Warning: Permanently added '10.128.1.61' (ED25519) to the list of known hosts.
2026/01/05 20:10:27 parsed 1 programs
[ 325.216102][ T28] audit: type=1400 audit(1767643827.708:64): avc: denied { node_bind } for pid=284 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1
[ 325.236939][ T28] audit: type=1400 audit(1767643827.708:65): avc: denied { module_request } for pid=284 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
[ 326.389428][ T28] audit: type=1400 audit(1767643828.878:66): avc: denied { mounton } for pid=293 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
[ 326.393679][ T293] cgroup: Unknown subsys name 'net'
[ 326.412672][ T28] audit: type=1400 audit(1767643828.878:67): avc: denied { mount } for pid=293 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
[ 326.439733][ T28] audit: type=1400 audit(1767643828.918:68): avc: denied { unmount } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 326.440227][ T293] cgroup: Unknown subsys name 'devices'
[ 326.617845][ T293] cgroup: Unknown subsys name 'hugetlb'
[ 326.623508][ T293] cgroup: Unknown subsys name 'rlimit'
[ 326.766391][ T28] audit: type=1400 audit(1767643829.258:69): avc: denied { setattr } for pid=293 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
[ 326.789646][ T28] audit: type=1400 audit(1767643829.258:70): avc: denied { create } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 326.810188][ T28] audit: type=1400 audit(1767643829.258:71): avc: denied { write } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 326.830560][ T28] audit: type=1400 audit(1767643829.258:72): avc: denied { read } for pid=293 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
[ 326.850953][ T28] audit: type=1400 audit(1767643829.258:73): avc: denied { mounton } for pid=293 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
[ 326.858245][ T295] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
[ 326.913226][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 327.649191][ T301] request_module fs-gadgetfs succeeded, but still no fs?
[ 327.823110][ T310] bridge0: port 1(bridge_slave_0) entered blocking state
[ 327.830295][ T310] bridge0: port 1(bridge_slave_0) entered disabled state
[ 327.837850][ T310] device bridge_slave_0 entered promiscuous mode
[ 327.845671][ T310] bridge0: port 2(bridge_slave_1) entered blocking state
[ 327.853148][ T310] bridge0: port 2(bridge_slave_1) entered disabled state
[ 327.860676][ T310] device bridge_slave_1 entered promiscuous mode
[ 327.922135][ T310] bridge0: port 2(bridge_slave_1) entered blocking state
[ 327.929206][ T310] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 327.936667][ T310] bridge0: port 1(bridge_slave_0) entered blocking state
[ 327.943728][ T310] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 327.964139][ T10] bridge0: port 1(bridge_slave_0) entered disabled state
[ 327.971567][ T10] bridge0: port 2(bridge_slave_1) entered disabled state
[ 327.979474][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 327.986999][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 327.997393][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 328.005658][ T10] bridge0: port 1(bridge_slave_0) entered blocking state
[ 328.012684][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 328.021693][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 328.030028][ T10] bridge0: port 2(bridge_slave_1) entered blocking state
[ 328.037389][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 328.051527][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 328.060885][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 328.075207][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 328.087629][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 328.096259][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 328.103727][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 328.113153][ T310] device veth0_vlan entered promiscuous mode
[ 328.123678][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 328.132861][ T310] device veth1_macvtap entered promiscuous mode
[ 328.142563][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 328.152788][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 328.187745][ T310] syz-executor (310) used greatest stack depth: 21600 bytes left
[ 328.876512][ T268] device bridge_slave_1 left promiscuous mode
[ 328.882708][ T268] bridge0: port 2(bridge_slave_1) entered disabled state
[ 328.896427][ T268] device bridge_slave_0 left promiscuous mode
[ 328.902606][ T268] bridge0: port 1(bridge_slave_0) entered disabled state
[ 328.916785][ T268] device veth1_macvtap left promiscuous mode
[ 328.922925][ T268] device veth0_vlan left promiscuous mode
2026/01/05 20:10:31 executed programs: 0
[ 329.069637][ T366] bridge0: port 1(bridge_slave_0) entered blocking state
[ 329.076950][ T366] bridge0: port 1(bridge_slave_0) entered disabled state
[ 329.084334][ T366] device bridge_slave_0 entered promiscuous mode
[ 329.091482][ T366] bridge0: port 2(bridge_slave_1) entered blocking state
[ 329.098910][ T366] bridge0: port 2(bridge_slave_1) entered disabled state
[ 329.106521][ T366] device bridge_slave_1 entered promiscuous mode
[ 329.158251][ T366] bridge0: port 2(bridge_slave_1) entered blocking state
[ 329.165294][ T366] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 329.172653][ T366] bridge0: port 1(bridge_slave_0) entered blocking state
[ 329.179712][ T366] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 329.199346][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 329.206975][ T10] bridge0: port 1(bridge_slave_0) entered disabled state
[ 329.214129][ T10] bridge0: port 2(bridge_slave_1) entered disabled state
[ 329.223805][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 329.231998][ T10] bridge0: port 1(bridge_slave_0) entered blocking state
[ 329.239147][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 329.248218][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 329.256611][ T10] bridge0: port 2(bridge_slave_1) entered blocking state
[ 329.263671][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 329.277623][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 329.296297][ T366] device veth0_vlan entered promiscuous mode
[ 329.302916][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 329.311567][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 329.320044][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 329.327966][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 329.335606][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 329.347815][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 329.357671][ T366] device veth1_macvtap entered promiscuous mode
[ 329.368744][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 329.378742][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 329.411205][ T377] loop2: detected capacity change from 0 to 1024
[ 329.418115][ T377] =======================================================
[ 329.418115][ T377] WARNING: The mand mount option has been deprecated and
[ 329.418115][ T377] and is ignored by this kernel. Remove the mand
[ 329.418115][ T377] option from the mount to silence this warning.
[ 329.418115][ T377] =======================================================
[ 329.453880][ T377] EXT4-fs: Ignoring removed oldalloc option
[ 329.460232][ T377] EXT4-fs: Ignoring removed orlov option
[ 329.477923][ T377] EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback.
[ 330.765365][ C1] sched: RT throttling activated
[ 344.613004][ T383] bridge0: port 1(bridge_slave_0) entered blocking state
[ 344.620532][ T383] bridge0: port 1(bridge_slave_0) entered disabled state
[ 344.628285][ T383] device bridge_slave_0 entered promiscuous mode
[ 344.635805][ T383] bridge0: port 2(bridge_slave_1) entered blocking state
[ 344.642888][ T383] bridge0: port 2(bridge_slave_1) entered disabled state
[ 344.650692][ T383] device bridge_slave_1 entered promiscuous mode
[ 344.721038][ T383] bridge0: port 2(bridge_slave_1) entered blocking state
[ 344.728187][ T383] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 344.735504][ T383] bridge0: port 1(bridge_slave_0) entered blocking state
[ 344.742574][ T383] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 344.764930][ T10] bridge0: port 1(bridge_slave_0) entered disabled state
[ 344.772235][ T10] bridge0: port 2(bridge_slave_1) entered disabled state
[ 344.780039][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 344.787727][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 344.797178][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 344.805410][ T10] bridge0: port 1(bridge_slave_0) entered blocking state
[ 344.812556][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state
2026/01/05 20:10:47 executed programs: 4
[ 344.841572][ T383] device veth0_vlan entered promiscuous mode
[ 344.854674][ T383] device veth1_macvtap entered promiscuous mode
[ 344.898863][ T394] loop3: detected capacity change from 0 to 1024
[ 344.916364][ T394] EXT4-fs: Ignoring removed oldalloc option
[ 344.931204][ T394] EXT4-fs: Ignoring removed orlov option
[ 344.947387][ T394] EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
