Warning: Permanently added '10.128.1.231' (ED25519) to the list of known hosts.
2025/12/25 09:43:48 parsed 1 programs
[ 284.383282][ T28] audit: type=1400 audit(1766655828.754:64): avc: denied { node_bind } for pid=282 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1
[ 284.403976][ T28] audit: type=1400 audit(1766655828.754:65): avc: denied { module_request } for pid=282 comm="syz-execprog" kmod="net-pf-2-proto-262-type-1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1
[ 285.476946][ T28] audit: type=1400 audit(1766655829.854:66): avc: denied { mounton } for pid=291 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2023 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1
[ 285.480357][ T291] cgroup: Unknown subsys name 'net'
[ 285.499767][ T28] audit: type=1400 audit(1766655829.854:67): avc: denied { mount } for pid=291 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 285.527022][ T28] audit: type=1400 audit(1766655829.884:68): avc: denied { unmount } for pid=291 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 285.527429][ T291] cgroup: Unknown subsys name 'devices'
[ 285.637207][ T291] cgroup: Unknown subsys name 'hugetlb'
[ 285.642914][ T291] cgroup: Unknown subsys name 'rlimit'
[ 285.784069][ T28] audit: type=1400 audit(1766655830.154:69): avc: denied { setattr } for pid=291 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=258 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1
[ 285.807434][ T28] audit: type=1400 audit(1766655830.154:70): avc: denied { create } for pid=291 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 285.827856][ T28] audit: type=1400 audit(1766655830.154:71): avc: denied { write } for pid=291 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 285.848212][ T28] audit: type=1400 audit(1766655830.154:72): avc: denied { read } for pid=291 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 285.868541][ T28] audit: type=1400 audit(1766655830.154:73): avc: denied { mounton } for pid=291 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1
[ 285.880356][ T293] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
Setting up swapspace version 1, size = 127995904 bytes
[ 285.954017][ T291] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 286.660457][ T295] request_module fs-gadgetfs succeeded, but still no fs?
[ 286.956773][ T308] syz-executor (308) used greatest stack depth: 22304 bytes left
[ 287.030140][ T322] bridge0: port 1(bridge_slave_0) entered blocking state
[ 287.037199][ T322] bridge0: port 1(bridge_slave_0) entered disabled state
[ 287.044540][ T322] device bridge_slave_0 entered promiscuous mode
[ 287.051531][ T322] bridge0: port 2(bridge_slave_1) entered blocking state
[ 287.058577][ T322] bridge0: port 2(bridge_slave_1) entered disabled state
[ 287.065972][ T322] device bridge_slave_1 entered promiscuous mode
[ 287.119354][ T322] bridge0: port 2(bridge_slave_1) entered blocking state
[ 287.126451][ T322] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 287.133724][ T322] bridge0: port 1(bridge_slave_0) entered blocking state
[ 287.140782][ T322] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 287.160474][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 287.168314][ T10] bridge0: port 1(bridge_slave_0) entered disabled state
[ 287.175756][ T10] bridge0: port 2(bridge_slave_1) entered disabled state
[ 287.184481][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 287.192809][ T10] bridge0: port 1(bridge_slave_0) entered blocking state
[ 287.199885][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 287.209318][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 287.217558][ T10] bridge0: port 2(bridge_slave_1) entered blocking state
[ 287.224596][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 287.236700][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 287.246761][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 287.260194][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 287.271753][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 287.280330][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 287.287818][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 287.296399][ T322] device veth0_vlan entered promiscuous mode
[ 287.309549][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 287.319465][ T322] device veth1_macvtap entered promiscuous mode
[ 287.328719][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 287.338780][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 287.373254][ T322] syz-executor (322) used greatest stack depth: 21696 bytes left
2025/12/25 09:43:52 executed programs: 0
[ 287.965829][ T366] bridge0: port 1(bridge_slave_0) entered blocking state
[ 287.972876][ T366] bridge0: port 1(bridge_slave_0) entered disabled state
[ 287.981079][ T366] device bridge_slave_0 entered promiscuous mode
[ 287.988155][ T366] bridge0: port 2(bridge_slave_1) entered blocking state
[ 287.995293][ T366] bridge0: port 2(bridge_slave_1) entered disabled state
[ 288.002733][ T366] device bridge_slave_1 entered promiscuous mode
[ 288.056861][ T366] bridge0: port 2(bridge_slave_1) entered blocking state
[ 288.063907][ T366] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 288.071236][ T366] bridge0: port 1(bridge_slave_0) entered blocking state
[ 288.078286][ T366] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 288.098419][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 288.106311][ T8] bridge0: port 1(bridge_slave_0) entered disabled state
[ 288.113445][ T8] bridge0: port 2(bridge_slave_1) entered disabled state
[ 288.122711][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 288.131059][ T8] bridge0: port 1(bridge_slave_0) entered blocking state
[ 288.138106][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 288.149688][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 288.157991][ T8] bridge0: port 2(bridge_slave_1) entered blocking state
[ 288.165057][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 288.176536][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 288.186045][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 288.201500][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 288.212667][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 288.220944][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 288.228482][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 288.236897][ T366] device veth0_vlan entered promiscuous mode
[ 288.247574][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 288.256646][ T366] device veth1_macvtap entered promiscuous mode
[ 288.266253][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 288.276231][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 288.303025][ T377] loop2: detected capacity change from 0 to 1024
[ 288.309873][ T377] =======================================================
[ 288.309873][ T377] WARNING: The mand mount option has been deprecated and
[ 288.309873][ T377] and is ignored by this kernel. Remove the mand
[ 288.309873][ T377] option from the mount to silence this warning.
[ 288.309873][ T377] =======================================================
[ 288.346183][ T377] EXT4-fs: Ignoring removed oldalloc option
[ 288.352135][ T377] EXT4-fs: Ignoring removed orlov option
[ 288.367160][ T377] EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback.
[ 289.057750][ T43] device bridge_slave_1 left promiscuous mode
[ 289.063973][ T43] bridge0: port 2(bridge_slave_1) entered disabled state
[ 289.071868][ T43] device bridge_slave_0 left promiscuous mode
[ 289.078166][ T43] bridge0: port 1(bridge_slave_0) entered disabled state
[ 289.086552][ T43] device veth1_macvtap left promiscuous mode
[ 289.092635][ T43] device veth0_vlan left promiscuous mode
[ 290.054770][ C1] sched: RT throttling activated
[ 303.368708][ T382] bridge0: port 1(bridge_slave_0) entered blocking state
[ 303.375937][ T382] bridge0: port 1(bridge_slave_0) entered disabled state
[ 303.383598][ T382] device bridge_slave_0 entered promiscuous mode
[ 303.390901][ T382] bridge0: port 2(bridge_slave_1) entered blocking state
[ 303.398105][ T382] bridge0: port 2(bridge_slave_1) entered disabled state
[ 303.405710][ T382] device bridge_slave_1 entered promiscuous mode
[ 303.471500][ T382] bridge0: port 2(bridge_slave_1) entered blocking state
[ 303.478605][ T382] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 303.485948][ T382] bridge0: port 1(bridge_slave_0) entered blocking state
[ 303.493110][ T382] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 303.517681][ T43] bridge0: port 1(bridge_slave_0) entered disabled state
[ 303.525759][ T43] bridge0: port 2(bridge_slave_1) entered disabled state
[ 303.533345][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 303.541509][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 303.557277][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 303.565790][ T43] bridge0: port 1(bridge_slave_0) entered blocking state
[ 303.572833][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 303.580510][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 303.589374][ T43] bridge0: port 2(bridge_slave_1) entered blocking state
[ 303.596437][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 303.616138][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 303.624731][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 303.633290][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 303.647053][ T382] device veth0_vlan entered promiscuous mode
