last executing test programs:
kernel console output (not intermixed with test programs):
Warning: Permanently added '[localhost]:47171' (ED25519) to the list of known hosts.
syzkaller login: [ 57.125425][ T5754] cgroup: Unknown subsys name 'net'
[ 57.263308][ T5754] cgroup: Unknown subsys name 'cpuset'
[ 57.270582][ T5754] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[ 59.208941][ T5754] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 64.661524][ T5816] ------------[ cut here ]------------
[ 64.666674][ T5816] WARNING: CPU: 1 PID: 5816 at kernel/nstree.c:189 __ns_tree_add_raw+0xa92/0xb30
[ 64.674027][ T5816] Modules linked in:
[ 64.676556][ T5816] CPU: 1 UID: 0 PID: 5816 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 64.681127][ T5816] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 64.685102][ T5816] RIP: 0010:__ns_tree_add_raw+0xa92/0xb30
[ 64.687381][ T5816] Code: 32 00 90 0f 0b 90 42 80 3c 23 00 0f 85 1e fc ff ff e9 21 fc ff ff e8 ed 78 32 00 90 0f 0b 90 e9 66 fc ff ff e8 df 78 32 00 90 <0f> 0b 90 e9 53 ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ef
[ 64.695065][ T5816] RSP: 0018:ffffc90003f27c30 EFLAGS: 00010293
[ 64.697470][ T5816] RAX: ffffffff818e0051 RBX: 1ffffffff16db871 RCX: ffff88810ffe0000
[ 64.700688][ T5816] RDX: 0000000000000000 RSI: ffff8881bbf5e9a8 RDI: ffff88816d0e6e00
[ 64.703833][ T5816] RBP: ffff88816d0e6e00 R08: ffff88816d0e6e3f R09: 0000000000000000
[ 64.706942][ T5816] R10: ffff88816d0e6e30 R11: ffffffff81b988c0 R12: dffffc0000000000
[ 64.710197][ T5816] R13: ffff88816d0e6e40 R14: ffffffff8b6dc388 R15: ffff8881bbf5e9a8
[ 64.713343][ T5816] FS: 000055558630f500(0000) GS:ffff8882a9d04000(0000) knlGS:0000000000000000
[ 64.716871][ T5816] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 64.719529][ T5816] CR2: 00007f5c3f03529c CR3: 000000010b5bc000 CR4: 00000000000006f0
[ 64.722658][ T5816] Call Trace:
[ 64.724019][ T5816]
[ 64.725203][ T5816] ? copy_cgroup_ns+0x373/0x5f0
[ 64.727144][ T5816] copy_cgroup_ns+0x373/0x5f0
[ 64.729127][ T5816] create_new_namespaces+0x358/0x720
[ 64.731231][ T5816] ? security_capable+0x7e/0x2e0
[ 64.733195][ T5816] unshare_nsproxy_namespaces+0x11c/0x170
[ 64.735445][ T5816] ksys_unshare+0x4c8/0x8c0
[ 64.737264][ T5816] ? __pfx_ksys_unshare+0x10/0x10
[ 64.739393][ T5816] ? __pfx___se_sys_mount+0x10/0x10
[ 64.741460][ T5816] __x64_sys_unshare+0x38/0x50
[ 64.743372][ T5816] do_syscall_64+0xfa/0xfa0
[ 64.745212][ T5816] ? lockdep_hardirqs_on+0x9c/0x150
[ 64.747280][ T5816] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 64.749821][ T5816] ? exc_page_fault+0xab/0x100
[ 64.751759][ T5816] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 64.754083][ T5816] RIP: 0033:0x7f5c3ef907c7
[ 64.755864][ T5816] Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 64.763440][ T5816] RSP: 002b:00007ffc62c39c88 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[ 64.766737][ T5816] RAX: ffffffffffffffda RBX: 00007ffc62c39c90 RCX: 00007f5c3ef907c7
[ 64.769914][ T5816] RDX: 0000000000000000 RSI: 00007f5c3f03529c RDI: 0000000002000000
[ 64.773023][ T5816] RBP: 00007ffc62c39d20 R08: 0000000000000000 R09: 00007f5c3fd1d6c0
[ 64.776154][ T5816] R10: 0000000000044000 R11: 0000000000000246 R12: 00007ffc62c39d20
[ 64.779316][ T5816] R13: 00007ffc62c39d28 R14: 0000000000000009 R15: 0000000000000000
[ 64.782420][ T5816]
[ 64.783658][ T5816] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 64.786526][ T5816] CPU: 1 UID: 0 PID: 5816 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
