syzkaller
syzkaller login: [ 15.510879][ T28] kauditd_printk_skb: 3 callbacks suppressed
[ 15.510892][ T28] audit: type=1400 audit(1765564667.788:59): avc: denied { transition } for pid=224 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 15.514970][ T28] audit: type=1400 audit(1765564667.788:60): avc: denied { noatsecure } for pid=224 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 15.517648][ T28] audit: type=1400 audit(1765564667.788:61): avc: denied { write } for pid=224 comm="sh" path="pipe:[14870]" dev="pipefs" ino=14870 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[ 15.521107][ T28] audit: type=1400 audit(1765564667.788:62): avc: denied { rlimitinh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 15.523742][ T28] audit: type=1400 audit(1765564667.788:63): avc: denied { siginh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 169.333301][ T269] sshd-session (269) used greatest stack depth: 20896 bytes left
Warning: Permanently added '10.128.1.191' (ED25519) to the list of known hosts.
2025/12/12 18:40:29 parsed 1 programs
[ 176.795359][ T28] audit: type=1400 audit(1765564829.068:64): 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
[ 176.816128][ T28] audit: type=1400 audit(1765564829.068:65): 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
[ 177.844169][ T28] audit: type=1400 audit(1765564830.118:66): 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
[ 177.845469][ T291] cgroup: Unknown subsys name 'net'
[ 177.866831][ T28] audit: type=1400 audit(1765564830.118:67): 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
[ 177.894111][ T28] audit: type=1400 audit(1765564830.148:68): 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
[ 177.894234][ T291] cgroup: Unknown subsys name 'devices'
[ 178.011642][ T291] cgroup: Unknown subsys name 'hugetlb'
[ 178.017236][ T291] cgroup: Unknown subsys name 'rlimit'
[ 178.127509][ T28] audit: type=1400 audit(1765564830.398:69): 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
[ 178.150686][ T28] audit: type=1400 audit(1765564830.398:70): 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
[ 178.151585][ T293] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
[ 178.171248][ T28] audit: type=1400 audit(1765564830.398:71): 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
[ 178.199836][ T28] audit: type=1400 audit(1765564830.398:72): 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
Setting up swapspace version 1, size = 127995904 bytes
[ 178.220006][ T28] audit: type=1400 audit(1765564830.398:73): 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
[ 178.247434][ T291] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 178.870461][ T295] request_module fs-gadgetfs succeeded, but still no fs?
[ 179.388541][ T338] bridge0: port 1(bridge_slave_0) entered blocking state
[ 179.395621][ T338] bridge0: port 1(bridge_slave_0) entered disabled state
[ 179.403099][ T338] device bridge_slave_0 entered promiscuous mode
[ 179.409993][ T338] bridge0: port 2(bridge_slave_1) entered blocking state
[ 179.417020][ T338] bridge0: port 2(bridge_slave_1) entered disabled state
[ 179.424519][ T338] device bridge_slave_1 entered promiscuous mode
[ 179.477014][ T338] bridge0: port 2(bridge_slave_1) entered blocking state
[ 179.484062][ T338] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 179.491334][ T338] bridge0: port 1(bridge_slave_0) entered blocking state
[ 179.498378][ T338] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 179.516954][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 179.524516][ T320] bridge0: port 1(bridge_slave_0) entered disabled state
[ 179.531832][ T320] bridge0: port 2(bridge_slave_1) entered disabled state
[ 179.543086][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 179.551352][ T8] bridge0: port 1(bridge_slave_0) entered blocking state
[ 179.558377][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 179.566454][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 179.575108][ T8] bridge0: port 2(bridge_slave_1) entered blocking state
[ 179.582146][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 179.593781][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 179.602806][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 179.616383][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 179.627049][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 179.635188][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 179.642734][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 179.650833][ T338] device veth0_vlan entered promiscuous mode
[ 179.661032][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 179.669958][ T338] device veth1_macvtap entered promiscuous mode
[ 179.678828][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 179.688877][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
2025/12/12 18:40:32 executed programs: 0
[ 180.147029][ T365] bridge0: port 1(bridge_slave_0) entered blocking state
[ 180.154244][ T365] bridge0: port 1(bridge_slave_0) entered disabled state
[ 180.161661][ T365] device bridge_slave_0 entered promiscuous mode
[ 180.168480][ T365] bridge0: port 2(bridge_slave_1) entered blocking state
[ 180.175736][ T365] bridge0: port 2(bridge_slave_1) entered disabled state
[ 180.183236][ T365] device bridge_slave_1 entered promiscuous mode
[ 180.234381][ T365] bridge0: port 2(bridge_slave_1) entered blocking state
[ 180.241425][ T365] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 180.248679][ T365] bridge0: port 1(bridge_slave_0) entered blocking state
[ 180.255720][ T365] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 180.279155][ T8] bridge0: port 1(bridge_slave_0) entered disabled state
[ 180.286593][ T8] bridge0: port 2(bridge_slave_1) entered disabled state
[ 180.294209][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 180.302090][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 180.316202][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 180.324916][ T8] bridge0: port 1(bridge_slave_0) entered blocking state
[ 180.331964][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 180.340520][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 180.348716][ T8] bridge0: port 2(bridge_slave_1) entered blocking state
[ 180.355758][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 180.367674][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 180.382363][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 180.396431][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 180.407516][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 180.415668][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 180.423315][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 180.438819][ T365] device veth0_vlan entered promiscuous mode
[ 180.448922][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 180.457914][ T365] device veth1_macvtap entered promiscuous mode
[ 180.467491][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 180.477800][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 180.509333][ T377] loop2: detected capacity change from 0 to 1024
[ 180.515922][ T377] =======================================================
[ 180.515922][ T377] WARNING: The mand mount option has been deprecated and
[ 180.515922][ T377] and is ignored by this kernel. Remove the mand
[ 180.515922][ T377] option from the mount to silence this warning.
[ 180.515922][ T377] =======================================================
[ 180.550856][ T377] EXT4-fs: Ignoring removed oldalloc option
[ 180.556772][ T377] EXT4-fs: Ignoring removed orlov option
[ 180.571789][ T377] EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback.
[ 181.519929][ C1] sched: RT throttling activated
[ 182.051026][ T320] device bridge_slave_1 left promiscuous mode
[ 182.057203][ T320] bridge0: port 2(bridge_slave_1) entered disabled state
[ 182.064880][ T320] device bridge_slave_0 left promiscuous mode
[ 182.071094][ T320] bridge0: port 1(bridge_slave_0) entered disabled state
[ 182.079199][ T320] device veth1_macvtap left promiscuous mode
[ 182.085446][ T320] device veth0_vlan left promiscuous mode
[ 195.565346][ T382] bridge0: port 1(bridge_slave_0) entered blocking state
[ 195.572585][ T382] bridge0: port 1(bridge_slave_0) entered disabled state
[ 195.580110][ T382] device bridge_slave_0 entered promiscuous mode
[ 195.587063][ T382] bridge0: port 2(bridge_slave_1) entered blocking state
[ 195.594287][ T382] bridge0: port 2(bridge_slave_1) entered disabled state
[ 195.601746][ T382] device bridge_slave_1 entered promiscuous mode
[ 195.666323][ T382] bridge0: port 2(bridge_slave_1) entered blocking state
[ 195.673397][ T382] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 195.680697][ T382] bridge0: port 1(bridge_slave_0) entered blocking state
[ 195.687725][ T382] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 195.712001][ T43] bridge0: port 1(bridge_slave_0) entered disabled state
[ 195.719371][ T43] bridge0: port 2(bridge_slave_1) entered disabled state
[ 195.727166][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 195.734867][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 195.751467][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 195.759707][ T43] bridge0: port 1(bridge_slave_0) entered blocking state
[ 195.766770][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 195.774901][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 195.784895][ T43] bridge0: port 2(bridge_slave_1) entered blocking state
