BUG: unable to handle page fault for address: ffffdc0000000008
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 100026067 P4D 100026067 PUD 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 6.0.0-rc1-syzkaller-00049-g4e55e22d3d9a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: events free_work
RIP: 0010:entity_before kernel/sched/fair.c:585 [inline]
RIP: 0010:__entity_less kernel/sched/fair.c:621 [inline]
RIP: 0010:rb_add_cached include/linux/rbtree.h:174 [inline]
RIP: 0010:__enqueue_entity kernel/sched/fair.c:629 [inline]
RIP: 0010:put_prev_entity+0x11d/0x4c0 kernel/sched/fair.c:4722
Code: 00 0f 85 ec 02 00 00 4c 8b 7d 50 ba 01 00 00 00 49 be 00 00 00 00 00 fc ff df eb 03 48 89 c3 48 8d 7b 40 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 19 02 00 00 4c 3b 7b 40 4c 8d 63 10 78 06 4c
RSP: 0000:ffffc900000cfad0 EFLAGS: 00010802
RAX: 1fffe00000000008 RBX: ffff000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff8881f6837bf0 RDI: ffff000000000040
RBP: ffff8881002cd600 R08: ffff8881002cd610 R09: ffff8881f6837bc0
R10: fffffbfff11bd2ca R11: 0000000000000001 R12: ffff88810e8e8098
R13: ffff8881f6837bc0 R14: dffffc0000000000 R15: 000000004543bbc4
FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffdc0000000008 CR3: 0000000007825000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
pick_next_task_fair+0xa42/0xf80 kernel/sched/fair.c:7443
__pick_next_task kernel/sched/core.c:5804 [inline]
pick_next_task kernel/sched/core.c:6313 [inline]
__schedule+0x3a3/0x26f0 kernel/sched/core.c:6458
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6663
__cond_resched+0x13/0x20 kernel/sched/core.c:8299
_cond_resched include/linux/sched.h:2056 [inline]
__vunmap+0x875/0xd30 mm/vmalloc.c:2697
free_work+0x58/0x70 mm/vmalloc.c:97
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2ea/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
Modules linked in:
CR2: ffffdc0000000008
---[ end trace 0000000000000000 ]---
RIP: 0010:entity_before kernel/sched/fair.c:585 [inline]
RIP: 0010:__entity_less kernel/sched/fair.c:621 [inline]
RIP: 0010:rb_add_cached include/linux/rbtree.h:174 [inline]
RIP: 0010:__enqueue_entity kernel/sched/fair.c:629 [inline]
RIP: 0010:put_prev_entity+0x11d/0x4c0 kernel/sched/fair.c:4722
Code: 00 0f 85 ec 02 00 00 4c 8b 7d 50 ba 01 00 00 00 49 be 00 00 00 00 00 fc ff df eb 03 48 89 c3 48 8d 7b 40 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 19 02 00 00 4c 3b 7b 40 4c 8d 63 10 78 06 4c
RSP: 0000:ffffc900000cfad0 EFLAGS: 00010802
RAX: 1fffe00000000008 RBX: ffff000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff8881f6837bf0 RDI: ffff000000000040
RBP: ffff8881002cd600 R08: ffff8881002cd610 R09: ffff8881f6837bc0
R10: fffffbfff11bd2ca R11: 0000000000000001 R12: ffff88810e8e8098
R13: ffff8881f6837bc0 R14: dffffc0000000000 R15: 000000004543bbc4
FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffdc0000000008 CR3: 0000000007825000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 0f add %cl,(%rdi)
2: 85 ec test %ebp,%esp
4: 02 00 add (%rax),%al
6: 00 4c 8b 7d add %cl,0x7d(%rbx,%rcx,4)
a: 50 push %rax
b: ba 01 00 00 00 mov $0x1,%edx
10: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14
17: fc ff df
1a: eb 03 jmp 0x1f
1c: 48 89 c3 mov %rax,%rbx
1f: 48 8d 7b 40 lea 0x40(%rbx),%rdi
23: 48 89 f8 mov %rdi,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction
2f: 0f 85 19 02 00 00 jne 0x24e
35: 4c 3b 7b 40 cmp 0x40(%rbx),%r15
39: 4c 8d 63 10 lea 0x10(%rbx),%r12
3d: 78 06 js 0x45
3f: 4c rex.WR