[ 444.985317][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 444.992345][ C1] (detected by 1, t=10002 jiffies, g=1629, q=449 ncpus=2)
[ 444.999586][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294981705-4294971702), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 445.012983][ C1] rcu: rcu_preempt kthread starved for 10004 jiffies! g1629 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 445.024126][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 445.034209][ C1] rcu: RCU grace-period kthread stack dump:
[ 445.040116][ C1] task:rcu_preempt state:R running task stack:28352 pid:14 ppid:2 flags:0x00004000
[ 445.050931][ C1] Call Trace:
[ 445.054229][ C1]
[ 445.057189][ C1] __schedule+0xb87/0x14e0
[ 445.061650][ C1] ? __sched_text_start+0x8/0x8
[ 445.066539][ C1] schedule+0xbd/0x170
[ 445.070649][ C1] schedule_timeout+0x12c/0x2e0
[ 445.075532][ C1] ? __cfi_schedule_timeout+0x10/0x10
[ 445.080925][ C1] ? __cfi_process_timeout+0x10/0x10
[ 445.086246][ C1] ? prepare_to_swait_event+0x308/0x320
[ 445.091824][ C1] rcu_gp_fqs_loop+0x2d8/0x10a0
[ 445.096713][ C1] ? rcu_gp_init+0xf10/0xf10
[ 445.101413][ C1] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 445.107249][ C1] ? finish_swait+0x17d/0x1b0
[ 445.111967][ C1] rcu_gp_kthread+0x95/0x370
[ 445.116577][ C1] ? __cfi_rcu_gp_kthread+0x10/0x10
[ 445.121807][ C1] ? set_cpus_allowed_ptr+0x82/0xc0
[ 445.127207][ C1] ? __kasan_check_read+0x11/0x20
[ 445.132251][ C1] ? __kthread_parkme+0x142/0x180
[ 445.137299][ C1] kthread+0x281/0x320
[ 445.141392][ C1] ? __cfi_rcu_gp_kthread+0x10/0x10
[ 445.146624][ C1] ? __cfi_kthread+0x10/0x10
[ 445.151234][ C1] ret_from_fork+0x1f/0x30
[ 445.155677][ C1]
[ 445.158715][ C1] rcu: Stack dump where RCU GP kthread last ran:
[ 445.165131][ C1] Sending NMI from CPU 1 to CPUs 0:
[ 445.170363][ C0] NMI backtrace for cpu 0
[ 445.170372][ C0] CPU: 0 PID: 398 Comm: syz.3.19 Not tainted syzkaller #0
[ 445.170388][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 445.170402][ C0] RIP: 0010:__entry_find+0x128/0x3d0
[ 445.170426][ C0] Code: 4d 85 e4 75 3c e8 b8 49 9a ff 45 31 e4 e9 9c 01 00 00 e8 ab 49 9a ff eb 05 e8 a4 49 9a ff 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 <74> 08 4c 89 e7 e8 be ca de ff 4d 8b 24 24 49 83 e4 fe 4d 85 e4 74
[ 445.170440][ C0] RSP: 0018:ffffc90000ac6bd0 EFLAGS: 00000246
[ 445.170455][ C0] RAX: 1ffff11022f94bec RBX: 0000000000000016 RCX: ffff888117c98000
[ 445.170467][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
[ 445.170477][ C0] RBP: ffffc90000ac6c10 R08: dffffc0000000000 R09: ffffed1022f94bed
[ 445.170489][ C0] R10: ffffed1022f94bed R11: 1ffff11022f94bec R12: ffff888117ca5f60
[ 445.170502][ C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000048993a89
[ 445.170513][ C0] FS: 0000555570c26500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 445.170528][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 445.170539][ C0] CR2: 00007ffe35d850a8 CR3: 00000001140de000 CR4: 00000000003506b0
[ 445.170554][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 445.170563][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 445.170573][ C0] Call Trace:
[ 445.170578][ C0]
[ 445.170585][ C0] mb_cache_entry_find_first+0x1d/0x30
[ 445.170606][ C0] ext4_xattr_block_set+0xc46/0x3270
[ 445.170636][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 445.170659][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 445.170681][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 445.170707][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 445.170728][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 445.170748][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 445.170772][ C0] ext4_initxattrs+0xa6/0x110
[ 445.170790][ C0] security_inode_init_security+0x28c/0x3a0
[ 445.170808][ C0] ? posix_acl_create+0x118/0x440
[ 445.170829][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 445.170847][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 445.170866][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 445.170887][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 445.170908][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 445.170925][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 445.170945][ C0] ext4_init_security+0x34/0x40
[ 445.170961][ C0] __ext4_new_inode+0x2c29/0x3640
[ 445.170990][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 445.171013][ C0] ? dquot_initialize+0x20/0x20
[ 445.171033][ C0] ? may_create+0x60c/0x810
[ 445.171054][ C0] ext4_create+0x22a/0x460
[ 445.171077][ C0] ? __cfi_ext4_create+0x10/0x10
[ 445.171098][ C0] ? selinux_inode_create+0x22/0x30
[ 445.171115][ C0] ? security_inode_create+0xd2/0x120
[ 445.171132][ C0] ? __cfi_ext4_create+0x10/0x10
[ 445.171153][ C0] path_openat+0x11e3/0x2f50
[ 445.171177][ C0] ? do_filp_open+0x3c0/0x3c0
[ 445.171197][ C0] do_filp_open+0x1c1/0x3c0
[ 445.171215][ C0] ? __cfi_do_filp_open+0x10/0x10
[ 445.171237][ C0] ? getname_kernel+0x59/0x2e0
[ 445.171252][ C0] ? memcpy+0x56/0x70
[ 445.171268][ C0] filp_open+0x173/0x1d0
[ 445.171289][ C0] ? __cfi_filp_open+0x10/0x10
[ 445.171310][ C0] ? getname_kernel+0x201/0x2e0
[ 445.171325][ C0] do_coredump+0x1b5d/0x21b0
[ 445.171351][ C0] ? __cfi_do_coredump+0x10/0x10
[ 445.171374][ C0] ? kmem_cache_free+0x12d/0x300
[ 445.171394][ C0] ? ____kasan_slab_free+0x13d/0x180
[ 445.171416][ C0] ? get_signal+0xa6c/0x1520
[ 445.171438][ C0] ? kmem_cache_free+0x12d/0x300
[ 445.171460][ C0] get_signal+0x11db/0x1520
[ 445.171486][ C0] arch_do_signal_or_restart+0xb0/0x1030
[ 445.171508][ C0] ? page_fault_oops+0x8d0/0x8d0
[ 445.171531][ C0] ? down_read_trylock+0x273/0x640
[ 445.171555][ C0] ? __cfi_arch_do_signal_or_restart+0x10/0x10
[ 445.171575][ C0] ? __bad_area_nosemaphore+0x303/0x620
[ 445.171600][ C0] ? do_user_addr_fault+0xd36/0x1050
[ 445.171622][ C0] exit_to_user_mode_loop+0x7a/0xb0
[ 445.171640][ C0] exit_to_user_mode_prepare+0x87/0xd0
[ 445.171657][ C0] irqentry_exit_to_user_mode+0x9/0x10
[ 445.171673][ C0] irqentry_exit+0x12/0x40
[ 445.171686][ C0] exc_page_fault+0x5e/0xb0
[ 445.171711][ C0] asm_exc_page_fault+0x27/0x30
[ 445.171733][ C0] RIP: 0033:0x7fe4e538f751
[ 445.171750][ C0] Code: 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 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
[ 445.171768][ C0] RSP: 002b:0000000000000030 EFLAGS: 00010217
[ 445.171780][ C0] RAX: 0000000000000000 RBX: 00007fe4e55e5fa0 RCX: 00007fe4e538f749
[ 445.171791][ C0] RDX: 0000000000000000 RSI: 0000000000000030 RDI: 0000000000000600
[ 445.171800][ C0] RBP: 00007fe4e5413f91 R08: 0000000000000000 R09: 0000000000000000
[ 445.171810][ C0] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
[ 445.171820][ C0] R13: 00007fe4e55e5fa0 R14: 00007fe4e55e5fa0 R15: 0000000000000006
[ 445.171833][ C0]
[ 473.755343][ T29] INFO: task kworker/u4:1:10 blocked for more than 126 seconds.
[ 473.763419][ T29] Not tainted syzkaller #0
[ 473.770462][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 473.779406][ T29] task:kworker/u4:1 state:D stack:21472 pid:10 ppid:2 flags:0x00004000
[ 473.788703][ T29] Workqueue: events_unbound linkwatch_event
[ 473.794740][ T29] Call Trace:
[ 473.798093][ T29]
[ 473.801038][ T29] __schedule+0xb87/0x14e0
[ 474.755534][ T29] ? __kasan_check_write+0x14/0x20
[ 474.760780][ T29] ? __sched_text_start+0x8/0x8
[ 474.766203][ T29] ? kthread_data+0x50/0xc0
[ 474.770805][ T29] ? wq_worker_sleeping+0x64/0x280
[ 474.776040][ T29] schedule+0xbd/0x170
[ 474.780133][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 474.785861][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 474.792099][ T29] ? unwind_next_frame+0x3d5/0x700
[ 474.797363][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 474.802682][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 475.767563][ T29] ? __kasan_check_write+0x14/0x20
[ 475.772725][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 475.778327][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 475.784565][ T29] ? _raw_spin_lock+0x8e/0xe0
[ 475.789352][ T29] ? __cfi__raw_spin_lock+0x10/0x10
[ 475.794610][ T29] ? __kasan_check_read+0x11/0x20
[ 475.799734][ T29] synchronize_net+0x28/0x40
[ 475.804355][ T29] dev_deactivate_many+0x6b6/0xbc0
[ 476.755623][ T29] ? dev_deactivate_many+0x2c6/0xbc0
[ 476.761108][ T29] dev_deactivate+0x10c/0x1a0
[ 476.765859][ T29] ? __cfi_dev_deactivate+0x10/0x10
[ 476.771083][ T29] ? __cfi_veth_get_iflink+0x10/0x10
[ 476.776473][ T29] ? _raw_write_unlock+0x2b/0x60
[ 476.781437][ T29] ? rfc2863_policy+0x23e/0x2b0
[ 476.786358][ T29] linkwatch_do_dev+0x10d/0x160
[ 476.791236][ T29] __linkwatch_run_queue+0x408/0x660
[ 476.796606][ T29] ? linkwatch_run_queue+0x20/0x20
[ 476.801790][ T29] ? __schedule+0xb8f/0x14e0
[ 477.758052][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 477.763660][ T29] linkwatch_event+0x4c/0x60
[ 477.768796][ T29] process_one_work+0x71f/0xc40
[ 477.773811][ T29] worker_thread+0xa29/0x11f0
[ 477.778574][ T29] kthread+0x281/0x320
[ 477.782739][ T29] ? __cfi_worker_thread+0x10/0x10
[ 477.787940][ T29] ? __cfi_kthread+0x10/0x10
[ 477.792641][ T29] ret_from_fork+0x1f/0x30
[ 477.797239][ T29]
[ 477.800303][ T29] INFO: task kworker/0:2:321 blocked for more than 130 seconds.