[ 195.791952][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 195.799469][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 195.820771][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 195.829616][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 195.838218][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 195.845853][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 195.853799][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 195.863396][ T382] device veth0_vlan entered promiscuous mode
[ 195.875154][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 195.884713][ T382] device veth1_macvtap entered promiscuous mode
[ 195.895172][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 195.909096][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 195.948244][ T393] loop3: detected capacity change from 0 to 1024
[ 195.954941][ T393] EXT4-fs: Ignoring removed oldalloc option
[ 195.960888][ T393] EXT4-fs: Ignoring removed orlov option
[ 195.984945][ T393] EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
2025/12/12 18:40:48 executed programs: 3
[ 296.009892][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 296.016897][ C1] (detected by 1, t=10002 jiffies, g=1609, q=1038 ncpus=2)
[ 296.024217][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294966825-4294956822), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 296.037593][ C1] rcu: rcu_preempt kthread starved for 10004 jiffies! g1609 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 296.048701][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 296.058666][ C1] rcu: RCU grace-period kthread stack dump:
[ 296.064554][ C1] task:rcu_preempt state:R running task stack:28528 pid:14 ppid:2 flags:0x00004000
[ 296.075350][ C1] Call Trace:
[ 296.078638][ C1]
[ 296.081584][ C1] __schedule+0xb87/0x14e0
[ 296.086040][ C1] ? __sched_text_start+0x8/0x8
[ 296.090918][ C1] schedule+0xbd/0x170
[ 296.095014][ C1] schedule_timeout+0x12c/0x2e0
[ 296.099885][ C1] ? __cfi_schedule_timeout+0x10/0x10
[ 296.105282][ C1] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 296.110764][ C1] ? __cfi_process_timeout+0x10/0x10
[ 296.116065][ C1] ? prepare_to_swait_event+0x308/0x320
[ 296.121623][ C1] rcu_gp_fqs_loop+0x2d8/0x10a0
[ 296.126482][ C1] ? rcu_gp_init+0xf10/0xf10
[ 296.131081][ C1] rcu_gp_kthread+0x95/0x370
[ 296.135675][ C1] ? __cfi_rcu_gp_kthread+0x10/0x10
[ 296.140900][ C1] ? __kasan_check_read+0x11/0x20
[ 296.145928][ C1] ? __kthread_parkme+0x142/0x180
[ 296.150957][ C1] kthread+0x281/0x320
[ 296.155038][ C1] ? __cfi_rcu_gp_kthread+0x10/0x10
[ 296.160249][ C1] ? __cfi_kthread+0x10/0x10
[ 296.164865][ C1] ret_from_fork+0x1f/0x30
[ 296.169312][ C1]
[ 296.172343][ C1] rcu: Stack dump where RCU GP kthread last ran:
[ 296.178667][ C1] Sending NMI from CPU 1 to CPUs 0:
[ 296.183888][ C0] NMI backtrace for cpu 0
[ 296.183898][ C0] CPU: 0 PID: 393 Comm: syz.3.18 Not tainted syzkaller #0
[ 296.183912][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 296.183925][ C0] RIP: 0010:__kasan_check_write+0x15/0x20
[ 296.183943][ C0] Code: 00 00 0f 1f 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 ba 01 00 00 00 e8 ac e7 ff ff 5d 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90
[ 296.183956][ C0] RSP: 0018:ffffc90000bc6f58 EFLAGS: 00000297
[ 296.183969][ C0] RAX: 1ffff11022fc5301 RBX: ffff8881243757b8 RCX: ffffffff84f469ae
[ 296.183991][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000bc6f80
[ 296.184000][ C0] RBP: ffffc90000bc6ff8 R08: 0000000000000004 R09: 0000000000000003
[ 296.184008][ C0] R10: fffff52000178df0 R11: 1ffff92000178df0 R12: dffffc0000000000
[ 296.184019][ C0] R13: 0000000000004000 R14: ffffc90000bc6f80 R15: 1ffff92000178dec
[ 296.184029][ C0] FS: 000055559400a500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 296.184041][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 296.184051][ C0] CR2: 00007ffccdb98258 CR3: 000000010d5dc000 CR4: 00000000003506b0
[ 296.184063][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 296.184071][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 296.184079][ C0] Call Trace:
[ 296.184083][ C0]
[ 296.184088][ C0] ? _raw_spin_lock+0x8e/0xe0
[ 296.184104][ C0] ? __cfi__raw_spin_lock+0x10/0x10
[ 296.184121][ C0] inode_sub_bytes+0x36/0x190
[ 296.184138][ C0] __dquot_free_space+0x7bb/0xb10
[ 296.184157][ C0] ? __ext4_mark_inode_dirty+0x43e/0x600
[ 296.184172][ C0] ? errseq_check+0x41/0x80
[ 296.184190][ C0] ? __ext4_journal_get_write_access+0x2df/0x6c0
[ 296.184205][ C0] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 296.184219][ C0] ? ext4_dirty_inode+0xd1/0x100
[ 296.184238][ C0] ? __mark_inode_dirty+0x26a/0x9d0
[ 296.184254][ C0] ext4_xattr_block_set+0x1861/0x3270
[ 296.184290][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 296.184310][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 296.184330][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 296.184369][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 296.184388][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 296.184407][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 296.184423][ C0] ext4_initxattrs+0xa6/0x110
[ 296.184439][ C0] security_inode_init_security+0x28c/0x3a0
[ 296.184455][ C0] ? posix_acl_create+0x118/0x440
[ 296.184474][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 296.184490][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 296.184507][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 296.184524][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 296.184550][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 296.184564][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 296.184581][ C0] ext4_init_security+0x34/0x40
[ 296.184596][ C0] __ext4_new_inode+0x2c29/0x3640
[ 296.184621][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 296.184643][ C0] ? dquot_initialize+0x20/0x20
[ 296.184661][ C0] ? ext4_lookup+0x2ce/0x6d0
[ 296.184681][ C0] ext4_create+0x22a/0x460
[ 296.184703][ C0] ? __cfi_ext4_create+0x10/0x10
[ 296.184722][ C0] ? selinux_inode_create+0x22/0x30
[ 296.184736][ C0] ? security_inode_create+0xd2/0x120
[ 296.184752][ C0] ? __cfi_ext4_create+0x10/0x10
[ 296.184771][ C0] path_openat+0x11e3/0x2f50
[ 296.184794][ C0] ? do_filp_open+0x3c0/0x3c0
[ 296.184812][ C0] do_filp_open+0x1c1/0x3c0
[ 296.184827][ C0] ? __cfi_do_filp_open+0x10/0x10
[ 296.184847][ C0] ? alloc_fd+0x4e6/0x590
[ 296.184861][ C0] do_sys_openat2+0x185/0x7e0
[ 296.184880][ C0] ? __se_sys_futex+0x273/0x2e0
[ 296.184895][ C0] ? do_sys_open+0xe0/0xe0
[ 296.184912][ C0] ? __x64_sys_futex+0x100/0x100
[ 296.184925][ C0] ? do_user_addr_fault+0xd36/0x1050
[ 296.184947][ C0] __x64_sys_creat+0x8e/0xb0
[ 296.184966][ C0] x64_sys_call+0x116/0x9a0
[ 296.184983][ C0] do_syscall_64+0x4c/0xa0
[ 296.184999][ C0] ? clear_bhb_loop+0x30/0x80
[ 296.185019][ C0] ? clear_bhb_loop+0x30/0x80
[ 296.185039][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 296.185059][ C0] RIP: 0033:0x7f005dd8f749
[ 296.185077][ 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
[ 296.185088][ C0] RSP: 002b:00007ffe9e79fc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 296.185102][ C0] RAX: ffffffffffffffda RBX: 00007f005dfe5fa0 RCX: 00007f005dd8f749
[ 296.185113][ C0] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 296.185122][ C0] RBP: 00007f005de13f91 R08: 0000000000000000 R09: 0000000000000000
[ 296.185131][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 296.185140][ C0] R13: 00007f005dfe5fa0 R14: 00007f005dfe5fa0 R15: 0000000000000002
[ 296.185152][ C0]
[ 345.479922][ T29] INFO: task kworker/u4:2:43 blocked for more than 126 seconds.
[ 345.487605][ T29] Not tainted syzkaller #0
[ 345.492596][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 345.501328][ T29] task:kworker/u4:2 state:D stack:20992 pid:43 ppid:2 flags:0x00004000
[ 345.510865][ T29] Workqueue: events_unbound linkwatch_event
[ 345.516788][ T29] Call Trace:
[ 345.520107][ T29]
[ 345.523117][ T29] __schedule+0xb87/0x14e0
[ 345.527541][ T29] ? __sched_text_start+0x8/0x8
[ 346.480146][ T29] ? __mutex_add_waiter+0x17b/0x270
[ 346.485516][ T29] ? __kasan_check_write+0x14/0x20
[ 346.490872][ T29] ? kthread_data+0x50/0xc0
[ 346.495423][ T29] ? wq_worker_sleeping+0x64/0x280
[ 346.500623][ T29] schedule+0xbd/0x170
[ 346.504751][ T29] schedule_preempt_disabled+0x13/0x20
[ 346.510257][ T29] __mutex_lock+0x74a/0x16d0
[ 346.514902][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 346.521770][ T29] ? __kasan_check_write+0x14/0x20
[ 346.526889][ T29] ? __switch_to+0x51f/0xe30
[ 347.480261][ T29] ? __cfi___switch_to+0x10/0x10
[ 347.485286][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 347.490337][ T29] __mutex_lock_slowpath+0xe/0x10
[ 347.495379][ T29] mutex_lock+0xf8/0x1a0
[ 347.499618][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 347.504539][ T29] ? __schedule+0xb8f/0x14e0
[ 347.509141][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 347.514722][ T29] rtnl_lock+0x15/0x20
[ 347.518788][ T29] linkwatch_event+0xe/0x60
[ 347.523315][ T29] process_one_work+0x71f/0xc40
[ 347.528177][ T29] worker_thread+0xa29/0x11f0
[ 348.490634][ T29] kthread+0x281/0x320
[ 348.495020][ T29] ? __cfi_worker_thread+0x10/0x10
[ 348.500221][ T29] ? __cfi_kthread+0x10/0x10
[ 348.504846][ T29] ret_from_fork+0x1f/0x30
[ 348.509267][ T29]
[ 348.512378][ T29] INFO: task syz-executor:398 blocked for more than 129 seconds.