[ 303.653641][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 303.662138][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 303.670123][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 303.683975][ T382] device veth1_macvtap entered promiscuous mode
[ 303.691660][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 303.704013][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
2025/12/25 09:44:08 executed programs: 3
[ 303.725127][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 303.754301][ T393] loop3: detected capacity change from 0 to 1024
[ 303.774584][ T393] EXT4-fs: Ignoring removed oldalloc option
[ 303.788113][ T393] EXT4-fs: Ignoring removed orlov option
[ 303.806237][ T393] EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
[ 403.834730][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 403.841956][ C0] (detected by 0, t=10002 jiffies, g=1709, q=946 ncpus=2)
[ 403.849180][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10002 (4294977592-4294967590), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 403.862573][ C0] rcu: rcu_preempt kthread starved for 10002 jiffies! g1709 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 403.873731][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 403.883708][ C0] rcu: RCU grace-period kthread stack dump:
[ 403.889632][ C0] task:rcu_preempt state:R running task stack:28528 pid:14 ppid:2 flags:0x00004000
[ 403.900480][ C0] Call Trace:
[ 403.903765][ C0]
[ 403.906712][ C0] __schedule+0xb87/0x14e0
[ 403.911264][ C0] ? __sched_text_start+0x8/0x8
[ 403.916155][ C0] schedule+0xbd/0x170
[ 403.920326][ C0] schedule_timeout+0x12c/0x2e0
[ 403.925197][ C0] ? __cfi_schedule_timeout+0x10/0x10
[ 403.930581][ C0] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 403.936085][ C0] ? __cfi_process_timeout+0x10/0x10
[ 403.941444][ C0] ? prepare_to_swait_event+0x308/0x320
[ 403.947060][ C0] rcu_gp_fqs_loop+0x2d8/0x10a0
[ 403.951930][ C0] ? rcu_gp_init+0xf10/0xf10
[ 403.956535][ C0] rcu_gp_kthread+0x95/0x370
[ 403.961131][ C0] ? __cfi_rcu_gp_kthread+0x10/0x10
[ 403.966359][ C0] ? __kasan_check_read+0x11/0x20
[ 403.971430][ C0] ? __kthread_parkme+0x142/0x180
[ 403.976516][ C0] kthread+0x281/0x320
[ 403.980625][ C0] ? __cfi_rcu_gp_kthread+0x10/0x10
[ 403.985851][ C0] ? __cfi_kthread+0x10/0x10
[ 403.990456][ C0] ret_from_fork+0x1f/0x30
[ 403.994945][ C0]
[ 403.997976][ C0] rcu: Stack dump where RCU GP kthread last ran:
[ 404.004343][ C0] CPU: 0 PID: 393 Comm: syz.3.18 Not tainted syzkaller #0
[ 404.011466][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 404.021564][ C0] RIP: 0010:__ext4_get_inode_loc+0xac/0xdf0
[ 404.027526][ C0] Code: f1 42 c7 44 33 09 f3 f3 f3 f3 66 42 c7 44 33 0d f3 f3 42 c6 44 33 0f f3 e8 a1 a2 87 ff 4d 89 fd 49 c1 ed 03 43 80 7c 35 00 00 <74> 08 4c 89 ff e8 fa 22 cc ff 49 c7 07 00 00 00 00 bf 02 00 00 00
[ 404.047156][ C0] RSP: 0018:ffffc90000bf70c0 EFLAGS: 00000246
[ 404.053244][ C0] RAX: ffffffff81e8875f RBX: 1ffff9200017ee34 RCX: ffff88811738a880
[ 404.061229][ C0] RDX: 0000000000000000 RSI: 0000000000000013 RDI: ffff888117384000
[ 404.069209][ C0] RBP: ffffc90000bf7280 R08: ffffc90000bf72a0 R09: ffffed1022f1ac4b
[ 404.077181][ C0] R10: ffffed1022f1ac4b R11: 1ffff11022f1ac4a R12: 0000000000000013
[ 404.085165][ C0] R13: 1ffff9200017ee64 R14: dffffc0000000000 R15: ffffc90000bf7320
[ 404.093144][ C0] FS: 000055556cd28500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 404.102075][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 404.108682][ C0] CR2: 00007fd562b15000 CR3: 00000001132e5000 CR4: 00000000003506b0
[ 404.116662][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 404.124630][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 404.132598][ C0] Call Trace:
[ 404.135882][ C0]
[ 404.138819][ C0] ? folio_mark_accessed+0x1b8/0x4d0
[ 404.144162][ C0] ? __cfi_folio_mark_accessed+0x10/0x10
[ 404.149842][ C0] ? __ext4_handle_dirty_metadata+0x2f3/0x800
[ 404.155924][ C0] ? ext4_get_inode_loc+0xf0/0xf0
[ 404.160958][ C0] ? mark_page_accessed+0x55/0x70
[ 404.165996][ C0] ? __find_get_block+0xafd/0xee0
[ 404.171044][ C0] ? __kasan_check_write+0x14/0x20
[ 404.176162][ C0] ? _raw_spin_lock+0x8e/0xe0
[ 404.180842][ C0] ? __cfi__raw_spin_lock+0x10/0x10
[ 404.186043][ C0] ext4_reserve_inode_write+0x12a/0x2e0
[ 404.191633][ C0] __ext4_mark_inode_dirty+0xb2/0x600
[ 404.197020][ C0] ext4_dirty_inode+0xbd/0x100
[ 404.201796][ C0] ? __cfi_ext4_dirty_inode+0x10/0x10
[ 404.207183][ C0] __mark_inode_dirty+0x203/0x9d0
[ 404.212214][ C0] ext4_xattr_block_set+0x167d/0x3270
[ 404.217627][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 404.223129][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 404.228510][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 404.233890][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 404.239734][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 404.245742][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 404.252079][ C0] ext4_initxattrs+0xa6/0x110
[ 404.256766][ C0] security_inode_init_security+0x28c/0x3a0
[ 404.262669][ C0] ? posix_acl_create+0x118/0x440
[ 404.267712][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 404.273006][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 404.279418][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 404.284538][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 404.289862][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 404.294980][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 404.299839][ C0] ext4_init_security+0x34/0x40
[ 404.304694][ C0] __ext4_new_inode+0x2c29/0x3640
[ 404.309748][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 404.315135][ C0] ? dquot_initialize+0x20/0x20
[ 404.319990][ C0] ? may_create+0x60c/0x810
[ 404.324498][ C0] ext4_mknod+0x235/0x4a0
[ 404.328840][ C0] ? __cfi_ext4_mknod+0x10/0x10
[ 404.333702][ C0] ? selinux_inode_mknod+0x7b/0xa0
[ 404.338819][ C0] ? security_inode_mknod+0xdc/0x120
[ 404.344112][ C0] vfs_mknod+0x464/0x4f0
[ 404.348364][ C0] unix_bind+0x499/0xe40
[ 404.352639][ C0] ? memcpy+0x56/0x70
[ 404.356624][ C0] ? __cfi_unix_bind+0x10/0x10
[ 404.361398][ C0] ? security_socket_bind+0x93/0xb0
[ 404.366610][ C0] __sys_bind+0x311/0x420
[ 404.370979][ C0] ? __se_sys_futex+0x273/0x2e0
[ 404.375844][ C0] ? __cfi___sys_bind+0x10/0x10
[ 404.380697][ C0] ? debug_smp_processor_id+0x17/0x20
[ 404.386085][ C0] __x64_sys_bind+0x7a/0x90
[ 404.390605][ C0] x64_sys_call+0x70c/0x9a0
[ 404.395173][ C0] do_syscall_64+0x4c/0xa0
[ 404.399601][ C0] ? clear_bhb_loop+0x30/0x80
[ 404.404285][ C0] ? clear_bhb_loop+0x30/0x80
[ 404.408973][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 404.414875][ C0] RIP: 0033:0x7fb4a6f8f749
[ 404.419294][ C0] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 404.438903][ C0] RSP: 002b:00007ffff5feea48 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
[ 404.447319][ C0] RAX: ffffffffffffffda RBX: 00007fb4a71e5fa0 RCX: 00007fb4a6f8f749
[ 404.455388][ C0] RDX: 000000000000006e RSI: 00002000000000c0 RDI: 0000000000000004
[ 404.463376][ C0] RBP: 00007fb4a7013f91 R08: 0000000000000000 R09: 0000000000000000
[ 404.471364][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 404.479350][ C0] R13: 00007fb4a71e5fa0 R14: 00007fb4a71e5fa0 R15: 0000000000000003
[ 404.487339][ C0]
[ 452.044727][ T29] INFO: task kworker/u4:2:43 blocked for more than 125 seconds.
[ 452.052433][ T29] Not tainted syzkaller #0
[ 452.057639][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 452.066581][ T29] task:kworker/u4:2 state:D stack:23200 pid:43 ppid:2 flags:0x00004000
[ 452.075974][ T29] Workqueue: events_unbound linkwatch_event
[ 452.081925][ T29] Call Trace:
[ 452.085256][ T29]
[ 452.088219][ T29] __schedule+0xb87/0x14e0
[ 452.092637][ T29] ? __sched_text_start+0x8/0x8
[ 453.045665][ T29] ? __mutex_add_waiter+0x17b/0x270
[ 453.051085][ T29] ? __kasan_check_write+0x14/0x20
[ 453.056282][ T29] ? kthread_data+0x50/0xc0
[ 453.060802][ T29] ? wq_worker_sleeping+0x64/0x280
[ 453.066043][ T29] schedule+0xbd/0x170
[ 453.070136][ T29] schedule_preempt_disabled+0x13/0x20
[ 453.075626][ T29] __mutex_lock+0x74a/0x16d0
[ 453.080252][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 453.087179][ T29] ? __kasan_check_write+0x14/0x20
[ 453.092584][ T29] ? __switch_to+0x51f/0xe30
[ 454.045723][ T29] ? __cfi___switch_to+0x10/0x10
[ 454.050841][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 454.055877][ T29] __mutex_lock_slowpath+0xe/0x10
[ 454.061015][ T29] mutex_lock+0xf8/0x1a0
[ 454.065338][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 454.070212][ T29] ? __schedule+0xb8f/0x14e0
[ 454.074956][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 454.080539][ T29] rtnl_lock+0x15/0x20
[ 454.084604][ T29] linkwatch_event+0xe/0x60
[ 454.089222][ T29] process_one_work+0x71f/0xc40
[ 454.094094][ T29] worker_thread+0xa29/0x11f0
[ 455.055048][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 455.060573][ T29] kthread+0x281/0x320
[ 455.064736][ T29] ? __cfi_worker_thread+0x10/0x10
[ 455.069922][ T29] ? __cfi_kthread+0x10/0x10
[ 455.074529][ T29] ret_from_fork+0x1f/0x30
[ 455.078991][ T29]
[ 455.082095][ T29] INFO: task syz-executor:399 blocked for more than 128 seconds.
