Out of memory (oom_kill_allocating_task): Killed process 263 (syz-fuzzer) total-vm:1170056kB, anon-rss:228204kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:788kB oom_score_adj:0
------------[ cut here ]------------
kernfs_put: syz0/memory.events: released with incorrect active_ref 0
WARNING: CPU: 0 PID: 5937 at fs/kernfs/dir.c:531 kernfs_put.part.0+0x433/0x540
Modules linked in:
CPU: 0 PID: 5937 Comm: kworker/0:0 Not tainted 5.19.0-rc4-next-20220704 #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 9c 6c 02 <0f> 0b e9 b9 fc ff ff 48 89 ef e8 0e b3 d9 ff e9 c1 fd ff ff e8 04
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5937 at fs/kernfs/dir.c:504 kernfs_get.part.0+0x69/0x80
Modules linked in:
CPU: 0 PID: 5937 Comm: kworker/0:0 Not tainted 5.19.0-rc4-next-20220704 #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_get.part.0+0x69/0x80
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
RSP: 0018:ffff88806ce09c80 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff88801bf80740 RCX: 0000000000000100
RDX: ffff88804336b580 RSI: ffffffff819de5c9 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: 1ffffffff0a01e40 R14: ffff88801bf80740 R15: ffff888044808490
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000465f03 CR3: 000000000d920000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
Call Trace:
kernfs_get+0x1b/0x30
kernfs_notify+0x180/0x350
cgroup_file_notify+0xf5/0x1a0
call_timer_fn+0x17d/0x5f0
__run_timers.part.0+0x65e/0xa50
run_timer_softirq+0xae/0x1a0
__do_softirq+0x1c8/0x8cc
__irq_exit_rcu+0x113/0x170
irq_exit_rcu+0x5/0x20
sysvec_apic_timer_interrupt+0x8e/0xc0
asm_sysvec_apic_timer_interrupt+0x1b/0x20
RIP: 0010:console_emit_next_record.constprop.0+0x4c8/0x800
Code: 83 e2 07 38 d0 7f 08 84 c0 0f 85 d5 02 00 00 88 5d 00 e8 db 3e 00 00 31 ff 4c 89 f6 e8 01 5e 19 00 4d 85 f6 0f 85 76 01 00 00 03 61 19 00 48 b8 00 00 00 00 00 fc ff df 48 03 04 24 48 c7 00
RSP: 0018:ffff88801be87630 EFLAGS: 00000206
RAX: 00000000001e3e1d RBX: 0000000000000000 RCX: ffffffff8128d13f
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88801be877d8 R08: 0000000000000001 R09: ffffffff86a5e7c7
R10: fffffbfff0d4bcf8 R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff86daaba0 R14: 0000000000000200 R15: ffffffff8549fd38
console_unlock+0x36c/0x590
vprintk_emit+0x1b9/0x550
vprintk+0x80/0x90
_printk+0xba/0xed
show_opcodes.cold+0x1c/0x21
show_iret_regs+0xd/0x33
__show_regs+0x1e/0x60
show_regs+0x2f/0x40
__warn+0xe2/0x190
report_bug+0x1bc/0x210
handle_bug+0x3c/0x60
exc_invalid_op+0x14/0x40
asm_exc_invalid_op+0x1b/0x20
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 9c 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:ffff88801be87bd8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff88804336b580 RSI: ffffffff812bd348 RDI: ffffed10037d0f6d
RBP: ffff88801bf80778 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff88801bf80740
R13: ffff88800db04e80 R14: 0000000000000000 R15: ffff88801b25f3c0
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: 1982003
hardirqs last enabled at (1982002): [] _raw_spin_unlock_irq+0x1f/0x40
hardirqs last disabled at (1982003): [] _raw_spin_lock_irqsave+0x4e/0x50
softirqs last enabled at (1981942): [] __irq_exit_rcu+0x113/0x170
softirqs last disabled at (1981983): [] __irq_exit_rcu+0x113/0x170
---[ end trace 0000000000000000 ]---
RSP: 0018:ffff88801be87bd8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff88804336b580 RSI: ffffffff812bd348 RDI: ffffed10037d0f6d
RBP: ffff88801bf80778 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: ffff88801bf80740
R13: ffff88800db04e80 R14: 0000000000000000 R15: ffff88801b25f3c0
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000465f03 CR3: 000000000d920000 CR4: 0000000000350ef0
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: 1982885