[ 348.520139][ T29] Not tainted syzkaller #0
[ 348.525082][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 349.480046][ T29] task:syz-executor state:D stack:23264 pid:398 ppid:1 flags:0x00004004
[ 349.489306][ T29] Call Trace:
[ 349.492649][ T29]
[ 349.495606][ T29] __schedule+0xb87/0x14e0
[ 349.500085][ T29] ? __kasan_check_write+0x14/0x20
[ 349.505220][ T29] ? __sched_text_start+0x8/0x8
[ 349.510226][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 349.516044][ T29] ? prepare_to_wait_event+0x40b/0x440
[ 349.521558][ T29] schedule+0xbd/0x170
[ 349.525641][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 350.490118][ T29] ? kasan_quarantine_put+0x34/0x190
[ 350.495516][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 350.501792][ T29] ? ____kasan_slab_free+0x13d/0x180
[ 350.507094][ T29] ? __kasan_slab_free+0x11/0x20
[ 350.512100][ T29] ? slab_free_freelist_hook+0xc2/0x190
[ 350.517689][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 350.523032][ T29] ? __kmem_cache_free+0xb7/0x1b0
[ 350.528070][ T29] ? __kasan_check_write+0x14/0x20
[ 351.480364][ T29] ? kobject_put+0x1bb/0x280
[ 351.485198][ T29] ? __cfi_netdev_queue_release+0x10/0x10
[ 351.490999][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 351.497087][ T29] ? netdev_queue_update_kobjects+0x428/0x470
[ 351.503193][ T29] ? __x64_sys_sendto+0xe5/0x100
[ 351.508316][ T29] ? x64_sys_call+0x83/0x9a0
[ 351.512946][ T29] ? __kasan_check_read+0x11/0x20
[ 351.517977][ T29] netif_set_real_num_tx_queues+0x4c9/0x7f0
[ 351.523920][ T29] veth_newlink+0x874/0xbe0
[ 351.528436][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 352.480275][ T29] ? rtnl_create_link+0x88d/0xb10
[ 352.485382][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 352.490534][ T29] rtnl_newlink+0x14b9/0x2030
[ 352.495246][ T29] ? memcpy+0x56/0x70
[ 352.499285][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 352.504365][ T29] ? selinux_capable+0x29c/0x380
[ 352.509324][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 352.514630][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 352.519484][ T29] ? ns_capable+0x8c/0xf0
[ 352.523811][ T29] ? netlink_net_capable+0x125/0x160
[ 352.529104][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 353.480390][ T29] rtnetlink_rcv_msg+0x9f4/0xcf0
[ 353.485393][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 353.490893][ T29] ? kernel_text_address+0xa0/0xd0
[ 353.496064][ T29] ? __kernel_text_address+0xd/0x30
[ 353.501345][ T29] ? unwind_get_return_address+0x4d/0x90
[ 353.507089][ T29] ? memcpy+0x56/0x70
[ 353.511123][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 353.516568][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 353.522338][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 353.527633][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 354.480303][ T29] ? __alloc_skb+0xea/0x4b0
[ 354.484858][ T29] ? avc_has_perm+0x158/0x240
[ 354.489560][ T29] ? __alloc_skb+0x236/0x4b0
[ 354.494270][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 354.499229][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 354.504328][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 354.509782][ T29] netlink_rcv_skb+0x1f2/0x440
[ 354.514593][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 354.520102][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 354.525401][ T29] ? __netlink_lookup+0x387/0x3b0
[ 355.479910][ T29] rtnetlink_rcv+0x1c/0x20
[ 355.484383][ T29] netlink_unicast+0x8ab/0xa30
[ 355.489198][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 355.494016][ T29] ? kasan_save_alloc_info+0x25/0x30
[ 355.499331][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 355.504663][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 355.510192][ T29] __sys_sendto+0x464/0x5e0
[ 355.514703][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 355.519714][ T29] ? errseq_sample+0x44/0x70
[ 355.524374][ T29] ? preempt_count_add+0x90/0x1b0
[ 355.529411][ T29] ? fd_install+0x1b9/0x2d0
[ 356.490112][ T29] __x64_sys_sendto+0xe5/0x100
[ 356.494948][ T29] x64_sys_call+0x83/0x9a0
[ 356.499378][ T29] do_syscall_64+0x4c/0xa0
[ 356.503895][ T29] ? clear_bhb_loop+0x30/0x80
[ 356.508596][ T29] ? clear_bhb_loop+0x30/0x80
[ 356.513368][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 356.519293][ T29] RIP: 0033:0x7fbf86791583
[ 356.523750][ T29] RSP: 002b:00007fff2c2f32b8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 357.480200][ T29] RAX: ffffffffffffffda RBX: 00007fbf87514620 RCX: 00007fbf86791583
[ 357.488301][ T29] RDX: 000000000000002c RSI: 00007fbf87514670 RDI: 0000000000000003
[ 357.496342][ T29] RBP: 0000000000000001 R08: 00007fff2c2f32d4 R09: 000000000000000c
[ 357.504349][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 357.512382][ T29] R13: 0000000000000000 R14: 00007fbf87514670 R15: 0000000000000000
[ 357.520441][ T29]
[ 357.523483][ T29] NMI backtrace for cpu 0
[ 357.527801][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 357.534984][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 357.545040][ T29] Call Trace:
[ 357.548319][ T29]
[ 357.551252][ T29] __dump_stack+0x21/0x24
[ 357.555586][ T29] dump_stack_lvl+0xee/0x150
[ 357.560181][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 357.565213][ T29] dump_stack+0x15/0x24
[ 357.569369][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 357.574321][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 357.579879][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 357.585380][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 357.590326][ T29] ? memcpy+0x56/0x70
[ 357.594311][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 357.600299][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 357.606296][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 357.612204][ T29] watchdog+0xd44/0xe80
[ 357.616371][ T29] ? __cfi_watchdog+0x10/0x10
[ 357.621054][ T29] ? __kasan_check_read+0x11/0x20
[ 357.626080][ T29] ? __kthread_parkme+0x142/0x180
[ 357.631110][ T29] kthread+0x281/0x320
[ 357.635183][ T29] ? __cfi_watchdog+0x10/0x10
[ 357.639869][ T29] ? __cfi_kthread+0x10/0x10
[ 357.644487][ T29] ret_from_fork+0x1f/0x30
[ 357.648919][ T29]
[ 357.652012][ T29] Sending NMI from CPU 0 to CPUs 1:
[ 357.657220][ C1] NMI backtrace for cpu 1
[ 357.657231][ C1] CPU: 1 PID: 377 Comm: syz.2.17 Not tainted syzkaller #0
[ 357.657245][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 357.657254][ C1] RIP: 0010:__find_get_block+0xa0c/0xee0
[ 357.657274][ C1] Code: b2 02 00 00 e8 95 13 a4 ff 4c 89 ff be 04 00 00 00 e8 b8 8f e8 ff f0 41 ff 0f e9 aa 02 00 00 4d 89 e5 48 89 de 48 f7 de 31 ff 2f 18 a4 ff 48 85 db 0f 84 93 00 00 00 48 ff c3 48 c7 c7 e0 5e
[ 357.657286][ C1] RSP: 0018:ffffc90000aa6f60 EFLAGS: 00000046
[ 357.657300][ C1] RAX: ffffffff81cc0df8 RBX: ffffffffffffffff RCX: ffff888114cbe540
[ 357.657312][ C1] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
[ 357.657320][ C1] RBP: ffffc90000aa7058 R08: dffffc0000000000 R09: ffffed10228d73ed
[ 357.657331][ C1] R10: ffffed10228d73ed R11: 1ffff110228d73ec R12: ffff8881116425e8
[ 357.657343][ C1] R13: ffff8881116425e8 R14: 0000000000035708 R15: 0000000000000400
[ 357.657353][ C1] FS: 000055555c188500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 357.657366][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 357.657376][ C1] CR2: 00007f79e1f15000 CR3: 0000000114787000 CR4: 00000000003506a0
[ 357.657389][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 357.657398][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 357.657407][ C1] Call Trace:
[ 357.657411][ C1]
[ 357.657418][ C1] ? __cfi___find_get_block+0x10/0x10
[ 357.657436][ C1] __getblk_gfp+0x2e/0x7d0
[ 357.657451][ C1] ? __cfi_wake_up_var+0x10/0x10
[ 357.657479][ C1] ? __kasan_check_write+0x14/0x20
[ 357.657493][ C1] __ext4_sb_bread_gfp+0x76/0x210
[ 357.657508][ C1] ext4_sb_bread+0x28/0x30
[ 357.657521][ C1] ext4_xattr_block_set+0xcd5/0x3270
[ 357.657547][ C1] ? ext4_xattr_block_find+0x310/0x310
[ 357.657568][ C1] ? ext4_xattr_block_find+0xf0/0x310
[ 357.657589][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 357.657612][ C1] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 357.657631][ C1] ? selinux_inode_init_security+0x67d/0x950
[ 357.657649][ C1] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 357.657666][ C1] ext4_initxattrs+0xa6/0x110
[ 357.657682][ C1] security_inode_init_security+0x28c/0x3a0
[ 357.657698][ C1] ? posix_acl_create+0x118/0x440
[ 357.657717][ C1] ? __cfi_ext4_initxattrs+0x10/0x10
[ 357.657749][ C1] ? __cfi_security_inode_init_security+0x10/0x10
[ 357.657768][ C1] ? dquot_alloc_inode+0x1d3/0x810
[ 357.657800][ C1] ? __cfi_inode_set_flags+0x10/0x10
[ 357.657819][ C1] ? __cfi_ext4_init_acl+0x10/0x10
[ 357.657834][ C1] ? _raw_spin_unlock+0x4c/0x70
[ 357.657851][ C1] ext4_init_security+0x34/0x40
[ 357.657866][ C1] __ext4_new_inode+0x2c29/0x3640
[ 357.657891][ C1] ? __cfi___ext4_new_inode+0x10/0x10
[ 357.657918][ C1] ? dquot_initialize+0x20/0x20
[ 357.657936][ C1] ? ext4_lookup+0x2ce/0x6d0
[ 357.657956][ C1] ext4_create+0x22a/0x460
[ 357.657977][ C1] ? __cfi_ext4_create+0x10/0x10
[ 357.657996][ C1] ? selinux_inode_create+0x22/0x30
[ 357.658011][ C1] ? security_inode_create+0xd2/0x120
[ 357.658026][ C1] ? __cfi_ext4_create+0x10/0x10
[ 357.658045][ C1] path_openat+0x11e3/0x2f50
[ 357.658067][ C1] ? do_filp_open+0x3c0/0x3c0
[ 357.658085][ C1] do_filp_open+0x1c1/0x3c0
[ 357.658101][ C1] ? __cfi_do_filp_open+0x10/0x10
[ 357.658121][ C1] ? alloc_fd+0x4e6/0x590
[ 357.658135][ C1] do_sys_openat2+0x185/0x7e0
[ 357.658155][ C1] ? __se_sys_futex+0x273/0x2e0
[ 357.658168][ C1] ? do_sys_open+0xe0/0xe0
[ 357.658190][ C1] ? __x64_sys_futex+0x100/0x100
[ 357.658204][ C1] ? do_user_addr_fault+0xd36/0x1050
[ 357.658225][ C1] __x64_sys_creat+0x8e/0xb0
[ 357.658245][ C1] x64_sys_call+0x116/0x9a0
[ 357.658262][ C1] do_syscall_64+0x4c/0xa0
[ 357.658278][ C1] ? clear_bhb_loop+0x30/0x80
[ 357.658323][ C1] ? clear_bhb_loop+0x30/0x80
[ 357.658344][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 357.658363][ C1] RIP: 0033:0x7f7f9cd8f749
[ 357.658375][ C1] 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
[ 357.658386][ C1] RSP: 002b:00007fff50ffe348 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 357.658400][ C1] RAX: ffffffffffffffda RBX: 00007f7f9cfe5fa0 RCX: 00007f7f9cd8f749
[ 357.658428][ C1] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 357.658438][ C1] RBP: 00007f7f9ce13f91 R08: 0000000000000000 R09: 0000000000000000
[ 357.658448][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 357.658457][ C1] R13: 00007f7f9cfe5fa0 R14: 00007f7f9cfe5fa0 R15: 0000000000000002
[ 357.658470][ C1]
[ 380.480310][ T29] INFO: task kworker/u4:2:43 blocked for more than 161 seconds.
