Warning: Permanently added '10.128.1.163' (ED25519) to the list of known hosts.
2025/11/30 08:11:46 parsed 1 programs
[ 281.729909][ T30] audit: type=1400 audit(1764490306.265:64): avc: denied { node_bind } for pid=281 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1
[ 281.750615][ T30] audit: type=1400 audit(1764490306.265:65): avc: denied { module_request } for pid=281 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
[ 282.437951][ T30] audit: type=1400 audit(1764490306.975:66): avc: denied { mounton } for pid=290 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
[ 282.438930][ T290] cgroup: Unknown subsys name 'net'
[ 282.460618][ T30] audit: type=1400 audit(1764490306.975:67): avc: denied { mount } for pid=290 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
[ 282.487897][ T30] audit: type=1400 audit(1764490307.005:68): avc: denied { unmount } for pid=290 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 282.488091][ T290] cgroup: Unknown subsys name 'devices'
[ 282.634035][ T290] cgroup: Unknown subsys name 'hugetlb'
[ 282.639666][ T290] cgroup: Unknown subsys name 'rlimit'
[ 282.811470][ T30] audit: type=1400 audit(1764490307.345:69): avc: denied { setattr } for pid=290 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1
[ 282.834680][ T30] audit: type=1400 audit(1764490307.345:70): avc: denied { create } for pid=290 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
[ 282.843259][ T292] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
[ 282.855296][ T30] audit: type=1400 audit(1764490307.345:71): avc: denied { write } for pid=290 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 282.883942][ T30] audit: type=1400 audit(1764490307.355:72): avc: denied { read } for pid=290 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 282.898343][ T290] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 282.904473][ T30] audit: type=1400 audit(1764490307.355:73): avc: denied { mounton } for pid=290 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
[ 283.381382][ T294] request_module fs-gadgetfs succeeded, but still no fs?
[ 283.829315][ T333] bridge0: port 1(bridge_slave_0) entered blocking state
[ 283.836728][ T333] bridge0: port 1(bridge_slave_0) entered disabled state
[ 283.844476][ T333] device bridge_slave_0 entered promiscuous mode
[ 283.851470][ T329] syz-executor (329) used greatest stack depth: 21056 bytes left
[ 283.851524][ T333] bridge0: port 2(bridge_slave_1) entered blocking state
[ 283.866630][ T333] bridge0: port 2(bridge_slave_1) entered disabled state
[ 283.874023][ T333] device bridge_slave_1 entered promiscuous mode
[ 283.912304][ T333] bridge0: port 2(bridge_slave_1) entered blocking state
[ 283.919437][ T333] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 283.926960][ T333] bridge0: port 1(bridge_slave_0) entered blocking state
[ 283.934026][ T333] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 283.953409][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 283.960963][ T45] bridge0: port 1(bridge_slave_0) entered disabled state
[ 283.968506][ T45] bridge0: port 2(bridge_slave_1) entered disabled state
[ 283.977502][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 283.985852][ T45] bridge0: port 1(bridge_slave_0) entered blocking state
[ 283.992902][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 284.001830][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 284.010191][ T45] bridge0: port 2(bridge_slave_1) entered blocking state
[ 284.017239][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 284.028755][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 284.038040][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 284.050560][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 284.061251][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 284.069706][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 284.077594][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 284.086018][ T333] device veth0_vlan entered promiscuous mode
[ 284.095318][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 284.104494][ T333] device veth1_macvtap entered promiscuous mode
[ 284.113300][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 284.123421][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 284.151303][ T333] syz-executor (333) used greatest stack depth: 20928 bytes left
2025/11/30 08:11:49 executed programs: 0
[ 284.507521][ T360] bridge0: port 1(bridge_slave_0) entered blocking state
[ 284.514604][ T360] bridge0: port 1(bridge_slave_0) entered disabled state
[ 284.521923][ T360] device bridge_slave_0 entered promiscuous mode
[ 284.529425][ T360] bridge0: port 2(bridge_slave_1) entered blocking state
[ 284.536600][ T360] bridge0: port 2(bridge_slave_1) entered disabled state
[ 284.544052][ T360] device bridge_slave_1 entered promiscuous mode
[ 284.592713][ T360] bridge0: port 2(bridge_slave_1) entered blocking state
[ 284.599993][ T360] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 284.607391][ T360] bridge0: port 1(bridge_slave_0) entered blocking state
[ 284.614450][ T360] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 284.638647][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 284.646451][ T45] bridge0: port 1(bridge_slave_0) entered disabled state
[ 284.653971][ T45] bridge0: port 2(bridge_slave_1) entered disabled state
[ 284.662904][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 284.671329][ T45] bridge0: port 1(bridge_slave_0) entered blocking state
[ 284.678422][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 284.687889][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 284.696313][ T45] bridge0: port 2(bridge_slave_1) entered blocking state
[ 284.703577][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 284.719643][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 284.727696][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 284.746628][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 284.758935][ T360] device veth0_vlan entered promiscuous mode
[ 284.772531][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 284.780800][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 284.788736][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 284.796373][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 284.805551][ T360] device veth1_macvtap entered promiscuous mode
[ 284.816192][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 284.824582][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 284.833969][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 284.842496][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 284.869717][ T371] loop2: detected capacity change from 0 to 1024
[ 284.912703][ T371] =======================================================
[ 284.912703][ T371] WARNING: The mand mount option has been deprecated and
[ 284.912703][ T371] and is ignored by this kernel. Remove the mand
[ 284.912703][ T371] option from the mount to silence this warning.
[ 284.912703][ T371] =======================================================
[ 284.972882][ T371] EXT4-fs (loop2): Ignoring removed oldalloc option
[ 284.979523][ T371] EXT4-fs (loop2): Ignoring removed orlov option
[ 284.993676][ T371] EXT4-fs (loop2): mounted filesystem without journal. Opts: debug_want_extra_isize=0x0000000000000080,grpjquota=,oldalloc,errors=remount-ro,orlov,usrquota,stripe=0x0000000000000622,. Quota mode: writeback.
[ 285.728019][ T10] device bridge_slave_1 left promiscuous mode
[ 285.734388][ T10] bridge0: port 2(bridge_slave_1) entered disabled state
[ 285.742722][ T10] device bridge_slave_0 left promiscuous mode
[ 285.748866][ T10] bridge0: port 1(bridge_slave_0) entered disabled state
[ 285.757368][ T10] device veth1_macvtap left promiscuous mode
[ 285.763431][ T10] device veth0_vlan left promiscuous mode
[ 286.221940][ C0] sched: RT throttling activated
[ 299.940050][ T377] bridge0: port 1(bridge_slave_0) entered blocking state
[ 299.947410][ T377] bridge0: port 1(bridge_slave_0) entered disabled state
[ 299.955163][ T377] device bridge_slave_0 entered promiscuous mode
[ 299.962459][ T377] bridge0: port 2(bridge_slave_1) entered blocking state
[ 299.969494][ T377] bridge0: port 2(bridge_slave_1) entered disabled state
[ 299.977375][ T377] device bridge_slave_1 entered promiscuous mode
[ 300.044181][ T377] bridge0: port 2(bridge_slave_1) entered blocking state
[ 300.051264][ T377] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 300.058582][ T377] bridge0: port 1(bridge_slave_0) entered blocking state
[ 300.065629][ T377] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 300.089596][ T10] bridge0: port 1(bridge_slave_0) entered disabled state
[ 300.097496][ T10] bridge0: port 2(bridge_slave_1) entered disabled state
[ 300.105964][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 300.113760][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 300.133500][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 300.141758][ T10] bridge0: port 1(bridge_slave_0) entered blocking state
[ 300.148827][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 300.156533][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 300.166831][ T10] bridge0: port 2(bridge_slave_1) entered blocking state
[ 300.174283][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 300.182575][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 300.190650][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 300.207373][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 300.217800][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 300.226028][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 300.233487][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
2025/11/30 08:12:04 executed programs: 3
[ 300.241482][ T377] device veth0_vlan entered promiscuous mode
[ 300.251524][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 300.260754][ T377] device veth1_macvtap entered promiscuous mode
[ 300.299639][ T387] loop3: detected capacity change from 0 to 1024
[ 300.314478][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 300.323100][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 300.337113][ T387] EXT4-fs (loop3): Ignoring removed oldalloc option
[ 300.343761][ T387] EXT4-fs (loop3): Ignoring removed orlov option
[ 300.380260][ T387] EXT4-fs (loop3): mounted filesystem without journal. Opts: debug_want_extra_isize=0x0000000000000080,grpjquota=,oldalloc,errors=remount-ro,orlov,usrquota,stripe=0x0000000000000622,. Quota mode: writeback.