hardirqs last enabled at (1982895): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (1982906): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (1982044): [] __irq_exit_rcu+0x113/0x170
softirqs last disabled at (1981983): [] __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 ffff88801bf807c0 by task kworker/0:0/5937
CPU: 0 PID: 5937 Comm: kworker/0:0 Tainted: G W 5.19.0-rc4-next-20220704 #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 294:
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
cgroup_addrm_files+0x3e2/0x9d0
css_populate_dir+0x19b/0x450
cgroup_apply_control_enable+0x3ae/0xa40
cgroup_mkdir+0x824/0x11f0
kernfs_iop_mkdir+0x149/0x1d0
vfs_mkdir+0x417/0x6a0
do_mkdirat+0x17b/0x2e0
__x64_sys_mkdir+0xf2/0x140
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
Freed by task 5937:
kasan_save_stack+0x1e/0x40
kasan_set_track+0x21/0x30
kasan_set_free_info+0x20/0x30
__kasan_slab_free+0x108/0x190
kmem_cache_free+0xfb/0x600
kernfs_put.part.0+0x2c7/0x540
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
The buggy address belongs to the object at ffff88801bf80740
which belongs to the cache kernfs_node_cache of size 168
The buggy address is located 128 bytes inside of
168-byte region [ffff88801bf80740, ffff88801bf807e8)
The buggy address belongs to the physical page:
page:00000000ee883379 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1bf80
flags: 0x100000000000200(slab|node=0|zone=1)
raw: 0100000000000200 0000000000000000 dead000000000122 ffff8880080358c0
raw: 0000000000000000 0000000000110011 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88801bf80680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88801bf80700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
>ffff88801bf80780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
^
ffff88801bf80800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00
ffff88801bf80880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
==================================================================
syz-executor.4: page allocation failure: order:0, mode:0xcc0(GFP_KERNEL), nodemask=(null),cpuset=syz4,mems_allowed=0
CPU: 1 PID: 10685 Comm: syz-executor.4 Tainted: G B W 5.19.0-rc4-next-20220704 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
dump_stack_lvl+0x8b/0xb3
warn_alloc.cold+0x95/0x18a
__alloc_pages_slowpath.constprop.0+0x1bf1/0x2180
__alloc_pages+0x421/0x4f0
alloc_pages+0x1a0/0x2f0
relay_open_buf.part.0+0x2a4/0xc00
relay_open+0x544/0xa50
do_blk_trace_setup+0x4bc/0xb60
__blk_trace_setup+0xca/0x180
blk_trace_setup+0x43/0x60
sg_ioctl+0x6a8/0x2820
__x64_sys_ioctl+0x196/0x210
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f96f9867b19
Code: Unable to access opcode bytes at RIP 0x7f96f9867aef.
RSP: 002b:00007f96f6ddd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f96f997af60 RCX: 00007f96f9867b19
RDX: 0000000020000000 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007f96f98c1f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc47f19aaf R14: 00007f96f6ddd300 R15: 0000000000022000
Mem-Info:
active_anon:20971 inactive_anon:45485 isolated_anon:0
active_file:20 inactive_file:19 isolated_file:0
unevictable:0 dirty:0 writeback:0
slab_reclaimable:9846 slab_unreclaimable:59788
mapped:69634 shmem:109 pagetables:1308 bounce:0
kernel_misc_reclaimable:0
free:2207 free_pcp:218 free_cma:0
Node 0 active_anon:83884kB inactive_anon:181940kB active_file:80kB inactive_file:76kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:278536kB dirty:0kB writeback:0kB shmem:436kB writeback_tmp:0kB kernel_stack:4096kB pagetables:5232kB all_unreclaimable? yes
Node 0 DMA free:6480kB boost:0kB min:44kB low:56kB high:68kB reserved_highatomic:0KB active_anon:0kB inactive_anon:4kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 1615 1615 1615
