BUG: unable to handle page fault for address: ffffed1011a4aa01 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 5ffcd067 P4D 5ffcd067 PUD 2fff7067 PMD 0 Oops: Oops: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 793 Comm: kworker/0:2 Not tainted 6.15.0-syzkaller-12141-gec7714e49479 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: cgroup_destroy css_free_rwork_fn RIP: 0010:css_rstat_updated_list kernel/cgroup/rstat.c:296 [inline] RIP: 0010:css_rstat_flush+0x5ff/0x1fa0 kernel/cgroup/rstat.c:425 Code: 61 b0 d1 0d 01 0f 85 e6 14 00 00 e8 bb 1e 07 00 4c 03 6c 24 20 4d 8d 7d 08 4c 89 fb 48 c1 eb 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 03 00 74 08 4c 89 ff e8 53 90 6a 00 49 83 3f 00 0f 84 5d 01 RSP: 0018:ffffc90001a6f780 EFLAGS: 00010802 RAX: dffffc0000000000 RBX: 1ffff11011a4aa01 RCX: ffff888000ce0000 RDX: 0000000000000000 RSI: ffffffff8be28320 RDI: ffffffff8be282e0 RBP: ffffc90001a6f9b8 R08: ffffffff8fa100f7 R09: 1ffffffff1f4201e R10: dffffc0000000000 R11: fffffbfff1f4201f R12: ffff88801fc42730 R13: ffff88808d255000 R14: 0000000000000000 R15: ffff88808d255008 FS: 0000000000000000(0000) GS:ffff88808d255000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1011a4aa01 CR3: 000000004339a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: css_rstat_exit+0xa9/0x320 kernel/cgroup/rstat.c:491 css_free_rwork_fn+0x8b/0xc50 kernel/cgroup/cgroup.c:5449 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CR2: ffffed1011a4aa01 ---[ end trace 0000000000000000 ]--- RIP: 0010:css_rstat_updated_list kernel/cgroup/rstat.c:296 [inline] RIP: 0010:css_rstat_flush+0x5ff/0x1fa0 kernel/cgroup/rstat.c:425 Code: 61 b0 d1 0d 01 0f 85 e6 14 00 00 e8 bb 1e 07 00 4c 03 6c 24 20 4d 8d 7d 08 4c 89 fb 48 c1 eb 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 03 00 74 08 4c 89 ff e8 53 90 6a 00 49 83 3f 00 0f 84 5d 01 RSP: 0018:ffffc90001a6f780 EFLAGS: 00010802 RAX: dffffc0000000000 RBX: 1ffff11011a4aa01 RCX: ffff888000ce0000 RDX: 0000000000000000 RSI: ffffffff8be28320 RDI: ffffffff8be282e0 RBP: ffffc90001a6f9b8 R08: ffffffff8fa100f7 R09: 1ffffffff1f4201e R10: dffffc0000000000 R11: fffffbfff1f4201f R12: ffff88801fc42730 R13: ffff88808d255000 R14: 0000000000000000 R15: ffff88808d255008 FS: 0000000000000000(0000) GS:ffff88808d255000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1011a4aa01 CR3: 000000004339a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: b0 d1 mov $0xd1,%al 2: 0d 01 0f 85 e6 or $0xe6850f01,%eax 7: 14 00 adc $0x0,%al 9: 00 e8 add %ch,%al b: bb 1e 07 00 4c mov $0x4c00071e,%ebx 10: 03 6c 24 20 add 0x20(%rsp),%ebp 14: 4d 8d 7d 08 lea 0x8(%r13),%r15 18: 4c 89 fb mov %r15,%rbx 1b: 48 c1 eb 03 shr $0x3,%rbx 1f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 26: fc ff df * 29: 80 3c 03 00 cmpb $0x0,(%rbx,%rax,1) <-- trapping instruction 2d: 74 08 je 0x37 2f: 4c 89 ff mov %r15,%rdi 32: e8 53 90 6a 00 call 0x6a908a 37: 49 83 3f 00 cmpq $0x0,(%r15) 3b: 0f .byte 0xf 3c: 84 5d 01 test %bl,0x1(%rbp)