[ 400.411888][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 400.418883][ C0] (detected by 0, t=10002 jiffies, g=1729, q=914)
[ 400.425391][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294977257-4294967254), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 400.438808][ C0] rcu: rcu_preempt kthread starved for 10004 jiffies! g1729 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 400.449919][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 400.459891][ C0] rcu: RCU grace-period kthread stack dump:
[ 400.465777][ C0] task:rcu_preempt state:R running task stack:28752 pid: 14 ppid: 2 flags:0x00004000
[ 400.476743][ C0] Call Trace:
[ 400.480027][ C0]
[ 400.482965][ C0] __schedule+0xb6e/0x14c0
[ 400.487399][ C0] ? release_firmware_map_entry+0x190/0x190
[ 400.493351][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 400.499170][ C0] ? __mod_timer+0x7ae/0xb30
[ 400.503768][ C0] schedule+0x11e/0x1e0
[ 400.507928][ C0] schedule_timeout+0x12c/0x2e0
[ 400.512790][ C0] ? console_conditional_schedule+0x30/0x30
[ 400.518690][ C0] ? _raw_spin_lock_irqsave+0xb0/0x110
[ 400.524155][ C0] ? update_process_times+0x200/0x200
[ 400.529541][ C0] ? prepare_to_swait_event+0x308/0x320
[ 400.535193][ C0] rcu_gp_fqs_loop+0x293/0xf60
[ 400.539972][ C0] ? debug_smp_processor_id+0x17/0x20
[ 400.545453][ C0] ? __note_gp_changes+0x4e2/0x9e0
[ 400.550572][ C0] ? rcu_gp_init+0xc00/0xc00
[ 400.555268][ C0] ? _raw_spin_unlock_irq+0x4e/0x70
[ 400.560488][ C0] ? rcu_gp_init+0x9a7/0xc00
[ 400.565087][ C0] rcu_gp_kthread+0x98/0x330
[ 400.569696][ C0] ? wake_nocb_gp+0x1d0/0x1d0
[ 400.574384][ C0] ? __kasan_check_read+0x11/0x20
[ 400.579431][ C0] ? __kthread_parkme+0xac/0x200
[ 400.584381][ C0] ? preempt_count_add+0x90/0x1b0
[ 400.589415][ C0] kthread+0x411/0x500
[ 400.593641][ C0] ? wake_nocb_gp+0x1d0/0x1d0
[ 400.598354][ C0] ? kthread_blkcg+0xd0/0xd0
[ 400.602967][ C0] ret_from_fork+0x1f/0x30
[ 400.607403][ C0]
[ 400.610430][ C0] rcu: Stack dump where RCU GP kthread last ran:
[ 400.616754][ C0] Sending NMI from CPU 0 to CPUs 1:
[ 400.621973][ C1] NMI backtrace for cpu 1
[ 400.621982][ C1] CPU: 1 PID: 387 Comm: syz.3.18 Not tainted syzkaller #0
[ 400.621997][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 400.622004][ C1] RIP: 0010:ext4_mark_iloc_dirty+0x226e/0x3f50
[ 400.622025][ C1] Code: 85 cf 06 00 00 49 63 c7 49 29 c7 49 c1 ef 20 41 83 e7 03 43 8d 04 b7 89 84 32 84 00 00 00 eb 54 e8 77 0d 90 ff e9 7f 05 00 00 6d 0d 90 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 7d b8 eb 23 e8
[ 400.622037][ C1] RSP: 0018:ffffc90002d76fb0 EFLAGS: 00000287
[ 400.622051][ C1] RAX: ffffffff81d8afaf RBX: ffff88812ec6ef58 RCX: ffff8881125d2780
[ 400.622062][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000800
[ 400.622072][ C1] RBP: ffffc90002d770b8 R08: dffffc0000000000 R09: ffffed1025d8de39
[ 400.622082][ C1] R10: ffffed1025d8de39 R11: 1ffff11025d8de38 R12: ffffc90002d77100
[ 400.622093][ C1] R13: ffff88812ec6b688 R14: 1ffff11025d8d6d1 R15: 0000000000000000
[ 400.622103][ C1] FS: 000055558eb00500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 400.622117][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 400.622128][ C1] CR2: 00007f9d208ac000 CR3: 000000012d424000 CR4: 00000000003506a0
[ 400.622143][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 400.622152][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 400.622161][ C1] Call Trace:
[ 400.622167][ C1]
[ 400.622172][ C1] ? _raw_spin_lock+0x8e/0xe0
[ 400.622191][ C1] __ext4_mark_inode_dirty+0x428/0x610
[ 400.622205][ C1] ? ext4_journal_check_start+0x172/0x240
[ 400.622223][ C1] ext4_dirty_inode+0xbd/0x100
[ 400.622237][ C1] ? __ext4_expand_extra_isize+0x3e0/0x3e0
[ 400.622252][ C1] __mark_inode_dirty+0x1f5/0x9c0
[ 400.622269][ C1] ext4_xattr_block_set+0x13db/0x2cb0
[ 400.622288][ C1] ? ext4_xattr_block_find+0x4f0/0x4f0
[ 400.622303][ C1] ? ext4_xattr_block_find+0xf1/0x4f0
[ 400.622320][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 400.622337][ C1] ? ext4_xattr_set_entry+0x37d0/0x37d0
[ 400.622353][ C1] ? selinux_inode_free_security+0x210/0x210
[ 400.622371][ C1] ext4_initxattrs+0xa6/0x110
[ 400.622384][ C1] security_inode_init_security+0x254/0x370
[ 400.622400][ C1] ? posix_acl_create+0x118/0x440
[ 400.622414][ C1] ? ext4_init_security+0x40/0x40
[ 400.622428][ C1] ? security_dentry_create_files_as+0xc0/0xc0
[ 400.622443][ C1] ? dquot_alloc_inode+0x1c2/0x7d0
[ 400.622459][ C1] ? __ext4_set_acl+0x600/0x600
[ 400.622472][ C1] ? prandom_u32+0x24d/0x290
[ 400.622485][ C1] ext4_init_security+0x34/0x40
[ 400.622499][ C1] __ext4_new_inode+0x2c41/0x3690
[ 400.622514][ C1] ? ext4_has_group_desc_csum+0x1f0/0x1f0
[ 400.622528][ C1] ? dquot_initialize+0x20/0x20
[ 400.622542][ C1] ? ext4_lookup+0x427/0x840
[ 400.622563][ C1] ? ext4_add_entry+0xf40/0xf40
[ 400.622576][ C1] ? may_create+0x377/0x460
[ 400.622589][ C1] ext4_create+0x22a/0x460
[ 400.622604][ C1] ? ext4_lookup+0x840/0x840
[ 400.622616][ C1] ? selinux_inode_create+0x22/0x30
[ 400.622631][ C1] ? security_inode_create+0xbd/0x110
[ 400.622646][ C1] ? ext4_lookup+0x840/0x840
[ 400.622658][ C1] path_openat+0x11ae/0x2f10
[ 400.622677][ C1] ? do_filp_open+0x3e0/0x3e0
[ 400.622691][ C1] ? expand_files+0xde/0x8e0
[ 400.622704][ C1] do_filp_open+0x1b3/0x3e0
[ 400.622718][ C1] ? vfs_tmpfile+0x2d0/0x2d0
[ 400.622735][ C1] do_sys_openat2+0x14c/0x7b0
[ 400.622752][ C1] ? __se_sys_futex+0x139/0x310
[ 400.622767][ C1] ? do_sys_open+0xe0/0xe0
[ 400.622782][ C1] ? __x64_sys_futex+0x100/0x100
[ 400.622798][ C1] __x64_sys_creat+0x8e/0xb0
[ 400.622813][ C1] x64_sys_call+0x94a/0x9a0
[ 400.622826][ C1] do_syscall_64+0x4c/0xa0
[ 400.622843][ C1] ? clear_bhb_loop+0x50/0xa0
[ 400.622855][ C1] ? clear_bhb_loop+0x50/0xa0
[ 400.622867][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 400.622882][ C1] RIP: 0033:0x7fefa8f30749
[ 400.622895][ 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
[ 400.622906][ C1] RSP: 002b:00007ffde2625848 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 400.622921][ C1] RAX: ffffffffffffffda RBX: 00007fefa9186fa0 RCX: 00007fefa8f30749
[ 400.622931][ C1] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 400.622940][ C1] RBP: 00007fefa8fb4f91 R08: 0000000000000000 R09: 0000000000000000
[ 400.622949][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 400.622958][ C1] R13: 00007fefa9186fa0 R14: 00007fefa9186fa0 R15: 0000000000000002
[ 400.622970][ C1]
[ 450.211897][ T31] INFO: task kworker/u4:0:8 blocked for more than 126 seconds.