[ 478.755493][ T29] Not tainted syzkaller #0
[ 478.760533][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 478.769338][ T29] task:kworker/0:2 state:D stack:25088 pid:321 ppid:2 flags:0x00004000
[ 478.778662][ T29] Workqueue: ipv6_addrconf addrconf_dad_work
[ 478.784708][ T29] Call Trace:
[ 478.788114][ T29]
[ 478.791058][ T29] __schedule+0xb87/0x14e0
[ 478.795559][ T29] ? __sched_text_start+0x8/0x8
[ 478.800478][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 479.755980][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 479.761259][ T29] schedule+0xbd/0x170
[ 479.765585][ T29] schedule_preempt_disabled+0x13/0x20
[ 479.771194][ T29] __mutex_lock+0x74a/0x16d0
[ 479.775924][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 479.782699][ T29] ? calc_wheel_index+0x130/0x8b0
[ 479.787816][ T29] ? timer_update_keys+0xb0/0xb0
[ 479.792803][ T29] ? debug_smp_processor_id+0x17/0x20
[ 479.798227][ T29] ? get_nohz_timer_target+0x74/0x540
[ 479.803753][ T29] ? __cfi_get_nohz_timer_target+0x10/0x10
[ 480.756046][ T29] ? __kasan_check_write+0x14/0x20
[ 480.761221][ T29] ? enqueue_timer+0x1b6/0x480
[ 480.766081][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 480.771999][ T29] __mutex_lock_slowpath+0xe/0x10
[ 480.777060][ T29] mutex_lock+0xf8/0x1a0
[ 480.781312][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 480.786274][ T29] rtnl_lock+0x15/0x20
[ 480.790365][ T29] addrconf_dad_work+0xc4/0x14b0
[ 480.795356][ T29] ? __kasan_check_write+0x14/0x20
[ 480.800485][ T29] ? mutex_unlock+0x89/0x220
[ 480.805124][ T29] ? __cfi_addrconf_dad_work+0x10/0x10
[ 481.757469][ T29] ? __kasan_check_write+0x14/0x20
[ 481.762666][ T29] ? _raw_spin_lock_irq+0x8f/0xe0
[ 481.767792][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 481.773364][ T29] ? pwq_dec_nr_in_flight+0x18c/0x3c0
[ 481.778824][ T29] process_one_work+0x71f/0xc40
[ 481.783699][ T29] worker_thread+0xa29/0x11f0
[ 481.788440][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 481.793968][ T29] ? __kthread_parkme+0x142/0x180
[ 481.799078][ T29] kthread+0x281/0x320
[ 481.803172][ T29] ? __cfi_worker_thread+0x10/0x10
[ 482.757405][ T29] ? __cfi_kthread+0x10/0x10
[ 482.762061][ T29] ret_from_fork+0x1f/0x30
[ 482.766681][ T29]
[ 482.769890][ T29] NMI backtrace for cpu 1
[ 482.774308][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 482.781625][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 482.791708][ T29] Call Trace:
[ 482.795021][ T29]
[ 482.797976][ T29] __dump_stack+0x21/0x24
[ 482.802312][ T29] dump_stack_lvl+0xee/0x150
[ 482.806903][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 482.811941][ T29] dump_stack+0x15/0x24
[ 482.816122][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 482.821081][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 482.826630][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 482.832091][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 482.837035][ T29] ? memcpy+0x56/0x70
[ 482.841012][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 482.847085][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 482.853070][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 482.859053][ T29] watchdog+0xd44/0xe80
[ 482.863241][ T29] ? __cfi_watchdog+0x10/0x10
[ 482.867946][ T29] ? __kasan_check_read+0x11/0x20
[ 482.872970][ T29] ? __kthread_parkme+0x142/0x180
[ 482.877998][ T29] kthread+0x281/0x320
[ 482.882074][ T29] ? __cfi_watchdog+0x10/0x10
[ 482.886771][ T29] ? __cfi_kthread+0x10/0x10
[ 482.891374][ T29] ret_from_fork+0x1f/0x30
[ 482.895821][ T29]
[ 482.898962][ T29] Sending NMI from CPU 1 to CPUs 0:
[ 482.904219][ C0] NMI backtrace for cpu 0
[ 482.904229][ C0] CPU: 0 PID: 398 Comm: syz.3.19 Not tainted syzkaller #0
[ 482.904246][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 482.904255][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x36/0x60
[ 482.904285][ C0] Code: b0 43 92 7e 65 8b 15 b1 43 92 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 6c 0b 00 00 00 74 2c 8b 91 48 0b 00 00 <83> fa 02 75 21 48 8b 91 50 0b 00 00 48 8b 32 48 8d 7e 01 8b 89 4c
[ 482.904299][ C0] RSP: 0018:ffffc90000ac6a10 EFLAGS: 00000046
[ 482.904318][ C0] RAX: ffffffff81cc1866 RBX: 0000000000000000 RCX: ffff888117c98000
[ 482.904330][ C0] RDX: 0000000000000000 RSI: 0000000000000071 RDI: 0000000000000009
[ 482.904340][ C0] RBP: ffffc90000ac6a10 R08: dffffc0000000000 R09: ffffed1022f94bed
[ 482.904352][ C0] R10: ffffed1022f94bed R11: 1ffff11022f94bec R12: ffff88811155bd20
[ 482.904365][ C0] R13: 0000000000000009 R14: 0000000000035700 R15: 0000000000000071
[ 482.904375][ C0] FS: 0000555570c26500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 482.904389][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 482.904401][ C0] CR2: 00007f18e0115000 CR3: 00000001140de000 CR4: 00000000003506b0
[ 482.904416][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 482.904425][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 482.904435][ C0] Call Trace:
[ 482.904440][ C0]
[ 482.904445][ C0] __find_get_block+0x1d6/0xee0
[ 482.904494][ C0] ? __cfi___find_get_block+0x10/0x10
[ 482.904513][ C0] __getblk_gfp+0x2e/0x7d0
[ 482.904530][ C0] ? __cfi_wake_up_var+0x10/0x10
[ 482.904610][ C0] ? __kasan_check_write+0x14/0x20
[ 482.904627][ C0] __ext4_sb_bread_gfp+0x76/0x210
[ 482.904671][ C0] ext4_sb_bread+0x28/0x30
[ 482.904685][ C0] ext4_xattr_block_set+0xcd5/0x3270
[ 482.904714][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 482.904737][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 482.904760][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 482.904785][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 482.904807][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 482.904836][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 482.904855][ C0] ext4_initxattrs+0xa6/0x110
[ 482.904872][ C0] security_inode_init_security+0x28c/0x3a0
[ 482.904891][ C0] ? posix_acl_create+0x118/0x440
[ 482.904917][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 482.904934][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 482.904954][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 482.904975][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 482.905001][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 482.905018][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 482.905037][ C0] ext4_init_security+0x34/0x40
[ 482.905054][ C0] __ext4_new_inode+0x2c29/0x3640
[ 482.905083][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 482.905107][ C0] ? dquot_initialize+0x20/0x20
[ 482.905126][ C0] ? may_create+0x60c/0x810
[ 482.905146][ C0] ext4_create+0x22a/0x460
[ 482.905174][ C0] ? __cfi_ext4_create+0x10/0x10
[ 482.905195][ C0] ? selinux_inode_create+0x22/0x30
[ 482.905211][ C0] ? security_inode_create+0xd2/0x120
[ 482.905229][ C0] ? __cfi_ext4_create+0x10/0x10
[ 482.905249][ C0] path_openat+0x11e3/0x2f50
[ 482.905273][ C0] ? do_filp_open+0x3c0/0x3c0
[ 482.905298][ C0] do_filp_open+0x1c1/0x3c0
[ 482.905316][ C0] ? __cfi_do_filp_open+0x10/0x10
[ 482.905339][ C0] ? getname_kernel+0x59/0x2e0
[ 482.905354][ C0] ? memcpy+0x56/0x70
[ 482.905369][ C0] filp_open+0x173/0x1d0
[ 482.905390][ C0] ? __cfi_filp_open+0x10/0x10
[ 482.905413][ C0] ? getname_kernel+0x201/0x2e0
[ 482.905428][ C0] do_coredump+0x1b5d/0x21b0
[ 482.905454][ C0] ? __cfi_do_coredump+0x10/0x10
[ 482.905478][ C0] ? kmem_cache_free+0x12d/0x300
[ 482.905499][ C0] ? ____kasan_slab_free+0x13d/0x180
[ 482.905522][ C0] ? get_signal+0xa6c/0x1520
[ 482.905587][ C0] ? kmem_cache_free+0x12d/0x300
[ 482.905610][ C0] get_signal+0x11db/0x1520
[ 482.905636][ C0] arch_do_signal_or_restart+0xb0/0x1030
[ 482.905711][ C0] ? page_fault_oops+0x8d0/0x8d0
[ 482.905752][ C0] ? down_read_trylock+0x273/0x640
[ 482.905812][ C0] ? __cfi_arch_do_signal_or_restart+0x10/0x10
[ 482.905832][ C0] ? __bad_area_nosemaphore+0x303/0x620
[ 482.905856][ C0] ? do_user_addr_fault+0xd36/0x1050
[ 482.905878][ C0] exit_to_user_mode_loop+0x7a/0xb0
[ 482.905896][ C0] exit_to_user_mode_prepare+0x87/0xd0
[ 482.905913][ C0] irqentry_exit_to_user_mode+0x9/0x10
[ 482.905929][ C0] irqentry_exit+0x12/0x40
[ 482.905942][ C0] exc_page_fault+0x5e/0xb0
[ 482.905966][ C0] asm_exc_page_fault+0x27/0x30
[ 482.905988][ C0] RIP: 0033:0x7fe4e538f751
[ 482.906002][ C0] Code: 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 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
[ 482.906014][ C0] RSP: 002b:0000000000000030 EFLAGS: 00010217
[ 482.906027][ C0] RAX: 0000000000000000 RBX: 00007fe4e55e5fa0 RCX: 00007fe4e538f749
[ 482.906038][ C0] RDX: 0000000000000000 RSI: 0000000000000030 RDI: 0000000000000600
[ 482.906048][ C0] RBP: 00007fe4e5413f91 R08: 0000000000000000 R09: 0000000000000000
[ 482.906058][ C0] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
[ 482.906067][ C0] R13: 00007fe4e55e5fa0 R14: 00007fe4e55e5fa0 R15: 0000000000000006
[ 482.906081][ C0]
[ 505.756143][ T29] INFO: task kworker/u4:1:10 blocked for more than 158 seconds.