[ 380.488020][ T29] Not tainted syzkaller #0
[ 380.493085][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 380.501821][ T29] task:kworker/u4:2 state:D stack:20992 pid:43 ppid:2 flags:0x00004000
[ 380.511102][ T29] Workqueue: events_unbound linkwatch_event
[ 380.517018][ T29] Call Trace:
[ 380.520330][ T29]
[ 380.523268][ T29] __schedule+0xb87/0x14e0
[ 380.527685][ T29] ? __sched_text_start+0x8/0x8
[ 381.480105][ T29] ? __mutex_add_waiter+0x17b/0x270
[ 381.485358][ T29] ? __kasan_check_write+0x14/0x20
[ 381.490571][ T29] ? kthread_data+0x50/0xc0
[ 381.495076][ T29] ? wq_worker_sleeping+0x64/0x280
[ 381.500230][ T29] schedule+0xbd/0x170
[ 381.504308][ T29] schedule_preempt_disabled+0x13/0x20
[ 381.509759][ T29] __mutex_lock+0x74a/0x16d0
[ 381.514392][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 381.521217][ T29] ? __kasan_check_write+0x14/0x20
[ 381.526352][ T29] ? __switch_to+0x51f/0xe30
[ 382.480317][ T29] ? __cfi___switch_to+0x10/0x10
[ 382.485319][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 382.490700][ T29] __mutex_lock_slowpath+0xe/0x10
[ 382.495785][ T29] mutex_lock+0xf8/0x1a0
[ 382.500056][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 382.504910][ T29] ? __schedule+0xb8f/0x14e0
[ 382.509506][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 382.515096][ T29] rtnl_lock+0x15/0x20
[ 382.519168][ T29] linkwatch_event+0xe/0x60
[ 382.523685][ T29] process_one_work+0x71f/0xc40
[ 382.528537][ T29] worker_thread+0xa29/0x11f0
[ 383.479936][ T29] kthread+0x281/0x320
[ 383.484061][ T29] ? __cfi_worker_thread+0x10/0x10
[ 383.489186][ T29] ? __cfi_kthread+0x10/0x10
[ 383.493840][ T29] ret_from_fork+0x1f/0x30
[ 383.498285][ T29]
[ 383.501396][ T29] INFO: task syz-executor:398 blocked for more than 164 seconds.
[ 383.509165][ T29] Not tainted syzkaller #0
[ 383.514168][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 383.522882][ T29] task:syz-executor state:D stack:23264 pid:398 ppid:1 flags:0x00004004
[ 384.480126][ T29] Call Trace:
[ 384.483445][ T29]
[ 384.486435][ T29] __schedule+0xb87/0x14e0
[ 384.490915][ T29] ? __kasan_check_write+0x14/0x20
[ 384.496030][ T29] ? __sched_text_start+0x8/0x8
[ 384.500907][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 384.506717][ T29] ? prepare_to_wait_event+0x40b/0x440
[ 384.512212][ T29] schedule+0xbd/0x170
[ 384.516303][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 384.521995][ T29] ? kasan_quarantine_put+0x34/0x190
[ 384.527280][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 385.480406][ T29] ? ____kasan_slab_free+0x13d/0x180
[ 385.485737][ T29] ? __kasan_slab_free+0x11/0x20
[ 385.490931][ T29] ? slab_free_freelist_hook+0xc2/0x190
[ 385.496488][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 385.501876][ T29] ? __kmem_cache_free+0xb7/0x1b0
[ 385.506957][ T29] ? __kasan_check_write+0x14/0x20
[ 385.512126][ T29] ? kobject_put+0x1bb/0x280
[ 385.516734][ T29] ? __cfi_netdev_queue_release+0x10/0x10
[ 385.522529][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 385.528710][ T29] ? netdev_queue_update_kobjects+0x428/0x470
[ 386.490266][ T29] ? __x64_sys_sendto+0xe5/0x100
[ 386.495238][ T29] ? x64_sys_call+0x83/0x9a0
[ 386.499818][ T29] ? __kasan_check_read+0x11/0x20
[ 386.504927][ T29] netif_set_real_num_tx_queues+0x4c9/0x7f0
[ 386.510888][ T29] veth_newlink+0x874/0xbe0
[ 386.515400][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 386.520477][ T29] ? rtnl_create_link+0x88d/0xb10
[ 386.525507][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 387.480613][ T29] rtnl_newlink+0x14b9/0x2030
[ 387.485387][ T29] ? memcpy+0x56/0x70
[ 387.489433][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 387.494499][ T29] ? selinux_capable+0x29c/0x380
[ 387.499437][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 387.504766][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 387.509643][ T29] ? ns_capable+0x8c/0xf0
[ 387.514012][ T29] ? netlink_net_capable+0x125/0x160
[ 387.519317][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 387.524422][ T29] rtnetlink_rcv_msg+0x9f4/0xcf0
[ 387.529376][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 388.480679][ T29] ? kernel_text_address+0xa0/0xd0
[ 388.486019][ T29] ? __kernel_text_address+0xd/0x30
[ 388.491346][ T29] ? unwind_get_return_address+0x4d/0x90
[ 388.497002][ T29] ? memcpy+0x56/0x70
[ 388.501162][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 388.506576][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 388.512408][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 388.517779][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 388.523275][ T29] ? __alloc_skb+0xea/0x4b0
[ 388.527790][ T29] ? avc_has_perm+0x158/0x240
[ 389.480085][ T29] ? __alloc_skb+0x236/0x4b0
[ 389.484724][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 389.489675][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 389.494816][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 389.500282][ T29] netlink_rcv_skb+0x1f2/0x440
[ 389.505039][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 389.510525][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 389.515820][ T29] ? __netlink_lookup+0x387/0x3b0
[ 389.520878][ T29] rtnetlink_rcv+0x1c/0x20
[ 389.525301][ T29] netlink_unicast+0x8ab/0xa30
[ 390.480502][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 390.485511][ T29] ? kasan_save_alloc_info+0x25/0x30
[ 390.490874][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 390.496174][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 390.501650][ T29] __sys_sendto+0x464/0x5e0
[ 390.506169][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 390.511242][ T29] ? errseq_sample+0x44/0x70
[ 390.515850][ T29] ? preempt_count_add+0x90/0x1b0
[ 390.520903][ T29] ? fd_install+0x1b9/0x2d0
[ 390.525415][ T29] __x64_sys_sendto+0xe5/0x100
[ 391.480130][ T29] x64_sys_call+0x83/0x9a0
[ 391.484642][ T29] do_syscall_64+0x4c/0xa0
[ 391.489076][ T29] ? clear_bhb_loop+0x30/0x80
[ 391.493850][ T29] ? clear_bhb_loop+0x30/0x80
[ 391.498534][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 391.504481][ T29] RIP: 0033:0x7fbf86791583
[ 391.508897][ T29] RSP: 002b:00007fff2c2f32b8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 391.517341][ T29] RAX: ffffffffffffffda RBX: 00007fbf87514620 RCX: 00007fbf86791583
[ 391.525323][ T29] RDX: 000000000000002c RSI: 00007fbf87514670 RDI: 0000000000000003
[ 392.480480][ T29] RBP: 0000000000000001 R08: 00007fff2c2f32d4 R09: 000000000000000c
[ 392.488492][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 392.496588][ T29] R13: 0000000000000000 R14: 00007fbf87514670 R15: 0000000000000000
[ 392.504629][ T29]
[ 392.507664][ T29] NMI backtrace for cpu 0
[ 392.511971][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 392.519145][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 392.529180][ T29] Call Trace:
[ 392.532446][ T29]
[ 392.535379][ T29] __dump_stack+0x21/0x24
[ 392.539710][ T29] dump_stack_lvl+0xee/0x150
[ 392.544296][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 392.549319][ T29] dump_stack+0x15/0x24