[ 455.089881][ T29] Not tainted syzkaller #0
[ 456.044991][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 456.053757][ T29] task:syz-executor state:D stack:23264 pid:399 ppid:1 flags:0x00004004
[ 456.063079][ T29] Call Trace:
[ 456.066416][ T29]
[ 456.069372][ T29] __schedule+0xb87/0x14e0
[ 456.073793][ T29] ? __kasan_check_write+0x14/0x20
[ 456.078946][ T29] ? __sched_text_start+0x8/0x8
[ 456.083856][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 456.089735][ T29] ? prepare_to_wait_event+0x40b/0x440
[ 457.044816][ T29] schedule+0xbd/0x170
[ 457.048941][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 457.054646][ T29] ? kasan_quarantine_put+0x34/0x190
[ 457.060060][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 457.066286][ T29] ? ____kasan_slab_free+0x13d/0x180
[ 457.071650][ T29] ? __kasan_slab_free+0x11/0x20
[ 457.076700][ T29] ? slab_free_freelist_hook+0xc2/0x190
[ 457.082296][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 457.087644][ T29] ? __kmem_cache_free+0xb7/0x1b0
[ 457.092687][ T29] ? __kasan_check_write+0x14/0x20
[ 458.045509][ T29] ? kobject_put+0x1bb/0x280
[ 458.050252][ T29] ? __cfi_netdev_queue_release+0x10/0x10
[ 458.056108][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 458.062216][ T29] ? netdev_queue_update_kobjects+0x428/0x470
[ 458.068387][ T29] ? __x64_sys_sendto+0xe5/0x100
[ 458.073392][ T29] ? x64_sys_call+0x83/0x9a0
[ 458.078066][ T29] ? __kasan_check_read+0x11/0x20
[ 458.083115][ T29] netif_set_real_num_tx_queues+0x4c9/0x7f0
[ 458.089073][ T29] veth_newlink+0x874/0xbe0
[ 458.093651][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 459.045385][ T29] ? rtnl_create_link+0x88d/0xb10
[ 459.050481][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 459.055630][ T29] rtnl_newlink+0x14b9/0x2030
[ 459.060334][ T29] ? memcpy+0x56/0x70
[ 459.064312][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 459.069382][ T29] ? selinux_capable+0x29c/0x380
[ 459.074336][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 459.079707][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 459.084644][ T29] ? ns_capable+0x8c/0xf0
[ 459.089098][ T29] ? netlink_net_capable+0x125/0x160
[ 459.094393][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 460.055302][ T29] rtnetlink_rcv_msg+0x9f4/0xcf0
[ 460.060490][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 460.066042][ T29] ? kernel_text_address+0xa0/0xd0
[ 460.071260][ T29] ? __kernel_text_address+0xd/0x30
[ 460.076568][ T29] ? unwind_get_return_address+0x4d/0x90
[ 460.082348][ T29] ? memcpy+0x56/0x70
[ 460.086423][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 460.091829][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 461.044950][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 461.050568][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 461.056150][ T29] ? __alloc_skb+0xea/0x4b0
[ 461.060675][ T29] ? avc_has_perm+0x158/0x240
[ 461.065423][ T29] ? __alloc_skb+0x236/0x4b0
[ 461.070028][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 461.075034][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 461.080076][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 461.085538][ T29] netlink_rcv_skb+0x1f2/0x440
[ 461.090336][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 462.045163][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 462.050557][ T29] ? __netlink_lookup+0x387/0x3b0
[ 462.055671][ T29] rtnetlink_rcv+0x1c/0x20
[ 462.060108][ T29] netlink_unicast+0x8ab/0xa30
[ 462.064961][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 462.069740][ T29] ? kasan_save_alloc_info+0x25/0x30
[ 462.075091][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 462.080391][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 462.085922][ T29] __sys_sendto+0x464/0x5e0
[ 462.090448][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 463.054810][ T29] ? errseq_sample+0x44/0x70
[ 463.059516][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 463.065166][ T29] ? xfd_validate_state+0x70/0x150
[ 463.070391][ T29] __x64_sys_sendto+0xe5/0x100
[ 463.075260][ T29] x64_sys_call+0x83/0x9a0
[ 463.079711][ T29] do_syscall_64+0x4c/0xa0
[ 463.084120][ T29] ? clear_bhb_loop+0x30/0x80
[ 463.088880][ T29] ? clear_bhb_loop+0x30/0x80
[ 463.093587][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 464.045606][ T29] RIP: 0033:0x7f9c91791583
[ 464.050095][ T29] RSP: 002b:00007ffd64867558 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 464.058579][ T29] RAX: ffffffffffffffda RBX: 00007f9c92514620 RCX: 00007f9c91791583
[ 464.066611][ T29] RDX: 000000000000002c RSI: 00007f9c92514670 RDI: 0000000000000003
[ 464.074649][ T29] RBP: 0000000000000001 R08: 00007ffd64867574 R09: 000000000000000c
[ 464.082682][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 464.090727][ T29] R13: 0000000000000000 R14: 00007f9c92514670 R15: 0000000000000000
[ 465.044939][ T29]
[ 465.048024][ T29] NMI backtrace for cpu 1
[ 465.052357][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 465.059592][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 465.069647][ T29] Call Trace:
[ 465.072926][ T29]
[ 465.075858][ T29] __dump_stack+0x21/0x24
[ 465.080195][ T29] dump_stack_lvl+0xee/0x150
[ 465.084793][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 465.089857][ T29] dump_stack+0x15/0x24
[ 465.094037][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 465.098999][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 465.104569][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 465.110043][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 465.114990][ T29] ? memcpy+0x56/0x70
[ 465.118976][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 465.125035][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 465.131033][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 465.136935][ T29] watchdog+0xd44/0xe80
[ 465.141102][ T29] ? __cfi_watchdog+0x10/0x10
[ 465.145809][ T29] ? __kasan_check_read+0x11/0x20
[ 465.150855][ T29] ? __kthread_parkme+0x142/0x180
[ 465.155908][ T29] kthread+0x281/0x320
[ 465.159976][ T29] ? __cfi_watchdog+0x10/0x10
[ 465.164668][ T29] ? __cfi_kthread+0x10/0x10
[ 465.169273][ T29] ret_from_fork+0x1f/0x30
[ 465.173701][ T29]
[ 465.176834][ T29] Sending NMI from CPU 1 to CPUs 0:
[ 465.182057][ C0] NMI backtrace for cpu 0
[ 465.182078][ C0] CPU: 0 PID: 393 Comm: syz.3.18 Not tainted syzkaller #0
[ 465.182094][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 465.182104][ C0] RIP: 0010:__kasan_check_read+0x0/0x20
[ 465.182124][ C0] Code: 47 86 eb 0a 48 c7 c7 e8 fe 3d 86 48 89 de e8 6f fa 34 03 45 31 ff eb d1 00 00 90 90 90 90 90 90 90 90 90 90 90 b8 f1 16 b4 ef <55> 48 89 e5 89 f6 48 8b 4d 08 31 d2 e8 df e7 ff ff 5d c3 66 2e 0f
[ 465.182138][ C0] RSP: 0018:ffffc90000bf70b8 EFLAGS: 00000286
[ 465.182153][ C0] RAX: ffff888123726f18 RBX: 1ffff9200017ee34 RCX: ffff88811738a880
[ 465.182166][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888123726f18
[ 465.182176][ C0] RBP: ffffc90000bf7280 R08: dffffc0000000000 R09: fffff94000974f59
[ 465.182188][ C0] R10: fffff94000974f59 R11: 1ffffd4000974f58 R12: ffff888123726f18
[ 465.182201][ C0] R13: 1ffff11022e70803 R14: dffffc0000000000 R15: ffff888123726f18
[ 465.182213][ C0] FS: 000055556cd28500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 465.182228][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 465.182239][ C0] CR2: 00007ffdb73b26e8 CR3: 00000001132e5000 CR4: 00000000003506b0
[ 465.182254][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 465.182263][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 465.182273][ C0] Call Trace:
[ 465.182278][ C0]
[ 465.182283][ C0] ? __ext4_get_inode_loc+0x490/0xdf0
[ 465.182309][ C0] ? ext4_get_inode_loc+0xf0/0xf0
[ 465.182329][ C0] ? mark_page_accessed+0x55/0x70
[ 465.182350][ C0] ? __kasan_check_write+0x14/0x20
[ 465.182365][ C0] ? _raw_spin_lock+0x8e/0xe0
[ 465.182384][ C0] ? __cfi__raw_spin_lock+0x10/0x10
[ 465.182403][ C0] ext4_reserve_inode_write+0x12a/0x2e0
[ 465.182427][ C0] __ext4_mark_inode_dirty+0xb2/0x600
[ 465.182447][ C0] ext4_dirty_inode+0xbd/0x100
[ 465.182480][ C0] ? __cfi_ext4_dirty_inode+0x10/0x10
[ 465.182501][ C0] __mark_inode_dirty+0x203/0x9d0
[ 465.182520][ C0] ext4_xattr_block_set+0x167d/0x3270
[ 465.182548][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 465.182571][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 465.182594][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 465.182618][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 465.182640][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 465.182659][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 465.182677][ C0] ext4_initxattrs+0xa6/0x110
[ 465.182694][ C0] security_inode_init_security+0x28c/0x3a0
[ 465.182711][ C0] ? posix_acl_create+0x118/0x440
[ 465.182733][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 465.182749][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 465.182768][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 465.182788][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 465.182810][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 465.182826][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 465.182845][ C0] ext4_init_security+0x34/0x40
[ 465.182861][ C0] __ext4_new_inode+0x2c29/0x3640
[ 465.182889][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 465.182912][ C0] ? dquot_initialize+0x20/0x20
[ 465.182931][ C0] ? may_create+0x60c/0x810
[ 465.182950][ C0] ext4_mknod+0x235/0x4a0
[ 465.182974][ C0] ? __cfi_ext4_mknod+0x10/0x10
[ 465.182995][ C0] ? selinux_inode_mknod+0x7b/0xa0
[ 465.183012][ C0] ? security_inode_mknod+0xdc/0x120
[ 465.183030][ C0] vfs_mknod+0x464/0x4f0
[ 465.183049][ C0] unix_bind+0x499/0xe40
[ 465.183079][ C0] ? memcpy+0x56/0x70
[ 465.183094][ C0] ? __cfi_unix_bind+0x10/0x10
[ 465.183115][ C0] ? security_socket_bind+0x93/0xb0
[ 465.183132][ C0] __sys_bind+0x311/0x420
[ 465.183149][ C0] ? __se_sys_futex+0x273/0x2e0
[ 465.183163][ C0] ? __cfi___sys_bind+0x10/0x10
[ 465.183182][ C0] ? debug_smp_processor_id+0x17/0x20
[ 465.183199][ C0] __x64_sys_bind+0x7a/0x90
[ 465.183215][ C0] x64_sys_call+0x70c/0x9a0
[ 465.183234][ C0] do_syscall_64+0x4c/0xa0
[ 465.183252][ C0] ? clear_bhb_loop+0x30/0x80
[ 465.183274][ C0] ? clear_bhb_loop+0x30/0x80
[ 465.183298][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 465.183320][ C0] RIP: 0033:0x7fb4a6f8f749
[ 465.183343][ C0] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 465.183354][ C0] RSP: 002b:00007ffff5feea48 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
[ 465.183368][ C0] RAX: ffffffffffffffda RBX: 00007fb4a71e5fa0 RCX: 00007fb4a6f8f749
[ 465.183379][ C0] RDX: 000000000000006e RSI: 00002000000000c0 RDI: 0000000000000004
[ 465.183388][ C0] RBP: 00007fb4a7013f91 R08: 0000000000000000 R09: 0000000000000000
[ 465.183397][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 465.183405][ C0] R13: 00007fb4a71e5fa0 R14: 00007fb4a71e5fa0 R15: 0000000000000003
[ 465.183418][ C0]
[ 488.044996][ T29] INFO: task kworker/u4:2:43 blocked for more than 161 seconds.