[ 505.763913][ T29] Not tainted syzkaller #0
[ 505.768930][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 505.777673][ T29] task:kworker/u4:1 state:D stack:21472 pid:10 ppid:2 flags:0x00004000
[ 505.787003][ T29] Workqueue: events_unbound linkwatch_event
[ 505.792951][ T29] Call Trace:
[ 505.796319][ T29]
[ 505.799267][ T29] __schedule+0xb87/0x14e0
[ 505.803718][ T29] ? __kasan_check_write+0x14/0x20
[ 506.755949][ T29] ? __sched_text_start+0x8/0x8
[ 506.760868][ T29] ? kthread_data+0x50/0xc0
[ 506.765451][ T29] ? wq_worker_sleeping+0x64/0x280
[ 506.770588][ T29] schedule+0xbd/0x170
[ 506.774664][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 506.780364][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 506.786602][ T29] ? unwind_next_frame+0x3d5/0x700
[ 506.791734][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 506.797057][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 506.802622][ T29] ? __kasan_check_write+0x14/0x20
[ 507.755452][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 507.761267][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 507.767472][ T29] ? _raw_spin_lock+0x8e/0xe0
[ 507.772226][ T29] ? __cfi__raw_spin_lock+0x10/0x10
[ 507.777521][ T29] ? __kasan_check_read+0x11/0x20
[ 507.782566][ T29] synchronize_net+0x28/0x40
[ 507.787234][ T29] dev_deactivate_many+0x6b6/0xbc0
[ 507.792373][ T29] ? dev_deactivate_many+0x2c6/0xbc0
[ 507.797731][ T29] dev_deactivate+0x10c/0x1a0
[ 507.802444][ T29] ? __cfi_dev_deactivate+0x10/0x10
[ 508.765362][ T29] ? __cfi_veth_get_iflink+0x10/0x10
[ 508.770737][ T29] ? _raw_write_unlock+0x2b/0x60
[ 508.775744][ T29] ? rfc2863_policy+0x23e/0x2b0
[ 508.780706][ T29] linkwatch_do_dev+0x10d/0x160
[ 508.785591][ T29] __linkwatch_run_queue+0x408/0x660
[ 508.790990][ T29] ? linkwatch_run_queue+0x20/0x20
[ 508.796188][ T29] ? __schedule+0xb8f/0x14e0
[ 508.800826][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 509.755742][ T29] linkwatch_event+0x4c/0x60
[ 509.760473][ T29] process_one_work+0x71f/0xc40
[ 509.765422][ T29] worker_thread+0xa29/0x11f0
[ 509.770128][ T29] kthread+0x281/0x320
[ 509.774204][ T29] ? __cfi_worker_thread+0x10/0x10
[ 509.779371][ T29] ? __cfi_kthread+0x10/0x10
[ 509.783985][ T29] ret_from_fork+0x1f/0x30
[ 509.788487][ T29]
[ 509.791549][ T29] INFO: task kworker/0:2:321 blocked for more than 162 seconds.
[ 509.799240][ T29] Not tainted syzkaller #0
[ 509.804218][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 510.755589][ T29] task:kworker/0:2 state:D stack:25088 pid:321 ppid:2 flags:0x00004000
[ 510.764858][ T29] Workqueue: ipv6_addrconf addrconf_dad_work
[ 510.770942][ T29] Call Trace:
[ 510.774251][ T29]
[ 510.777303][ T29] __schedule+0xb87/0x14e0
[ 510.781794][ T29] ? __sched_text_start+0x8/0x8
[ 510.786708][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 510.791954][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 510.797240][ T29] schedule+0xbd/0x170
[ 510.801336][ T29] schedule_preempt_disabled+0x13/0x20
[ 511.756259][ T29] __mutex_lock+0x74a/0x16d0
[ 511.760992][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 511.768023][ T29] ? calc_wheel_index+0x130/0x8b0
[ 511.773501][ T29] ? timer_update_keys+0xb0/0xb0
[ 511.778560][ T29] ? debug_smp_processor_id+0x17/0x20
[ 511.783950][ T29] ? get_nohz_timer_target+0x74/0x540
[ 511.789404][ T29] ? __cfi_get_nohz_timer_target+0x10/0x10
[ 511.795228][ T29] ? __kasan_check_write+0x14/0x20
[ 511.800434][ T29] ? enqueue_timer+0x1b6/0x480
[ 511.805273][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 512.765396][ T29] __mutex_lock_slowpath+0xe/0x10
[ 512.770753][ T29] mutex_lock+0xf8/0x1a0
[ 512.775033][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 512.779947][ T29] rtnl_lock+0x15/0x20
[ 512.784091][ T29] addrconf_dad_work+0xc4/0x14b0
[ 512.789172][ T29] ? __kasan_check_write+0x14/0x20
[ 512.794334][ T29] ? mutex_unlock+0x89/0x220
[ 512.799009][ T29] ? __cfi_addrconf_dad_work+0x10/0x10
[ 512.804489][ T29] ? __kasan_check_write+0x14/0x20
[ 513.765700][ T29] ? _raw_spin_lock_irq+0x8f/0xe0
[ 513.771252][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 513.776920][ T29] ? pwq_dec_nr_in_flight+0x18c/0x3c0
[ 513.782380][ T29] process_one_work+0x71f/0xc40
[ 513.787310][ T29] worker_thread+0xa29/0x11f0
[ 513.792114][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 513.797652][ T29] ? __kthread_parkme+0x142/0x180
[ 513.802700][ T29] kthread+0x281/0x320
[ 514.755481][ T29] ? __cfi_worker_thread+0x10/0x10
[ 514.760665][ T29] ? __cfi_kthread+0x10/0x10
[ 514.765357][ T29] ret_from_fork+0x1f/0x30
[ 514.769810][ T29]
[ 514.772833][ T29] INFO: task kworker/1:1:322 blocked for more than 146 seconds.
[ 514.780563][ T29] Not tainted syzkaller #0
[ 514.785602][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 514.794344][ T29] task:kworker/1:1 state:D stack:24640 pid:322 ppid:2 flags:0x00004000
[ 514.803627][ T29] Workqueue: ipv6_addrconf addrconf_dad_work
[ 515.756743][ T29] Call Trace:
[ 515.760263][ T29]
[ 515.763213][ T29] __schedule+0xb87/0x14e0
[ 515.767728][ T29] ? __sched_text_start+0x8/0x8
[ 515.772627][ T29] ? __mutex_add_waiter+0xc7/0x270
[ 515.777908][ T29] ? __kasan_check_write+0x14/0x20
[ 515.783060][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 515.788391][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 515.793619][ T29] schedule+0xbd/0x170
[ 515.797769][ T29] schedule_preempt_disabled+0x13/0x20
[ 515.803289][ T29] __mutex_lock+0x74a/0x16d0
[ 516.755691][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 516.762612][ T29] ? sched_balance_newidle+0x894/0xde0
[ 516.768225][ T29] ? kvm_sched_clock_read+0x18/0x40
[ 516.773514][ T29] ? sched_clock+0x9/0x10
[ 516.778133][ T29] ? sched_clock_cpu+0x6e/0x250
[ 516.783016][ T29] ? __cfi_sched_clock_cpu+0x10/0x10
[ 516.788349][ T29] ? put_prev_entity+0x3b0/0x3b0
[ 516.793359][ T29] __mutex_lock_slowpath+0xe/0x10
[ 516.798500][ T29] mutex_lock+0xf8/0x1a0
[ 516.802749][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 517.757633][ T29] rtnl_lock+0x15/0x20
[ 517.761765][ T29] addrconf_dad_work+0xc4/0x14b0
[ 517.766995][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 517.771993][ T29] ? finish_task_switch+0x16b/0x7b0
[ 517.777316][ T29] ? __cfi_addrconf_dad_work+0x10/0x10
[ 517.782854][ T29] ? __schedule+0xb8f/0x14e0
[ 517.787539][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 517.793107][ T29] process_one_work+0x71f/0xc40
[ 517.798000][ T29] worker_thread+0xa29/0x11f0
[ 517.802718][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 518.755350][ T29] ? __kthread_parkme+0x142/0x180
[ 518.760454][ T29] kthread+0x281/0x320
[ 518.764567][ T29] ? __cfi_worker_thread+0x10/0x10
[ 518.769784][ T29] ? __cfi_kthread+0x10/0x10
[ 518.774400][ T29] ret_from_fork+0x1f/0x30
[ 518.778893][ T29]
[ 518.781945][ T29] INFO: task syz-executor:404 blocked for more than 150 seconds.
