==================================================================
BUG: KASAN: use-after-free in do_raw_write_seqcount_begin include/linux/seqlock.h:469 [inline]
BUG: KASAN: use-after-free in do_write_seqcount_begin_nested include/linux/seqlock.h:515 [inline]
BUG: KASAN: use-after-free in do_write_seqcount_begin include/linux/seqlock.h:541 [inline]
BUG: KASAN: use-after-free in psi_account_irqtime+0x4d9/0x520 kernel/sched/psi.c:1024
Read of size 4 at addr ffff8881b9840020 by task syz-executor.5/5170
CPU: 0 PID: 5170 Comm: syz-executor.5 Not tainted 6.5.0-next-20230908-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:475
kasan_report+0xda/0x110 mm/kasan/report.c:588
do_raw_write_seqcount_begin include/linux/seqlock.h:469 [inline]
do_write_seqcount_begin_nested include/linux/seqlock.h:515 [inline]
do_write_seqcount_begin include/linux/seqlock.h:541 [inline]
psi_account_irqtime+0x4d9/0x520 kernel/sched/psi.c:1024
update_rq_clock_task kernel/sched/core.c:725 [inline]
update_rq_clock kernel/sched/core.c:769 [inline]
update_rq_clock+0x24a/0xb20 kernel/sched/core.c:750
scheduler_tick+0xee/0x650 kernel/sched/core.c:5654
update_process_times+0x19f/0x220 kernel/time/timer.c:2076
tick_sched_handle+0x8e/0x170 kernel/time/tick-sched.c:254
tick_sched_timer+0xe9/0x110 kernel/time/tick-sched.c:1492
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x647/0xc10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
__sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:memmove+0x28/0x1b0 arch/x86/lib/memmove_64.S:44
Code: c3 90 f3 0f 1e fa 48 89 f8 48 39 fe 7d 0f 49 89 f0 49 01 d0 49 39 f8 0f 8f b5 00 00 00 48 83 fa 20 0f 82 01 01 00 00 48 89 d1 a4 c3 48 81 fa a8 02 00 00 72 05 40 38 fe 74 47 48 83 ea 20 48
RSP: 0018:ffffc900047aef18 EFLAGS: 00010286
RAX: ffff88806546bfb4 RBX: 0000000000000002 RCX: ffffffffffbead94
RDX: ffffffffffffffe0 RSI: ffff8880658811f0 RDI: ffff888065881200
RBP: 0000000000000020 R08: ffff88806546bf84 R09: 0000766972705f73
R10: 667265736965722e R11: 0000766972705f73 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88806546bfa4 R15: 0000000000000010
leaf_paste_entries+0x43c/0x920 fs/reiserfs/lbalance.c:1377
balance_leaf_finish_node_paste_dirent fs/reiserfs/do_balan.c:1295 [inline]
balance_leaf_finish_node_paste fs/reiserfs/do_balan.c:1321 [inline]
balance_leaf_finish_node fs/reiserfs/do_balan.c:1364 [inline]
balance_leaf+0x9476/0xcd90 fs/reiserfs/do_balan.c:1452
do_balance+0x337/0x840 fs/reiserfs/do_balan.c:1888
reiserfs_paste_into_item+0x62a/0x7c0 fs/reiserfs/stree.c:2157
reiserfs_add_entry+0x936/0xd20 fs/reiserfs/namei.c:565
reiserfs_mkdir+0x68a/0x9a0 fs/reiserfs/namei.c:860
xattr_mkdir fs/reiserfs/xattr.c:77 [inline]
create_privroot fs/reiserfs/xattr.c:891 [inline]
reiserfs_xattr_init+0x57f/0xbb0 fs/reiserfs/xattr.c:1007
reiserfs_fill_super+0x2139/0x3150 fs/reiserfs/super.c:2175
mount_bdev+0x1f3/0x2e0 fs/super.c:1629
legacy_get_tree+0x109/0x220 fs/fs_context.c:638
vfs_get_tree+0x8c/0x370 fs/super.c:1750
do_new_mount fs/namespace.c:3335 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3662
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount fs/namespace.c:3861 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6e6ec7e1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc2e3c9f08 EFLAGS: 00000246
ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc2e3c9fa0 RCX: 00007f6e6ec7e1ea
RDX: 0000000020001100 RSI: 0000000020000040 RDI: 00007ffc2e3c9f60
RBP: 0000000020001100 R08: 00007ffc2e3c9fa0 R09: 0000000000000080
R10: 0000000000000080 R11: 0000000000000246 R12: 0000000020000040
R13: 00007ffc2e3c9f60 R14: 00000000000010fa R15: 0000000020000000
The buggy address belongs to the physical page:
page:ffffea0006e61000 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b9840
flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 057ff00000000000 ffffea0006e61008 ffffea0006e61008 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)
Memory state around the buggy address:
ffff8881b983ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881b983ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881b9840000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8881b9840080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881b9840100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
general protection fault, probably for non-canonical address 0xdffffc0020008005: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x0000000100040028-0x000000010004002f]
CPU: 0 PID: 5170 Comm: syz-executor.5 Tainted: G B 6.5.0-next-20230908-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:psi_account_irqtime+0x1a9/0x520 kernel/sched/psi.c:1019