[ 450.219492][ T31] Not tainted syzkaller #0
[ 450.225407][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 450.234234][ T31] task:kworker/u4:0 state:D stack:21248 pid: 8 ppid: 2 flags:0x00004000
[ 450.243749][ T31] Workqueue: events_unbound linkwatch_event
[ 450.249688][ T31] Call Trace:
[ 450.253039][ T31]
[ 450.256007][ T31] __schedule+0xb6e/0x14c0
[ 450.260411][ T31] ? release_firmware_map_entry+0x190/0x190
[ 451.212167][ T31] ? __mutex_add_waiter+0x17b/0x270
[ 451.217426][ T31] ? __kasan_check_write+0x14/0x20
[ 451.222605][ T31] ? kthread_data+0x50/0xc0
[ 451.227122][ T31] ? wq_worker_sleeping+0x60/0x200
[ 451.232269][ T31] schedule+0x11e/0x1e0
[ 451.236566][ T31] schedule_preempt_disabled+0x13/0x20
[ 451.242068][ T31] __mutex_lock+0x7b6/0x11b0
[ 451.246690][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 451.253524][ T31] ? __kasan_check_write+0x14/0x20
[ 451.258648][ T31] ? __switch_to+0x51d/0xe20
[ 452.213442][ T31] __mutex_lock_slowpath+0xe/0x10
[ 452.218606][ T31] mutex_lock+0x100/0x1a0
[ 452.223018][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 452.229726][ T31] ? __schedule+0xb76/0x14c0
[ 452.234516][ T31] rtnl_lock+0x15/0x20
[ 452.238596][ T31] linkwatch_event+0xe/0x60
[ 452.243126][ T31] process_one_work+0x6be/0xba0
[ 452.248010][ T31] worker_thread+0xa59/0x1200
[ 452.252708][ T31] kthread+0x411/0x500
[ 452.256801][ T31] ? worker_clr_flags+0x190/0x190
[ 452.261830][ T31] ? kthread_blkcg+0xd0/0xd0
[ 453.212048][ T31] ret_from_fork+0x1f/0x30
[ 453.216543][ T31]
[ 453.219607][ T31] INFO: task syz-executor:393 blocked for more than 129 seconds.
[ 453.227479][ T31] Not tainted syzkaller #0
[ 453.232450][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 453.241301][ T31] task:syz-executor state:D stack:22944 pid: 393 ppid: 1 flags:0x00004004
[ 453.250584][ T31] Call Trace:
[ 453.253912][ T31]
[ 453.256859][ T31] __schedule+0xb6e/0x14c0
[ 453.261282][ T31] ? release_firmware_map_entry+0x190/0x190
[ 454.222310][ T31] ? wake_up_process+0x10/0x20
[ 454.227170][ T31] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 454.233364][ T31] ? prepare_to_wait_event+0x40b/0x440
[ 454.238855][ T31] schedule+0x11e/0x1e0
[ 454.243135][ T31] synchronize_rcu_expedited+0x45c/0x5b0
[ 454.248796][ T31] ? synchronize_rcu+0x110/0x110
[ 454.253779][ T31] ? __kasan_slab_free+0x11/0x20
[ 454.258724][ T31] ? slab_free_freelist_hook+0xc2/0x190
[ 455.212182][ T31] ? rcu_exp_handler+0x370/0x370
[ 455.217198][ T31] ? kfree+0xc4/0x270
[ 455.221201][ T31] ? kfree_const+0x39/0x40
[ 455.225651][ T31] ? __kasan_check_write+0x14/0x20
[ 455.230773][ T31] ? kobject_put+0x1a8/0x270
[ 455.235395][ T31] ? store_rps_dev_flow_table_cnt+0x2e0/0x2e0
[ 455.241474][ T31] ? kobject_put+0x214/0x270
[ 455.246096][ T31] ? io_schedule+0xe0/0xe0
[ 455.250544][ T31] ? netdev_queue_update_kobjects+0x3c8/0x3e0
[ 455.256636][ T31] ? __kasan_check_read+0x11/0x20
[ 455.261679][ T31] netif_set_real_num_tx_queues+0x48a/0x780
[ 456.222266][ T31] ? linkwatch_fire_event+0x307/0x380
[ 456.227764][ T31] veth_newlink+0x9bc/0xda0
[ 456.232375][ T31] ? veth_validate+0x200/0x200
[ 456.237212][ T31] ? rtnl_create_link+0x7a4/0x9d0
[ 456.242313][ T31] ? veth_validate+0x200/0x200
[ 456.247089][ T31] rtnl_newlink+0x112d/0x17b0
[ 456.251773][ T31] ? rtnl_setlink+0x400/0x400
[ 456.256474][ T31] ? memcpy+0x56/0x70
[ 456.260468][ T31] ? __set_page_owner+0x2c2/0x2e0
[ 457.211953][ T31] ? __kasan_check_write+0x14/0x20
[ 457.217249][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 457.223913][ T31] ? ns_capable+0x8c/0xf0
[ 457.228269][ T31] ? netlink_net_capable+0x125/0x160
[ 457.233582][ T31] ? rtnl_setlink+0x400/0x400
[ 457.238271][ T31] rtnetlink_rcv_msg+0x9e4/0xb90
[ 457.243513][ T31] ? rtnetlink_bind+0x80/0x80
[ 457.248290][ T31] ? memcpy+0x56/0x70
[ 457.252291][ T31] ? avc_has_perm_noaudit+0x2f4/0x460
[ 457.257677][ T31] ? arch_stack_walk+0xee/0x140
[ 458.212333][ T31] ? avc_denied+0x1b0/0x1b0
[ 458.216894][ T31] ? stack_trace_save+0x98/0xe0
[ 458.221759][ T31] ? avc_has_perm+0x158/0x240
[ 458.226521][ T31] ? avc_has_perm_noaudit+0x460/0x460
[ 458.231951][ T31] ? do_syscall_64+0x4c/0xa0
[ 458.236554][ T31] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 458.242116][ T31] netlink_rcv_skb+0x1e0/0x430
[ 458.246886][ T31] ? rtnetlink_bind+0x80/0x80
[ 458.251553][ T31] ? netlink_ack+0xb60/0xb60
[ 458.256181][ T31] ? __netlink_lookup+0x387/0x3b0
[ 458.261235][ T31] rtnetlink_rcv+0x1c/0x20
[ 459.211935][ T31] netlink_unicast+0x876/0xa40
[ 459.216814][ T31] netlink_sendmsg+0x86a/0xb70
[ 459.221697][ T31] ? netlink_getsockopt+0x530/0x530
[ 459.226922][ T31] ? security_socket_sendmsg+0x82/0xa0
[ 459.232418][ T31] __sys_sendto+0x423/0x580
[ 459.237015][ T31] ? __ia32_sys_getpeername+0x90/0x90
[ 459.242495][ T31] ? alloc_empty_file_noaccount+0x80/0x80
[ 459.248271][ T31] __x64_sys_sendto+0xe5/0x100
[ 459.253057][ T31] x64_sys_call+0x178/0x9a0
[ 459.257623][ T31] do_syscall_64+0x4c/0xa0
[ 460.213395][ T31] ? clear_bhb_loop+0x50/0xa0
[ 460.218126][ T31] ? clear_bhb_loop+0x50/0xa0
[ 460.223114][ T31] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 460.229048][ T31] RIP: 0033:0x7fc33df8e583
[ 460.233518][ T31] RSP: 002b:00007ffe8d05d2c8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 460.242059][ T31] RAX: ffffffffffffffda RBX: 00007fc33ed11620 RCX: 00007fc33df8e583
[ 460.250047][ T31] RDX: 000000000000002c RSI: 00007fc33ed11670 RDI: 0000000000000003
[ 460.258515][ T31] RBP: 0000000000000001 R08: 00007ffe8d05d2e4 R09: 000000000000000c
[ 461.211930][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 461.219962][ T31] R13: 0000000000000000 R14: 00007fc33ed11670 R15: 0000000000000000
[ 461.228018][ T31]
[ 461.231073][ T31] NMI backtrace for cpu 0
[ 461.235401][ T31] CPU: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0
[ 461.242605][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 461.252742][ T31] Call Trace:
[ 461.256018][ T31]
[ 461.258948][ T31] __dump_stack+0x21/0x30
[ 461.263305][ T31] dump_stack_lvl+0xee/0x150
[ 461.267894][ T31] ? show_regs_print_info+0x20/0x20
[ 461.273095][ T31] dump_stack+0x15/0x20
[ 461.277246][ T31] nmi_cpu_backtrace+0x2b4/0x2c0
[ 461.282240][ T31] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 461.288395][ T31] ? asm_sysvec_call_function_single+0x1b/0x20
[ 461.294552][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 461.300792][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 461.306964][ T31] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 461.312974][ T31] arch_trigger_cpumask_backtrace+0x10/0x20
