Warning: Permanently added '[localhost]:9525' (ECDSA) to the list of known hosts. 2025/08/29 09:09:12 fuzzer started 2025/08/29 09:09:12 dialing manager at localhost:43077 syzkaller login: [ 57.157815] cgroup: Unknown subsys name 'net' [ 57.169458] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] SMP KASAN NOPTI [ 57.170390] KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] [ 57.170991] CPU: 0 UID: 0 PID: 269 Comm: syz-executor Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) [ 57.172710] Tainted: [W]=WARN [ 57.173553] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 57.175270] RIP: 0010:css_rstat_flush+0x2b4/0x1b30 [ 57.176731] Code: 00 49 8d 7d 08 4d 89 6d 00 48 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 29 0f 00 00 4d 8b 6d 08 49 8d 7d 20 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 19 0f 00 00 48 8b 44 24 18 49 8b 6d 20 80 38 [ 57.180528] RSP: 0018:ffff888016dc7b18 EFLAGS: 00010012 [ 57.180950] RAX: 0000000000000004 RBX: ffff8880e55dd000 RCX: ffffffff824fcb97 [ 57.181518] RDX: ffff88801bcd9b80 RSI: ffffffff816cfaf9 RDI: 0000000000000020 [ 57.182093] RBP: ffffe8ffffc143d0 R08: 0000000000000001 R09: ffffed1002db8f55 [ 57.182657] R10: 0000000000000001 R11: 0000000000000001 R12: ffffe8ffffc143d8 [ 57.183224] R13: 0000000000000000 R14: ffff888016b94000 R15: dffffc0000000000 [ 57.183796] FS: 0000555580ec9400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000 [ 57.184435] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.184901] CR2: 000000c000669000 CR3: 00000000127b0000 CR4: 0000000000350ef0 [ 57.185469] Call Trace: [ 57.185687] [ 57.185873] css_rstat_exit+0xd9/0x470 [ 57.186201] cgroup_setup_root+0x85c/0xab0 [ 57.186553] ? __pfx_cgroup_setup_root+0x10/0x10 [ 57.186931] ? init_cgroup_housekeeping+0x3bb/0x520 [ 57.187341] cgroup1_get_tree+0xa1e/0xe90 [ 57.187674] ? cgroup1_get_tree+0x142/0xe90 [ 57.188024] vfs_get_tree+0x93/0x340 [ 57.188346] path_mount+0x132d/0x1dd0 [ 57.188660] ? trace_irq_enable.constprop.0+0xc2/0x100 [ 57.189085] ? __pfx_path_mount+0x10/0x10 [ 57.189440] ? kmem_cache_free+0x2a1/0x540 [ 57.189797] ? putname.part.0+0x11b/0x160 [ 57.190136] ? getname_flags.part.0+0x1c6/0x540 [ 57.190521] ? putname.part.0+0x11b/0x160 [ 57.190865] __x64_sys_mount+0x27b/0x300 [ 57.191189] ? __pfx___x64_sys_mount+0x10/0x10 [ 57.191556] do_syscall_64+0xbf/0x360 [ 57.191864] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 57.192273] RIP: 0033:0x7fbfa98e904a [ 57.192570] Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 [ 57.193989] RSP: 002b:00007ffe95455118 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 57.194581] RAX: ffffffffffffffda RBX: 00007ffe954552b8 RCX: 00007fbfa98e904a [ 57.195138] RDX: 00007fbfa994bfbd RSI: 00007fbfa994229a RDI: 00007fbfa9940d71 [ 57.195696] RBP: 00007fbfa994229a R08: 00007fbfa9942400 R09: ffffffffffff0000 [ 57.196257] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe95455120 [ 57.196835] R13: 00007ffe954552c8 R14: 00007ffe954551f0 R15: 00007fbfa99423f1 [ 57.197432] [ 57.197629] Modules linked in: [ 57.197887] ---[ end trace 0000000000000000 ]--- [ 57.198255] RIP: 0010:css_rstat_flush+0x2b4/0x1b30 [ 57.198652] Code: 00 49 8d 7d 08 4d 89 6d 00 48 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 29 0f 00 00 4d 8b 6d 08 49 8d 7d 20 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 19 0f 00 00 48 8b 44 24 18 49 8b 6d 20 80 38 [ 57.200070] RSP: 0018:ffff888016dc7b18 EFLAGS: 00010012 [ 57.200490] RAX: 0000000000000004 RBX: ffff8880e55dd000 RCX: ffffffff824fcb97 [ 57.201049] RDX: ffff88801bcd9b80 RSI: ffffffff816cfaf9 RDI: 0000000000000020 [ 57.201615] RBP: ffffe8ffffc143d0 R08: 0000000000000001 R09: ffffed1002db8f55 [ 57.202172] R10: 0000000000000001 R11: 0000000000000001 R12: ffffe8ffffc143d8 [ 57.202728] R13: 0000000000000000 R14: ffff888016b94000 R15: dffffc0000000000 [ 57.203284] FS: 0000555580ec9400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000 [ 57.203913] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.204373] CR2: 000000c000669000 CR3: 00000000127b0000 CR4: 0000000000350ef0 [ 57.204931] note: syz-executor[269] exited with irqs disabled [ 57.205498] note: syz-executor[269] exited with preempt_count 1 2025/08/29 09:09:12 failed to run ["/syz-executor" "setup" "leak" "fault" "binfmt_misc" "usb" "802154"]: signal: segmentation fault mount(/syzcgroup/net, net) failed: 22 VM DIAGNOSIS: 09:09:12 Registers: info registers vcpu 0 RAX=000000000000002f RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff828e32c5 RDI=ffffffff88724180 RBP=ffffffff88724140 RSP=ffff888016dc7468 R8 =0000000000000000 R9 =ffffed100180f046 R10=000000000000002f R11=000000003a504952 R12=000000000000002f R13=0000000000000010 R14=ffffffff88724140 R15=ffffffff828e32b0 RIP=ffffffff828e331d RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000555580ec9400 00000000 00000000 GS =0000 ffff8880e55dd000 00000000 00000000 LDT=0000 fffffe6000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000000c000669000 CR3=00000000127b0000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000 XMM04=ffffffffffffff000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff8880e56dd000 RBX=0000000000000001 RCX=ffffffff84bb95f7 RDX=ffffed100d9e630b RSI=0000000000000004 RDI=ffffffff814c8304 RBP=dffffc0000000000 RSP=ffff888009717e58 R8 =0000000000000000 R9 =ffffed100d9e630a R10=ffff88806cf31853 R11=1ffff1100d9e6f7b R12=ffffffff8643ac50 R13=1ffff110012e2fd2 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff84bb831e RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff8880e56dd000 00000000 00000000 LDT=0000 fffffe2800000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000055effde8c040 CR3=0000000005a88000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=000000000167d4800000000000ead800 XMM02=000000000167d5800000000000ead800 XMM03=000000000167d6800000000000ead800 XMM04=00000000000000000000000000000000 XMM05=000000000167d6800000000000ead800 XMM06=000000000167d7000000000000ead800 XMM07=000000000167d7800000000000ead800 XMM08=000000000167d8000000000000ead800 XMM09=000000000167d8800000000000ead800 XMM10=000000000167d9000000000000ead800 XMM11=000000000167d9800000000000ead800 XMM12=000000000167da000000000000ead800 XMM13=000000000153ad400000000000ead480 XMM14=000000000153ada00000000000ead480 XMM15=000000000153ae000000000000ead480