[ 518.789763][ T29] Not tainted syzkaller #0
[ 518.794708][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 518.803442][ T29] task:syz-executor state:D stack:28304 pid:404 ppid:1 flags:0x00004004
[ 519.756732][ T29] Call Trace:
[ 519.760072][ T29]
[ 519.763025][ T29] __schedule+0xb87/0x14e0
[ 519.767544][ T29] ? __sched_text_start+0x8/0x8
[ 519.772452][ T29] ? __mutex_add_waiter+0xc7/0x270
[ 519.777677][ T29] ? __kasan_check_write+0x14/0x20
[ 519.782852][ T29] ? trace_contention_begin+0xa0/0xa0
[ 519.788325][ T29] schedule+0xbd/0x170
[ 519.792452][ T29] schedule_preempt_disabled+0x13/0x20
[ 519.798016][ T29] __mutex_lock+0x74a/0x16d0
[ 519.802632][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 520.765551][ T29] ? selinux_capable+0x29c/0x380
[ 520.770539][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 520.775916][ T29] ? kvm_sched_clock_read+0x18/0x40
[ 520.781149][ T29] ? __reset_page_owner+0x190/0x190
[ 520.786418][ T29] ? cap_capable+0x1aa/0x230
[ 520.791033][ T29] __mutex_lock_slowpath+0xe/0x10
[ 520.796158][ T29] mutex_lock+0xf8/0x1a0
[ 520.800424][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 520.805273][ T29] ? ns_capable+0x8c/0xf0
[ 521.760170][ T29] ? netlink_net_capable+0x125/0x160
[ 521.765598][ T29] rtnetlink_rcv_msg+0x8c6/0xcf0
[ 521.770614][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 521.776181][ T29] ? kernel_text_address+0xa0/0xd0
[ 521.781325][ T29] ? __kernel_text_address+0xd/0x30
[ 521.786640][ T29] ? unwind_get_return_address+0x4d/0x90
[ 521.792289][ T29] ? memcpy+0x56/0x70
[ 521.796338][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 521.801737][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 522.756293][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 522.761639][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 522.767272][ T29] ? __alloc_skb+0xea/0x4b0
[ 522.771809][ T29] ? avc_has_perm+0x158/0x240
[ 522.776539][ T29] ? __alloc_skb+0x236/0x4b0
[ 522.781155][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 522.786197][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 522.791250][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 522.796739][ T29] netlink_rcv_skb+0x1f2/0x440
[ 522.801534][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 523.757159][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 523.762513][ T29] ? __netlink_lookup+0x387/0x3b0
[ 523.767785][ T29] rtnetlink_rcv+0x1c/0x20
[ 523.772255][ T29] netlink_unicast+0x8ab/0xa30
[ 523.777111][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 523.781973][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 523.787333][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 523.792820][ T29] __sys_sendto+0x464/0x5e0
[ 523.797417][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 523.802472][ T29] ? do_user_addr_fault+0x9ac/0x1050
[ 524.755561][ T29] __x64_sys_sendto+0xe5/0x100
[ 524.760413][ T29] x64_sys_call+0x83/0x9a0
[ 524.764935][ T29] do_syscall_64+0x4c/0xa0
[ 524.769496][ T29] ? clear_bhb_loop+0x30/0x80
[ 524.774258][ T29] ? clear_bhb_loop+0x30/0x80
[ 524.779010][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 524.785061][ T29] RIP: 0033:0x7fdaea991583
[ 524.789577][ T29] RSP: 002b:00007ffe01bd8d88 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 524.798130][ T29] RAX: ffffffffffffffda RBX: 00007fdaeb714620 RCX: 00007fdaea991583
[ 525.755840][ T29] RDX: 0000000000000028 RSI: 00007fdaeb714670 RDI: 0000000000000003
[ 525.763882][ T29] RBP: 0000000000000001 R08: 00007ffe01bd8da4 R09: 000000000000000c
[ 525.771961][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 525.780050][ T29] R13: 0000000000000000 R14: 00007fdaeb714670 R15: 0000000000000000
[ 525.788121][ T29]
[ 525.791235][ T29] NMI backtrace for cpu 0
[ 525.795577][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 525.802785][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 525.812856][ T29] Call Trace:
[ 525.816166][ T29]
[ 525.819119][ T29] __dump_stack+0x21/0x24
[ 525.823480][ T29] dump_stack_lvl+0xee/0x150
[ 525.828095][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 525.833156][ T29] dump_stack+0x15/0x24
[ 525.837341][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 525.842307][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 525.847882][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 525.853368][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 525.858336][ T29] ? memcpy+0x56/0x70
[ 525.862352][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 525.868357][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 525.874365][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 525.880370][ T29] watchdog+0xd44/0xe80
[ 525.884561][ T29] ? __cfi_watchdog+0x10/0x10
[ 525.889266][ T29] ? __kasan_check_read+0x11/0x20
[ 525.894314][ T29] ? __kthread_parkme+0x142/0x180
[ 525.899360][ T29] kthread+0x281/0x320
[ 525.903475][ T29] ? __cfi_watchdog+0x10/0x10
[ 525.908184][ T29] ? __cfi_kthread+0x10/0x10
[ 525.912822][ T29] ret_from_fork+0x1f/0x30
[ 525.917358][ T29]
[ 525.920474][ T29] Sending NMI from CPU 0 to CPUs 1:
[ 525.925714][ C1] NMI backtrace for cpu 1
[ 525.925723][ C1] CPU: 1 PID: 381 Comm: syz.2.17 Not tainted syzkaller #0
[ 525.925739][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 525.925748][ C1] RIP: 0010:check_preemption_disabled+0x5e/0x120
[ 525.925771][ C1] Code: 8b 0c 25 28 00 00 00 48 3b 4d d8 0f 85 cb 00 00 00 48 83 c4 10 5b 41 5c 41 5e 41 5f 5d c3 48 c7 45 d0 00 00 00 00 9c 8f 45 d0 45 d0 00 02 00 00 74 cb 65 4c 8b 25 d1 96 14 7b 41 f6 44 24 2f
[ 525.925784][ C1] RSP: 0018:ffffc900016969d0 EFLAGS: 00000046
[ 525.925800][ C1] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000000
[ 525.925810][ C1] RDX: 0000000000000000 RSI: ffffffff85916020 RDI: ffffffff85aa1a60
[ 525.925822][ C1] RBP: ffffc90001696a00 R08: dffffc0000000000 R09: ffffed1022754bed
[ 525.925834][ C1] R10: ffffed1022754bed R11: 1ffff11022754bec R12: ffff888111558c78
[ 525.925847][ C1] R13: ffff888111558c78 R14: 0000000000035708 R15: 0000000000000400
[ 525.925858][ C1] FS: 0000555557995500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 525.925872][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 525.925884][ C1] CR2: 00007f5b4a715000 CR3: 0000000113c73000 CR4: 00000000003506a0
[ 525.925898][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 525.925908][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 525.925917][ C1] Call Trace:
[ 525.925922][ C1]
[ 525.925928][ C1] __this_cpu_preempt_check+0x13/0x20
[ 525.925945][ C1] __find_get_block+0xa98/0xee0
[ 525.925964][ C1] ? __cfi___find_get_block+0x10/0x10
[ 525.925983][ C1] __getblk_gfp+0x2e/0x7d0
[ 525.926000][ C1] ? __cfi_wake_up_var+0x10/0x10
[ 525.926024][ C1] ? __kasan_check_write+0x14/0x20
[ 525.926041][ C1] __ext4_sb_bread_gfp+0x76/0x210
[ 525.926064][ C1] ext4_sb_bread+0x28/0x30
[ 525.926079][ C1] ext4_xattr_block_set+0xcd5/0x3270
[ 525.926108][ C1] ? ext4_xattr_block_find+0x310/0x310
[ 525.926131][ C1] ? ext4_xattr_block_find+0xf0/0x310
[ 525.926155][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 525.926180][ C1] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 525.926202][ C1] ? selinux_inode_init_security+0x67d/0x950
[ 525.926222][ C1] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 525.926241][ C1] ext4_initxattrs+0xa6/0x110
[ 525.926259][ C1] security_inode_init_security+0x28c/0x3a0
[ 525.926277][ C1] ? posix_acl_create+0x118/0x440
[ 525.926300][ C1] ? __cfi_ext4_initxattrs+0x10/0x10