[ 392.553474][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 392.558430][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 392.563978][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 392.569441][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 392.574388][ T29] ? memcpy+0x56/0x70
[ 392.578369][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 392.584360][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 392.590353][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 392.596249][ T29] watchdog+0xd44/0xe80
[ 392.600411][ T29] ? __cfi_watchdog+0x10/0x10
[ 392.605097][ T29] ? __kasan_check_read+0x11/0x20
[ 392.610116][ T29] ? __kthread_parkme+0x142/0x180
[ 392.615139][ T29] kthread+0x281/0x320
[ 392.619202][ T29] ? __cfi_watchdog+0x10/0x10
[ 392.623888][ T29] ? __cfi_kthread+0x10/0x10
[ 392.628489][ T29] ret_from_fork+0x1f/0x30
[ 392.632909][ T29]
[ 392.635985][ T29] Sending NMI from CPU 0 to CPUs 1:
[ 392.641215][ C1] NMI backtrace for cpu 1
[ 392.641222][ C1] CPU: 1 PID: 377 Comm: syz.2.17 Not tainted syzkaller #0
[ 392.641236][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 392.641243][ C1] RIP: 0010:bcmp+0x1/0x230
[ 392.641260][ C1] Code: 4c 89 f6 4c 89 e2 eb 96 31 c0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 90 90 90 90 90 90 90 90 90 90 90 b8 f6 42 2b b7 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 10 49 bf 00 00 00 00
[ 392.641272][ C1] RSP: 0018:ffffc90000aa7170 EFLAGS: 00000246
[ 392.641285][ C1] RAX: ffff88812e258420 RBX: 0000000000000007 RCX: 0000000000000000
[ 392.641294][ C1] RDX: 0000000000000007 RSI: ffff88812e258430 RDI: ffff8881143cc830
[ 392.641304][ C1] RBP: ffffc90000aa7350 R08: dffffc0000000000 R09: ffffed10222c84be
[ 392.641314][ C1] R10: ffffed10222c84be R11: 1ffff110222c84bd R12: 0000000000000000
[ 392.641324][ C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff11022879904
[ 392.641334][ C1] FS: 000055555c188500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 392.641346][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 392.641356][ C1] CR2: 00007f79e1f15000 CR3: 0000000114787000 CR4: 00000000003506a0
[ 392.641368][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 392.641376][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 392.641385][ C1] Call Trace:
[ 392.641388][ C1]
[ 392.641397][ C1] ? ext4_xattr_block_set+0x1028/0x3270
[ 392.641423][ C1] ? ext4_xattr_block_find+0x310/0x310
[ 392.641442][ C1] ? ext4_xattr_block_find+0xf0/0x310
[ 392.641461][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 392.641483][ C1] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 392.641501][ C1] ? selinux_inode_init_security+0x67d/0x950
[ 392.641517][ C1] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 392.641533][ C1] ext4_initxattrs+0xa6/0x110
[ 392.641547][ C1] security_inode_init_security+0x28c/0x3a0
[ 392.641562][ C1] ? posix_acl_create+0x118/0x440
[ 392.641581][ C1] ? __cfi_ext4_initxattrs+0x10/0x10
[ 392.641595][ C1] ? __cfi_security_inode_init_security+0x10/0x10
[ 392.641611][ C1] ? dquot_alloc_inode+0x1d3/0x810
[ 392.641628][ C1] ? __cfi_inode_set_flags+0x10/0x10
[ 392.641648][ C1] ? __cfi_ext4_init_acl+0x10/0x10
[ 392.641663][ C1] ? _raw_spin_unlock+0x4c/0x70
[ 392.641679][ C1] ext4_init_security+0x34/0x40
[ 392.641693][ C1] __ext4_new_inode+0x2c29/0x3640
[ 392.641716][ C1] ? __cfi___ext4_new_inode+0x10/0x10
[ 392.641736][ C1] ? dquot_initialize+0x20/0x20
[ 392.641754][ C1] ? ext4_lookup+0x2ce/0x6d0
[ 392.641772][ C1] ext4_create+0x22a/0x460
[ 392.641792][ C1] ? __cfi_ext4_create+0x10/0x10
[ 392.641810][ C1] ? selinux_inode_create+0x22/0x30
[ 392.641824][ C1] ? security_inode_create+0xd2/0x120
[ 392.641838][ C1] ? __cfi_ext4_create+0x10/0x10
[ 392.641856][ C1] path_openat+0x11e3/0x2f50
[ 392.641876][ C1] ? do_filp_open+0x3c0/0x3c0
[ 392.641893][ C1] do_filp_open+0x1c1/0x3c0
[ 392.641908][ C1] ? __cfi_do_filp_open+0x10/0x10
[ 392.641926][ C1] ? alloc_fd+0x4e6/0x590
[ 392.641939][ C1] do_sys_openat2+0x185/0x7e0
[ 392.641957][ C1] ? __se_sys_futex+0x273/0x2e0
[ 392.641970][ C1] ? do_sys_open+0xe0/0xe0
[ 392.641986][ C1] ? __x64_sys_futex+0x100/0x100
[ 392.641999][ C1] ? do_user_addr_fault+0xd36/0x1050
[ 392.642019][ C1] __x64_sys_creat+0x8e/0xb0
[ 392.642037][ C1] x64_sys_call+0x116/0x9a0
[ 392.642053][ C1] do_syscall_64+0x4c/0xa0
[ 392.642068][ C1] ? clear_bhb_loop+0x30/0x80
[ 392.642087][ C1] ? clear_bhb_loop+0x30/0x80
[ 392.642106][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 392.642125][ C1] RIP: 0033:0x7f7f9cd8f749
[ 392.642136][ C1] 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
[ 392.642146][ C1] RSP: 002b:00007fff50ffe348 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 392.642160][ C1] RAX: ffffffffffffffda RBX: 00007f7f9cfe5fa0 RCX: 00007f7f9cd8f749
[ 392.642170][ C1] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 392.642178][ C1] RBP: 00007f7f9ce13f91 R08: 0000000000000000 R09: 0000000000000000
[ 392.642187][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 392.642194][ C1] R13: 00007f7f9cfe5fa0 R14: 00007f7f9cfe5fa0 R15: 0000000000000002
[ 392.642206][ C1]
[ 415.479864][ T29] INFO: task kworker/1:0:24 blocked for more than 154 seconds.
[ 415.487445][ T29] Not tainted syzkaller #0
[ 415.492416][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 415.501102][ T29] task:kworker/1:0 state:D stack:25536 pid:24 ppid:2 flags:0x00004000
[ 415.510383][ T29] Workqueue: ipv6_addrconf addrconf_verify_work
[ 415.516623][ T29] Call Trace:
[ 415.519918][ T29]
[ 415.522867][ T29] __schedule+0xb87/0x14e0
[ 415.527278][ T29] ? __sched_text_start+0x8/0x8
[ 416.480302][ T29] ? __mutex_add_waiter+0xc7/0x270
[ 416.485511][ T29] ? __kasan_check_write+0x14/0x20
[ 416.490733][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 416.495991][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 416.501348][ T29] schedule+0xbd/0x170
[ 416.505428][ T29] schedule_preempt_disabled+0x13/0x20
[ 416.510919][ T29] __mutex_lock+0x74a/0x16d0
[ 416.515512][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 416.522306][ T29] ? __kasan_check_write+0x14/0x20
[ 416.527434][ T29] ? __switch_to+0x51f/0xe30
[ 417.480087][ T29] ? __cfi___switch_to+0x10/0x10
[ 417.485079][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 417.489963][ T29] __mutex_lock_slowpath+0xe/0x10
[ 417.495042][ T29] mutex_lock+0xf8/0x1a0
[ 417.499353][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 417.504253][ T29] ? __schedule+0xb8f/0x14e0
[ 417.508873][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 417.514440][ T29] rtnl_lock+0x15/0x20
[ 417.518521][ T29] addrconf_verify_work+0x19/0x30
[ 417.523592][ T29] process_one_work+0x71f/0xc40
[ 417.528445][ T29] worker_thread+0xa29/0x11f0
[ 418.480059][ T29] kthread+0x281/0x320
[ 418.484181][ T29] ? __cfi_worker_thread+0x10/0x10
[ 418.489303][ T29] ? __cfi_kthread+0x10/0x10
[ 418.494330][ T29] ret_from_fork+0x1f/0x30
[ 418.498849][ T29]
[ 418.501910][ T29] INFO: task kworker/u4:2:43 blocked for more than 199 seconds.