[ 488.052776][ T29] Not tainted syzkaller #0
[ 488.057837][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 488.066581][ T29] task:kworker/u4:2 state:D stack:23200 pid:43 ppid:2 flags:0x00004000
[ 488.075875][ T29] Workqueue: events_unbound linkwatch_event
[ 488.081801][ T29] Call Trace:
[ 488.085146][ T29]
[ 488.088108][ T29] __schedule+0xb87/0x14e0
[ 488.092527][ T29] ? __sched_text_start+0x8/0x8
[ 489.054770][ T29] ? __mutex_add_waiter+0x17b/0x270
[ 489.060046][ T29] ? __kasan_check_write+0x14/0x20
[ 489.065204][ T29] ? kthread_data+0x50/0xc0
[ 489.069731][ T29] ? wq_worker_sleeping+0x64/0x280
[ 489.074905][ T29] schedule+0xbd/0x170
[ 489.078994][ T29] schedule_preempt_disabled+0x13/0x20
[ 489.084479][ T29] __mutex_lock+0x74a/0x16d0
[ 489.089147][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 490.045207][ T29] ? __kasan_check_write+0x14/0x20
[ 490.050403][ T29] ? __switch_to+0x51f/0xe30
[ 490.055069][ T29] ? __cfi___switch_to+0x10/0x10
[ 490.060093][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 490.065049][ T29] __mutex_lock_slowpath+0xe/0x10
[ 490.070124][ T29] mutex_lock+0xf8/0x1a0
[ 490.074386][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 490.079316][ T29] ? __schedule+0xb8f/0x14e0
[ 490.083925][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 490.089560][ T29] rtnl_lock+0x15/0x20
[ 490.093650][ T29] linkwatch_event+0xe/0x60
[ 491.044922][ T29] process_one_work+0x71f/0xc40
[ 491.049818][ T29] worker_thread+0xa29/0x11f0
[ 491.054487][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 491.060078][ T29] kthread+0x281/0x320
[ 491.064251][ T29] ? __cfi_worker_thread+0x10/0x10
[ 491.069425][ T29] ? __cfi_kthread+0x10/0x10
[ 491.074044][ T29] ret_from_fork+0x1f/0x30
[ 491.078525][ T29]
[ 491.081583][ T29] INFO: task syz-executor:399 blocked for more than 164 seconds.
[ 491.089348][ T29] Not tainted syzkaller #0
[ 491.094286][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 492.055081][ T29] task:syz-executor state:D stack:23264 pid:399 ppid:1 flags:0x00004004
[ 492.064349][ T29] Call Trace:
[ 492.067715][ T29]
[ 492.070700][ T29] __schedule+0xb87/0x14e0
[ 492.075222][ T29] ? __kasan_check_write+0x14/0x20
[ 492.080344][ T29] ? __sched_text_start+0x8/0x8
[ 492.085243][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 492.091066][ T29] ? prepare_to_wait_event+0x40b/0x440
[ 493.045325][ T29] schedule+0xbd/0x170
[ 493.049458][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 493.055185][ T29] ? kasan_quarantine_put+0x34/0x190
[ 493.060504][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 493.066717][ T29] ? ____kasan_slab_free+0x13d/0x180
[ 493.072022][ T29] ? __kasan_slab_free+0x11/0x20
[ 493.077017][ T29] ? slab_free_freelist_hook+0xc2/0x190
[ 493.082587][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 493.087929][ T29] ? __kmem_cache_free+0xb7/0x1b0
[ 493.093000][ T29] ? __kasan_check_write+0x14/0x20
[ 494.045164][ T29] ? kobject_put+0x1bb/0x280
[ 494.049866][ T29] ? __cfi_netdev_queue_release+0x10/0x10
[ 494.055693][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 494.061771][ T29] ? netdev_queue_update_kobjects+0x428/0x470
[ 494.067924][ T29] ? __x64_sys_sendto+0xe5/0x100
[ 494.072886][ T29] ? x64_sys_call+0x83/0x9a0
[ 494.077573][ T29] ? __kasan_check_read+0x11/0x20
[ 494.082620][ T29] netif_set_real_num_tx_queues+0x4c9/0x7f0
[ 494.088571][ T29] veth_newlink+0x874/0xbe0
[ 494.093123][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 495.045335][ T29] ? rtnl_create_link+0x88d/0xb10
[ 495.050432][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 495.055561][ T29] rtnl_newlink+0x14b9/0x2030
[ 495.060256][ T29] ? memcpy+0x56/0x70
[ 495.064238][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 495.069350][ T29] ? selinux_capable+0x29c/0x380
[ 495.074302][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 495.079627][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 495.084497][ T29] ? ns_capable+0x8c/0xf0
[ 495.088858][ T29] ? netlink_net_capable+0x125/0x160
[ 495.094184][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 496.055134][ T29] rtnetlink_rcv_msg+0x9f4/0xcf0
[ 496.060175][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 496.065906][ T29] ? kernel_text_address+0xa0/0xd0
[ 496.071053][ T29] ? __kernel_text_address+0xd/0x30
[ 496.076469][ T29] ? unwind_get_return_address+0x4d/0x90
[ 496.082133][ T29] ? memcpy+0x56/0x70
[ 496.086205][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 496.091654][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 497.044758][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 497.050106][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 497.055779][ T29] ? __alloc_skb+0xea/0x4b0
[ 497.060363][ T29] ? avc_has_perm+0x158/0x240
[ 497.065105][ T29] ? __alloc_skb+0x236/0x4b0
[ 497.069713][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 497.074649][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 497.079735][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 497.085185][ T29] netlink_rcv_skb+0x1f2/0x440
[ 497.089961][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 498.045214][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 498.050638][ T29] ? __netlink_lookup+0x387/0x3b0
[ 498.055770][ T29] rtnetlink_rcv+0x1c/0x20
[ 498.060240][ T29] netlink_unicast+0x8ab/0xa30
[ 498.065070][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 498.069842][ T29] ? kasan_save_alloc_info+0x25/0x30
[ 498.075189][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 498.080496][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 498.086013][ T29] __sys_sendto+0x464/0x5e0
[ 498.090531][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 499.045059][ T29] ? errseq_sample+0x44/0x70
[ 499.049719][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 499.055354][ T29] ? xfd_validate_state+0x70/0x150
[ 499.060542][ T29] __x64_sys_sendto+0xe5/0x100
[ 499.065408][ T29] x64_sys_call+0x83/0x9a0
[ 499.069910][ T29] do_syscall_64+0x4c/0xa0
[ 499.074349][ T29] ? clear_bhb_loop+0x30/0x80
[ 499.079080][ T29] ? clear_bhb_loop+0x30/0x80
[ 499.083812][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 499.089785][ T29] RIP: 0033:0x7f9c91791583
[ 499.094194][ T29] RSP: 002b:00007ffd64867558 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 500.045356][ T29] RAX: ffffffffffffffda RBX: 00007f9c92514620 RCX: 00007f9c91791583
[ 500.053391][ T29] RDX: 000000000000002c RSI: 00007f9c92514670 RDI: 0000000000000003
[ 500.061486][ T29] RBP: 0000000000000001 R08: 00007ffd64867574 R09: 000000000000000c
[ 500.069561][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 500.077700][ T29] R13: 0000000000000000 R14: 00007f9c92514670 R15: 0000000000000000
[ 500.085822][ T29]
[ 500.088874][ T29] NMI backtrace for cpu 1
[ 500.093236][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 500.100424][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 500.110574][ T29] Call Trace:
[ 500.113845][ T29]
[ 500.116774][ T29] __dump_stack+0x21/0x24
[ 500.121119][ T29] dump_stack_lvl+0xee/0x150
[ 500.125698][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 500.130744][ T29] dump_stack+0x15/0x24
[ 500.134908][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 500.139845][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 500.145381][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 500.150835][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 500.155766][ T29] ? memcpy+0x56/0x70