Node 0 DMA32 free:2348kB boost:2048kB min:7168kB low:8820kB high:10472kB reserved_highatomic:0KB active_anon:83884kB inactive_anon:182104kB active_file:80kB inactive_file:124kB unevictable:0kB writepending:0kB present:2080640kB managed:1658288kB mlocked:0kB bounce:0kB free_pcp:872kB local_pcp:492kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 2*4kB (UM) 1*8kB (M) 2*16kB (UM) 1*32kB (M) 2*64kB (UM) 1*128kB (M) 2*256kB (UM) 1*512kB (M) 1*1024kB (M) 0*2048kB 1*4096kB (M) = 6480kB
Node 0 DMA32: 249*4kB (UME) 105*8kB (M) 24*16kB (UME) 4*32kB (UM) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 2348kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
151 total pagecache pages
0 pages in swap cache
Free swap = 0kB
Total swap = 0kB
524158 pages RAM
0 pages HighMem/MovableOnly
105746 pages reserved
BUG: kernel NULL pointer dereference, address: 0000000000000018
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 10741 Comm: systemd-rfkill Tainted: G B W 5.19.0-rc4-next-20220704 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:qlist_free_all+0xd3/0x190
Code: 03 05 a1 82 7b 03 48 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 02 b8 00 00 00 00 48 0f 44 d0 <4c> 8b 72 18 e9 50 ff ff ff 49 83 7e 48 00 0f 85 68 ff ff ff 41 f7
RSP: 0018:ffff88801f1ef820 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88804582837a RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff81770c31
RBP: 0000000000000000 R08: ffff88804582837a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff88801f1ef860 R14: 0000000000000000 R15: ffff88801bf80740
FS: 00007f4c1c508900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 000000001bbce000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
Call Trace:
kasan_quarantine_reduce+0x180/0x200
__kasan_slab_alloc+0x78/0x80
kmem_cache_alloc+0x1b1/0x490
__create_object.isra.0+0x3d/0xc10
kmem_cache_alloc_bulk+0x3fa/0x790
mas_alloc_nodes+0x2a6/0x6a0
mas_preallocate+0xff/0x2d0
__vma_adjust+0x1f1/0x1890
__split_vma+0x2a1/0x540
split_vma+0x9f/0xe0
mprotect_fixup+0x70c/0x8c0
do_mprotect_pkey+0x709/0xa80
__x64_sys_mprotect+0x74/0xb0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f4c1d178e27
Code: 44 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d 31 03 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 11 03 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffd3a488328 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f4c1c91d2f0 RCX: 00007f4c1d178e27
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007f4c1c5ce000
RBP: 00007ffd3a488440 R08: 0000000000000000 R09: 00007f4c1cd06958
R10: 00007f4c1c5cec40 R11: 0000000000000206 R12: 0000000000000007
R13: 0000004400000007 R14: 00007f4c1c5afb70 R15: 00007f4c1c91d2f0
Modules linked in:
CR2: 0000000000000018
---[ end trace 0000000000000000 ]---
RIP: 0010:qlist_free_all+0xd3/0x190
Code: 03 05 a1 82 7b 03 48 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 02 b8 00 00 00 00 48 0f 44 d0 <4c> 8b 72 18 e9 50 ff ff ff 49 83 7e 48 00 0f 85 68 ff ff ff 41 f7
RSP: 0018:ffff88801f1ef820 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88804582837a RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff81770c31
RBP: 0000000000000000 R08: ffff88804582837a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff88801f1ef860 R14: 0000000000000000 R15: ffff88801bf80740
FS: 00007f4c1c508900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 000000001bbce000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 83 e2 07 and $0x7,%edx
3: 38 d0 cmp %dl,%al
5: 7f 08 jg 0xf
7: 84 c0 test %al,%al
9: 0f 85 d5 02 00 00 jne 0x2e4
f: 88 5d 00 mov %bl,0x0(%rbp)
12: e8 db 3e 00 00 callq 0x3ef2
17: 31 ff xor %edi,%edi
19: 4c 89 f6 mov %r14,%rsi
1c: e8 01 5e 19 00 callq 0x195e22
21: 4d 85 f6 test %r14,%r14
24: 0f 85 76 01 00 00 jne 0x1a0
* 2a: e8 03 61 19 00 callq 0x196132 <-- trapping instruction
2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
36: fc ff df
39: 48 03 04 24 add (%rsp),%rax
3d: 48 rex.W
3e: c7 .byte 0xc7