[ 461.318865][ T31] watchdog+0xd64/0xea0
[ 461.323020][ T31] ? hungtask_pm_notify+0x50/0x50
[ 461.328140][ T31] ? __kasan_check_read+0x11/0x20
[ 461.333165][ T31] ? __kthread_parkme+0xac/0x200
[ 461.338098][ T31] ? preempt_count_add+0x90/0x1b0
[ 461.343125][ T31] kthread+0x411/0x500
[ 461.347192][ T31] ? hungtask_pm_notify+0x50/0x50
[ 461.352215][ T31] ? kthread_blkcg+0xd0/0xd0
[ 461.356804][ T31] ret_from_fork+0x1f/0x30
[ 461.361239][ T31]
[ 461.364400][ T31] Sending NMI from CPU 0 to CPUs 1:
[ 461.369616][ C1] NMI backtrace for cpu 1
[ 461.369626][ C1] CPU: 1 PID: 387 Comm: syz.3.18 Not tainted syzkaller #0
[ 461.369642][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 461.369650][ C1] RIP: 0010:__brelse+0x60/0x90
[ 461.369670][ C1] Code: c0 75 41 44 8b 33 31 ff 44 89 f6 e8 aa 62 ab ff 45 85 f6 74 17 e8 f0 5e ab ff 48 89 df be 04 00 00 00 e8 b3 e2 e9 ff f0 ff 0b 13 e8 d9 5e ab ff 48 c7 c7 40 d8 4b 85 e8 1d 7d e2 02 0f 0b 5b
[ 461.369682][ C1] RSP: 0018:ffffc90002d76f90 EFLAGS: 00000206
[ 461.369696][ C1] RAX: ffffffff81bd5f01 RBX: ffff888121aea990 RCX: ffffffff81bd5ffd
[ 461.369707][ C1] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888121aea990
[ 461.369717][ C1] RBP: ffffc90002d76fa0 R08: dffffc0000000000 R09: ffffed102435d533
[ 461.369728][ C1] R10: ffffed102435d533 R11: 1ffff1102435d532 R12: ffffc90002d77100
[ 461.369738][ C1] R13: dffffc0000000000 R14: 0000000000000004 R15: ffff88812ec6f088
[ 461.369748][ C1] FS: 000055558eb00500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 461.369762][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 461.369773][ C1] CR2: 00007f45fddaf000 CR3: 000000012d424000 CR4: 00000000003506a0
[ 461.369788][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 461.369796][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 461.369806][ C1] Call Trace:
[ 461.369810][ C1]
[ 461.369815][ C1] ext4_mark_iloc_dirty+0x2fe4/0x3f50
[ 461.369832][ C1] ? _raw_spin_lock+0x8e/0xe0
[ 461.369849][ C1] __ext4_mark_inode_dirty+0x428/0x610
[ 461.369863][ C1] ? ext4_journal_check_start+0x172/0x240
[ 461.369880][ C1] ext4_dirty_inode+0xbd/0x100
[ 461.369893][ C1] ? __ext4_expand_extra_isize+0x3e0/0x3e0
[ 461.369908][ C1] __mark_inode_dirty+0x1f5/0x9c0
[ 461.369924][ C1] ext4_xattr_block_set+0x1591/0x2cb0
[ 461.369943][ C1] ? ext4_xattr_block_find+0x4f0/0x4f0
[ 461.369958][ C1] ? ext4_xattr_block_find+0xf1/0x4f0
[ 461.369974][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 461.369991][ C1] ? ext4_xattr_set_entry+0x37d0/0x37d0
[ 461.370008][ C1] ? selinux_inode_free_security+0x210/0x210
[ 461.370024][ C1] ext4_initxattrs+0xa6/0x110
[ 461.370046][ C1] security_inode_init_security+0x254/0x370
[ 461.370062][ C1] ? posix_acl_create+0x118/0x440
[ 461.370077][ C1] ? ext4_init_security+0x40/0x40
[ 461.370090][ C1] ? security_dentry_create_files_as+0xc0/0xc0
[ 461.370106][ C1] ? dquot_alloc_inode+0x1c2/0x7d0
[ 461.370121][ C1] ? __ext4_set_acl+0x600/0x600
[ 461.370134][ C1] ? prandom_u32+0x24d/0x290
[ 461.370148][ C1] ext4_init_security+0x34/0x40
[ 461.370162][ C1] __ext4_new_inode+0x2c41/0x3690
[ 461.370178][ C1] ? ext4_has_group_desc_csum+0x1f0/0x1f0
[ 461.370191][ C1] ? dquot_initialize+0x20/0x20
[ 461.370205][ C1] ? ext4_lookup+0x427/0x840
[ 461.370219][ C1] ? ext4_add_entry+0xf40/0xf40
[ 461.370232][ C1] ? may_create+0x377/0x460
[ 461.370246][ C1] ext4_create+0x22a/0x460
[ 461.370260][ C1] ? ext4_lookup+0x840/0x840
[ 461.370273][ C1] ? selinux_inode_create+0x22/0x30
[ 461.370287][ C1] ? security_inode_create+0xbd/0x110
[ 461.370302][ C1] ? ext4_lookup+0x840/0x840
[ 461.370315][ C1] path_openat+0x11ae/0x2f10
[ 461.370333][ C1] ? do_filp_open+0x3e0/0x3e0
[ 461.370346][ C1] ? expand_files+0xde/0x8e0
[ 461.370359][ C1] do_filp_open+0x1b3/0x3e0
[ 461.370373][ C1] ? vfs_tmpfile+0x2d0/0x2d0
[ 461.370391][ C1] do_sys_openat2+0x14c/0x7b0
[ 461.370406][ C1] ? __se_sys_futex+0x139/0x310
[ 461.370421][ C1] ? do_sys_open+0xe0/0xe0
[ 461.370435][ C1] ? __x64_sys_futex+0x100/0x100
[ 461.370451][ C1] __x64_sys_creat+0x8e/0xb0
[ 461.370467][ C1] x64_sys_call+0x94a/0x9a0
[ 461.370481][ C1] do_syscall_64+0x4c/0xa0
[ 461.370495][ C1] ? clear_bhb_loop+0x50/0xa0
[ 461.370508][ C1] ? clear_bhb_loop+0x50/0xa0
[ 461.370520][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 461.370536][ C1] RIP: 0033:0x7fefa8f30749
[ 461.370549][ 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
[ 461.370560][ C1] RSP: 002b:00007ffde2625848 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 461.370574][ C1] RAX: ffffffffffffffda RBX: 00007fefa9186fa0 RCX: 00007fefa8f30749
[ 461.370585][ C1] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 461.370594][ C1] RBP: 00007fefa8fb4f91 R08: 0000000000000000 R09: 0000000000000000
[ 461.370603][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 461.370612][ C1] R13: 00007fefa9186fa0 R14: 00007fefa9186fa0 R15: 0000000000000002
[ 461.370624][ C1]
[ 484.211878][ T31] INFO: task kworker/u4:0:8 blocked for more than 160 seconds.
[ 484.219561][ T31] Not tainted syzkaller #0
[ 484.224766][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 484.233559][ T31] task:kworker/u4:0 state:D stack:21248 pid: 8 ppid: 2 flags:0x00004000
[ 484.242950][ T31] Workqueue: events_unbound linkwatch_event
[ 484.248871][ T31] Call Trace:
[ 484.252191][ T31]
[ 484.255124][ T31] __schedule+0xb6e/0x14c0
[ 484.259616][ T31] ? release_firmware_map_entry+0x190/0x190
[ 485.212478][ T31] ? __mutex_add_waiter+0x17b/0x270
[ 485.217734][ T31] ? __kasan_check_write+0x14/0x20
[ 485.222910][ T31] ? kthread_data+0x50/0xc0
[ 485.227515][ T31] ? wq_worker_sleeping+0x60/0x200
[ 485.232678][ T31] schedule+0x11e/0x1e0
[ 485.236842][ T31] schedule_preempt_disabled+0x13/0x20
[ 485.242315][ T31] __mutex_lock+0x7b6/0x11b0
[ 485.246909][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 485.253692][ T31] ? __kasan_check_write+0x14/0x20
[ 485.258809][ T31] ? __switch_to+0x51d/0xe20
[ 486.212901][ T31] __mutex_lock_slowpath+0xe/0x10
[ 486.217988][ T31] mutex_lock+0x100/0x1a0
[ 486.222518][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 486.229114][ T31] ? __schedule+0xb76/0x14c0
[ 486.233850][ T31] rtnl_lock+0x15/0x20
[ 486.238031][ T31] linkwatch_event+0xe/0x60
[ 486.242649][ T31] process_one_work+0x6be/0xba0
[ 486.247509][ T31] worker_thread+0xa59/0x1200
[ 486.252227][ T31] kthread+0x411/0x500
[ 486.256405][ T31] ? worker_clr_flags+0x190/0x190
[ 486.261419][ T31] ? kthread_blkcg+0xd0/0xd0
[ 487.212083][ T31] ret_from_fork+0x1f/0x30
[ 487.216566][ T31]
[ 487.219634][ T31] INFO: task syz-executor:393 blocked for more than 163 seconds.