[ 64.790214][ T5816] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 64.794151][ T5816] Call Trace:
[ 64.795480][ T5816]
[ 64.796672][ T5816] dump_stack_lvl+0x99/0x250
[ 64.798530][ T5816] ? __asan_memcpy+0x40/0x70
[ 64.800365][ T5816] ? __pfx_dump_stack_lvl+0x10/0x10
[ 64.802415][ T5816] ? __pfx__printk+0x10/0x10
[ 64.804266][ T5816] vpanic+0x237/0x6d0
[ 64.805866][ T5816] ? __pfx_vpanic+0x10/0x10
[ 64.807673][ T5816] panic+0xb9/0xc0
[ 64.809229][ T5816] ? __pfx_panic+0x10/0x10
[ 64.811033][ T5816] __warn+0x31b/0x4b0
[ 64.812612][ T5816] ? __ns_tree_add_raw+0xa92/0xb30
[ 64.814629][ T5816] ? __ns_tree_add_raw+0xa92/0xb30
[ 64.816642][ T5816] report_bug+0x2be/0x4f0
[ 64.818377][ T5816] ? __ns_tree_add_raw+0xa92/0xb30
[ 64.820409][ T5816] ? __ns_tree_add_raw+0xa92/0xb30
[ 64.822471][ T5816] ? __ns_tree_add_raw+0xa94/0xb30
[ 64.824521][ T5816] handle_bug+0x84/0x160
[ 64.826207][ T5816] exc_invalid_op+0x1a/0x50
[ 64.828020][ T5816] asm_exc_invalid_op+0x1a/0x20
[ 64.829980][ T5816] RIP: 0010:__ns_tree_add_raw+0xa92/0xb30
[ 64.832718][ T5816] Code: 32 00 90 0f 0b 90 42 80 3c 23 00 0f 85 1e fc ff ff e9 21 fc ff ff e8 ed 78 32 00 90 0f 0b 90 e9 66 fc ff ff e8 df 78 32 00 90 <0f> 0b 90 e9 53 ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ef
[ 64.840107][ T5816] RSP: 0018:ffffc90003f27c30 EFLAGS: 00010293
[ 64.842482][ T5816] RAX: ffffffff818e0051 RBX: 1ffffffff16db871 RCX: ffff88810ffe0000
[ 64.845588][ T5816] RDX: 0000000000000000 RSI: ffff8881bbf5e9a8 RDI: ffff88816d0e6e00
[ 64.848670][ T5816] RBP: ffff88816d0e6e00 R08: ffff88816d0e6e3f R09: 0000000000000000
[ 64.851806][ T5816] R10: ffff88816d0e6e30 R11: ffffffff81b988c0 R12: dffffc0000000000
[ 64.854912][ T5816] R13: ffff88816d0e6e40 R14: ffffffff8b6dc388 R15: ffff8881bbf5e9a8
[ 64.858028][ T5816] ? __pfx_cgroupns_owner+0x10/0x10
[ 64.860103][ T5816] ? __ns_tree_add_raw+0xa91/0xb30
[ 64.862137][ T5816] ? copy_cgroup_ns+0x373/0x5f0
[ 64.864066][ T5816] copy_cgroup_ns+0x373/0x5f0
[ 64.865936][ T5816] create_new_namespaces+0x358/0x720
[ 64.868021][ T5816] ? security_capable+0x7e/0x2e0
[ 64.869989][ T5816] unshare_nsproxy_namespaces+0x11c/0x170
[ 64.872238][ T5816] ksys_unshare+0x4c8/0x8c0
[ 64.874147][ T5816] ? __pfx_ksys_unshare+0x10/0x10
[ 64.876148][ T5816] ? __pfx___se_sys_mount+0x10/0x10
[ 64.878212][ T5816] __x64_sys_unshare+0x38/0x50
[ 64.880132][ T5816] do_syscall_64+0xfa/0xfa0
[ 64.881939][ T5816] ? lockdep_hardirqs_on+0x9c/0x150
[ 64.883993][ T5816] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 64.886377][ T5816] ? exc_page_fault+0xab/0x100
[ 64.888303][ T5816] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 64.890632][ T5816] RIP: 0033:0x7f5c3ef907c7
[ 64.892384][ T5816] Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 64.899853][ T5816] RSP: 002b:00007ffc62c39c88 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[ 64.903118][ T5816] RAX: ffffffffffffffda RBX: 00007ffc62c39c90 RCX: 00007f5c3ef907c7
[ 64.906202][ T5816] RDX: 0000000000000000 RSI: 00007f5c3f03529c RDI: 0000000002000000
[ 64.909304][ T5816] RBP: 00007ffc62c39d20 R08: 0000000000000000 R09: 00007f5c3fd1d6c0
[ 64.912397][ T5816] R10: 0000000000044000 R11: 0000000000000246 R12: 00007ffc62c39d20
[ 64.915496][ T5816] R13: 00007ffc62c39d28 R14: 0000000000000009 R15: 0000000000000000
[ 64.918593][ T5816]
[ 64.920460][ T5816] Kernel Offset: disabled
[ 64.922307][ T5816] Rebooting in 86400 seconds..
