Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 UID: 0 PID: 7624 Comm: syz-executor Tainted: G B syzkaller #0 7512b07cb8b2b81a08448db7682669b21f09f733 Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 RIP: 0010:do_trace_event_raw_event_cgroup_rstat include/trace/events/cgroup.h:222 [inline] RIP: 0010:trace_event_raw_event_cgroup_rstat+0x14b/0x3b0 include/trace/events/cgroup.h:207 Code: 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 38 0f 63 00 44 89 64 24 18 48 8b 1b 48 83 c3 0c 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 8c 01 00 00 44 8b 23 49 8d 5d 08 48 89 RSP: 0018:ffffc900125d7ae0 EFLAGS: 00010003 RAX: 0000000000000001 RBX: 000000000000000c RCX: ffff888115b42780 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffffc900125d7bd0 R08: ffff888115b42780 R09: 0000000000000002 R10: fffffffffffffff5 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8881170559c8 R14: 1ffff920024baf60 R15: dffffc0000000000 FS: 00005555693f4500(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562700509300 CR3: 000000010c37c000 CR4: 00000000003526b0 DR0: 0000000000000008 DR1: 0000000000000007 DR2: 0000000000000002 DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: trace_cgroup_rstat_locked include/trace/events/cgroup.h:242 [inline] __cgroup_rstat_lock+0x11e/0x280 kernel/cgroup/rstat.c:292 cgroup_rstat_flush+0x22/0x150 kernel/cgroup/rstat.c:351 cgroup_rstat_exit+0x33/0x1e0 kernel/cgroup/rstat.c:409 cgroup_create kernel/cgroup/cgroup.c:5822 [inline] cgroup_mkdir+0xd38/0x1590 kernel/cgroup/cgroup.c:5871 kernfs_iop_mkdir+0x1be/0x2d0 fs/kernfs/dir.c:1252 vfs_mkdir+0x58e/0x810 fs/namei.c:4265 do_mkdirat+0x240/0x530 fs/namei.c:4288 __do_sys_mkdirat fs/namei.c:4303 [inline] __se_sys_mkdirat fs/namei.c:4301 [inline] __x64_sys_mkdirat+0x8b/0xa0 fs/namei.c:4301 x64_sys_call+0x2ba8/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:259 do_syscall_x64 arch/x86/entry/common.c:47 [inline] do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f879179e3c7 Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc68c8d6c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f87918363b3 RCX: 00007f879179e3c7 RDX: 00000000000001ff RSI: 00007ffc68c8d720 RDI: 00000000ffffff9c RBP: 0000000000000001 R08: 0000000000000001 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000202 R12: 00007f8791837a08 R13: 0000000000000003 R14: 00007ffc68c8d720 R15: 00007ffc68c8d760 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_trace_event_raw_event_cgroup_rstat include/trace/events/cgroup.h:222 [inline] RIP: 0010:trace_event_raw_event_cgroup_rstat+0x14b/0x3b0 include/trace/events/cgroup.h:207 Code: 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 38 0f 63 00 44 89 64 24 18 48 8b 1b 48 83 c3 0c 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 8c 01 00 00 44 8b 23 49 8d 5d 08 48 89 RSP: 0018:ffffc900125d7ae0 EFLAGS: 00010003 RAX: 0000000000000001 RBX: 000000000000000c RCX: ffff888115b42780 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffffc900125d7bd0 R08: ffff888115b42780 R09: 0000000000000002 R10: fffffffffffffff5 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8881170559c8 R14: 1ffff920024baf60 R15: dffffc0000000000 FS: 00005555693f4500(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562700509300 CR3: 000000010c37c000 CR4: 00000000003526b0 DR0: 0000000000000008 DR1: 0000000000000007 DR2: 0000000000000002 DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 48 89 add %cl,-0x77(%rax) 3: d8 48 c1 fmuls -0x3f(%rax) 6: e8 03 42 80 3c call 0x3c80420e b: 38 00 cmp %al,(%rax) d: 74 08 je 0x17 f: 48 89 df mov %rbx,%rdi 12: e8 38 0f 63 00 call 0x630f4f 17: 44 89 64 24 18 mov %r12d,0x18(%rsp) 1c: 48 8b 1b mov (%rbx),%rbx 1f: 48 83 c3 0c add $0xc,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 8c 01 00 00 jne 0x1c3 37: 44 8b 23 mov (%rbx),%r12d 3a: 49 8d 5d 08 lea 0x8(%r13),%rbx 3e: 48 rex.W 3f: 89 .byte 0x89