[ 525.926317][ C1] ? __cfi_security_inode_init_security+0x10/0x10
[ 525.926337][ C1] ? dquot_alloc_inode+0x1d3/0x810
[ 525.926358][ C1] ? __cfi_inode_set_flags+0x10/0x10
[ 525.926380][ C1] ? __cfi_ext4_init_acl+0x10/0x10
[ 525.926397][ C1] ? _raw_spin_unlock+0x4c/0x70
[ 525.926417][ C1] ext4_init_security+0x34/0x40
[ 525.926434][ C1] __ext4_new_inode+0x2c29/0x3640
[ 525.926463][ C1] ? __cfi___ext4_new_inode+0x10/0x10
[ 525.926487][ C1] ? dquot_initialize+0x20/0x20
[ 525.926507][ C1] ? may_create+0x60c/0x810
[ 525.926528][ C1] ext4_create+0x22a/0x460
[ 525.926552][ C1] ? __cfi_ext4_create+0x10/0x10
[ 525.926574][ C1] ? selinux_inode_create+0x22/0x30
[ 525.926591][ C1] ? security_inode_create+0xd2/0x120
[ 525.926608][ C1] ? __cfi_ext4_create+0x10/0x10
[ 525.926630][ C1] path_openat+0x11e3/0x2f50
[ 525.926654][ C1] ? do_filp_open+0x3c0/0x3c0
[ 525.926674][ C1] do_filp_open+0x1c1/0x3c0
[ 525.926693][ C1] ? __cfi_do_filp_open+0x10/0x10
[ 525.926714][ C1] ? getname_kernel+0x59/0x2e0
[ 525.926729][ C1] ? memcpy+0x56/0x70
[ 525.926745][ C1] filp_open+0x173/0x1d0
[ 525.926766][ C1] ? __cfi_filp_open+0x10/0x10
[ 525.926787][ C1] ? getname_kernel+0x201/0x2e0
[ 525.926803][ C1] do_coredump+0x1b5d/0x21b0
[ 525.926829][ C1] ? __cfi_do_coredump+0x10/0x10
[ 525.926853][ C1] ? kmem_cache_free+0x12d/0x300
[ 525.926873][ C1] ? ____kasan_slab_free+0x13d/0x180
[ 525.926895][ C1] ? get_signal+0xa6c/0x1520
[ 525.926917][ C1] ? kmem_cache_free+0x12d/0x300
[ 525.926939][ C1] get_signal+0x11db/0x1520
[ 525.926965][ C1] arch_do_signal_or_restart+0xb0/0x1030
[ 525.926988][ C1] ? page_fault_oops+0x8d0/0x8d0
[ 525.927009][ C1] ? down_read_trylock+0x273/0x640
[ 525.927033][ C1] ? __cfi_arch_do_signal_or_restart+0x10/0x10
[ 525.927060][ C1] ? __bad_area_nosemaphore+0x303/0x620
[ 525.927085][ C1] ? do_user_addr_fault+0xd36/0x1050
[ 525.927107][ C1] exit_to_user_mode_loop+0x7a/0xb0
[ 525.927125][ C1] exit_to_user_mode_prepare+0x87/0xd0
[ 525.927142][ C1] irqentry_exit_to_user_mode+0x9/0x10
[ 525.927205][ C1] irqentry_exit+0x12/0x40
[ 525.927219][ C1] exc_page_fault+0x5e/0xb0
[ 525.927244][ C1] asm_exc_page_fault+0x27/0x30
[ 525.927266][ C1] RIP: 0033:0x7fd34478f751
[ 525.927279][ C1] Code: 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 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
[ 525.927292][ C1] RSP: 002b:0000000000000030 EFLAGS: 00010217
[ 525.927305][ C1] RAX: 0000000000000000 RBX: 00007fd3449e5fa0 RCX: 00007fd34478f749
[ 525.927316][ C1] RDX: 0000000000000000 RSI: 0000000000000030 RDI: 0000000000000600
[ 525.927325][ C1] RBP: 00007fd344813f91 R08: 0000000000000000 R09: 0000000000000000
[ 525.927336][ C1] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
[ 525.927345][ C1] R13: 00007fd3449e5fa0 R14: 00007fd3449e5fa0 R15: 0000000000000006
[ 525.927359][ C1]
[ 548.755578][ T29] INFO: task kworker/u4:1:10 blocked for more than 201 seconds.
[ 548.763309][ T29] Not tainted syzkaller #0
[ 548.768372][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 548.777123][ T29] task:kworker/u4:1 state:D stack:21472 pid:10 ppid:2 flags:0x00004000
[ 548.786385][ T29] Workqueue: events_unbound linkwatch_event
[ 548.792317][ T29] Call Trace:
[ 548.795675][ T29]
[ 548.798621][ T29] __schedule+0xb87/0x14e0
[ 548.803044][ T29] ? __kasan_check_write+0x14/0x20
[ 549.755757][ T29] ? __sched_text_start+0x8/0x8
[ 549.760679][ T29] ? kthread_data+0x50/0xc0
[ 549.765203][ T29] ? wq_worker_sleeping+0x64/0x280
[ 549.770427][ T29] schedule+0xbd/0x170
[ 549.774647][ T29] synchronize_rcu_expedited+0x70e/0x810
[ 549.780331][ T29] ? __cfi_synchronize_rcu_expedited+0x10/0x10
[ 549.786567][ T29] ? unwind_next_frame+0x3d5/0x700
[ 549.791709][ T29] ? __cfi_wait_rcu_exp_gp+0x10/0x10
[ 549.797038][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 549.802604][ T29] ? __kasan_check_write+0x14/0x20
[ 550.755972][ T29] ? __this_cpu_preempt_check+0x13/0x20
[ 550.761635][ T29] ? __cfi_autoremove_wake_function+0x10/0x10
[ 550.767827][ T29] ? _raw_spin_lock+0x8e/0xe0
[ 550.772564][ T29] ? __cfi__raw_spin_lock+0x10/0x10
[ 550.777832][ T29] ? __kasan_check_read+0x11/0x20
[ 550.782883][ T29] synchronize_net+0x28/0x40
[ 550.787559][ T29] dev_deactivate_many+0x6b6/0xbc0
[ 550.792699][ T29] ? dev_deactivate_many+0x2c6/0xbc0
[ 550.798045][ T29] dev_deactivate+0x10c/0x1a0
[ 550.802846][ T29] ? __cfi_dev_deactivate+0x10/0x10
[ 551.755615][ T29] ? __cfi_veth_get_iflink+0x10/0x10
[ 551.761017][ T29] ? _raw_write_unlock+0x2b/0x60
[ 551.766081][ T29] ? rfc2863_policy+0x23e/0x2b0
[ 551.771010][ T29] linkwatch_do_dev+0x10d/0x160
[ 551.775962][ T29] __linkwatch_run_queue+0x408/0x660
[ 551.781280][ T29] ? linkwatch_run_queue+0x20/0x20
[ 551.786601][ T29] ? __schedule+0xb8f/0x14e0
[ 551.791290][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 551.796927][ T29] linkwatch_event+0x4c/0x60
[ 551.801551][ T29] process_one_work+0x71f/0xc40
[ 552.755415][ T29] worker_thread+0xa29/0x11f0
[ 552.760168][ T29] kthread+0x281/0x320
[ 552.764259][ T29] ? __cfi_worker_thread+0x10/0x10
[ 552.769450][ T29] ? __cfi_kthread+0x10/0x10
[ 552.774112][ T29] ret_from_fork+0x1f/0x30
[ 552.778636][ T29]
[ 552.781694][ T29] INFO: task kworker/0:2:321 blocked for more than 205 seconds.
[ 552.789387][ T29] Not tainted syzkaller #0
[ 552.794339][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 552.803138][ T29] task:kworker/0:2 state:D stack:25088 pid:321 ppid:2 flags:0x00004000
[ 553.765616][ T29] Workqueue: ipv6_addrconf addrconf_dad_work
[ 553.771808][ T29] Call Trace:
[ 553.775124][ T29]
[ 553.778124][ T29] __schedule+0xb87/0x14e0
[ 553.782648][ T29] ? __sched_text_start+0x8/0x8
[ 553.787599][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 553.792819][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 553.798103][ T29] schedule+0xbd/0x170
[ 553.802279][ T29] schedule_preempt_disabled+0x13/0x20
[ 554.755346][ T29] __mutex_lock+0x74a/0x16d0
[ 554.760018][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 554.766850][ T29] ? calc_wheel_index+0x130/0x8b0
[ 554.771906][ T29] ? timer_update_keys+0xb0/0xb0
[ 554.776895][ T29] ? debug_smp_processor_id+0x17/0x20
[ 554.782308][ T29] ? get_nohz_timer_target+0x74/0x540
[ 554.787778][ T29] ? __cfi_get_nohz_timer_target+0x10/0x10
[ 554.793602][ T29] ? __kasan_check_write+0x14/0x20
[ 554.798776][ T29] ? enqueue_timer+0x1b6/0x480
[ 554.803569][ T29] ? _raw_spin_unlock_irqrestore+0x5a/0x80
[ 555.755662][ T29] __mutex_lock_slowpath+0xe/0x10
[ 555.760798][ T29] mutex_lock+0xf8/0x1a0
[ 555.765081][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 555.770067][ T29] rtnl_lock+0x15/0x20
[ 555.774180][ T29] addrconf_dad_work+0xc4/0x14b0
[ 555.779195][ T29] ? __kasan_check_write+0x14/0x20
[ 555.784420][ T29] ? mutex_unlock+0x89/0x220
[ 555.789094][ T29] ? __cfi_addrconf_dad_work+0x10/0x10
[ 555.794579][ T29] ? __kasan_check_write+0x14/0x20
[ 555.799762][ T29] ? _raw_spin_lock_irq+0x8f/0xe0
[ 555.804821][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 556.765347][ T29] ? pwq_dec_nr_in_flight+0x18c/0x3c0
[ 556.770792][ T29] process_one_work+0x71f/0xc40
[ 556.775722][ T29] worker_thread+0xa29/0x11f0
[ 556.780431][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 556.786002][ T29] ? __kthread_parkme+0x142/0x180
[ 556.791088][ T29] kthread+0x281/0x320
[ 556.795168][ T29] ? __cfi_worker_thread+0x10/0x10
[ 556.800388][ T29] ? __cfi_kthread+0x10/0x10
[ 556.805001][ T29] ret_from_fork+0x1f/0x30
[ 557.756787][ T29]
[ 557.759887][ T29] INFO: task kworker/1:1:322 blocked for more than 189 seconds.