[ 500.159739][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 500.165733][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 500.171723][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 500.177614][ T29] watchdog+0xd44/0xe80
[ 500.181770][ T29] ? __cfi_watchdog+0x10/0x10
[ 500.186446][ T29] ? __kasan_check_read+0x11/0x20
[ 500.191478][ T29] ? __kthread_parkme+0x142/0x180
[ 500.196498][ T29] kthread+0x281/0x320
[ 500.200563][ T29] ? __cfi_watchdog+0x10/0x10
[ 500.205255][ T29] ? __cfi_kthread+0x10/0x10
[ 500.209841][ T29] ret_from_fork+0x1f/0x30
[ 500.214251][ T29]
[ 500.217335][ T29] Sending NMI from CPU 1 to CPUs 0:
[ 500.222548][ C0] NMI backtrace for cpu 0
[ 500.222557][ C0] CPU: 0 PID: 393 Comm: syz.3.18 Not tainted syzkaller #0
[ 500.222573][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 500.222582][ C0] RIP: 0010:from_kuid+0x78/0x670
[ 500.222601][ C0] Code: 6c 81 4c 8d 64 24 20 49 c1 ec 03 48 b8 f1 f1 f1 f1 00 04 f3 f3 4b 89 04 2c e8 e4 1e 04 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 62 04 00 00 45 8b 3e bf 06 00 00 00 44 89 fe e8 e0 22
[ 500.222614][ C0] RSP: 0018:ffffc90000bf7080 EFLAGS: 00000a02
[ 500.222629][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88811738a880
[ 500.222640][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff86ef8460
[ 500.222650][ C0] RBP: ffffc90000bf7130 R08: dffffc0000000000 R09: ffffed10230b7a0d
[ 500.222662][ C0] R10: ffffed10230b7a0d R11: 1ffff110230b7a0c R12: 1ffff9200017ee14
[ 500.222674][ C0] R13: dffffc0000000000 R14: ffffffff86ef8460 R15: ffff8881185bd17c
[ 500.222686][ C0] FS: 000055556cd28500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 500.222701][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 500.222712][ C0] CR2: 00007f0439f15000 CR3: 00000001132e5000 CR4: 00000000003506b0
[ 500.222726][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 500.222735][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 500.222745][ C0] Call Trace:
[ 500.222749][ C0]
[ 500.222755][ C0] ? __cfi_from_kuid+0x10/0x10
[ 500.222771][ C0] ? __ext4_get_inode_loc+0x5b9/0xdf0
[ 500.222793][ C0] ext4_fill_raw_inode+0x374/0x2540
[ 500.222817][ C0] ? __cfi__raw_spin_lock+0x10/0x10
[ 500.222836][ C0] ? ext4_fc_track_inode+0xe4/0x6f0
[ 500.222851][ C0] ext4_mark_iloc_dirty+0x574/0x1930
[ 500.222873][ C0] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 500.222892][ C0] ? ext4_reserve_inode_write+0x240/0x2e0
[ 500.222914][ C0] __ext4_mark_inode_dirty+0x423/0x600
[ 500.222934][ C0] ext4_dirty_inode+0xbd/0x100
[ 500.222954][ C0] ? __cfi_ext4_dirty_inode+0x10/0x10
[ 500.222976][ C0] __mark_inode_dirty+0x203/0x9d0
[ 500.222994][ C0] ext4_xattr_block_set+0x167d/0x3270
[ 500.223023][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 500.223045][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 500.223067][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 500.223093][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 500.223114][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 500.223134][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 500.223152][ C0] ext4_initxattrs+0xa6/0x110
[ 500.223169][ C0] security_inode_init_security+0x28c/0x3a0
[ 500.223186][ C0] ? posix_acl_create+0x118/0x440
[ 500.223207][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 500.223235][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 500.223253][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 500.223271][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 500.223292][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 500.223307][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 500.223328][ C0] ext4_init_security+0x34/0x40
[ 500.223344][ C0] __ext4_new_inode+0x2c29/0x3640
[ 500.223369][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 500.223390][ C0] ? dquot_initialize+0x20/0x20
[ 500.223408][ C0] ? may_create+0x60c/0x810
[ 500.223427][ C0] ext4_mknod+0x235/0x4a0
[ 500.223449][ C0] ? __cfi_ext4_mknod+0x10/0x10
[ 500.223469][ C0] ? selinux_inode_mknod+0x7b/0xa0
[ 500.223484][ C0] ? security_inode_mknod+0xdc/0x120
[ 500.223501][ C0] vfs_mknod+0x464/0x4f0
[ 500.223518][ C0] unix_bind+0x499/0xe40
[ 500.223537][ C0] ? memcpy+0x56/0x70
[ 500.223552][ C0] ? __cfi_unix_bind+0x10/0x10
[ 500.223571][ C0] ? security_socket_bind+0x93/0xb0
[ 500.223587][ C0] __sys_bind+0x311/0x420
[ 500.223602][ C0] ? __se_sys_futex+0x273/0x2e0
[ 500.223615][ C0] ? __cfi___sys_bind+0x10/0x10
[ 500.223632][ C0] ? debug_smp_processor_id+0x17/0x20
[ 500.223647][ C0] __x64_sys_bind+0x7a/0x90
[ 500.223663][ C0] x64_sys_call+0x70c/0x9a0
[ 500.223680][ C0] do_syscall_64+0x4c/0xa0
[ 500.223696][ C0] ? clear_bhb_loop+0x30/0x80
[ 500.223717][ C0] ? clear_bhb_loop+0x30/0x80
[ 500.223738][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 500.223759][ C0] RIP: 0033:0x7fb4a6f8f749
[ 500.223771][ C0] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 500.223782][ C0] RSP: 002b:00007ffff5feea48 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
[ 500.223797][ C0] RAX: ffffffffffffffda RBX: 00007fb4a71e5fa0 RCX: 00007fb4a6f8f749
[ 500.223807][ C0] RDX: 000000000000006e RSI: 00002000000000c0 RDI: 0000000000000004
[ 500.223817][ C0] RBP: 00007fb4a7013f91 R08: 0000000000000000 R09: 0000000000000000
[ 500.223826][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 500.223834][ C0] R13: 00007fb4a71e5fa0 R14: 00007fb4a71e5fa0 R15: 0000000000000003
[ 500.223847][ C0]
[ 523.044722][ T29] INFO: task kworker/u4:2:43 blocked for more than 196 seconds.
[ 523.052396][ T29] Not tainted syzkaller #0
[ 523.057434][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 523.066125][ T29] task:kworker/u4:2 state:D stack:23200 pid:43 ppid:2 flags:0x00004000
[ 523.075358][ T29] Workqueue: events_unbound linkwatch_event
[ 523.081363][ T29] Call Trace:
[ 523.084688][ T29]
[ 523.087630][ T29] __schedule+0xb87/0x14e0
[ 523.092048][ T29] ? __sched_text_start+0x8/0x8
[ 524.045749][ T29] ? __mutex_add_waiter+0x17b/0x270
[ 524.051014][ T29] ? __kasan_check_write+0x14/0x20
[ 524.056322][ T29] ? kthread_data+0x50/0xc0
[ 524.060858][ T29] ? wq_worker_sleeping+0x64/0x280
[ 524.066045][ T29] schedule+0xbd/0x170
[ 524.070130][ T29] schedule_preempt_disabled+0x13/0x20
[ 524.075651][ T29] __mutex_lock+0x74a/0x16d0
[ 524.080312][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 524.087148][ T29] ? __kasan_check_write+0x14/0x20
[ 524.092276][ T29] ? __switch_to+0x51f/0xe30
[ 525.044815][ T29] ? __cfi___switch_to+0x10/0x10
[ 525.049846][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 525.054791][ T29] __mutex_lock_slowpath+0xe/0x10
[ 525.059853][ T29] mutex_lock+0xf8/0x1a0
[ 525.064095][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 525.069006][ T29] ? __schedule+0xb8f/0x14e0
[ 525.073615][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 525.079221][ T29] rtnl_lock+0x15/0x20
[ 525.083300][ T29] linkwatch_event+0xe/0x60
[ 525.087843][ T29] process_one_work+0x71f/0xc40
[ 525.092720][ T29] worker_thread+0xa29/0x11f0
[ 526.046436][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 526.051964][ T29] kthread+0x281/0x320
[ 526.056197][ T29] ? __cfi_worker_thread+0x10/0x10
[ 526.061330][ T29] ? __cfi_kthread+0x10/0x10
[ 526.065981][ T29] ret_from_fork+0x1f/0x30
[ 526.070416][ T29]
[ 526.073452][ T29] INFO: task kworker/0:2:332 blocked for more than 137 seconds.
