Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:47592' (ECDSA) to the list of known hosts.
2021/12/06 11:23:02 fuzzer started
2021/12/06 11:23:02 dialing manager at localhost:35719
2021/12/06 11:23:02 checking machine...
2021/12/06 11:23:02 checking revisions...
syzkaller login: [ 36.516183] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:23:02 testing simple program...
[ 36.559488] cgroup: Unknown subsys name 'net'
[ 36.561584] cgroup: Unknown subsys name 'net_prio'
[ 36.563375] cgroup: Unknown subsys name 'devices'
[ 36.568277] cgroup: Unknown subsys name 'blkio'
[ 36.600574]
[ 36.600848] =========================
[ 36.601314] WARNING: held lock freed!
[ 36.601860] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.602523] -------------------------
[ 36.602987] kworker/0:1/10 is freeing memory ffff88800ddd2400-ffff88800ddd25ff, with a lock still held there!
[ 36.604306] ffff88800ddd2548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.606718] 3 locks held by kworker/0:1/10:
[ 36.607900] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.609781] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.611322] #2: ffff88800ddd2548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.612775]
[ 36.612775] stack backtrace:
[ 36.613323] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.614314] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.615749] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.616524] Call Trace:
[ 36.616841]
[ 36.617128] dump_stack_lvl+0x8b/0xb3
[ 36.617585] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.618275] ? kernfs_put.part.0+0x334/0x540
[ 36.618859] kfree+0xb3/0x5a0
[ 36.619255] ? kmem_cache_free+0xce/0x640
[ 36.619776] kernfs_put.part.0+0x334/0x540
[ 36.620966] kernfs_put+0x42/0x50
[ 36.621912] __kernfs_remove+0x7ce/0xb00
[ 36.622977] ? lock_is_held_type+0xd7/0x130
[ 36.624171] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.625556] ? down_write+0xde/0x150
[ 36.626538] ? down_write_killable_nested+0x180/0x180
[ 36.627941] kernfs_destroy_root+0x89/0xb0
[ 36.629192] css_free_rwork_fn+0xa28/0xf40
[ 36.630294] process_one_work+0xa30/0x1710
[ 36.631406] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.632684] ? rwlock_bug.part.0+0x90/0x90
[ 36.633823] ? _raw_spin_lock_irq+0x41/0x50
[ 36.634959] worker_thread+0x62a/0x13e0
[ 36.635927] ? process_one_work+0x1710/0x1710
[ 36.637142] kthread+0x40c/0x500
[ 36.638031] ? set_kthread_struct+0x130/0x130
[ 36.639250] ret_from_fork+0x22/0x30
[ 36.640360]
[ 36.641064] ==================================================================
[ 36.643017] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.647462] Read of size 8 at addr ffff88800ddd2540 by task kworker/0:1/10
[ 36.649417]
[ 36.649827] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.651962] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.655348] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.656911] Call Trace:
[ 36.657547]
[ 36.658117] dump_stack_lvl+0x8b/0xb3
[ 36.659135] print_address_description.constprop.0+0x1f/0x180
[ 36.661059] ? up_write+0x3ac/0x460
[ 36.661570] ? up_write+0x3ac/0x460
[ 36.662028] kasan_report.cold+0x7f/0x11b
[ 36.662537] ? up_write+0x3ac/0x460
[ 36.662992] up_write+0x3ac/0x460
[ 36.663448] css_free_rwork_fn+0xa28/0xf40
[ 36.663975] process_one_work+0xa30/0x1710
[ 36.664575] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.665157] ? rwlock_bug.part.0+0x90/0x90
[ 36.665826] ? _raw_spin_lock_irq+0x41/0x50
[ 36.666397] worker_thread+0x62a/0x13e0
[ 36.666902] ? process_one_work+0x1710/0x1710
[ 36.667504] kthread+0x40c/0x500
[ 36.667922] ? set_kthread_struct+0x130/0x130
[ 36.668499] ret_from_fork+0x22/0x30
[ 36.668974]
[ 36.669288]
[ 36.669489] Allocated by task 281:
[ 36.669916] kasan_save_stack+0x1e/0x40
[ 36.670426] __kasan_kmalloc+0x81/0xa0
[ 36.670862] kernfs_create_root+0x4c/0x410
[ 36.671333] cgroup_setup_root+0x346/0xb60
[ 36.671805] cgroup1_get_tree+0xc1b/0x1370
[ 36.672375] vfs_get_tree+0x8e/0x2f0
