b0
kernfs_new_node+0x93/0x120
__kernfs_create_file+0x51/0x350
------------[ cut here ]------------
cgroup_addrm_files+0x3e2/0x9d0
css_populate_dir+0x19b/0x450
WARNING: CPU: 0 PID: 21465 at fs/kernfs/dir.c:504 kernfs_get.part.0+0x69/0x80
cgroup_apply_control_enable+0x3ae/0xa40
Modules linked in:
cgroup_mkdir+0x824/0x11f0
kernfs_iop_mkdir+0x149/0x1d0
CPU: 0 PID: 21465 Comm: syz-executor.4 Tainted: G W 5.19.0-rc5-next-20220705 #1
vfs_mkdir+0x417/0x6a0
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
do_mkdirat+0x17b/0x2e0
RIP: 0010:kernfs_get.part.0+0x69/0x80
__x64_sys_mkdir+0xf2/0x140
Code: 31 ff 89 ee e8 c8 0c a7 ff 85 ed 74 18 e8 ef 0f a7 ff be 04 00 00 00 48 89 df e8 d2 ba d9 ff f0 ff 03 5b 5d c3 e8 d7 0f a7 ff <0f> 0b eb df 48 89 df e8 7b b7 d9 ff eb c6 66 0f 1f 84 00 00 00 00
do_syscall_64+0x3b/0x90
RSP: 0018:ffff88804606fa40 EFLAGS: 00010093
entry_SYSCALL_64_after_hwframe+0x46/0xb0
Freed by task 13883:
RAX: 0000000000000000 RBX: ffff888043cb39f8 RCX: 0000000000000000
kasan_save_stack+0x1e/0x40
RDX: ffff88800fea9ac0 RSI: ffffffff819de5c9 RDI: 0000000000000005
kasan_set_track+0x21/0x30
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
kasan_set_free_info+0x20/0x30
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
__kasan_slab_free+0x108/0x190
R13: 1ffffffff0a01e40 R14: ffff888043cb39f8 R15: ffff888009148930
kmem_cache_free+0xfb/0x600
FS: 0000555555dee400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
kernfs_put.part.0+0x2c7/0x540
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernfs_put+0x42/0x50
CR2: 00007f92b5be5ae0 CR3: 0000000046046000 CR4: 0000000000350ef0
kernfs_notify_workfn+0x417/0x560
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
process_one_work+0xa0f/0x1690
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
worker_thread+0x637/0x1250
Call Trace:
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
kernfs_get+0x1b/0x30
The buggy address belongs to the object at ffff888043cb39f8
which belongs to the cache kernfs_node_cache of size 168
kernfs_notify+0x180/0x350
The buggy address is located 128 bytes inside of
168-byte region [ffff888043cb39f8, ffff888043cb3aa0)
cgroup_file_notify+0xf5/0x1a0
The buggy address belongs to the physical page:
pids_can_fork+0x22f/0x370
page:000000007729ef4c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x43cb3
flags: 0x100000000000200(slab|node=0|zone=1)
cgroup_can_fork+0x332/0x11b0
raw: 0100000000000200 0000000000000000 dead000000000122 ffff8880080358c0
copy_process+0x4023/0x6d60
raw: 0000000000000000 0000000000110011 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
kernel_clone+0xe7/0xa60
Memory state around the buggy address:
ffff888043cb3900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff888043cb3980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa
>ffff888043cb3a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
__do_sys_clone+0xba/0x100
ffff888043cb3a80: fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00
ffff888043cb3b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f261c995f41
Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00
RSP: 002b:00007ffe3f350e38 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f2619ee9700 RCX: 00007f261c995f41
RDX: 00007f2619ee99d0 RSI: 00007f2619ee92f0 RDI: 00000000003d0f00
RBP: 00007ffe3f351070 R08: 00007f2619ee9700 R09: 00007f2619ee9700
R10: 00007f2619ee99d0 R11: 0000000000000206 R12: 00007ffe3f350eee
R13: 00007ffe3f350eef R14: 00007f2619ee9300 R15: 0000555555defd50
irq event stamp: 7818
hardirqs last enabled at (7817): [] _raw_spin_unlock_irq+0x1f/0x40
hardirqs last disabled at (7818): [] _raw_spin_lock_irqsave+0x4e/0x50
softirqs last enabled at (7802): [] fpu_clone+0x3be/0xb00
softirqs last disabled at (7800): [] fpu_clone+0x331/0xb00
---[ end trace 0000000000000000 ]---
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
EXT4-fs: Ignoring removed nomblk_io_submit option
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
journal_path: Lookup failure for './file0'
misc raw-gadget: fail, usb_gadget_register_driver returned -16
EXT4-fs: error: could not find journal device path
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16