Code: 00 00 49 c7 c4 50 4a ce 8e 49 be 00 00 00 00 00 fc ff df 49 c1 ec 03 4b 8d 04 34 48 89 04 24 49 8d 7f 08 48 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 06 0f 8e a8 02 00 00 41 80 7f 08 00 0f 84
RSP: 0018:ffffc90000007c90 EFLAGS: 00010006
RAX: 0000000020008005 RBX: ffff8881b9840028 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000100040028
RBP: 0000000000001d94 R08: 0000000000000000 R09: fffffbfff1d9c29a
R10: ffffffff8ece14d7 R11: 3d3d3d3d3d3d3d3d R12: ffff8881b9840020
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000100040020
FS: 0000555555b1b480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555974788 CR3: 0000000016762000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
update_rq_clock_task kernel/sched/core.c:725 [inline]
update_rq_clock kernel/sched/core.c:769 [inline]
update_rq_clock+0x24a/0xb20 kernel/sched/core.c:750
scheduler_tick+0xee/0x650 kernel/sched/core.c:5654
update_process_times+0x19f/0x220 kernel/time/timer.c:2076
tick_sched_handle+0x8e/0x170 kernel/time/tick-sched.c:254
tick_sched_timer+0xe9/0x110 kernel/time/tick-sched.c:1492
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x647/0xc10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
__sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:memmove+0x28/0x1b0 arch/x86/lib/memmove_64.S:44
Code: c3 90 f3 0f 1e fa 48 89 f8 48 39 fe 7d 0f 49 89 f0 49 01 d0 49 39 f8 0f 8f b5 00 00 00 48 83 fa 20 0f 82 01 01 00 00 48 89 d1 a4 c3 48 81 fa a8 02 00 00 72 05 40 38 fe 74 47 48 83 ea 20 48
RSP: 0018:ffffc900047aef18 EFLAGS: 00010286
RAX: ffff88806546bfb4 RBX: 0000000000000002 RCX: ffffffffffbead94
RDX: ffffffffffffffe0 RSI: ffff8880658811f0 RDI: ffff888065881200
RBP: 0000000000000020 R08: ffff88806546bf84 R09: 0000766972705f73
R10: 667265736965722e R11: 0000766972705f73 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88806546bfa4 R15: 0000000000000010
leaf_paste_entries+0x43c/0x920 fs/reiserfs/lbalance.c:1377
balance_leaf_finish_node_paste_dirent fs/reiserfs/do_balan.c:1295 [inline]
balance_leaf_finish_node_paste fs/reiserfs/do_balan.c:1321 [inline]
balance_leaf_finish_node fs/reiserfs/do_balan.c:1364 [inline]
balance_leaf+0x9476/0xcd90 fs/reiserfs/do_balan.c:1452
do_balance+0x337/0x840 fs/reiserfs/do_balan.c:1888
reiserfs_paste_into_item+0x62a/0x7c0 fs/reiserfs/stree.c:2157
reiserfs_add_entry+0x936/0xd20 fs/reiserfs/namei.c:565
reiserfs_mkdir+0x68a/0x9a0 fs/reiserfs/namei.c:860
xattr_mkdir fs/reiserfs/xattr.c:77 [inline]
create_privroot fs/reiserfs/xattr.c:891 [inline]
reiserfs_xattr_init+0x57f/0xbb0 fs/reiserfs/xattr.c:1007
reiserfs_fill_super+0x2139/0x3150 fs/reiserfs/super.c:2175
mount_bdev+0x1f3/0x2e0 fs/super.c:1629
legacy_get_tree+0x109/0x220 fs/fs_context.c:638
vfs_get_tree+0x8c/0x370 fs/super.c:1750
do_new_mount fs/namespace.c:3335 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3662
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount fs/namespace.c:3861 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6e6ec7e1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc2e3c9f08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc2e3c9fa0 RCX: 00007f6e6ec7e1ea
RDX: 0000000020001100 RSI: 0000000020000040 RDI: 00007ffc2e3c9f60
RBP: 0000000020001100 R08: 00007ffc2e3c9fa0 R09: 0000000000000080
R10: 0000000000000080 R11: 0000000000000246 R12: 0000000020000040
R13: 00007ffc2e3c9f60 R14: 00000000000010fa R15: 0000000020000000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:psi_account_irqtime+0x1a9/0x520 kernel/sched/psi.c:1019
Code: 00 00 49 c7 c4 50 4a ce 8e 49 be 00 00 00 00 00 fc ff df 49 c1 ec 03 4b 8d 04 34 48 89 04 24 49 8d 7f 08 48 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 06 0f 8e a8 02 00 00 41 80 7f 08 00 0f 84
RSP: 0018:ffffc90000007c90 EFLAGS: 00010006
RAX: 0000000020008005 RBX: ffff8881b9840028 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000100040028
RBP: 0000000000001d94 R08: 0000000000000000 R09: fffffbfff1d9c29a
R10: ffffffff8ece14d7 R11: 3d3d3d3d3d3d3d3d R12: ffff8881b9840020
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000100040020
FS: 0000555555b1b480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555974788 CR3: 0000000016762000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: c3 ret
1: 90 nop
2: f3 0f 1e fa endbr64
6: 48 89 f8 mov %rdi,%rax
9: 48 39 fe cmp %rdi,%rsi
c: 7d 0f jge 0x1d
e: 49 89 f0 mov %rsi,%r8
11: 49 01 d0 add %rdx,%r8
14: 49 39 f8 cmp %rdi,%r8
17: 0f 8f b5 00 00 00 jg 0xd2
1d: 48 83 fa 20 cmp $0x20,%rdx
21: 0f 82 01 01 00 00 jb 0x128
27: 48 89 d1 mov %rdx,%rcx
* 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction
2c: c3 ret
2d: 48 81 fa a8 02 00 00 cmp $0x2a8,%rdx
34: 72 05 jb 0x3b
36: 40 38 fe cmp %dil,%sil
39: 74 47 je 0x82
3b: 48 83 ea 20 sub $0x20,%rdx
3f: 48 rex.W