[ 487.227409][ T31] Not tainted syzkaller #0
[ 487.232392][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 487.241058][ T31] task:syz-executor state:D stack:22944 pid: 393 ppid: 1 flags:0x00004004
[ 487.250282][ T31] Call Trace:
[ 487.253675][ T31]
[ 487.256691][ T31] __schedule+0xb6e/0x14c0
[ 487.261104][ T31] ? release_firmware_map_entry+0x190/0x190
[ 488.212297][ T31] ? wake_up_process+0x10/0x20
[ 488.217177][ T31] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 488.223208][ T31] ? prepare_to_wait_event+0x40b/0x440
[ 488.228689][ T31] schedule+0x11e/0x1e0
[ 488.232867][ T31] synchronize_rcu_expedited+0x45c/0x5b0
[ 488.238595][ T31] ? synchronize_rcu+0x110/0x110
[ 488.243567][ T31] ? __kasan_slab_free+0x11/0x20
[ 488.248515][ T31] ? slab_free_freelist_hook+0xc2/0x190
[ 488.254087][ T31] ? rcu_exp_handler+0x370/0x370
[ 488.259247][ T31] ? kfree+0xc4/0x270
[ 489.212278][ T31] ? kfree_const+0x39/0x40
[ 489.216761][ T31] ? __kasan_check_write+0x14/0x20
[ 489.221994][ T31] ? kobject_put+0x1a8/0x270
[ 489.226654][ T31] ? store_rps_dev_flow_table_cnt+0x2e0/0x2e0
[ 489.232779][ T31] ? kobject_put+0x214/0x270
[ 489.237376][ T31] ? io_schedule+0xe0/0xe0
[ 489.241802][ T31] ? netdev_queue_update_kobjects+0x3c8/0x3e0
[ 489.247986][ T31] ? __kasan_check_read+0x11/0x20
[ 489.253041][ T31] netif_set_real_num_tx_queues+0x48a/0x780
[ 489.258956][ T31] ? linkwatch_fire_event+0x307/0x380
[ 490.213058][ T31] veth_newlink+0x9bc/0xda0
[ 490.217748][ T31] ? veth_validate+0x200/0x200
[ 490.222583][ T31] ? rtnl_create_link+0x7a4/0x9d0
[ 490.227648][ T31] ? veth_validate+0x200/0x200
[ 490.232449][ T31] rtnl_newlink+0x112d/0x17b0
[ 490.237143][ T31] ? rtnl_setlink+0x400/0x400
[ 490.241828][ T31] ? memcpy+0x56/0x70
[ 490.245865][ T31] ? __set_page_owner+0x2c2/0x2e0
[ 490.250881][ T31] ? __kasan_check_write+0x14/0x20
[ 490.256099][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 491.212188][ T31] ? ns_capable+0x8c/0xf0
[ 491.216577][ T31] ? netlink_net_capable+0x125/0x160
[ 491.221920][ T31] ? rtnl_setlink+0x400/0x400
[ 491.226743][ T31] rtnetlink_rcv_msg+0x9e4/0xb90
[ 491.231698][ T31] ? rtnetlink_bind+0x80/0x80
[ 491.236735][ T31] ? memcpy+0x56/0x70
[ 491.240810][ T31] ? avc_has_perm_noaudit+0x2f4/0x460
[ 491.246214][ T31] ? arch_stack_walk+0xee/0x140
[ 491.251181][ T31] ? avc_denied+0x1b0/0x1b0
[ 491.255706][ T31] ? stack_trace_save+0x98/0xe0
[ 491.260581][ T31] ? avc_has_perm+0x158/0x240
[ 492.213552][ T31] ? avc_has_perm_noaudit+0x460/0x460
[ 492.219005][ T31] ? do_syscall_64+0x4c/0xa0
[ 492.223704][ T31] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 492.229141][ T31] netlink_rcv_skb+0x1e0/0x430
[ 492.233924][ T31] ? rtnetlink_bind+0x80/0x80
[ 492.238627][ T31] ? netlink_ack+0xb60/0xb60
[ 492.243311][ T31] ? __netlink_lookup+0x387/0x3b0
[ 492.248365][ T31] rtnetlink_rcv+0x1c/0x20
[ 492.252821][ T31] netlink_unicast+0x876/0xa40
[ 492.257594][ T31] netlink_sendmsg+0x86a/0xb70
[ 493.212182][ T31] ? netlink_getsockopt+0x530/0x530
[ 493.217535][ T31] ? security_socket_sendmsg+0x82/0xa0
[ 493.223033][ T31] __sys_sendto+0x423/0x580
[ 493.227557][ T31] ? __ia32_sys_getpeername+0x90/0x90
[ 493.233002][ T31] ? alloc_empty_file_noaccount+0x80/0x80
[ 493.238953][ T31] __x64_sys_sendto+0xe5/0x100
[ 493.243775][ T31] x64_sys_call+0x178/0x9a0
[ 493.248305][ T31] do_syscall_64+0x4c/0xa0
[ 493.252741][ T31] ? clear_bhb_loop+0x50/0xa0
[ 493.257422][ T31] ? clear_bhb_loop+0x50/0xa0
[ 494.212268][ T31] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 494.218228][ T31] RIP: 0033:0x7fc33df8e583
[ 494.222932][ T31] RSP: 002b:00007ffe8d05d2c8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 494.231411][ T31] RAX: ffffffffffffffda RBX: 00007fc33ed11620 RCX: 00007fc33df8e583
[ 494.239462][ T31] RDX: 000000000000002c RSI: 00007fc33ed11670 RDI: 0000000000000003
[ 494.247486][ T31] RBP: 0000000000000001 R08: 00007ffe8d05d2e4 R09: 000000000000000c
[ 494.255496][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 495.212084][ T31] R13: 0000000000000000 R14: 00007fc33ed11670 R15: 0000000000000000
[ 495.220140][ T31]
[ 495.223237][ T31] NMI backtrace for cpu 0
[ 495.227576][ T31] CPU: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0
[ 495.234804][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 495.244852][ T31] Call Trace:
[ 495.248146][ T31]
[ 495.251148][ T31] __dump_stack+0x21/0x30
[ 495.255486][ T31] dump_stack_lvl+0xee/0x150
[ 495.260073][ T31] ? show_regs_print_info+0x20/0x20
[ 495.265274][ T31] dump_stack+0x15/0x20
[ 495.269429][ T31] nmi_cpu_backtrace+0x2b4/0x2c0
[ 495.274383][ T31] ? rcu_read_unlock_special+0xab/0x460
[ 495.279925][ T31] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 495.286075][ T31] ? __rcu_read_unlock+0xa0/0xa0
[ 495.291010][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 495.297073][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 495.303134][ T31] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 495.309115][ T31] arch_trigger_cpumask_backtrace+0x10/0x20
[ 495.315099][ T31] watchdog+0xd64/0xea0
[ 495.319255][ T31] ? hungtask_pm_notify+0x50/0x50
[ 495.324276][ T31] ? __kasan_check_read+0x11/0x20
[ 495.329302][ T31] ? __kthread_parkme+0xac/0x200
[ 495.334414][ T31] ? preempt_count_add+0x90/0x1b0
[ 495.339435][ T31] kthread+0x411/0x500
[ 495.343499][ T31] ? hungtask_pm_notify+0x50/0x50
[ 495.348707][ T31] ? kthread_blkcg+0xd0/0xd0
[ 495.353291][ T31] ret_from_fork+0x1f/0x30
[ 495.357704][ T31]
[ 495.360790][ T31] Sending NMI from CPU 0 to CPUs 1:
[ 495.366023][ C1] NMI backtrace for cpu 1
[ 495.366033][ C1] CPU: 1 PID: 387 Comm: syz.3.18 Not tainted syzkaller #0
[ 495.366048][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 495.366056][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x1/0x60
[ 495.366077][ C1] Code: 00 00 0f 0b 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d ec 6e 80 05 48 89 de e8 94 c8 3d 00 5b 5d c3 00 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d 90 ae 99 7e 65 8b 15 91 ae 99 7e
[ 495.366089][ C1] RSP: 0018:ffffc90002d76f60 EFLAGS: 00000246
[ 495.366104][ C1] RAX: ffffffff81d88faa RBX: ffff88812ec6f060 RCX: ffff8881125d2780
[ 495.366116][ C1] RDX: 0000000000000000 RSI: ffff88812ec6f060 RDI: 0000000000000002
[ 495.366126][ C1] RBP: ffffc90002d76fa0 R08: dffffc0000000000 R09: ffffed10225c004b
[ 495.366136][ C1] R10: ffffed10225c004b R11: 1ffff110225c004a R12: 1ffff11025d8de11
[ 495.366147][ C1] R13: dffffc0000000000 R14: ffffc90002d77100 R15: ffff88812ec6f088
[ 495.366157][ C1] FS: 000055558eb00500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 495.366171][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 495.366181][ C1] CR2: 00007f45fddaf000 CR3: 000000012d424000 CR4: 00000000003506a0
[ 495.366197][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 495.366205][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 495.366215][ C1] Call Trace:
[ 495.366220][ C1]
[ 495.366225][ C1] ? ext4_fc_track_inode+0x24/0x280
[ 495.366243][ C1] ext4_mark_iloc_dirty+0xc8/0x3f50
[ 495.366258][ C1] ? __ext4_journal_ensure_credits+0x430/0x430
[ 495.366275][ C1] ? _raw_spin_lock+0x8e/0xe0
[ 495.366291][ C1] ? ext4_reserve_inode_write+0x281/0x320
[ 495.366307][ C1] __ext4_mark_inode_dirty+0x428/0x610
[ 495.366321][ C1] ? ext4_journal_check_start+0x172/0x240
[ 495.366337][ C1] ext4_dirty_inode+0xbd/0x100
[ 495.366350][ C1] ? __ext4_expand_extra_isize+0x3e0/0x3e0
[ 495.366365][ C1] __mark_inode_dirty+0x1f5/0x9c0
[ 495.366382][ C1] ext4_xattr_block_set+0x1591/0x2cb0
[ 495.366400][ C1] ? ext4_xattr_block_find+0x4f0/0x4f0
[ 495.366415][ C1] ? ext4_xattr_block_find+0xf1/0x4f0
[ 495.366431][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 495.366448][ C1] ? ext4_xattr_set_entry+0x37d0/0x37d0
[ 495.366465][ C1] ? selinux_inode_free_security+0x210/0x210
[ 495.366482][ C1] ext4_initxattrs+0xa6/0x110
[ 495.366495][ C1] security_inode_init_security+0x254/0x370
[ 495.366511][ C1] ? posix_acl_create+0x118/0x440
[ 495.366525][ C1] ? ext4_init_security+0x40/0x40