[ 418.509530][ T29] Not tainted syzkaller #0
[ 418.514469][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 418.523176][ T29] task:kworker/u4:2 state:D stack:20992 pid:43 ppid:2 flags:0x00004000
[ 419.480097][ T29] Workqueue: events_unbound linkwatch_event
[ 419.486057][ T29] Call Trace:
[ 419.489344][ T29]
[ 419.492338][ T29] __schedule+0xb87/0x14e0
[ 419.496825][ T29] ? __sched_text_start+0x8/0x8
[ 419.501702][ T29] ? __mutex_add_waiter+0x17b/0x270
[ 419.506898][ T29] ? __kasan_check_write+0x14/0x20
[ 419.512032][ T29] ? kthread_data+0x50/0xc0
[ 419.516534][ T29] ? wq_worker_sleeping+0x64/0x280
[ 419.521654][ T29] schedule+0xbd/0x170
[ 419.525740][ T29] schedule_preempt_disabled+0x13/0x20
[ 420.480204][ T29] __mutex_lock+0x74a/0x16d0
[ 420.484984][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 420.491805][ T29] ? __kasan_check_write+0x14/0x20
[ 420.496922][ T29] ? __switch_to+0x51f/0xe30
[ 420.501550][ T29] ? __cfi___switch_to+0x10/0x10
[ 420.506494][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 420.511374][ T29] __mutex_lock_slowpath+0xe/0x10
[ 420.516406][ T29] mutex_lock+0xf8/0x1a0
[ 420.520694][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 420.525556][ T29] ? __schedule+0xb8f/0x14e0
[ 421.480063][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 421.485673][ T29] rtnl_lock+0x15/0x20
[ 421.489754][ T29] linkwatch_event+0xe/0x60
[ 421.494388][ T29] process_one_work+0x71f/0xc40
[ 421.499253][ T29] worker_thread+0xa29/0x11f0
[ 421.503973][ T29] kthread+0x281/0x320
[ 421.508117][ T29] ? __cfi_worker_thread+0x10/0x10
[ 421.513267][ T29] ? __cfi_kthread+0x10/0x10
[ 421.517874][ T29] ret_from_fork+0x1f/0x30
[ 421.522374][ T29]
[ 421.525433][ T29] INFO: task syz-executor:398 blocked for more than 202 seconds.
[ 422.491053][ T29] Not tainted syzkaller #0
[ 422.496031][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 422.504729][ T29] task:syz-executor state:D stack:23264 pid:398 ppid:1 flags:0x00004004
[ 422.514015][ T29] Call Trace:
[ 422.517302][ T29]
[ 422.520292][ T29] __schedule+0xb87/0x14e0
[ 422.524757][ T29] ? __kasan_check_write+0x14/0x20
[ 423.480362][ T29] ? __sched_text_start+0x8/0x8
[ 423.485261][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 423.491149][ T29] ? prepare_to_wait_event+0x40b/0x440
[ 423.496660][ T29] schedule+0xbd/0x170
[ 423.500804][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 423.506455][ T29] ? kasan_quarantine_put+0x34/0x190
[ 423.511781][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 423.517943][ T29] ? ____kasan_slab_free+0x13d/0x180
[ 423.523270][ T29] ? __kasan_slab_free+0x11/0x20
[ 423.528221][ T29] ? slab_free_freelist_hook+0xc2/0x190
[ 424.480175][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 424.485513][ T29] ? __kmem_cache_free+0xb7/0x1b0
[ 424.490717][ T29] ? __kasan_check_write+0x14/0x20
[ 424.496038][ T29] ? kobject_put+0x1bb/0x280
[ 424.500706][ T29] ? __cfi_netdev_queue_release+0x10/0x10
[ 424.506492][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 424.512631][ T29] ? netdev_queue_update_kobjects+0x428/0x470
[ 424.518713][ T29] ? __x64_sys_sendto+0xe5/0x100
[ 424.523689][ T29] ? x64_sys_call+0x83/0x9a0
[ 424.528321][ T29] ? __kasan_check_read+0x11/0x20
[ 425.480163][ T29] netif_set_real_num_tx_queues+0x4c9/0x7f0
[ 425.486114][ T29] veth_newlink+0x874/0xbe0
[ 425.490947][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 425.496012][ T29] ? rtnl_create_link+0x88d/0xb10
[ 425.501082][ T29] ? __cfi_veth_newlink+0x10/0x10
[ 425.506128][ T29] rtnl_newlink+0x14b9/0x2030
[ 425.510866][ T29] ? memcpy+0x56/0x70
[ 425.514896][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 425.519950][ T29] ? selinux_capable+0x29c/0x380
[ 425.524903][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 426.480096][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 426.485012][ T29] ? ns_capable+0x8c/0xf0
[ 426.489355][ T29] ? netlink_net_capable+0x125/0x160
[ 426.495011][ T29] ? __cfi_rtnl_newlink+0x10/0x10
[ 426.500141][ T29] rtnetlink_rcv_msg+0x9f4/0xcf0
[ 426.505088][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 426.510560][ T29] ? kernel_text_address+0xa0/0xd0
[ 426.515673][ T29] ? __kernel_text_address+0xd/0x30
[ 426.520904][ T29] ? unwind_get_return_address+0x4d/0x90
[ 426.526547][ T29] ? memcpy+0x56/0x70
[ 427.480261][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 427.485735][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 427.491504][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 427.496794][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 427.502323][ T29] ? __alloc_skb+0xea/0x4b0
[ 427.506914][ T29] ? avc_has_perm+0x158/0x240
[ 427.511628][ T29] ? __alloc_skb+0x236/0x4b0
[ 427.516217][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 427.521193][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 427.526230][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 428.480162][ T29] netlink_rcv_skb+0x1f2/0x440
[ 428.484984][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 428.490638][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 428.495937][ T29] ? __netlink_lookup+0x387/0x3b0
[ 428.500991][ T29] rtnetlink_rcv+0x1c/0x20
[ 428.505435][ T29] netlink_unicast+0x8ab/0xa30
[ 428.510268][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 428.515031][ T29] ? kasan_save_alloc_info+0x25/0x30
[ 428.520331][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 428.525618][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 429.480332][ T29] __sys_sendto+0x464/0x5e0
[ 429.484934][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 429.490046][ T29] ? errseq_sample+0x44/0x70
[ 429.494644][ T29] ? preempt_count_add+0x90/0x1b0
[ 429.499656][ T29] ? fd_install+0x1b9/0x2d0
[ 429.504196][ T29] __x64_sys_sendto+0xe5/0x100
[ 429.508962][ T29] x64_sys_call+0x83/0x9a0
[ 429.513423][ T29] do_syscall_64+0x4c/0xa0
[ 429.517848][ T29] ? clear_bhb_loop+0x30/0x80
[ 429.522574][ T29] ? clear_bhb_loop+0x30/0x80
[ 429.527265][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 430.480265][ T29] RIP: 0033:0x7fbf86791583
[ 430.484805][ T29] RSP: 002b:00007fff2c2f32b8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 430.493309][ T29] RAX: ffffffffffffffda RBX: 00007fbf87514620 RCX: 00007fbf86791583
[ 430.501309][ T29] RDX: 000000000000002c RSI: 00007fbf87514670 RDI: 0000000000000003
[ 430.509313][ T29] RBP: 0000000000000001 R08: 00007fff2c2f32d4 R09: 000000000000000c
[ 430.517331][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 430.525339][ T29] R13: 0000000000000000 R14: 00007fbf87514670 R15: 0000000000000000
[ 431.480008][ T29]
[ 431.483082][ T29] INFO: task syz-executor:400 blocked for more than 149 seconds.
[ 431.490834][ T29] Not tainted syzkaller #0
[ 431.495769][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 431.504473][ T29] task:syz-executor state:D stack:28304 pid:400 ppid:1 flags:0x00004004
[ 431.513758][ T29] Call Trace:
[ 431.517035][ T29]
[ 431.519976][ T29] __schedule+0xb87/0x14e0
[ 431.524405][ T29] ? __sched_text_start+0x8/0x8
[ 431.529245][ T29] ? __mutex_add_waiter+0xc7/0x270
[ 432.480120][ T29] ? __kasan_check_write+0x14/0x20
[ 432.485283][ T29] ? trace_contention_begin+0xa0/0xa0
[ 432.490731][ T29] schedule+0xbd/0x170
[ 432.494850][ T29] schedule_preempt_disabled+0x13/0x20
[ 432.500383][ T29] __mutex_lock+0x74a/0x16d0
[ 432.504992][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 432.511806][ T29] ? selinux_capable+0x29c/0x380
[ 432.516753][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 432.522089][ T29] ? kvm_sched_clock_read+0x18/0x40
[ 432.527301][ T29] ? __reset_page_owner+0x190/0x190
[ 433.490035][ T29] ? cap_capable+0x1aa/0x230
[ 433.494683][ T29] __mutex_lock_slowpath+0xe/0x10
[ 433.499782][ T29] mutex_lock+0xf8/0x1a0
[ 433.504120][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 433.508984][ T29] ? ns_capable+0x8c/0xf0
[ 433.513361][ T29] ? netlink_net_capable+0x125/0x160
[ 433.518667][ T29] rtnetlink_rcv_msg+0x8c6/0xcf0
[ 433.523661][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 433.529128][ T29] ? kernel_text_address+0xa0/0xd0
[ 434.480281][ T29] ? __kernel_text_address+0xd/0x30
[ 434.485623][ T29] ? unwind_get_return_address+0x4d/0x90
[ 434.491744][ T29] ? memcpy+0x56/0x70
[ 434.495746][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 434.501395][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 434.507158][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 434.512537][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 434.518070][ T29] ? __alloc_skb+0xea/0x4b0
[ 434.522621][ T29] ? avc_has_perm+0x158/0x240
[ 434.527316][ T29] ? __alloc_skb+0x236/0x4b0
[ 435.490180][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 435.495219][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 435.500322][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 435.505731][ T29] netlink_rcv_skb+0x1f2/0x440
[ 435.510570][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 435.516070][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 435.521401][ T29] ? __netlink_lookup+0x387/0x3b0