[ 526.081161][ T29] Not tainted syzkaller #0
[ 526.086135][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 527.044965][ T29] task:kworker/0:2 state:D stack:25536 pid:332 ppid:2 flags:0x00004000
[ 527.054247][ T29] Workqueue: ipv6_addrconf addrconf_verify_work
[ 527.060573][ T29] Call Trace:
[ 527.063922][ T29]
[ 527.066898][ T29] __schedule+0xb87/0x14e0
[ 527.071338][ T29] ? __sched_text_start+0x8/0x8
[ 527.076275][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 527.081500][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 527.086798][ T29] schedule+0xbd/0x170
[ 527.090899][ T29] schedule_preempt_disabled+0x13/0x20
[ 528.045274][ T29] __mutex_lock+0x74a/0x16d0
[ 528.049975][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 528.056836][ T29] ? __mod_timer+0x856/0xbf0
[ 528.061461][ T29] ? add_timer+0x68/0x80
[ 528.065766][ T29] ? queue_delayed_work_on+0x101/0x150
[ 528.071243][ T29] __mutex_lock_slowpath+0xe/0x10
[ 528.076322][ T29] mutex_lock+0xf8/0x1a0
[ 528.080590][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 528.085503][ T29] ? _raw_spin_lock_irq+0x8f/0xe0
[ 528.090572][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 529.055064][ T29] ? wg_ratelimiter_gc_entries+0x404/0x430
[ 529.060951][ T29] rtnl_lock+0x15/0x20
[ 529.065261][ T29] addrconf_verify_work+0x19/0x30
[ 529.079959][ T29] process_one_work+0x71f/0xc40
[ 529.085035][ T29] worker_thread+0xa29/0x11f0
[ 530.046221][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 530.051776][ T29] ? __kthread_parkme+0x142/0x180
[ 530.056884][ T29] kthread+0x281/0x320
[ 530.061009][ T29] ? __cfi_worker_thread+0x10/0x10
[ 530.066188][ T29] ? __cfi_kthread+0x10/0x10
[ 530.070802][ T29] ret_from_fork+0x1f/0x30
[ 530.075409][ T29]
[ 530.078500][ T29] INFO: task syz-executor:399 blocked for more than 203 seconds.
[ 530.086380][ T29] Not tainted syzkaller #0
[ 530.091399][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 531.044733][ T29] task:syz-executor state:D stack:23264 pid:399 ppid:1 flags:0x00004004
[ 531.053998][ T29] Call Trace:
[ 531.057449][ T29]
[ 531.060455][ T29] __schedule+0xb87/0x14e0
[ 531.064916][ T29] ? __kasan_check_write+0x14/0x20
[ 531.070130][ T29] ? __sched_text_start+0x8/0x8
[ 531.075050][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 531.080859][ T29] ? prepare_to_wait_event+0x40b/0x440
[ 531.086377][ T29] schedule+0xbd/0x170
[ 531.090460][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 532.046031][ T29] ? kasan_quarantine_put+0x34/0x190
[ 532.051390][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 532.057665][ T29] ? ____kasan_slab_free+0x13d/0x180
[ 532.063056][ T29] ? __kasan_slab_free+0x11/0x20
[ 532.068031][ T29] ? slab_free_freelist_hook+0xc2/0x190
[ 532.073586][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 532.078922][ T29] ? __kmem_cache_free+0xb7/0x1b0
[ 532.083985][ T29] ? __kasan_check_write+0x14/0x20
[ 532.089127][ T29] ? kobject_put+0x1bb/0x280
[ 532.093740][ T29] ? __cfi_netdev_queue_release+0x10/0x10
[ 533.044929][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 533.051069][ T29] ? netdev_queue_update_kobjects+0x428/0x470
[ 533.057194][ T29] ? __x64_sys_sendto+0xe5/0x100
[ 533.062221][ T29] ? x64_sys_call+0x83/0x9a0
[ 533.066876][ T29] ? __kasan_check_read+0x11/0x20
[ 533.071970][ T29] netif_set_real_num_tx_queues+0x4c9/0x7f0
[ 533.077911][ T29] veth_newlink+0x874/0xbe0
[ 533.082430][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 533.087510][ T29] ? rtnl_create_link+0x88d/0xb10
[ 533.092581][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 534.045218][ T29] rtnl_newlink+0x14b9/0x2030
[ 534.050001][ T29] ? memcpy+0x56/0x70
[ 534.054096][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 534.059215][ T29] ? selinux_capable+0x29c/0x380
[ 534.064244][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 534.069571][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 534.074425][ T29] ? ns_capable+0x8c/0xf0
[ 534.078832][ T29] ? netlink_net_capable+0x125/0x160
[ 534.084137][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 534.089231][ T29] rtnetlink_rcv_msg+0x9f4/0xcf0
[ 534.094253][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 535.054914][ T29] ? kernel_text_address+0xa0/0xd0
[ 535.060075][ T29] ? __kernel_text_address+0xd/0x30
[ 535.065462][ T29] ? unwind_get_return_address+0x4d/0x90
[ 535.071122][ T29] ? memcpy+0x56/0x70
[ 535.075167][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 535.080564][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 535.086384][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 535.091697][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 536.045084][ T29] ? __alloc_skb+0xea/0x4b0
[ 536.049685][ T29] ? avc_has_perm+0x158/0x240
[ 536.054444][ T29] ? __alloc_skb+0x236/0x4b0
[ 536.059096][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 536.064530][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 536.069655][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 536.075135][ T29] netlink_rcv_skb+0x1f2/0x440
[ 536.079914][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 536.085435][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 536.090773][ T29] ? __netlink_lookup+0x387/0x3b0
[ 537.044918][ T29] rtnetlink_rcv+0x1c/0x20
[ 537.049407][ T29] netlink_unicast+0x8ab/0xa30
[ 537.054197][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 537.059048][ T29] ? kasan_save_alloc_info+0x25/0x30
[ 537.064506][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 537.069895][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 537.075428][ T29] __sys_sendto+0x464/0x5e0
[ 537.080068][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 537.085142][ T29] ? errseq_sample+0x44/0x70
[ 537.089755][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 538.045125][ T29] ? xfd_validate_state+0x70/0x150
[ 538.050351][ T29] __x64_sys_sendto+0xe5/0x100
[ 538.055196][ T29] x64_sys_call+0x83/0x9a0
[ 538.059626][ T29] do_syscall_64+0x4c/0xa0
[ 538.064046][ T29] ? clear_bhb_loop+0x30/0x80
[ 538.068816][ T29] ? clear_bhb_loop+0x30/0x80
[ 538.073523][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 538.079489][ T29] RIP: 0033:0x7f9c91791583
[ 538.083916][ T29] RSP: 002b:00007ffd64867558 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 538.092364][ T29] RAX: ffffffffffffffda RBX: 00007f9c92514620 RCX: 00007f9c91791583
[ 539.054689][ T29] RDX: 000000000000002c RSI: 00007f9c92514670 RDI: 0000000000000003
[ 539.062708][ T29] RBP: 0000000000000001 R08: 00007ffd64867574 R09: 000000000000000c
[ 539.070802][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 539.078840][ T29] R13: 0000000000000000 R14: 00007f9c92514670 R15: 0000000000000000
[ 539.086943][ T29]
[ 539.089979][ T29] INFO: task syz-executor:401 blocked for more than 150 seconds.