[ 495.366539][ C1] ? security_dentry_create_files_as+0xc0/0xc0
[ 495.366555][ C1] ? dquot_alloc_inode+0x1c2/0x7d0
[ 495.366570][ C1] ? __ext4_set_acl+0x600/0x600
[ 495.366583][ C1] ? prandom_u32+0x24d/0x290
[ 495.366596][ C1] ext4_init_security+0x34/0x40
[ 495.366609][ C1] __ext4_new_inode+0x2c41/0x3690
[ 495.366625][ C1] ? ext4_has_group_desc_csum+0x1f0/0x1f0
[ 495.366639][ C1] ? dquot_initialize+0x20/0x20
[ 495.366653][ C1] ? ext4_lookup+0x427/0x840
[ 495.366667][ C1] ? ext4_add_entry+0xf40/0xf40
[ 495.366680][ C1] ? may_create+0x377/0x460
[ 495.366693][ C1] ext4_create+0x22a/0x460
[ 495.366707][ C1] ? ext4_lookup+0x840/0x840
[ 495.366720][ C1] ? selinux_inode_create+0x22/0x30
[ 495.366735][ C1] ? security_inode_create+0xbd/0x110
[ 495.366749][ C1] ? ext4_lookup+0x840/0x840
[ 495.366762][ C1] path_openat+0x11ae/0x2f10
[ 495.366780][ C1] ? do_filp_open+0x3e0/0x3e0
[ 495.366794][ C1] ? expand_files+0xde/0x8e0
[ 495.366807][ C1] do_filp_open+0x1b3/0x3e0
[ 495.366821][ C1] ? vfs_tmpfile+0x2d0/0x2d0
[ 495.366838][ C1] do_sys_openat2+0x14c/0x7b0
[ 495.366855][ C1] ? __se_sys_futex+0x139/0x310
[ 495.366871][ C1] ? do_sys_open+0xe0/0xe0
[ 495.366885][ C1] ? __x64_sys_futex+0x100/0x100
[ 495.366901][ C1] __x64_sys_creat+0x8e/0xb0
[ 495.366917][ C1] x64_sys_call+0x94a/0x9a0
[ 495.366930][ C1] do_syscall_64+0x4c/0xa0
[ 495.366952][ C1] ? clear_bhb_loop+0x50/0xa0
[ 495.366964][ C1] ? clear_bhb_loop+0x50/0xa0
[ 495.366977][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 495.366992][ C1] RIP: 0033:0x7fefa8f30749
[ 495.367005][ 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
[ 495.367016][ C1] RSP: 002b:00007ffde2625848 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 495.367031][ C1] RAX: ffffffffffffffda RBX: 00007fefa9186fa0 RCX: 00007fefa8f30749
[ 495.367041][ C1] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 495.367050][ C1] RBP: 00007fefa8fb4f91 R08: 0000000000000000 R09: 0000000000000000
[ 495.367059][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 495.367068][ C1] R13: 00007fefa9186fa0 R14: 00007fefa9186fa0 R15: 0000000000000002
[ 495.367079][ C1]
[ 518.213820][ T31] INFO: task kworker/u4:0:8 blocked for more than 194 seconds.
[ 518.221422][ T31] Not tainted syzkaller #0
[ 518.226734][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 518.235459][ T31] task:kworker/u4:0 state:D stack:21248 pid: 8 ppid: 2 flags:0x00004000
[ 518.244912][ T31] Workqueue: events_unbound linkwatch_event
[ 518.250870][ T31] Call Trace:
[ 518.254288][ T31]
[ 518.257242][ T31] __schedule+0xb6e/0x14c0
[ 518.261653][ T31] ? release_firmware_map_entry+0x190/0x190
[ 519.212471][ T31] ? __mutex_add_waiter+0x17b/0x270
[ 519.217727][ T31] ? __kasan_check_write+0x14/0x20
[ 519.222897][ T31] ? kthread_data+0x50/0xc0
[ 519.227411][ T31] ? wq_worker_sleeping+0x60/0x200
[ 519.232545][ T31] schedule+0x11e/0x1e0
[ 519.236712][ T31] schedule_preempt_disabled+0x13/0x20
[ 519.242200][ T31] __mutex_lock+0x7b6/0x11b0
[ 519.246795][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 519.253619][ T31] ? __kasan_check_write+0x14/0x20
[ 519.258840][ T31] ? __switch_to+0x51d/0xe20
[ 520.213414][ T31] __mutex_lock_slowpath+0xe/0x10
[ 520.218499][ T31] mutex_lock+0x100/0x1a0
[ 520.222946][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 520.229560][ T31] ? __schedule+0xb76/0x14c0
[ 520.234180][ T31] rtnl_lock+0x15/0x20
[ 520.238253][ T31] linkwatch_event+0xe/0x60
[ 520.242783][ T31] process_one_work+0x6be/0xba0
[ 520.247654][ T31] worker_thread+0xa59/0x1200
[ 520.252356][ T31] kthread+0x411/0x500
[ 520.256450][ T31] ? worker_clr_flags+0x190/0x190
[ 520.261492][ T31] ? kthread_blkcg+0xd0/0xd0
[ 521.212163][ T31] ret_from_fork+0x1f/0x30
[ 521.216645][ T31]
[ 521.219716][ T31] INFO: task syz-executor:393 blocked for more than 197 seconds.
[ 521.227786][ T31] Not tainted syzkaller #0
[ 521.232838][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 521.241609][ T31] task:syz-executor state:D stack:22944 pid: 393 ppid: 1 flags:0x00004004
[ 521.250830][ T31] Call Trace:
[ 521.254224][ T31]
[ 521.257158][ T31] __schedule+0xb6e/0x14c0
[ 521.261566][ T31] ? release_firmware_map_entry+0x190/0x190
[ 522.213376][ T31] ? wake_up_process+0x10/0x20
[ 522.218207][ T31] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 522.224151][ T31] ? prepare_to_wait_event+0x40b/0x440
[ 522.229642][ T31] schedule+0x11e/0x1e0
[ 522.233834][ T31] synchronize_rcu_expedited+0x45c/0x5b0
[ 522.239490][ T31] ? synchronize_rcu+0x110/0x110
[ 522.244470][ T31] ? __kasan_slab_free+0x11/0x20
[ 522.249418][ T31] ? slab_free_freelist_hook+0xc2/0x190
[ 522.255016][ T31] ? rcu_exp_handler+0x370/0x370
[ 522.260106][ T31] ? kfree+0xc4/0x270
[ 523.212268][ T31] ? kfree_const+0x39/0x40
[ 523.216740][ T31] ? __kasan_check_write+0x14/0x20
[ 523.222266][ T31] ? kobject_put+0x1a8/0x270
[ 523.227088][ T31] ? store_rps_dev_flow_table_cnt+0x2e0/0x2e0
[ 523.233217][ T31] ? kobject_put+0x214/0x270
[ 523.237835][ T31] ? io_schedule+0xe0/0xe0
[ 523.242275][ T31] ? netdev_queue_update_kobjects+0x3c8/0x3e0
[ 523.248349][ T31] ? __kasan_check_read+0x11/0x20
[ 523.253394][ T31] netif_set_real_num_tx_queues+0x48a/0x780
[ 523.259297][ T31] ? linkwatch_fire_event+0x307/0x380
[ 524.212497][ T31] veth_newlink+0x9bc/0xda0
[ 524.217072][ T31] ? veth_validate+0x200/0x200
[ 524.222227][ T31] ? rtnl_create_link+0x7a4/0x9d0
[ 524.227338][ T31] ? veth_validate+0x200/0x200
[ 524.232153][ T31] rtnl_newlink+0x112d/0x17b0
[ 524.236854][ T31] ? rtnl_setlink+0x400/0x400
[ 524.241548][ T31] ? memcpy+0x56/0x70
[ 524.245551][ T31] ? __set_page_owner+0x2c2/0x2e0
[ 524.250583][ T31] ? __kasan_check_write+0x14/0x20
[ 524.255719][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 525.211972][ T31] ? ns_capable+0x8c/0xf0
[ 525.216371][ T31] ? netlink_net_capable+0x125/0x160
[ 525.221678][ T31] ? rtnl_setlink+0x400/0x400
[ 525.226371][ T31] rtnetlink_rcv_msg+0x9e4/0xb90
[ 525.231331][ T31] ? rtnetlink_bind+0x80/0x80
[ 525.236042][ T31] ? memcpy+0x56/0x70
[ 525.240035][ T31] ? avc_has_perm_noaudit+0x2f4/0x460
[ 525.245419][ T31] ? arch_stack_walk+0xee/0x140
[ 525.250367][ T31] ? avc_denied+0x1b0/0x1b0
[ 525.254882][ T31] ? stack_trace_save+0x98/0xe0
[ 525.259838][ T31] ? avc_has_perm+0x158/0x240
[ 526.213849][ T31] ? avc_has_perm_noaudit+0x460/0x460
[ 526.219353][ T31] ? do_syscall_64+0x4c/0xa0
[ 526.224087][ T31] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 526.229500][ T31] netlink_rcv_skb+0x1e0/0x430
[ 526.234557][ T31] ? rtnetlink_bind+0x80/0x80
[ 526.239259][ T31] ? netlink_ack+0xb60/0xb60
[ 526.244104][ T31] ? __netlink_lookup+0x387/0x3b0
[ 526.249245][ T31] rtnetlink_rcv+0x1c/0x20
[ 526.253894][ T31] netlink_unicast+0x876/0xa40
[ 526.258789][ T31] netlink_sendmsg+0x86a/0xb70
[ 527.212870][ T31] ? netlink_getsockopt+0x530/0x530
[ 527.218144][ T31] ? security_socket_sendmsg+0x82/0xa0
[ 527.230910][ T31] __sys_sendto+0x423/0x580
[ 527.241881][ T31] ? __ia32_sys_getpeername+0x90/0x90
[ 527.247294][ T31] ? alloc_empty_file_noaccount+0x80/0x80
[ 527.253074][ T31] __x64_sys_sendto+0xe5/0x100
[ 527.257854][ T31] x64_sys_call+0x178/0x9a0
[ 528.212059][ T31] do_syscall_64+0x4c/0xa0
[ 528.217143][ T31] ? clear_bhb_loop+0x50/0xa0
[ 528.221875][ T31] ? clear_bhb_loop+0x50/0xa0
[ 528.226646][ T31] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 528.232573][ T31] RIP: 0033:0x7fc33df8e583
[ 528.236992][ T31] RSP: 002b:00007ffe8d05d2c8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 528.245416][ T31] RAX: ffffffffffffffda RBX: 00007fc33ed11620 RCX: 00007fc33df8e583
[ 528.253424][ T31] RDX: 000000000000002c RSI: 00007fc33ed11670 RDI: 0000000000000003
[ 528.261410][ T31] RBP: 0000000000000001 R08: 00007ffe8d05d2e4 R09: 000000000000000c
[ 529.212044][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 529.220070][ T31] R13: 0000000000000000 R14: 00007fc33ed11670 R15: 0000000000000000
[ 529.228188][ T31]
[ 529.231233][ T31] INFO: task syz-executor:396 blocked for more than 142 seconds.
