Warning: Permanently added '[localhost]:18892' (ECDSA) to the list of known hosts.
2021/12/06 11:33:09 fuzzer started
2021/12/06 11:33:10 dialing manager at localhost:35719
2021/12/06 11:33:10 checking machine...
2021/12/06 11:33:10 checking revisions...
syzkaller login: [ 34.951373] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:33:10 testing simple program...
[ 34.995522] cgroup: Unknown subsys name 'net'
[ 34.997248] cgroup: Unknown subsys name 'net_prio'
[ 34.998828] cgroup: Unknown subsys name 'devices'
[ 35.000289] cgroup: Unknown subsys name 'blkio'
[ 35.021866]
[ 35.022333] =========================
[ 35.023285] WARNING: held lock freed!
[ 35.024234] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.025685] -------------------------
[ 35.026672] kworker/0:1/10 is freeing memory ffff88800f6c6c00-ffff88800f6c6dff, with a lock still held there!
[ 35.028494] ffff88800f6c6d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.029859] 3 locks held by kworker/0:1/10:
[ 35.030495] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.032056] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.033816] #2: ffff88800f6c6d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.035192]
[ 35.035192] stack backtrace:
[ 35.035846] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.037015] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.038481] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.039072] Call Trace:
[ 35.039349]
[ 35.039588] dump_stack_lvl+0x8b/0xb3
[ 35.040021] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.040603] ? kernfs_put.part.0+0x334/0x540
[ 35.041097] kfree+0xb3/0x5a0
[ 35.041440] ? kmem_cache_free+0xce/0x640
[ 35.041893] kernfs_put.part.0+0x334/0x540
[ 35.042361] kernfs_put+0x42/0x50
[ 35.042743] __kernfs_remove+0x7ce/0xb00
[ 35.043189] ? lock_is_held_type+0xd7/0x130
[ 35.043663] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.044240] ? down_write+0xde/0x150
[ 35.044662] ? down_write_killable_nested+0x180/0x180
[ 35.045233] kernfs_destroy_root+0x89/0xb0
[ 35.045696] css_free_rwork_fn+0xa28/0xf40
[ 35.046175] process_one_work+0xa30/0x1710
[ 35.046641] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.047157] ? rwlock_bug.part.0+0x90/0x90
[ 35.047622] ? _raw_spin_lock_irq+0x41/0x50
[ 35.048097] worker_thread+0x62a/0x13e0
[ 35.048531] ? process_one_work+0x1710/0x1710
[ 35.049031] kthread+0x40c/0x500
[ 35.049402] ? set_kthread_struct+0x130/0x130
[ 35.049894] ret_from_fork+0x22/0x30
[ 35.050304]
[ 35.050593] ==================================================================
[ 35.051389] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.052040] Read of size 8 at addr ffff88800f6c6d40 by task kworker/0:1/10
[ 35.052796]
[ 35.052973] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.053819] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.055049] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.055627] Call Trace:
[ 35.055907]
[ 35.056159] dump_stack_lvl+0x8b/0xb3
[ 35.056572] print_address_description.constprop.0+0x1f/0x180
[ 35.057235] ? up_write+0x3ac/0x460
[ 35.057625] ? up_write+0x3ac/0x460
[ 35.058018] kasan_report.cold+0x7f/0x11b
[ 35.058472] ? up_write+0x3ac/0x460
[ 35.058878] up_write+0x3ac/0x460
[ 35.059261] css_free_rwork_fn+0xa28/0xf40
[ 35.059729] process_one_work+0xa30/0x1710
[ 35.060198] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.060720] ? rwlock_bug.part.0+0x90/0x90
[ 35.061181] ? _raw_spin_lock_irq+0x41/0x50
[ 35.061650] worker_thread+0x62a/0x13e0
[ 35.062085] ? process_one_work+0x1710/0x1710
[ 35.062579] kthread+0x40c/0x500
[ 35.062953] ? set_kthread_struct+0x130/0x130
[ 35.063443] ret_from_fork+0x22/0x30
[ 35.063858]
[ 35.064112]
[ 35.064289] Allocated by task 280:
[ 35.064677] kasan_save_stack+0x1e/0x40
[ 35.065122] __kasan_kmalloc+0x81/0xa0
[ 35.065547] kernfs_create_root+0x4c/0x410
[ 35.066004] cgroup_setup_root+0x346/0xb60
[ 35.066464] cgroup1_get_tree+0xc1b/0x1370
[ 35.066926] vfs_get_tree+0x8e/0x2f0
[ 35.067336] path_mount+0x131b/0x1f80
[ 35.067757] __x64_sys_mount+0x27e/0x300