[ 557.767653][ T29] Not tainted syzkaller #0
[ 557.772852][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 557.781638][ T29] task:kworker/1:1 state:D stack:24640 pid:322 ppid:2 flags:0x00004000
[ 557.791082][ T29] Workqueue: ipv6_addrconf addrconf_dad_work
[ 557.797338][ T29] Call Trace:
[ 557.800728][ T29]
[ 557.803681][ T29] __schedule+0xb87/0x14e0
[ 558.761332][ T29] ? __sched_text_start+0x8/0x8
[ 558.766317][ T29] ? __mutex_add_waiter+0xc7/0x270
[ 558.771559][ T29] ? __kasan_check_write+0x14/0x20
[ 558.776751][ T29] ? _raw_spin_unlock_irq+0x4d/0x70
[ 558.781969][ T29] ? wq_worker_sleeping+0x1d9/0x280
[ 558.787260][ T29] schedule+0xbd/0x170
[ 558.791359][ T29] schedule_preempt_disabled+0x13/0x20
[ 558.796881][ T29] __mutex_lock+0x74a/0x16d0
[ 558.801503][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 559.757390][ T29] ? sched_balance_newidle+0x894/0xde0
[ 559.763032][ T29] ? kvm_sched_clock_read+0x18/0x40
[ 559.768327][ T29] ? sched_clock+0x9/0x10
[ 559.772678][ T29] ? sched_clock_cpu+0x6e/0x250
[ 559.777664][ T29] ? __cfi_sched_clock_cpu+0x10/0x10
[ 559.783004][ T29] ? put_prev_entity+0x3b0/0x3b0
[ 559.788003][ T29] __mutex_lock_slowpath+0xe/0x10
[ 559.793103][ T29] mutex_lock+0xf8/0x1a0
[ 559.797391][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 559.802268][ T29] rtnl_lock+0x15/0x20
[ 560.755340][ T29] addrconf_dad_work+0xc4/0x14b0
[ 560.760349][ T29] ? _raw_spin_unlock+0x4c/0x70
[ 560.765235][ T29] ? finish_task_switch+0x16b/0x7b0
[ 560.770514][ T29] ? __cfi_addrconf_dad_work+0x10/0x10
[ 560.776108][ T29] ? __schedule+0xb8f/0x14e0
[ 560.780786][ T29] ? __cfi__raw_spin_lock_irq+0x10/0x10
[ 560.786430][ T29] process_one_work+0x71f/0xc40
[ 560.791310][ T29] worker_thread+0xa29/0x11f0
[ 560.796061][ T29] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 560.801552][ T29] ? __kthread_parkme+0x142/0x180
[ 561.755780][ T29] kthread+0x281/0x320
[ 561.760007][ T29] ? __cfi_worker_thread+0x10/0x10
[ 561.765142][ T29] ? __cfi_kthread+0x10/0x10
[ 561.769821][ T29] ret_from_fork+0x1f/0x30
[ 561.774297][ T29]
[ 561.777430][ T29] INFO: task syz-executor:404 blocked for more than 193 seconds.
[ 561.785239][ T29] Not tainted syzkaller #0
[ 561.790258][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 561.798999][ T29] task:syz-executor state:D stack:28304 pid:404 ppid:1 flags:0x00004004
[ 562.755574][ T29] Call Trace:
[ 562.758910][ T29]
[ 562.761871][ T29] __schedule+0xb87/0x14e0
[ 562.766388][ T29] ? __sched_text_start+0x8/0x8
[ 562.771274][ T29] ? __mutex_add_waiter+0xc7/0x270
[ 562.776502][ T29] ? __kasan_check_write+0x14/0x20
[ 562.781678][ T29] ? trace_contention_begin+0xa0/0xa0
[ 562.787124][ T29] schedule+0xbd/0x170
[ 562.791218][ T29] schedule_preempt_disabled+0x13/0x20
[ 562.796761][ T29] __mutex_lock+0x74a/0x16d0
[ 562.801380][ T29] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 563.755477][ T29] ? selinux_capable+0x29c/0x380
[ 563.760629][ T29] ? __cfi_selinux_capable+0x10/0x10
[ 563.765988][ T29] ? kvm_sched_clock_read+0x18/0x40
[ 563.771272][ T29] ? __reset_page_owner+0x190/0x190
[ 563.776518][ T29] ? cap_capable+0x1aa/0x230
[ 563.781145][ T29] __mutex_lock_slowpath+0xe/0x10
[ 563.786266][ T29] mutex_lock+0xf8/0x1a0
[ 563.790542][ T29] ? __cfi_mutex_lock+0x10/0x10
[ 563.795475][ T29] ? ns_capable+0x8c/0xf0
[ 563.799835][ T29] ? netlink_net_capable+0x125/0x160
[ 563.805146][ T29] rtnetlink_rcv_msg+0x8c6/0xcf0
[ 564.765512][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 564.771039][ T29] ? kernel_text_address+0xa0/0xd0
[ 564.776267][ T29] ? __kernel_text_address+0xd/0x30
[ 564.781491][ T29] ? unwind_get_return_address+0x4d/0x90
[ 564.787219][ T29] ? memcpy+0x56/0x70
[ 564.791224][ T29] ? avc_has_perm_noaudit+0x2f4/0x460
[ 564.796674][ T29] ? __cfi_avc_has_perm_noaudit+0x10/0x10
[ 564.802419][ T29] ? slab_post_alloc_hook+0x4f/0x2d0
[ 565.755998][ T29] ? kmem_cache_alloc_node+0x181/0x340
[ 565.761746][ T29] ? __alloc_skb+0xea/0x4b0
[ 565.766330][ T29] ? avc_has_perm+0x158/0x240
[ 565.771030][ T29] ? __alloc_skb+0x236/0x4b0
[ 565.775683][ T29] ? netlink_sendmsg+0x626/0xbc0
[ 565.780716][ T29] ? __cfi_avc_has_perm+0x10/0x10
[ 565.785956][ T29] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 565.791394][ T29] netlink_rcv_skb+0x1f2/0x440
[ 565.796248][ T29] ? __cfi_rtnetlink_rcv_msg+0x10/0x10
[ 565.801739][ T29] ? __cfi_netlink_rcv_skb+0x10/0x10
[ 566.765340][ T29] ? __netlink_lookup+0x387/0x3b0
[ 566.770452][ T29] rtnetlink_rcv+0x1c/0x20
[ 566.774900][ T29] netlink_unicast+0x8ab/0xa30
[ 566.779816][ T29] netlink_sendmsg+0x8aa/0xbc0
[ 566.784612][ T29] ? __cfi_netlink_sendmsg+0x10/0x10
[ 566.789991][ T29] ? security_socket_sendmsg+0x93/0xb0
[ 566.795547][ T29] __sys_sendto+0x464/0x5e0
[ 566.800091][ T29] ? __cfi___sys_sendto+0x10/0x10
[ 566.805118][ T29] ? do_user_addr_fault+0x9ac/0x1050
[ 567.755687][ T29] __x64_sys_sendto+0xe5/0x100
[ 567.760530][ T29] x64_sys_call+0x83/0x9a0
[ 567.764984][ T29] do_syscall_64+0x4c/0xa0
[ 567.769512][ T29] ? clear_bhb_loop+0x30/0x80
[ 567.774316][ T29] ? clear_bhb_loop+0x30/0x80
[ 567.779161][ T29] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 567.785096][ T29] RIP: 0033:0x7fdaea991583
[ 567.789583][ T29] RSP: 002b:00007ffe01bd8d88 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 567.798266][ T29] RAX: ffffffffffffffda RBX: 00007fdaeb714620 RCX: 00007fdaea991583
[ 568.755463][ T29] RDX: 0000000000000028 RSI: 00007fdaeb714670 RDI: 0000000000000003
[ 568.763511][ T29] RBP: 0000000000000001 R08: 00007ffe01bd8da4 R09: 000000000000000c
[ 568.771542][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 568.779569][ T29] R13: 0000000000000000 R14: 00007fdaeb714670 R15: 0000000000000000
[ 568.787611][ T29]
[ 568.790742][ T29] NMI backtrace for cpu 1
[ 568.795070][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
[ 568.802261][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 568.812402][ T29] Call Trace:
[ 568.815688][ T29]
[ 568.818615][ T29] __dump_stack+0x21/0x24
[ 568.822947][ T29] dump_stack_lvl+0xee/0x150