[ 435.526430][ T29] rtnetlink_rcv+0x1c/0x20
[ 436.480109][ T29] netlink_unicast+0x8ab/0xa30
[ 436.485023][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 436.489796][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 436.495163][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 436.500764][ T29] __sys_sendto+0x464/0x5e0
[ 436.505283][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 436.510400][ T29] ? do_user_addr_fault+0x9ac/0x1050
[ 436.515729][ T29] __x64_sys_sendto+0xe5/0x100
[ 436.520566][ T29] x64_sys_call+0x83/0x9a0
[ 436.525005][ T29] do_syscall_64+0x4c/0xa0
[ 436.529408][ T29] ? clear_bhb_loop+0x30/0x80
[ 437.479966][ T29] ? clear_bhb_loop+0x30/0x80
[ 437.484697][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 437.490628][ T29] RIP: 0033:0x7f534eb91583
[ 437.495153][ T29] RSP: 002b:00007ffccdb98128 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 437.503595][ T29] RAX: ffffffffffffffda RBX: 00007f534f914620 RCX: 00007f534eb91583
[ 437.511649][ T29] RDX: 0000000000000028 RSI: 00007f534f914670 RDI: 0000000000000003
[ 437.519618][ T29] RBP: 0000000000000001 R08: 00007ffccdb98144 R09: 000000000000000c
[ 437.527595][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 438.480126][ T29] R13: 0000000000000000 R14: 00007f534f914670 R15: 0000000000000000
[ 438.488153][ T29]
[ 438.491374][ T29] NMI backtrace for cpu 0
[ 438.495704][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 438.502881][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 438.512926][ T29] Call Trace:
[ 438.516198][ T29]
[ 438.519109][ T29] __dump_stack+0x21/0x24
[ 438.523426][ T29] dump_stack_lvl+0xee/0x150
[ 438.528016][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 438.533035][ T29] dump_stack+0x15/0x24
[ 438.537200][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 438.542151][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 438.547710][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 438.553176][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 438.558131][ T29] ? memcpy+0x56/0x70
[ 438.562126][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 438.568109][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 438.574092][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 438.580042][ T29] watchdog+0xd44/0xe80
[ 438.584206][ T29] ? __cfi_watchdog+0x10/0x10
[ 438.588886][ T29] ? __kasan_check_read+0x11/0x20
[ 438.593904][ T29] ? __kthread_parkme+0x142/0x180
[ 438.598928][ T29] kthread+0x281/0x320
[ 438.603003][ T29] ? __cfi_watchdog+0x10/0x10
[ 438.607699][ T29] ? __cfi_kthread+0x10/0x10
[ 438.612288][ T29] ret_from_fork+0x1f/0x30
[ 438.616735][ T29]
[ 438.619844][ T29] Sending NMI from CPU 0 to CPUs 1:
[ 438.625050][ C1] NMI backtrace for cpu 1
[ 438.625059][ C1] CPU: 1 PID: 377 Comm: syz.2.17 Not tainted syzkaller #0
[ 438.625073][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 438.625080][ C1] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x1/0x90
[ 438.625116][ C1] Code: 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 d0 3f 92 7e 65 8b 0d d1 3f 92 7e
[ 438.625128][ C1] RSP: 0018:ffffc90000aa6ef8 EFLAGS: 00000286
[ 438.625141][ C1] RAX: fff799136fa46000 RBX: 0000000000000012 RCX: ffff888114cbe540
[ 438.625163][ C1] RDX: 0000000000000000 RSI: 0000000000000013 RDI: 0000000000000040
[ 438.625171][ C1] RBP: ffffc90000aa6f40 R08: dffffc0000000000 R09: ffffed1024845780
[ 438.625181][ C1] R10: ffffed1024845780 R11: 1ffff1102484577f R12: 0000000000000013
[ 438.625191][ C1] R13: ffff8881f6400000 R14: fe70bb0a75a6b60f R15: 9fb83d4cf51335e4
[ 438.625202][ C1] FS: 000055555c188500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 438.625215][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 438.625224][ C1] CR2: 00007ffdb592c178 CR3: 0000000114787000 CR4: 00000000003506a0
[ 438.625237][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 438.625245][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 438.625253][ C1] Call Trace:
[ 438.625257][ C1]
[ 438.625262][ C1] ? find_inode_by_ino_rcu+0x5a/0x1e0
[ 438.625281][ C1] ext4_mark_iloc_dirty+0x777/0x1930
[ 438.625300][ C1] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 438.625319][ C1] __ext4_mark_inode_dirty+0x423/0x600
[ 438.625336][ C1] ext4_dirty_inode+0xbd/0x100
[ 438.625353][ C1] ? __cfi_ext4_dirty_inode+0x10/0x10
[ 438.625371][ C1] __mark_inode_dirty+0x203/0x9d0
[ 438.625387][ C1] ext4_xattr_block_set+0x167d/0x3270
[ 438.625412][ C1] ? ext4_xattr_block_find+0x310/0x310
[ 438.625432][ C1] ? ext4_xattr_block_find+0xf0/0x310
[ 438.625451][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 438.625472][ C1] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 438.625491][ C1] ? selinux_inode_init_security+0x67d/0x950
[ 438.625508][ C1] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 438.625523][ C1] ext4_initxattrs+0xa6/0x110
[ 438.625538][ C1] security_inode_init_security+0x28c/0x3a0
[ 438.625553][ C1] ? posix_acl_create+0x118/0x440
[ 438.625571][ C1] ? __cfi_ext4_initxattrs+0x10/0x10
[ 438.625586][ C1] ? __cfi_security_inode_init_security+0x10/0x10
[ 438.625602][ C1] ? dquot_alloc_inode+0x1d3/0x810
[ 438.625619][ C1] ? __cfi_inode_set_flags+0x10/0x10
[ 438.625637][ C1] ? __cfi_ext4_init_acl+0x10/0x10
[ 438.625651][ C1] ? _raw_spin_unlock+0x4c/0x70
[ 438.625667][ C1] ext4_init_security+0x34/0x40
[ 438.625681][ C1] __ext4_new_inode+0x2c29/0x3640
[ 438.625705][ C1] ? __cfi___ext4_new_inode+0x10/0x10
[ 438.625725][ C1] ? dquot_initialize+0x20/0x20
[ 438.625743][ C1] ? ext4_lookup+0x2ce/0x6d0
[ 438.625761][ C1] ext4_create+0x22a/0x460
[ 438.625781][ C1] ? __cfi_ext4_create+0x10/0x10
[ 438.625798][ C1] ? selinux_inode_create+0x22/0x30
[ 438.625812][ C1] ? security_inode_create+0xd2/0x120
[ 438.625827][ C1] ? __cfi_ext4_create+0x10/0x10
[ 438.625844][ C1] path_openat+0x11e3/0x2f50
[ 438.625865][ C1] ? do_filp_open+0x3c0/0x3c0
[ 438.625882][ C1] do_filp_open+0x1c1/0x3c0
[ 438.625897][ C1] ? __cfi_do_filp_open+0x10/0x10
[ 438.625915][ C1] ? alloc_fd+0x4e6/0x590
[ 438.625928][ C1] do_sys_openat2+0x185/0x7e0
[ 438.625946][ C1] ? __se_sys_futex+0x273/0x2e0
[ 438.625959][ C1] ? do_sys_open+0xe0/0xe0
[ 438.625976][ C1] ? __x64_sys_futex+0x100/0x100
[ 438.625988][ C1] ? do_user_addr_fault+0xd36/0x1050
[ 438.626008][ C1] __x64_sys_creat+0x8e/0xb0
[ 438.626027][ C1] x64_sys_call+0x116/0x9a0
[ 438.626043][ C1] do_syscall_64+0x4c/0xa0
[ 438.626057][ C1] ? clear_bhb_loop+0x30/0x80
[ 438.626077][ C1] ? clear_bhb_loop+0x30/0x80
[ 438.626096][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 438.626115][ C1] RIP: 0033:0x7f7f9cd8f749
[ 438.626126][ C1] 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
[ 438.626137][ C1] RSP: 002b:00007fff50ffe348 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 438.626156][ C1] RAX: ffffffffffffffda RBX: 00007f7f9cfe5fa0 RCX: 00007f7f9cd8f749
[ 438.626166][ C1] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 438.626175][ C1] RBP: 00007f7f9ce13f91 R08: 0000000000000000 R09: 0000000000000000
[ 438.626183][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 438.626191][ C1] R13: 00007f7f9cfe5fa0 R14: 00007f7f9cfe5fa0 R15: 0000000000000002
[ 438.626202][ C1]
[ 461.479841][ T29] INFO: task kworker/0:1:19 blocked for more than 137 seconds.
[ 461.487441][ T29] Not tainted syzkaller #0
[ 461.492430][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 461.501229][ T29] task:kworker/0:1 state:D stack:25472 pid:19 ppid:2 flags:0x00004000
[ 461.510572][ T29] Workqueue: ipv6_addrconf addrconf_verify_work
[ 461.516909][ T29] Call Trace:
[ 461.520302][ T29]
[ 461.523244][ T29] __schedule+0xb87/0x14e0
[ 461.527661][ T29] ? __sched_text_start+0x8/0x8
[ 462.480218][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 462.485474][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 462.490911][ T29] schedule+0xbd/0x170
[ 462.495007][ T29] schedule_preempt_disabled+0x13/0x20
[ 462.500479][ T29] __mutex_lock+0x74a/0x16d0
[ 462.505083][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 462.511889][ T29] ? __mod_timer+0x856/0xbf0
[ 462.516487][ T29] ? add_timer+0x68/0x80
[ 462.520739][ T29] ? queue_delayed_work_on+0x101/0x150
[ 462.526203][ T29] __mutex_lock_slowpath+0xe/0x10
[ 463.480024][ T29] mutex_lock+0xf8/0x1a0
[ 463.484393][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 463.489248][ T29] ? _raw_spin_lock_irq+0x8f/0xe0
[ 463.494325][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 463.499951][ T29] ? wg_ratelimiter_gc_entries+0x404/0x430
[ 463.505788][ T29] rtnl_lock+0x15/0x20
[ 463.509906][ T29] addrconf_verify_work+0x19/0x30
[ 463.514950][ T29] process_one_work+0x71f/0xc40
[ 463.519941][ T29] worker_thread+0xa29/0x11f0
[ 463.524632][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 464.480287][ T29] kthread+0x281/0x320
[ 464.484440][ T29] ? __cfi_worker_thread+0x10/0x10
[ 464.489564][ T29] ? __cfi_kthread+0x10/0x10
[ 464.494696][ T29] ret_from_fork+0x1f/0x30
[ 464.499206][ T29]
[ 464.502268][ T29] INFO: task kworker/1:0:24 blocked for more than 203 seconds.