[ 529.238999][ T31] Not tainted syzkaller #0
[ 529.243971][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 529.252780][ T31] task:syz-executor state:D stack:28192 pid: 396 ppid: 1 flags:0x00004004
[ 530.212258][ T31] Call Trace:
[ 530.215603][ T31]
[ 530.218563][ T31] __schedule+0xb6e/0x14c0
[ 530.223023][ T31] ? release_firmware_map_entry+0x190/0x190
[ 530.229553][ T31] ? __mutex_add_waiter+0xc7/0x270
[ 530.234831][ T31] ? __kasan_check_write+0x14/0x20
[ 530.240242][ T31] ? __ww_mutex_check_waiters+0x350/0x350
[ 530.246332][ T31] schedule+0x11e/0x1e0
[ 530.250755][ T31] schedule_preempt_disabled+0x13/0x20
[ 530.256331][ T31] __mutex_lock+0x7b6/0x11b0
[ 530.260928][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 531.212340][ T31] ? selinux_capable+0x29c/0x380
[ 531.217335][ T31] ? selinux_capset+0xf0/0xf0
[ 531.222116][ T31] ? cap_capable+0x1aa/0x230
[ 531.226753][ T31] __mutex_lock_slowpath+0xe/0x10
[ 531.231785][ T31] mutex_lock+0x100/0x1a0
[ 531.236181][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 531.242800][ T31] ? ns_capable+0x8c/0xf0
[ 531.247219][ T31] ? netlink_net_capable+0x125/0x160
[ 531.252627][ T31] rtnetlink_rcv_msg+0x4af/0xb90
[ 531.257664][ T31] ? rtnetlink_bind+0x80/0x80
[ 532.212499][ T31] ? memcpy+0x56/0x70
[ 532.216637][ T31] ? avc_has_perm_noaudit+0x2f4/0x460
[ 532.222619][ T31] ? arch_stack_walk+0xee/0x140
[ 532.227629][ T31] ? avc_denied+0x1b0/0x1b0
[ 532.232209][ T31] ? stack_trace_save+0x98/0xe0
[ 532.237169][ T31] ? avc_has_perm+0x158/0x240
[ 532.241866][ T31] ? avc_has_perm_noaudit+0x460/0x460
[ 532.247247][ T31] ? do_syscall_64+0x4c/0xa0
[ 532.251958][ T31] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 532.257335][ T31] netlink_rcv_skb+0x1e0/0x430
[ 533.212136][ T31] ? rtnetlink_bind+0x80/0x80
[ 533.216907][ T31] ? netlink_ack+0xb60/0xb60
[ 533.221694][ T31] ? __netlink_lookup+0x387/0x3b0
[ 533.226810][ T31] rtnetlink_rcv+0x1c/0x20
[ 533.231248][ T31] netlink_unicast+0x876/0xa40
[ 533.236096][ T31] netlink_sendmsg+0x86a/0xb70
[ 533.240865][ T31] ? netlink_getsockopt+0x530/0x530
[ 533.246073][ T31] ? security_socket_sendmsg+0x82/0xa0
[ 533.251540][ T31] __sys_sendto+0x423/0x580
[ 533.256053][ T31] ? __ia32_sys_getpeername+0x90/0x90
[ 533.261437][ T31] __x64_sys_sendto+0xe5/0x100
[ 534.212308][ T31] x64_sys_call+0x178/0x9a0
[ 534.216904][ T31] do_syscall_64+0x4c/0xa0
[ 534.221340][ T31] ? clear_bhb_loop+0x50/0xa0
[ 534.226131][ T31] ? clear_bhb_loop+0x50/0xa0
[ 534.230864][ T31] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 534.236883][ T31] RIP: 0033:0x7f9d1fb28583
[ 534.241403][ T31] RSP: 002b:00007fff3d6d49f8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 534.249844][ T31] RAX: ffffffffffffffda RBX: 00007f9d208ab620 RCX: 00007f9d1fb28583
[ 534.257981][ T31] RDX: 0000000000000028 RSI: 00007f9d208ab670 RDI: 0000000000000003
[ 535.221918][ T31] RBP: 0000000000000001 R08: 00007fff3d6d4a14 R09: 000000000000000c
[ 535.229947][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 535.238034][ T31] R13: 0000000000000000 R14: 00007f9d208ab670 R15: 0000000000000000
[ 535.246052][ T31]
[ 535.249099][ T31] NMI backtrace for cpu 0
[ 535.253500][ T31] CPU: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0
[ 535.260785][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 535.270827][ T31] Call Trace:
[ 535.274102][ T31]
[ 535.277111][ T31] __dump_stack+0x21/0x30
[ 535.281438][ T31] dump_stack_lvl+0xee/0x150
[ 535.286026][ T31] ? show_regs_print_info+0x20/0x20
[ 535.291212][ T31] dump_stack+0x15/0x20
[ 535.295487][ T31] nmi_cpu_backtrace+0x2b4/0x2c0
[ 535.300416][ T31] ? rcu_read_unlock_special+0xab/0x460
[ 535.305989][ T31] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 535.312136][ T31] ? __rcu_read_unlock+0xa0/0xa0
[ 535.317071][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 535.323126][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 535.329191][ T31] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 535.335158][ T31] arch_trigger_cpumask_backtrace+0x10/0x20
[ 535.341043][ T31] watchdog+0xd64/0xea0
[ 535.345197][ T31] ? hungtask_pm_notify+0x50/0x50
[ 535.350500][ T31] ? __kasan_check_read+0x11/0x20
[ 535.355514][ T31] ? __kthread_parkme+0xac/0x200
[ 535.360798][ T31] ? preempt_count_add+0x90/0x1b0
[ 535.365808][ T31] kthread+0x411/0x500
[ 535.369865][ T31] ? hungtask_pm_notify+0x50/0x50
[ 535.374874][ T31] ? kthread_blkcg+0xd0/0xd0
[ 535.379890][ T31] ret_from_fork+0x1f/0x30
[ 535.384311][ T31]
[ 535.387387][ T31] Sending NMI from CPU 0 to CPUs 1:
[ 535.392630][ C1] NMI backtrace for cpu 1
[ 535.392640][ C1] CPU: 1 PID: 387 Comm: syz.3.18 Not tainted syzkaller #0
[ 535.392656][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 535.392664][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x5c/0x60
[ 535.392686][ C1] Code: 38 0b 00 00 83 fa 02 75 21 48 8b 91 40 0b 00 00 48 8b 32 48 8d 7e 01 8b 89 3c 0b 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a <5d> c3 66 90 55 48 89 e5 48 8b 45 08 65 48 8b 0d 30 ae 99 7e 65 8b
[ 535.392698][ C1] RSP: 0018:ffffc90002d76fa0 EFLAGS: 00000293
[ 535.392712][ C1] RAX: ffffffff81d8b701 RBX: ffff88812ec6ef58 RCX: ffff8881125d2780
[ 535.392724][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000800
[ 535.392733][ C1] RBP: ffffc90002d76fa0 R08: dffffc0000000000 R09: ffffed1025d8de39
[ 535.392744][ C1] R10: ffffed1025d8de39 R11: 1ffff11025d8de38 R12: ffffc90002d77100
[ 535.392754][ C1] R13: dffffc0000000000 R14: 0000000000000013 R15: ffff88812ec6f088
[ 535.392765][ C1] FS: 000055558eb00500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 535.392778][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 535.392789][ C1] CR2: 000000c006eaf010 CR3: 000000012d424000 CR4: 00000000003506a0