VM DIAGNOSIS:
14:19:24 Registers:
info registers vcpu 0
CPU#0
RAX=0000000000000001 RBX=ffffffff8de0c1b8 RCX=ffffffff8b5036ec RDX=0000000000000000
RSI=0000000000000004 RDI=ffffffff8de0c1b8 RBP=ffffc90003f37ad8 RSP=ffffc90003f379e0
R8 =ffffffff8de0c1bb R9 =1ffffffff1bc1837 R10=dffffc0000000000 R11=fffffbfff1bc1838
R12=1ffff920007e6f44 R13=0000000000000001 R14=ffffc90003f37a40 R15=1ffffffff1bc1837
RIP=ffffffff8b5036df RFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 ffffffff 00c00000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 ffffffff 00c00000
FS =0000 00005555637b5500 ffffffff 00c00000
GS =0000 ffff88818e704000 ffffffff 00c00000
LDT=0000 0000000000000000 ffffffff 00c00000
TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000001000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007f20c002ed40 CR3=000000010af10000 CR4=000006f0
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=0000000000000100 0000000000000100 XMM01=00007f20c0d1d6b0 00007f20c0d1d6b0
XMM02=0000000000000000 0000000000000000 XMM03=0000000000000000 0000000000000000
XMM04=0000000000000000 0000000000000000 XMM05=0000000000000000 0000000000000000
XMM06=0000000000000000 0000000000000000 XMM07=0000000000000000 0000000000000000
XMM08=0000000000000000 0000000000000000 XMM09=0000000000000000 0000000000000000
XMM10=0000000000000000 0000000000000000 XMM11=0000000000000000 0000000000000000
XMM12=0000000000000000 0000000000000000 XMM13=0000000000000000 0000000000000000
XMM14=0000000000000000 0000000000000000 XMM15=0000000000000000 0000000000000000
info registers vcpu 1
CPU#1
RAX=0000000000000050 RBX=0000000000000050 RCX=0000000000000000 RDX=00000000000003f8
RSI=0000000000000000 RDI=0000000000000020 RBP=00000000000003f8 RSP=ffffc90003f273d0
R8 =ffff888169790237 R9 =1ffff1102d2f2046 R10=dffffc0000000000 R11=ffffffff851c5350
R12=dffffc0000000000 R13=ffffffff99a1197c R14=ffffffff99d25000 R15=0000000000000000
RIP=ffffffff851c53cc RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 ffffffff 00c00000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 ffffffff 00c00000
FS =0000 000055558630f500 ffffffff 00c00000
GS =0000 ffff8882a9d04000 ffffffff 00c00000
LDT=0000 0000000000000000 ffffffff 00c00000
TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000048000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007f5c3f03529c CR3=000000010b5bc000 CR4=000006f0
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=0000000000000100 0000000000000100 XMM01=00007f5c3fd1d6b0 00007f5c3fd1d6b0
XMM02=0000000000000000 0000000000000000 XMM03=0000000000000000 0000000000000000
XMM04=0000000000000000 0000000000000000 XMM05=0000000000000000 0000000000000000
XMM06=0000000000000000 0000000000000000 XMM07=0000000000000000 0000000000000000
XMM08=0000000000000000 0000000000000000 XMM09=0000000000000000 0000000000000000
XMM10=0000000000000000 0000000000000000 XMM11=0000000000000000 0000000000000000
XMM12=0000000000000000 0000000000000000 XMM13=0000000000000000 0000000000000000
XMM14=0000000000000000 0000000000000000 XMM15=0000000000000000 0000000000000000