Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:5870' (ECDSA) to the list of known hosts.
2021/12/06 11:36:45 fuzzer started
2021/12/06 11:36:46 dialing manager at localhost:35719
2021/12/06 11:36:46 checking machine...
2021/12/06 11:36:46 checking revisions...
syzkaller login: [ 28.740906] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:36:46 testing simple program...
[ 28.810983] cgroup: Unknown subsys name 'net'
[ 28.813341] cgroup: Unknown subsys name 'net_prio'
[ 28.814778] cgroup: Unknown subsys name 'devices'
[ 28.816751] cgroup: Unknown subsys name 'blkio'
[ 28.839331]
[ 28.839685] =========================
[ 28.840370] WARNING: held lock freed!
[ 28.841103] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 28.842046] -------------------------
[ 28.842860] kworker/0:1/10 is freeing memory ffff88800d386800-ffff88800d3869ff, with a lock still held there!
[ 28.845457] ffff88800d386948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 28.847205] 3 locks held by kworker/0:1/10:
[ 28.848046] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 28.850123] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 28.852434] #2: ffff88800d386948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 28.854286]
[ 28.854286] stack backtrace:
[ 28.855154] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 28.856680] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 28.859092] Workqueue: cgroup_destroy css_free_rwork_fn
[ 28.860195] Call Trace:
[ 28.860757]
[ 28.861208] dump_stack_lvl+0x8b/0xb3
[ 28.861984] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 28.863040] ? kernfs_put.part.0+0x334/0x540
[ 28.863949] kfree+0xb3/0x5a0
[ 28.864604] ? kmem_cache_free+0xce/0x640
[ 28.865443] kernfs_put.part.0+0x334/0x540
[ 28.866845] kernfs_put+0x42/0x50
[ 28.867537] __kernfs_remove+0x7ce/0xb00
[ 28.868347] ? lock_is_held_type+0xd7/0x130
[ 28.869238] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 28.870300] ? down_write+0xde/0x150
[ 28.871059] ? down_write_killable_nested+0x180/0x180
[ 28.872110] kernfs_destroy_root+0x89/0xb0
[ 28.872990] css_free_rwork_fn+0xa28/0xf40
[ 28.873860] process_one_work+0xa30/0x1710
[ 28.874723] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 28.875698] ? rwlock_bug.part.0+0x90/0x90
[ 28.876591] ? _raw_spin_lock_irq+0x41/0x50
[ 28.877477] worker_thread+0x62a/0x13e0
[ 28.878292] ? process_one_work+0x1710/0x1710
[ 28.879216] kthread+0x40c/0x500
[ 28.879998] ? set_kthread_struct+0x130/0x130
[ 28.880972] ret_from_fork+0x22/0x30
[ 28.881750]
[ 28.882424] ==================================================================
[ 28.883894] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 28.885160] Read of size 8 at addr ffff88800d386940 by task kworker/0:1/10
[ 28.886579]
[ 28.886924] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 28.888542] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 28.890876] Workqueue: cgroup_destroy css_free_rwork_fn
[ 28.891975] Call Trace:
[ 28.892509]
[ 28.893003] dump_stack_lvl+0x8b/0xb3
[ 28.893822] print_address_description.constprop.0+0x1f/0x180
[ 28.895013] ? up_write+0x3ac/0x460
[ 28.895769] ? up_write+0x3ac/0x460
[ 28.896521] kasan_report.cold+0x7f/0x11b
[ 28.897485] ? up_write+0x3ac/0x460
[ 28.898166] up_write+0x3ac/0x460
[ 28.898839] css_free_rwork_fn+0xa28/0xf40
[ 28.899716] process_one_work+0xa30/0x1710
[ 28.900745] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 28.901666] ? rwlock_bug.part.0+0x90/0x90
[ 28.902469] ? _raw_spin_lock_irq+0x41/0x50
[ 28.903321] worker_thread+0x62a/0x13e0
[ 28.904190] ? process_one_work+0x1710/0x1710
[ 28.905061] kthread+0x40c/0x500
[ 28.905740] ? set_kthread_struct+0x130/0x130
[ 28.906650] ret_from_fork+0x22/0x30
[ 28.907427]
[ 28.907903]
[ 28.908249] Allocated by task 279:
[ 28.909008] kasan_save_stack+0x1e/0x40
[ 28.909823] __kasan_kmalloc+0x81/0xa0
[ 28.910635] kernfs_create_root+0x4c/0x410
[ 28.911502] cgroup_setup_root+0x346/0xb60
[ 28.912365] cgroup1_get_tree+0xc1b/0x1370