[ 36.672800] path_mount+0x131b/0x1f80
[ 36.673259] __x64_sys_mount+0x27e/0x300
[ 36.673720] do_syscall_64+0x3b/0x90
[ 36.674133] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.674708]
[ 36.674888] Freed by task 10:
[ 36.675258] kasan_save_stack+0x1e/0x40
[ 36.675697] kasan_set_track+0x21/0x30
[ 36.676222] kasan_set_free_info+0x20/0x30
[ 36.676721] __kasan_slab_free+0x108/0x170
[ 36.677223] kfree+0xc5/0x5a0
[ 36.677569] kernfs_put.part.0+0x334/0x540
[ 36.678039] kernfs_put+0x42/0x50
[ 36.678453] __kernfs_remove+0x7ce/0xb00
[ 36.678902] kernfs_destroy_root+0x89/0xb0
[ 36.679370] css_free_rwork_fn+0xa28/0xf40
[ 36.679843] process_one_work+0xa30/0x1710
[ 36.680560] worker_thread+0x62a/0x13e0
[ 36.681002] kthread+0x40c/0x500
[ 36.681421] ret_from_fork+0x22/0x30
[ 36.681836]
[ 36.682016] The buggy address belongs to the object at ffff88800ddd2400
[ 36.682016] which belongs to the cache kmalloc-512 of size 512
[ 36.683388] The buggy address is located 320 bytes inside of
[ 36.683388] 512-byte region [ffff88800ddd2400, ffff88800ddd2600)
[ 36.684793] The buggy address belongs to the page:
[ 36.685331] page:00000000157c06ae refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ddd0c00 pfn:0xddd0
[ 36.686493] head:00000000157c06ae order:2 compound_mapcount:0 compound_pincount:0
[ 36.687324] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.687984] raw: 0100000000010200 ffffea0000395800 dead000000000002 ffff888007841c80
[ 36.690044] raw: ffff88800ddd0c00 000000008010000f 00000001ffffffff 0000000000000000
[ 36.691000] page dumped because: kasan: bad access detected
[ 36.691724]
[ 36.691925] Memory state around the buggy address:
[ 36.692733] ffff88800ddd2400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.693655] ffff88800ddd2480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.694589] >ffff88800ddd2500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.695399] ^
[ 36.696000] ffff88800ddd2580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.696855] ffff88800ddd2600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.697709] ==================================================================
[ 36.721541] cgroup: Unknown subsys name 'hugetlb'
[ 36.722361] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:23:03 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888008197438
R8 =000000000000003b R9 =000000000000003a 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=00007f72a37d3728 CR3=000000001816e000 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=00001f80
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 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 ffffffffffffffff ffffffffffffffff
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
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=ffffffff84078af0 RBX=ffff8880081a9ac0 RCX=ffffffff8405abe1 RDX=ffffed100d9e7143
RSI=0000000000000001 RDI=ffffffff84078eaf RBP=0000000000000001 RSP=ffff888008207e78
R8 =0000000000000000 R9 =ffff88806cf38a13 R10=ffffed100d9e7142 R11=0000000000000001
R12=ffffed1001035358 R13=ffffffff858bd8d0 R14=0000000000000000 R15=dffffc0000000000
RIP=ffffffff84078afb RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1
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=000055d35e41c900 CR3=0000000018554000 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=00001f80
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 000000ffff000000 0000000000000000
YMM02=0000000000000000 0000000000000000 000000ffff000000 0000000000000000
YMM03=0000000000000000 0000000000000000 5542205d37313033 34362e3633202020
YMM04=0000000000000000 0000000000000000 6d65712e746c6975 626572702d623039
YMM05=0000000000000000 0000000000000000 312e312d6c657220 534f4942202c2936
YMM06=0000000000000000 0000000000000000 3469282043502064 7261646e61745320
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 7473790000303634 78302f6361337830
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