Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:8765' (ECDSA) to the list of known hosts.
2021/12/06 11:34:25 fuzzer started
2021/12/06 11:34:26 dialing manager at localhost:35719
2021/12/06 11:34:26 checking machine...
2021/12/06 11:34:26 checking revisions...
syzkaller login: [ 29.585069] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:34:26 testing simple program...
[ 29.634649] cgroup: Unknown subsys name 'net'
[ 29.636069] cgroup: Unknown subsys name 'net_prio'
[ 29.637420] cgroup: Unknown subsys name 'devices'
[ 29.638817] cgroup: Unknown subsys name 'blkio'
[ 29.659633]
[ 29.660029] =========================
[ 29.660770] WARNING: held lock freed!
[ 29.661539] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 29.662917] -------------------------
[ 29.664342] kworker/1:1/31 is freeing memory ffff8880183f4400-ffff8880183f45ff, with a lock still held there!
[ 29.667244] ffff8880183f4548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 29.669454] 3 locks held by kworker/1:1/31:
[ 29.670524] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 29.673085] #1: ffff888009aa7da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 29.676034] #2: ffff8880183f4548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 29.678353]
[ 29.678353] stack backtrace:
[ 29.679462] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 29.681408] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 29.684276] Workqueue: cgroup_destroy css_free_rwork_fn
[ 29.685632] Call Trace:
[ 29.686298]
[ 29.686861] dump_stack_lvl+0x8b/0xb3
[ 29.687822] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 29.689170] ? kernfs_put.part.0+0x334/0x540
[ 29.690306] kfree+0xb3/0x5a0
[ 29.691100] ? kmem_cache_free+0xce/0x640
[ 29.692069] kernfs_put.part.0+0x334/0x540
[ 29.693156] kernfs_put+0x42/0x50
[ 29.693931] __kernfs_remove+0x7ce/0xb00
[ 29.694728] ? lock_is_held_type+0xd7/0x130
[ 29.695806] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 29.696852] ? down_write+0xde/0x150
[ 29.697752] ? down_write_killable_nested+0x180/0x180
[ 29.699055] kernfs_destroy_root+0x89/0xb0
[ 29.699942] css_free_rwork_fn+0xa28/0xf40
[ 29.700835] process_one_work+0xa30/0x1710
[ 29.701696] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 29.702615] ? rwlock_bug.part.0+0x90/0x90
[ 29.703451] ? _raw_spin_lock_irq+0x41/0x50
[ 29.704318] worker_thread+0x62a/0x13e0
[ 29.705114] ? process_one_work+0x1710/0x1710
[ 29.706014] kthread+0x40c/0x500
[ 29.706769] ? set_kthread_struct+0x130/0x130
[ 29.707900] ret_from_fork+0x22/0x30
[ 29.708852]
[ 29.709434] ==================================================================
[ 29.710883] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 29.712057] Read of size 8 at addr ffff8880183f4540 by task kworker/1:1/31
[ 29.713437]
[ 29.713790] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 29.715364] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 29.717671] Workqueue: cgroup_destroy css_free_rwork_fn
[ 29.718738] Call Trace:
[ 29.719307]
[ 29.719742] dump_stack_lvl+0x8b/0xb3
[ 29.720515] print_address_description.constprop.0+0x1f/0x180
[ 29.721711] ? up_write+0x3ac/0x460
[ 29.722440] ? up_write+0x3ac/0x460
[ 29.723168] kasan_report.cold+0x7f/0x11b
[ 29.724001] ? up_write+0x3ac/0x460
[ 29.724714] up_write+0x3ac/0x460
[ 29.725419] css_free_rwork_fn+0xa28/0xf40
[ 29.726277] process_one_work+0xa30/0x1710
[ 29.727130] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 29.728074] ? rwlock_bug.part.0+0x90/0x90
[ 29.728941] ? _raw_spin_lock_irq+0x41/0x50
[ 29.729835] worker_thread+0x62a/0x13e0
[ 29.730629] ? process_one_work+0x1710/0x1710
[ 29.731532] kthread+0x40c/0x500
[ 29.732218] ? set_kthread_struct+0x130/0x130
[ 29.733297] ret_from_fork+0x22/0x30
[ 29.734269]
[ 29.734817]
[ 29.735226] Allocated by task 281:
[ 29.736109] kasan_save_stack+0x1e/0x40
[ 29.737122] __kasan_kmalloc+0x81/0xa0
[ 29.738114] kernfs_create_root+0x4c/0x410
[ 29.739183] cgroup_setup_root+0x346/0xb60
[ 29.740257] cgroup1_get_tree+0xc1b/0x1370
[ 29.741332] vfs_get_tree+0x8e/0x2f0
[ 29.742301] path_mount+0x131b/0x1f80
[ 29.743263] __x64_sys_mount+0x27e/0x300
[ 29.744299] do_syscall_64+0x3b/0x90
[ 29.745236] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 29.746557]
[ 29.746960] Freed by task 31:
[ 29.747730] kasan_save_stack+0x1e/0x40