[ 28.913263] vfs_get_tree+0x8e/0x2f0
[ 28.914043] path_mount+0x131b/0x1f80
[ 28.914823] __x64_sys_mount+0x27e/0x300
[ 28.915676] do_syscall_64+0x3b/0x90
[ 28.916453] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 28.917527]
[ 28.917865] Freed by task 10:
[ 28.918504] kasan_save_stack+0x1e/0x40
[ 28.920211] kasan_set_track+0x21/0x30
[ 28.921015] kasan_set_free_info+0x20/0x30
[ 28.922262] __kasan_slab_free+0x108/0x170
[ 28.923140] kfree+0xc5/0x5a0
[ 28.923778] kernfs_put.part.0+0x334/0x540
[ 28.924683] kernfs_put+0x42/0x50
[ 28.925414] __kernfs_remove+0x7ce/0xb00
[ 28.926242] kernfs_destroy_root+0x89/0xb0
[ 28.927731] css_free_rwork_fn+0xa28/0xf40
[ 28.928638] process_one_work+0xa30/0x1710
[ 28.929544] worker_thread+0x62a/0x13e0
[ 28.930370] kthread+0x40c/0x500
[ 28.931085] ret_from_fork+0x22/0x30
[ 28.931878]
[ 28.932231] The buggy address belongs to the object at ffff88800d386800
[ 28.932231] which belongs to the cache kmalloc-512 of size 512
[ 28.934844] The buggy address is located 320 bytes inside of
[ 28.934844] 512-byte region [ffff88800d386800, ffff88800d386a00)
[ 28.937370] The buggy address belongs to the page:
[ 28.938401] page:00000000f95fa2a9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd384
[ 28.940332] head:00000000f95fa2a9 order:2 compound_mapcount:0 compound_pincount:0
[ 28.941883] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 28.943091] raw: 0100000000010200 ffffea0000350000 dead000000000002 ffff888007841c80
[ 28.944689] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 28.946348] page dumped because: kasan: bad access detected
[ 28.947416]
[ 28.947731] Memory state around the buggy address:
[ 28.948662] ffff88800d386800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.950116] ffff88800d386880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.951585] >ffff88800d386900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.953072] ^
[ 28.954144] ffff88800d386980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.955613] ffff88800d386a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 28.957130] ==================================================================
[ 29.018648] cgroup: Unknown subsys name 'hugetlb'
[ 29.019463] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:36:46 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880081975f0
R8 =0000000000000071 R9 =0000000000000020 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=00007ffeb7d86c28 CR3=00000000184e2000 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 3f73bf5a1cc809e4
YMM04=0000000000000000 0000000000000000 00007fdd08291000 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000000000 000000c000320478
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c0005e6fc0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000ea76c0 00000000004643c6
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00009d0e0 000000c0004142c0
YMM11=0000000000000000 0000000000000000 0000000001432f20 0000000000eadd40
YMM12=0000000000000000 0000000000000000 0000000001410780 0000000000eadd40
YMM13=0000000000000000 0000000000000000 000000c00011e1e0 000000c00011e1b0
YMM14=0000000000000000 0000000000000000 000000c00011e240 000000c00011e210
YMM15=0000000000000000 0000000000000000 000000c0001206e0 000000c00011e270
info registers vcpu 1
RAX=0000000080000000 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000000000000
RSI=ffff88800f918000 RDI=0000000000000003 RBP=ffff88806cf2a740 RSP=ffff888017e8fc08
R8 =0000000000000000 R9 =0000000000000001 R10=ffffffff8149e0ed R11=0000000000000001
R12=0000000000000246 R13=ffff88806cf2a7c0 R14=ffff888017e8fde0 R15=ffff88800f918000
RIP=ffffffff814316a7 RFL=00000046 [---Z-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 000000c000030090 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=00007fede97b9270 CR3=00000000184e2000 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 bfe62e42fefa39ef
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