[ 35.068201] do_syscall_64+0x3b/0x90
[ 35.068614] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.069186]
[ 35.069364] Freed by task 10:
[ 35.069698] kasan_save_stack+0x1e/0x40
[ 35.070131] kasan_set_track+0x21/0x30
[ 35.070553] kasan_set_free_info+0x20/0x30
[ 35.071017] __kasan_slab_free+0x108/0x170
[ 35.071470] kfree+0xc5/0x5a0
[ 35.071798] kernfs_put.part.0+0x334/0x540
[ 35.072251] kernfs_put+0x42/0x50
[ 35.072613] __kernfs_remove+0x7ce/0xb00
[ 35.073044] kernfs_destroy_root+0x89/0xb0
[ 35.073500] css_free_rwork_fn+0xa28/0xf40
[ 35.073949] process_one_work+0xa30/0x1710
[ 35.074418] worker_thread+0x62a/0x13e0
[ 35.074858] kthread+0x40c/0x500
[ 35.075210] ret_from_fork+0x22/0x30
[ 35.075601]
[ 35.075772] The buggy address belongs to the object at ffff88800f6c6c00
[ 35.075772] which belongs to the cache kmalloc-512 of size 512
[ 35.077099] The buggy address is located 320 bytes inside of
[ 35.077099] 512-byte region [ffff88800f6c6c00, ffff88800f6c6e00)
[ 35.078330] The buggy address belongs to the page:
[ 35.078840] page:00000000155ef208 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf6c4
[ 35.079806] head:00000000155ef208 order:2 compound_mapcount:0 compound_pincount:0
[ 35.080608] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.081239] raw: 0100000000010200 ffffea0000215900 dead000000000002 ffff888007841c80
[ 35.082055] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.082893] page dumped because: kasan: bad access detected
[ 35.083499]
[ 35.083675] Memory state around the buggy address:
[ 35.084202] ffff88800f6c6c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.084967] ffff88800f6c6c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.085728] >ffff88800f6c6d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.086505] ^
[ 35.087072] ffff88800f6c6d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.087832] ffff88800f6c6e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.088599] ==================================================================
[ 35.110998] cgroup: Unknown subsys name 'hugetlb'
[ 35.112079] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:33:10 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880081975f0
R8 =0000000000000029 R9 =0000000000000035 R10=ffffffff8234ae1b R11=000000000000000a
R12=0000000000000020 R13=fffffbfff0e70397 R14=fffffbfff0e7034e R15=dffffc0000000000
RIP=ffffffff823640b0 RFL=00000002 [-------] 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=00007ffccd6fdff8 CR3=000000001707a000 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 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f7251cc6076a8ac
YMM04=0000000000000000 0000000000000000 00007f18875c1400 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000000000 000000c00031c188
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c0003527c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00000c4a0 000000c0005642c0
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c0002970e0 000000c000296f30
YMM14=0000000000000000 0000000000000000 000000c000297020 000000c000296f90
YMM15=0000000000000000 0000000000000000 000000c0002970b0 000000c000297050
info registers vcpu 1
RAX=0000000000000000 RBX=0000000000000014 RCX=0000000000465f2d RDX=0000000000000000
RSI=0000000000000000 RDI=000000c00003ff18 RBP=000000c00003ffa0 RSP=000000c00003ff18
R8 =000000081b9d859d R9 =00007ffde3fe4080 R10=00007ffde3fe4090 R11=0000000000000212
R12=0000000000438880 R13=0000000000000009 R14=000080c000328000 R15=000080c00032ffff
RIP=0000000000465f32 RFL=00000212 [----A--] CPL=3 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 00000000 00000000
CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA]
SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 000000c000030090 00000000 00000000
GS =0000 0000000000000000 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=00007fb4ce28a000 CR3=000000001707a000 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 410a33c000000000
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