[ 29.748594] kasan_set_track+0x21/0x30
[ 29.749380] kasan_set_free_info+0x20/0x30
[ 29.750267] __kasan_slab_free+0x108/0x170
[ 29.751133] kfree+0xc5/0x5a0
[ 29.751749] kernfs_put.part.0+0x334/0x540
[ 29.752604] kernfs_put+0x42/0x50
[ 29.753304] __kernfs_remove+0x7ce/0xb00
[ 29.754133] kernfs_destroy_root+0x89/0xb0
[ 29.754977] css_free_rwork_fn+0xa28/0xf40
[ 29.755826] process_one_work+0xa30/0x1710
[ 29.756662] worker_thread+0x62a/0x13e0
[ 29.757501] kthread+0x40c/0x500
[ 29.758373] ret_from_fork+0x22/0x30
[ 29.759315]
[ 29.759728] The buggy address belongs to the object at ffff8880183f4400
[ 29.759728] which belongs to the cache kmalloc-512 of size 512
[ 29.762408] The buggy address is located 320 bytes inside of
[ 29.762408] 512-byte region [ffff8880183f4400, ffff8880183f4600)
[ 29.764848] The buggy address belongs to the page:
[ 29.765823] page:0000000015cad289 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x183f4
[ 29.768130] head:0000000015cad289 order:2 compound_mapcount:0 compound_pincount:0
[ 29.770015] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 29.771504] raw: 0100000000010200 0000000000000000 dead000000000122 ffff888007841c80
[ 29.773450] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 29.775424] page dumped because: kasan: bad access detected
[ 29.776791]
[ 29.777203] Memory state around the buggy address:
[ 29.778417] ffff8880183f4400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 29.780233] ffff8880183f4480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 29.782077] >ffff8880183f4500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 29.783877] ^
[ 29.785221] ffff8880183f4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 29.787057] ffff8880183f4600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 29.788859] ==================================================================
[ 29.832750] cgroup: Unknown subsys name 'hugetlb'
[ 29.834056] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:34:26 Registers:
info registers vcpu 0
RAX=00000013e77b7478 RBX=0000000000000000 RCX=00000000000006e0 RDX=0000000000000013
RSI=ffff88806ce27240 RDI=000000000001bf70 RBP=ffff88806ce27240 RSP=ffff88806ce09ed8
R8 =0000000000000000 R9 =ffffffff858bd8d7 R10=ffffffff81368b44 R11=0000000000000001
R12=000000000001bf70 R13=0000000000000000 R14=0000000000000000 R15=ffff88806ce2a740
RIP=ffffffff810ec771 RFL=00000013 [----A-C] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806ce00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000001000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007fd7e4aae6d0 CR3=000000000df58000 CR4=00350ef0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
YMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 4112cf4000000000
YMM03=0000000000000000 0000000000000000 0000ff0000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 732f6c61636f6c2f 7273752f3d485441
YMM05=0000000000000000 0000000000000000 622f6c61636f6c2f 7273752f3a6e6962
YMM06=0000000000000000 0000000000000000 73752f3a6e696273 2f7273752f3a6e69
YMM07=0000000000000000 0000000000000000 6e69622f3a6e6962 732f3a6e69622f72
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000
info registers vcpu 1
RAX=0000000000000000 RBX=00000000000003f9 RCX=0000000000000000 RDX=00000000000003f9
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888009aa7688
R8 =0000000000000000 R9 =ffff888009aa761b R10=ffffffff82372fe3 R11=0000000000000001
R12=0000000000000000 R13=0000000000000001 R14=ffffffff87381a78 R15=ffffffff87381a70
RIP=ffffffff82364138 RFL=00000006 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806cf00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000048000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007ffc938be000 CR3=000000000df58000 CR4=00350ee0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
YMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 4112cf4000000000
YMM03=0000000000000000 0000000000000000 0000ff0000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 732f6c61636f6c2f 7273752f3d485441
YMM05=0000000000000000 0000000000000000 622f6c61636f6c2f 7273752f3a6e6962
YMM06=0000000000000000 0000000000000000 73752f3a6e696273 2f7273752f3a6e69
YMM07=0000000000000000 0000000000000000 6e69622f3a6e6962 732f3a6e69622f72
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000