[ 540.045021][ T29] Not tainted syzkaller #0
[ 540.050131][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 540.058867][ T29] task:syz-executor state:D stack:28304 pid:401 ppid:1 flags:0x00004004
[ 540.068167][ T29] Call Trace:
[ 540.071475][ T29]
[ 540.074457][ T29] __schedule+0xb87/0x14e0
[ 540.078962][ T29] ? __sched_text_start+0x8/0x8
[ 540.083822][ T29] ? __mutex_add_waiter+0xc7/0x270
[ 540.088997][ T29] ? __kasan_check_write+0x14/0x20
[ 540.094128][ T29] ? trace_contention_begin+0xa0/0xa0
[ 541.045279][ T29] schedule+0xbd/0x170
[ 541.049411][ T29] schedule_preempt_disabled+0x13/0x20
[ 541.054945][ T29] __mutex_lock+0x74a/0x16d0
[ 541.059595][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 541.066434][ T29] ? selinux_capable+0x29c/0x380
[ 541.071385][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 541.076761][ T29] ? kvm_sched_clock_read+0x18/0x40
[ 541.082076][ T29] ? __reset_page_owner+0x190/0x190
[ 541.087413][ T29] ? cap_capable+0x1aa/0x230
[ 541.092050][ T29] __mutex_lock_slowpath+0xe/0x10
[ 542.046345][ T29] mutex_lock+0xf8/0x1a0
[ 542.050659][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 542.055946][ T29] ? ns_capable+0x8c/0xf0
[ 542.060440][ T29] ? netlink_net_capable+0x125/0x160
[ 542.065782][ T29] rtnetlink_rcv_msg+0x8c6/0xcf0
[ 542.070730][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 542.076290][ T29] ? kernel_text_address+0xa0/0xd0
[ 542.081441][ T29] ? __kernel_text_address+0xd/0x30
[ 542.086684][ T29] ? unwind_get_return_address+0x4d/0x90
[ 542.092334][ T29] ? memcpy+0x56/0x70
[ 543.044955][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 543.050397][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 543.056217][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 543.061571][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 543.067300][ T29] ? __alloc_skb+0xea/0x4b0
[ 543.071820][ T29] ? avc_has_perm+0x158/0x240
[ 543.076567][ T29] ? __alloc_skb+0x236/0x4b0
[ 543.081208][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 543.086233][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 543.091286][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 544.045060][ T29] netlink_rcv_skb+0x1f2/0x440
[ 544.049931][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 544.055920][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 544.061378][ T29] ? __netlink_lookup+0x387/0x3b0
[ 544.066504][ T29] rtnetlink_rcv+0x1c/0x20
[ 544.070947][ T29] netlink_unicast+0x8ab/0xa30
[ 544.075773][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 544.080553][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 544.085872][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 544.091364][ T29] __sys_sendto+0x464/0x5e0
[ 545.045173][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 545.050357][ T29] ? do_user_addr_fault+0x9ac/0x1050
[ 545.055775][ T29] __x64_sys_sendto+0xe5/0x100
[ 545.060566][ T29] x64_sys_call+0x83/0x9a0
[ 545.065037][ T29] do_syscall_64+0x4c/0xa0
[ 545.069465][ T29] ? clear_bhb_loop+0x30/0x80
[ 545.074155][ T29] ? clear_bhb_loop+0x30/0x80
[ 545.078905][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 545.084867][ T29] RIP: 0033:0x7fd561d91583
[ 545.089379][ T29] RSP: 002b:00007ffd7ba98e48 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 546.045354][ T29] RAX: ffffffffffffffda RBX: 00007fd562b14620 RCX: 00007fd561d91583
[ 546.053466][ T29] RDX: 0000000000000028 RSI: 00007fd562b14670 RDI: 0000000000000003
[ 546.061588][ T29] RBP: 0000000000000001 R08: 00007ffd7ba98e64 R09: 000000000000000c
[ 546.069595][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 546.077627][ T29] R13: 0000000000000000 R14: 00007fd562b14670 R15: 0000000000000000
[ 546.085652][ T29]
[ 546.088708][ T29] NMI backtrace for cpu 1
[ 546.093045][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 546.100233][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 546.110309][ T29] Call Trace:
[ 546.113581][ T29]
[ 546.116510][ T29] __dump_stack+0x21/0x24
[ 546.120868][ T29] dump_stack_lvl+0xee/0x150
[ 546.125451][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 546.130576][ T29] dump_stack+0x15/0x24
[ 546.134731][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 546.139748][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 546.145292][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 546.150745][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 546.155712][ T29] ? memcpy+0x56/0x70
[ 546.159684][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 546.165673][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 546.171652][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 546.177541][ T29] watchdog+0xd44/0xe80
[ 546.181726][ T29] ? __cfi_watchdog+0x10/0x10
[ 546.186406][ T29] ? __kasan_check_read+0x11/0x20
[ 546.191434][ T29] ? __kthread_parkme+0x142/0x180
[ 546.196484][ T29] kthread+0x281/0x320
[ 546.200556][ T29] ? __cfi_watchdog+0x10/0x10
[ 546.205228][ T29] ? __cfi_kthread+0x10/0x10
[ 546.209814][ T29] ret_from_fork+0x1f/0x30
[ 546.214223][ T29]
[ 546.217286][ T29] Sending NMI from CPU 1 to CPUs 0:
[ 546.222512][ C0] NMI backtrace for cpu 0
[ 546.222521][ C0] CPU: 0 PID: 393 Comm: syz.3.18 Not tainted syzkaller #0
[ 546.222535][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 546.222543][ C0] RIP: 0010:__mark_inode_dirty+0x20a/0x9d0
[ 546.222565][ C0] Code: 74 23 e8 89 03 a7 ff 44 89 f6 81 e6 03 08 00 00 4c 89 ef 41 ba a3 b7 07 fb 44 03 53 fc 74 02 0f 0b ff d3 eb 05 e8 66 03 a7 ff <0f> 1f 44 00 00 e8 5c 03 a7 ff 41 81 e6 ff f7 ff ff c6 45 d7 01 f0
[ 546.222578][ C0] RSP: 0018:ffffc90000bf73b0 EFLAGS: 00000286
[ 546.222591][ C0] RAX: 0000000000000000 RBX: ffffffff81e94310 RCX: dffffc0000000000
[ 546.222602][ C0] RDX: 0000000000000000 RSI: 00000000000017f8 RDI: ffffffff86455105
[ 546.222612][ C0] RBP: ffffc90000bf73f0 R08: dffffc0000000000 R09: ffffed10246e4df0
[ 546.222623][ C0] R10: ffffed10246e4df0 R11: 1ffff110246e4def R12: ffff8881185bd210
[ 546.222634][ C0] R13: ffff8881185bd178 R14: 0000000000000001 R15: ffffffff85948ff8
[ 546.222645][ C0] FS: 000055556cd28500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 546.222658][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 546.222668][ C0] CR2: 000000c006fdb010 CR3: 00000001132e5000 CR4: 00000000003506b0
[ 546.222682][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 546.222691][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 546.222700][ C0] Call Trace:
[ 546.222704][ C0]
[ 546.222711][ C0] ext4_xattr_block_set+0x186e/0x3270
[ 546.222746][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 546.222767][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 546.222788][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 546.222811][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 546.222830][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 546.222848][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 546.222865][ C0] ext4_initxattrs+0xa6/0x110
[ 546.222881][ C0] security_inode_init_security+0x28c/0x3a0
[ 546.222898][ C0] ? posix_acl_create+0x118/0x440
[ 546.222918][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 546.222933][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 546.222951][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 546.222969][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 546.222989][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 546.223004][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 546.223021][ C0] ext4_init_security+0x34/0x40
[ 546.223037][ C0] __ext4_new_inode+0x2c29/0x3640
[ 546.223062][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 546.223084][ C0] ? dquot_initialize+0x20/0x20
[ 546.223102][ C0] ? may_create+0x60c/0x810
[ 546.223120][ C0] ext4_mknod+0x235/0x4a0
[ 546.223142][ C0] ? __cfi_ext4_mknod+0x10/0x10
[ 546.223161][ C0] ? selinux_inode_mknod+0x7b/0xa0
[ 546.223177][ C0] ? security_inode_mknod+0xdc/0x120
[ 546.223193][ C0] vfs_mknod+0x464/0x4f0
[ 546.223211][ C0] unix_bind+0x499/0xe40
[ 546.223231][ C0] ? memcpy+0x56/0x70
[ 546.223245][ C0] ? __cfi_unix_bind+0x10/0x10
[ 546.223265][ C0] ? security_socket_bind+0x93/0xb0
[ 546.223280][ C0] __sys_bind+0x311/0x420
[ 546.223295][ C0] ? __se_sys_futex+0x273/0x2e0
[ 546.223308][ C0] ? __cfi___sys_bind+0x10/0x10
[ 546.223326][ C0] ? debug_smp_processor_id+0x17/0x20
[ 546.223341][ C0] __x64_sys_bind+0x7a/0x90
[ 546.223356][ C0] x64_sys_call+0x70c/0x9a0
[ 546.223374][ C0] do_syscall_64+0x4c/0xa0
[ 546.223390][ C0] ? clear_bhb_loop+0x30/0x80
[ 546.223411][ C0] ? clear_bhb_loop+0x30/0x80
[ 546.223432][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 546.223453][ C0] RIP: 0033:0x7fb4a6f8f749
[ 546.223464][ C0] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 546.223476][ C0] RSP: 002b:00007ffff5feea48 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
[ 546.223490][ C0] RAX: ffffffffffffffda RBX: 00007fb4a71e5fa0 RCX: 00007fb4a6f8f749
[ 546.223501][ C0] RDX: 000000000000006e RSI: 00002000000000c0 RDI: 0000000000000004
[ 546.223510][ C0] RBP: 00007fb4a7013f91 R08: 0000000000000000 R09: 0000000000000000
[ 546.223519][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 546.223528][ C0] R13: 00007fb4a71e5fa0 R14: 00007fb4a71e5fa0 R15: 0000000000000003
[ 546.223540][ C0]
[ 569.044707][ T29] INFO: task kworker/u4:2:43 blocked for more than 242 seconds.