[ 568.827537][ T29] ? __cfi_dump_stack_lvl+0x8/0x8
[ 568.832566][ T29] dump_stack+0x15/0x24
[ 568.836727][ T29] nmi_cpu_backtrace+0x2b4/0x2c0
[ 568.841675][ T29] ? rcu_read_unlock_special+0xab/0x480
[ 568.847234][ T29] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 568.852699][ T29] ? __rcu_read_unlock+0xa0/0xa0
[ 568.857642][ T29] ? memcpy+0x56/0x70
[ 568.861619][ T29] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 568.867596][ T29] nmi_trigger_cpumask_backtrace+0x16b/0x3a0
[ 568.873580][ T29] arch_trigger_cpumask_backtrace+0x10/0x20
[ 568.879468][ T29] watchdog+0xd44/0xe80
[ 568.883640][ T29] ? __cfi_watchdog+0x10/0x10
[ 568.888335][ T29] ? __kasan_check_read+0x11/0x20
[ 568.893386][ T29] ? __kthread_parkme+0x142/0x180
[ 568.898418][ T29] kthread+0x281/0x320
[ 568.902495][ T29] ? __cfi_watchdog+0x10/0x10
[ 568.907224][ T29] ? __cfi_kthread+0x10/0x10
[ 568.911829][ T29] ret_from_fork+0x1f/0x30
[ 568.916253][ T29]
[ 568.919403][ T29] Sending NMI from CPU 1 to CPUs 0:
[ 568.924645][ C0] NMI backtrace for cpu 0
[ 568.924657][ C0] CPU: 0 PID: 398 Comm: syz.3.19 Not tainted syzkaller #0
[ 568.924673][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 568.924682][ C0] RIP: 0010:ext4_mark_iloc_dirty+0x16d3/0x1930
[ 568.924712][ C0] Code: e8 a2 f3 86 ff 48 89 df e8 ea 03 e3 ff eb 05 e8 93 f3 86 ff 48 8b 85 28 ff ff ff 42 80 3c 28 00 74 08 4c 89 e7 e8 ad 74 cb ff <49> 8b 1c 24 48 8d 7b 60 be 04 00 00 00 e8 3b 77 cb ff f0 ff 4b 60
[ 568.924725][ C0] RSP: 0018:ffffc90000ac6a10 EFLAGS: 00000246
[ 568.924740][ C0] RAX: 1ffff92000158d6c RBX: ffff88811155bd20 RCX: ffffffff81cc3aad
[ 568.924753][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88811155bd80
[ 568.924764][ C0] RBP: ffffc90000ac6b18 R08: dffffc0000000000 R09: ffffed10222ab7b1
[ 568.924776][ C0] R10: ffffed10222ab7b1 R11: 1ffff110222ab7b0 R12: ffffc90000ac6b60
[ 568.924788][ C0] R13: dffffc0000000000 R14: 0000000000000002 R15: 0000000000000000
[ 568.924799][ C0] FS: 0000555570c26500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 568.924814][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 568.924825][ C0] CR2: 00007f0982115000 CR3: 00000001140de000 CR4: 00000000003506b0
[ 568.924840][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 568.924849][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 568.924859][ C0] Call Trace:
[ 568.924864][ C0]
[ 568.924871][ C0] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 568.924894][ C0] __ext4_mark_inode_dirty+0x423/0x600
[ 568.924915][ C0] ext4_dirty_inode+0xbd/0x100
[ 568.924935][ C0] ? __cfi_ext4_dirty_inode+0x10/0x10
[ 568.924957][ C0] __mark_inode_dirty+0x203/0x9d0
[ 568.924977][ C0] ext4_xattr_block_set+0x167d/0x3270
[ 568.925006][ C0] ? ext4_xattr_block_find+0x310/0x310
[ 568.925029][ C0] ? ext4_xattr_block_find+0xf0/0x310
[ 568.925051][ C0] ext4_xattr_set_handle+0xbd5/0x12b0
[ 568.925076][ C0] ? __cfi_ext4_xattr_set_handle+0x10/0x10
[ 568.925098][ C0] ? selinux_inode_init_security+0x67d/0x950
[ 568.925118][ C0] ? __cfi_selinux_inode_init_security+0x10/0x10
[ 568.925137][ C0] ext4_initxattrs+0xa6/0x110
[ 568.925155][ C0] security_inode_init_security+0x28c/0x3a0
[ 568.925174][ C0] ? posix_acl_create+0x118/0x440
[ 568.925196][ C0] ? __cfi_ext4_initxattrs+0x10/0x10
[ 568.925214][ C0] ? __cfi_security_inode_init_security+0x10/0x10
[ 568.925233][ C0] ? dquot_alloc_inode+0x1d3/0x810
[ 568.925255][ C0] ? __cfi_inode_set_flags+0x10/0x10
[ 568.925282][ C0] ? __cfi_ext4_init_acl+0x10/0x10
[ 568.925299][ C0] ? _raw_spin_unlock+0x4c/0x70
[ 568.925319][ C0] ext4_init_security+0x34/0x40
[ 568.925337][ C0] __ext4_new_inode+0x2c29/0x3640
[ 568.925365][ C0] ? __cfi___ext4_new_inode+0x10/0x10
[ 568.925389][ C0] ? dquot_initialize+0x20/0x20
[ 568.925415][ C0] ? may_create+0x60c/0x810
[ 568.925435][ C0] ext4_create+0x22a/0x460
[ 568.925459][ C0] ? __cfi_ext4_create+0x10/0x10
[ 568.925481][ C0] ? selinux_inode_create+0x22/0x30
[ 568.925497][ C0] ? security_inode_create+0xd2/0x120
[ 568.925515][ C0] ? __cfi_ext4_create+0x10/0x10
[ 568.925536][ C0] path_openat+0x11e3/0x2f50
[ 568.925561][ C0] ? do_filp_open+0x3c0/0x3c0
[ 568.925581][ C0] do_filp_open+0x1c1/0x3c0
[ 568.925599][ C0] ? __cfi_do_filp_open+0x10/0x10
[ 568.925621][ C0] ? getname_kernel+0x59/0x2e0
[ 568.925636][ C0] ? memcpy+0x56/0x70
[ 568.925652][ C0] filp_open+0x173/0x1d0
[ 568.925673][ C0] ? __cfi_filp_open+0x10/0x10
[ 568.925694][ C0] ? getname_kernel+0x201/0x2e0
[ 568.925709][ C0] do_coredump+0x1b5d/0x21b0
[ 568.925735][ C0] ? __cfi_do_coredump+0x10/0x10
[ 568.925758][ C0] ? kmem_cache_free+0x12d/0x300
[ 568.925780][ C0] ? ____kasan_slab_free+0x13d/0x180
[ 568.925801][ C0] ? get_signal+0xa6c/0x1520
[ 568.925824][ C0] ? kmem_cache_free+0x12d/0x300
[ 568.925846][ C0] get_signal+0x11db/0x1520
[ 568.925872][ C0] arch_do_signal_or_restart+0xb0/0x1030
[ 568.925895][ C0] ? page_fault_oops+0x8d0/0x8d0
[ 568.925916][ C0] ? down_read_trylock+0x273/0x640
[ 568.925941][ C0] ? __cfi_arch_do_signal_or_restart+0x10/0x10
[ 568.925961][ C0] ? __bad_area_nosemaphore+0x303/0x620
[ 568.925985][ C0] ? do_user_addr_fault+0xd36/0x1050
[ 568.926007][ C0] exit_to_user_mode_loop+0x7a/0xb0
[ 568.926025][ C0] exit_to_user_mode_prepare+0x87/0xd0
[ 568.926042][ C0] irqentry_exit_to_user_mode+0x9/0x10
[ 568.926057][ C0] irqentry_exit+0x12/0x40
[ 568.926070][ C0] exc_page_fault+0x5e/0xb0
[ 568.926094][ C0] asm_exc_page_fault+0x27/0x30
[ 568.926116][ C0] RIP: 0033:0x7fe4e538f751
[ 568.926129][ C0] Code: 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 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
[ 568.926142][ C0] RSP: 002b:0000000000000030 EFLAGS: 00010217
[ 568.926155][ C0] RAX: 0000000000000000 RBX: 00007fe4e55e5fa0 RCX: 00007fe4e538f749
[ 568.926167][ C0] RDX: 0000000000000000 RSI: 0000000000000030 RDI: 0000000000000600
[ 568.926176][ C0] RBP: 00007fe4e5413f91 R08: 0000000000000000 R09: 0000000000000000
[ 568.926186][ C0] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
[ 568.926196][ C0] R13: 00007fe4e55e5fa0 R14: 00007fe4e55e5fa0 R15: 0000000000000006
[ 568.926210][ C0]