[ 464.509876][ T29] Not tainted syzkaller #0
[ 464.514809][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 464.523522][ T29] task:kworker/1:0 state:D stack:25536 pid:24 ppid:2 flags:0x00004000
[ 465.480065][ T29] Workqueue: ipv6_addrconf addrconf_verify_work
[ 465.486368][ T29] Call Trace:
[ 465.489658][ T29]
[ 465.492758][ T29] __schedule+0xb87/0x14e0
[ 465.497300][ T29] ? __sched_text_start+0x8/0x8
[ 465.502229][ T29] ? __mutex_add_waiter+0xc7/0x270
[ 465.507500][ T29] ? __kasan_check_write+0x14/0x20
[ 465.512643][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 465.517863][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 465.523113][ T29] schedule+0xbd/0x170
[ 465.527194][ T29] schedule_preempt_disabled+0x13/0x20
[ 466.480038][ T29] __mutex_lock+0x74a/0x16d0
[ 466.484690][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 466.491522][ T29] ? __kasan_check_write+0x14/0x20
[ 466.496694][ T29] ? __switch_to+0x51f/0xe30
[ 466.501399][ T29] ? __cfi___switch_to+0x10/0x10
[ 466.506357][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 466.511253][ T29] __mutex_lock_slowpath+0xe/0x10
[ 466.516295][ T29] mutex_lock+0xf8/0x1a0
[ 466.520576][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 466.525439][ T29] ? __schedule+0xb8f/0x14e0
[ 467.480017][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 467.485647][ T29] rtnl_lock+0x15/0x20
[ 467.489868][ T29] addrconf_verify_work+0x19/0x30
[ 467.494952][ T29] process_one_work+0x71f/0xc40
[ 467.499847][ T29] worker_thread+0xa29/0x11f0
[ 467.504542][ T29] kthread+0x281/0x320
[ 467.508600][ T29] ? __cfi_worker_thread+0x10/0x10
[ 467.513749][ T29] ? __cfi_kthread+0x10/0x10
[ 467.518346][ T29] ret_from_fork+0x1f/0x30
[ 467.522817][ T29]
[ 467.525870][ T29] NMI backtrace for cpu 1
[ 467.530180][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 467.537379][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 467.547419][ T29] Call Trace:
[ 467.550686][ T29]
[ 467.553603][ T29] __dump_stack+0x21/0x24
[ 467.557920][ T29] dump_stack_lvl+0xee/0x150
[ 467.562501][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 467.567520][ T29] dump_stack+0x15/0x24
[ 467.571665][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 467.576597][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 467.582135][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 467.587586][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 467.592516][ T29] ? memcpy+0x56/0x70
[ 467.596492][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 467.602461][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 467.608434][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 467.614312][ T29] watchdog+0xd44/0xe80
[ 467.618466][ T29] ? __cfi_watchdog+0x10/0x10
[ 467.623143][ T29] ? __kasan_check_read+0x11/0x20
[ 467.628157][ T29] ? __kthread_parkme+0x142/0x180
[ 467.633175][ T29] kthread+0x281/0x320
[ 467.637235][ T29] ? __cfi_watchdog+0x10/0x10
[ 467.641924][ T29] ? __cfi_kthread+0x10/0x10
[ 467.646507][ T29] ret_from_fork+0x1f/0x30
[ 467.650918][ T29]
[ 467.654010][ T29] Sending NMI from CPU 1 to CPUs 0:
[ 467.659222][ C0] NMI backtrace for cpu 0
[ 467.659230][ C0] CPU: 0 PID: 393 Comm: syz.3.18 Not tainted syzkaller #0
[ 467.659244][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 467.659252][ C0] RIP: 0010:__ext4_journal_get_write_access+0x93/0x6c0
[ 467.659270][ C0] Code: 4c 24 40 48 c1 e9 03 48 b8 f1 f1 f1 f1 00 00 f3 f3 48 89 4c 24 38 4a 89 04 29 e8 d8 14 8e ff 49 8d 5f 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 4e 8e d2 ff 48 8b 1b 48 83 c3 38
[ 467.659282][ C0] RSP: 0018:ffffc90000bc6f20 EFLAGS: 00000a02
[ 467.659296][ C0] RAX: 1ffff11022f2e12c RBX: ffff888117970960 RCX: ffff888117e29440
[ 467.659306][ C0] RDX: 0000000000000000 RSI: 0000000000001725 RDI: ffffffff863ae266
[ 467.659316][ C0] RBP: ffffc90000bc7000 R08: ffff888117970930 R09: 0000000000000001
[ 467.659325][ C0] R10: ffffed1022f2e127 R11: 1ffff11022f2e126 R12: ffffc90000bc70a0
[ 467.659336][ C0] R13: dffffc0000000000 R14: 0000000000000002 R15: ffff888117970930
[ 467.659345][ C0] FS: 000055559400a500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 467.659358][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 467.659368][ C0] CR2: 00007ffebdcf9228 CR3: 000000010d5dc000 CR4: 00000000003506b0
[ 467.659380][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 467.659388][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 467.659396][ C0] Call Trace:
[ 467.659400][ C0]
[ 467.659405][ C0] ? ext4_get_inode_loc+0xf0/0xf0
[ 467.659423][ C0] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 467.659438][ C0] ? __kasan_check_write+0x14/0x20
[ 467.659450][ C0] ? _raw_spin_lock+0x8e/0xe0
[ 467.659465][ C0] ? __cfi__raw_spin_lock+0x10/0x10
[ 467.659481][ C0] ext4_reserve_inode_write+0x1f2/0x2e0
[ 467.659501][ C0] __ext4_mark_inode_dirty+0xb2/0x600
[ 467.659518][ C0] ext4_dirty_inode+0xbd/0x100
[ 467.659535][ C0] ? __cfi_ext4_dirty_inode+0x10/0x10
[ 467.659553][ C0] __mark_inode_dirty+0x203/0x9d0
[ 467.659570][ C0] ext4_xattr_block_set+0x167d/0x3270
[ 467.659595][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 467.659614][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 467.659633][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 467.659654][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 467.659673][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 467.659690][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 467.659705][ C0] ext4_initxattrs+0xa6/0x110
[ 467.659720][ C0] security_inode_init_security+0x28c/0x3a0
[ 467.659735][ C0] ? posix_acl_create+0x118/0x440
[ 467.659753][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 467.659767][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 467.659783][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 467.659805][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 467.659824][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 467.659838][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 467.659853][ C0] ext4_init_security+0x34/0x40
[ 467.659867][ C0] __ext4_new_inode+0x2c29/0x3640
[ 467.659891][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 467.659911][ C0] ? dquot_initialize+0x20/0x20
[ 467.659929][ C0] ? ext4_lookup+0x2ce/0x6d0
[ 467.659947][ C0] ext4_create+0x22a/0x460
[ 467.659967][ C0] ? __cfi_ext4_create+0x10/0x10
[ 467.659985][ C0] ? selinux_inode_create+0x22/0x30
[ 467.659999][ C0] ? security_inode_create+0xd2/0x120
[ 467.660014][ C0] ? __cfi_ext4_create+0x10/0x10
[ 467.660031][ C0] path_openat+0x11e3/0x2f50
[ 467.660057][ C0] ? do_filp_open+0x3c0/0x3c0
[ 467.660074][ C0] do_filp_open+0x1c1/0x3c0
[ 467.660089][ C0] ? __cfi_do_filp_open+0x10/0x10
[ 467.660107][ C0] ? alloc_fd+0x4e6/0x590
[ 467.660120][ C0] do_sys_openat2+0x185/0x7e0
[ 467.660138][ C0] ? __se_sys_futex+0x273/0x2e0
[ 467.660151][ C0] ? do_sys_open+0xe0/0xe0
[ 467.660185][ C0] ? __x64_sys_futex+0x100/0x100
[ 467.660199][ C0] ? do_user_addr_fault+0xd36/0x1050
[ 467.660230][ C0] __x64_sys_creat+0x8e/0xb0
[ 467.660249][ C0] x64_sys_call+0x116/0x9a0
[ 467.660265][ C0] do_syscall_64+0x4c/0xa0
[ 467.660280][ C0] ? clear_bhb_loop+0x30/0x80
[ 467.660300][ C0] ? clear_bhb_loop+0x30/0x80
[ 467.660320][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 467.660355][ C0] RIP: 0033:0x7f005dd8f749
[ 467.660367][ 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
[ 467.660379][ C0] RSP: 002b:00007ffe9e79fc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 467.660393][ C0] RAX: ffffffffffffffda RBX: 00007f005dfe5fa0 RCX: 00007f005dd8f749
[ 467.660404][ C0] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 467.660413][ C0] RBP: 00007f005de13f91 R08: 0000000000000000 R09: 0000000000000000
[ 467.660422][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 467.660430][ C0] R13: 00007f005dfe5fa0 R14: 00007f005dfe5fa0 R15: 0000000000000002
[ 467.660443][ C0]