[ 569.052427][ T29] Not tainted syzkaller #0
[ 569.057427][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 569.066131][ T29] task:kworker/u4:2 state:D stack:23200 pid:43 ppid:2 flags:0x00004000
[ 569.075457][ T29] Workqueue: events_unbound linkwatch_event
[ 569.081376][ T29] Call Trace:
[ 569.084778][ T29]
[ 569.087721][ T29] __schedule+0xb87/0x14e0
[ 569.092146][ T29] ? __sched_text_start+0x8/0x8
[ 570.045235][ T29] ? __mutex_add_waiter+0x17b/0x270
[ 570.050592][ T29] ? __kasan_check_write+0x14/0x20
[ 570.056092][ T29] ? kthread_data+0x50/0xc0
[ 570.060637][ T29] ? wq_worker_sleeping+0x64/0x280
[ 570.065796][ T29] schedule+0xbd/0x170
[ 570.069905][ T29] schedule_preempt_disabled+0x13/0x20
[ 570.075436][ T29] __mutex_lock+0x74a/0x16d0
[ 570.080045][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 570.086851][ T29] ? __kasan_check_write+0x14/0x20
[ 570.091983][ T29] ? __switch_to+0x51f/0xe30
[ 571.045010][ T29] ? __cfi___switch_to+0x10/0x10
[ 571.049998][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 571.054943][ T29] __mutex_lock_slowpath+0xe/0x10
[ 571.060049][ T29] mutex_lock+0xf8/0x1a0
[ 571.064330][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 571.069225][ T29] ? __schedule+0xb8f/0x14e0
[ 571.073863][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 571.079482][ T29] rtnl_lock+0x15/0x20
[ 571.083556][ T29] linkwatch_event+0xe/0x60
[ 571.088125][ T29] process_one_work+0x71f/0xc40
[ 571.092997][ T29] worker_thread+0xa29/0x11f0
[ 572.045498][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 572.051032][ T29] kthread+0x281/0x320
[ 572.055162][ T29] ? __cfi_worker_thread+0x10/0x10
[ 572.060319][ T29] ? __cfi_kthread+0x10/0x10
[ 572.065029][ T29] ret_from_fork+0x1f/0x30
[ 572.069480][ T29]
[ 572.072524][ T29] INFO: task kworker/0:2:332 blocked for more than 183 seconds.
[ 572.080243][ T29] Not tainted syzkaller #0
[ 572.085197][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 572.093875][ T29] task:kworker/0:2 state:D stack:25536 pid:332 ppid:2 flags:0x00004000
[ 573.054833][ T29] Workqueue: ipv6_addrconf addrconf_verify_work
[ 573.061156][ T29] Call Trace:
[ 573.064493][ T29]
[ 573.067575][ T29] __schedule+0xb87/0x14e0
[ 573.072080][ T29] ? __sched_text_start+0x8/0x8
[ 573.077027][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 573.082243][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 573.087506][ T29] schedule+0xbd/0x170
[ 573.091592][ T29] schedule_preempt_disabled+0x13/0x20
[ 574.045101][ T29] __mutex_lock+0x74a/0x16d0
[ 574.049777][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 574.056621][ T29] ? __mod_timer+0x856/0xbf0
[ 574.061293][ T29] ? add_timer+0x68/0x80
[ 574.065650][ T29] ? queue_delayed_work_on+0x101/0x150
[ 574.071158][ T29] __mutex_lock_slowpath+0xe/0x10
[ 574.076284][ T29] mutex_lock+0xf8/0x1a0
[ 574.080567][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 574.085491][ T29] ? _raw_spin_lock_irq+0x8f/0xe0
[ 574.090533][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 575.044771][ T29] ? wg_ratelimiter_gc_entries+0x404/0x430
[ 575.050636][ T29] rtnl_lock+0x15/0x20
[ 575.054805][ T29] addrconf_verify_work+0x19/0x30
[ 575.059849][ T29] process_one_work+0x71f/0xc40
[ 575.064759][ T29] worker_thread+0xa29/0x11f0
[ 575.069448][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 575.074992][ T29] ? __kthread_parkme+0x142/0x180
[ 575.080037][ T29] kthread+0x281/0x320
[ 575.084104][ T29] ? __cfi_worker_thread+0x10/0x10
[ 575.089264][ T29] ? __cfi_kthread+0x10/0x10
[ 575.093911][ T29] ret_from_fork+0x1f/0x30
[ 576.055035][ T29]
[ 576.058163][ T29] NMI backtrace for cpu 1
[ 576.062499][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 576.069693][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 576.079747][ T29] Call Trace:
[ 576.083017][ T29]
[ 576.085942][ T29] __dump_stack+0x21/0x24
[ 576.090268][ T29] dump_stack_lvl+0xee/0x150
[ 576.094855][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 576.099870][ T29] dump_stack+0x15/0x24
[ 576.104015][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 576.108950][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 576.114492][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 576.119950][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 576.124918][ T29] ? memcpy+0x56/0x70
[ 576.128907][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 576.134880][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 576.140872][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 576.146761][ T29] watchdog+0xd44/0xe80
[ 576.150917][ T29] ? __cfi_watchdog+0x10/0x10
[ 576.155588][ T29] ? __kasan_check_read+0x11/0x20
[ 576.160602][ T29] ? __kthread_parkme+0x142/0x180
[ 576.165627][ T29] kthread+0x281/0x320
[ 576.169689][ T29] ? __cfi_watchdog+0x10/0x10
[ 576.174380][ T29] ? __cfi_kthread+0x10/0x10
[ 576.178965][ T29] ret_from_fork+0x1f/0x30
[ 576.183392][ T29]
[ 576.186468][ T29] Sending NMI from CPU 1 to CPUs 0:
[ 576.191691][ C0] NMI backtrace for cpu 0
[ 576.191699][ C0] CPU: 0 PID: 393 Comm: syz.3.18 Not tainted syzkaller #0
[ 576.191715][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 576.191725][ C0] RIP: 0010:__sanitizer_cov_trace_cmp4+0x0/0x90
[ 576.191754][ C0] Code: 11 10 48 89 74 11 18 48 89 44 11 20 5d c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 b8 7d 47 2f 67 <55> 48 89 e5 48 8b 45 08 65 48 8b 15 00 42 92 7e 65 8b 0d 01 42 92
[ 576.191768][ C0] RSP: 0018:ffffc90000bf7388 EFLAGS: 00000246
[ 576.191783][ C0] RAX: 0000000000000000 RBX: 0000000048993a89 RCX: ffff88811738a880
[ 576.191794][ C0] RDX: 0000000000000000 RSI: 0000000048993a89 RDI: 0000000048993a89
[ 576.191805][ C0] RBP: ffffc90000bf73d0 R08: dffffc0000000000 R09: ffffed1022f08bed
[ 576.191817][ C0] R10: ffffed1022f08bed R11: 1ffff11022f08bec R12: ffff888123524640
[ 576.191830][ C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000048993a89
[ 576.191841][ C0] FS: 000055556cd28500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 576.191855][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 576.191867][ C0] CR2: 00007ffc3b645678 CR3: 00000001132e5000 CR4: 00000000003506b0
[ 576.191881][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 576.191891][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 576.191900][ C0] Call Trace:
[ 576.191905][ C0]
[ 576.191910][ C0] ? __entry_find+0x164/0x3d0
[ 576.191932][ C0] mb_cache_entry_find_first+0x1d/0x30
[ 576.191952][ C0] ext4_xattr_block_set+0xc46/0x3270
[ 576.191983][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 576.192006][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 576.192029][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 576.192055][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 576.192076][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 576.192097][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 576.192116][ C0] ext4_initxattrs+0xa6/0x110
[ 576.192139][ C0] security_inode_init_security+0x28c/0x3a0
[ 576.192157][ C0] ? posix_acl_create+0x118/0x440
[ 576.192179][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 576.192196][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 576.192215][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 576.192236][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 576.192257][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 576.192274][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 576.192294][ C0] ext4_init_security+0x34/0x40
[ 576.192311][ C0] __ext4_new_inode+0x2c29/0x3640
[ 576.192339][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 576.192363][ C0] ? dquot_initialize+0x20/0x20
[ 576.192383][ C0] ? may_create+0x60c/0x810
[ 576.192404][ C0] ext4_mknod+0x235/0x4a0
[ 576.192428][ C0] ? __cfi_ext4_mknod+0x10/0x10
[ 576.192450][ C0] ? selinux_inode_mknod+0x7b/0xa0
[ 576.192480][ C0] ? security_inode_mknod+0xdc/0x120
[ 576.192496][ C0] vfs_mknod+0x464/0x4f0
[ 576.192514][ C0] unix_bind+0x499/0xe40
[ 576.192543][ C0] ? memcpy+0x56/0x70
[ 576.192557][ C0] ? __cfi_unix_bind+0x10/0x10
[ 576.192593][ C0] ? security_socket_bind+0x93/0xb0
[ 576.192608][ C0] __sys_bind+0x311/0x420
[ 576.192624][ C0] ? __se_sys_futex+0x273/0x2e0
[ 576.192637][ C0] ? __cfi___sys_bind+0x10/0x10
[ 576.192654][ C0] ? debug_smp_processor_id+0x17/0x20
[ 576.192670][ C0] __x64_sys_bind+0x7a/0x90
[ 576.192685][ C0] x64_sys_call+0x70c/0x9a0
[ 576.192703][ C0] do_syscall_64+0x4c/0xa0
[ 576.192719][ C0] ? clear_bhb_loop+0x30/0x80
[ 576.192740][ C0] ? clear_bhb_loop+0x30/0x80
[ 576.192761][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 576.192782][ C0] RIP: 0033:0x7fb4a6f8f749
[ 576.192793][ C0] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 576.192805][ C0] RSP: 002b:00007ffff5feea48 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
[ 576.192819][ C0] RAX: ffffffffffffffda RBX: 00007fb4a71e5fa0 RCX: 00007fb4a6f8f749
[ 576.192829][ C0] RDX: 000000000000006e RSI: 00002000000000c0 RDI: 0000000000000004
[ 576.192838][ C0] RBP: 00007fb4a7013f91 R08: 0000000000000000 R09: 0000000000000000
[ 576.192849][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 576.192858][ C0] R13: 00007fb4a71e5fa0 R14: 00007fb4a71e5fa0 R15: 0000000000000003
[ 576.192870][ C0]