[ 535.392804][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 535.392813][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 535.392822][ C1] Call Trace:
[ 535.392826][ C1]
[ 535.392831][ C1] ext4_mark_iloc_dirty+0x2801/0x3f50
[ 535.392849][ C1] ? _raw_spin_lock+0x8e/0xe0
[ 535.392867][ C1] __ext4_mark_inode_dirty+0x428/0x610
[ 535.392881][ C1] ? ext4_journal_check_start+0x172/0x240
[ 535.392898][ C1] ext4_dirty_inode+0xbd/0x100
[ 535.392912][ C1] ? __ext4_expand_extra_isize+0x3e0/0x3e0
[ 535.392927][ C1] __mark_inode_dirty+0x1f5/0x9c0
[ 535.392943][ C1] ext4_xattr_block_set+0x13db/0x2cb0
[ 535.392963][ C1] ? ext4_xattr_block_find+0x4f0/0x4f0
[ 535.392978][ C1] ? ext4_xattr_block_find+0xf1/0x4f0
[ 535.392994][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 535.393011][ C1] ? ext4_xattr_set_entry+0x37d0/0x37d0
[ 535.393027][ C1] ? selinux_inode_free_security+0x210/0x210
[ 535.393044][ C1] ext4_initxattrs+0xa6/0x110
[ 535.393058][ C1] security_inode_init_security+0x254/0x370
[ 535.393074][ C1] ? posix_acl_create+0x118/0x440
[ 535.393088][ C1] ? ext4_init_security+0x40/0x40
[ 535.393109][ C1] ? security_dentry_create_files_as+0xc0/0xc0
[ 535.393125][ C1] ? dquot_alloc_inode+0x1c2/0x7d0
[ 535.393140][ C1] ? __ext4_set_acl+0x600/0x600
[ 535.393153][ C1] ? prandom_u32+0x24d/0x290
[ 535.393166][ C1] ext4_init_security+0x34/0x40
[ 535.393179][ C1] __ext4_new_inode+0x2c41/0x3690
[ 535.393195][ C1] ? ext4_has_group_desc_csum+0x1f0/0x1f0
[ 535.393209][ C1] ? dquot_initialize+0x20/0x20
[ 535.393223][ C1] ? ext4_lookup+0x427/0x840
[ 535.393237][ C1] ? ext4_add_entry+0xf40/0xf40
[ 535.393250][ C1] ? may_create+0x377/0x460
[ 535.393263][ C1] ext4_create+0x22a/0x460
[ 535.393277][ C1] ? ext4_lookup+0x840/0x840
[ 535.393290][ C1] ? selinux_inode_create+0x22/0x30
[ 535.393304][ C1] ? security_inode_create+0xbd/0x110
[ 535.393319][ C1] ? ext4_lookup+0x840/0x840
[ 535.393331][ C1] path_openat+0x11ae/0x2f10
[ 535.393350][ C1] ? do_filp_open+0x3e0/0x3e0
[ 535.393364][ C1] ? expand_files+0xde/0x8e0
[ 535.393377][ C1] do_filp_open+0x1b3/0x3e0
[ 535.393391][ C1] ? vfs_tmpfile+0x2d0/0x2d0
[ 535.393408][ C1] do_sys_openat2+0x14c/0x7b0
[ 535.393424][ C1] ? __se_sys_futex+0x139/0x310
[ 535.393440][ C1] ? do_sys_open+0xe0/0xe0
[ 535.393454][ C1] ? __x64_sys_futex+0x100/0x100
[ 535.393470][ C1] __x64_sys_creat+0x8e/0xb0
[ 535.393486][ C1] x64_sys_call+0x94a/0x9a0
[ 535.393499][ C1] do_syscall_64+0x4c/0xa0
[ 535.393515][ C1] ? clear_bhb_loop+0x50/0xa0
[ 535.393527][ C1] ? clear_bhb_loop+0x50/0xa0
[ 535.393540][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 535.393555][ C1] RIP: 0033:0x7fefa8f30749
[ 535.393568][ 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
[ 535.393579][ C1] RSP: 002b:00007ffde2625848 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 535.393594][ C1] RAX: ffffffffffffffda RBX: 00007fefa9186fa0 RCX: 00007fefa8f30749
[ 535.393605][ C1] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 535.393614][ C1] RBP: 00007fefa8fb4f91 R08: 0000000000000000 R09: 0000000000000000
[ 535.393623][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 535.393632][ C1] R13: 00007fefa9186fa0 R14: 00007fefa9186fa0 R15: 0000000000000002
[ 535.393644][ C1]
[ 558.212188][ T31] INFO: task kworker/u4:0:8 blocked for more than 234 seconds.
[ 558.219816][ T31] Not tainted syzkaller #0
[ 558.224797][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 558.233673][ T31] task:kworker/u4:0 state:D stack:21248 pid: 8 ppid: 2 flags:0x00004000
[ 558.243077][ T31] Workqueue: events_unbound linkwatch_event
[ 558.249005][ T31] Call Trace:
[ 558.252325][ T31]
[ 558.255275][ T31] __schedule+0xb6e/0x14c0
[ 558.259683][ T31] ? release_firmware_map_entry+0x190/0x190
[ 559.212432][ T31] ? __mutex_add_waiter+0x17b/0x270
[ 559.217690][ T31] ? __kasan_check_write+0x14/0x20
[ 559.223138][ T31] ? kthread_data+0x50/0xc0
[ 559.227952][ T31] ? wq_worker_sleeping+0x60/0x200
[ 559.233358][ T31] schedule+0x11e/0x1e0
[ 559.237773][ T31] schedule_preempt_disabled+0x13/0x20
[ 559.243298][ T31] __mutex_lock+0x7b6/0x11b0
[ 559.247902][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 559.254819][ T31] ? __kasan_check_write+0x14/0x20
[ 559.259961][ T31] ? __switch_to+0x51d/0xe20
[ 560.212308][ T31] __mutex_lock_slowpath+0xe/0x10
[ 560.217388][ T31] mutex_lock+0x100/0x1a0
[ 560.221731][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 560.228402][ T31] ? __schedule+0xb76/0x14c0
[ 560.233055][ T31] rtnl_lock+0x15/0x20
[ 560.237158][ T31] linkwatch_event+0xe/0x60
[ 560.241652][ T31] process_one_work+0x6be/0xba0
[ 560.246524][ T31] worker_thread+0xa59/0x1200
[ 560.251210][ T31] kthread+0x411/0x500
[ 560.255322][ T31] ? worker_clr_flags+0x190/0x190
[ 560.260371][ T31] ? kthread_blkcg+0xd0/0xd0
[ 561.212137][ T31] ret_from_fork+0x1f/0x30
[ 561.216639][ T31]
[ 561.219985][ T31] INFO: task syz-executor:393 blocked for more than 237 seconds.
[ 561.228020][ T31] Not tainted syzkaller #0
[ 561.232972][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 561.241730][ T31] task:syz-executor state:D stack:22944 pid: 393 ppid: 1 flags:0x00004004
[ 561.250989][ T31] Call Trace:
[ 561.254314][ T31]
[ 561.257343][ T31] __schedule+0xb6e/0x14c0
[ 562.223598][ T31] ? release_firmware_map_entry+0x190/0x190
[ 562.229842][ T31] ? wake_up_process+0x10/0x20
[ 562.234970][ T31] ? _raw_spin_unlock_irqrestore+0x5b/0x80
[ 562.240799][ T31] ? prepare_to_wait_event+0x40b/0x440
[ 562.246398][ T31] schedule+0x11e/0x1e0
[ 562.250562][ T31] synchronize_rcu_expedited+0x45c/0x5b0
[ 562.256309][ T31] ? synchronize_rcu+0x110/0x110
[ 562.261359][ T31] ? __kasan_slab_free+0x11/0x20
[ 563.212404][ T31] ? slab_free_freelist_hook+0xc2/0x190
[ 563.218037][ T31] ? rcu_exp_handler+0x370/0x370
[ 563.223288][ T31] ? kfree+0xc4/0x270
[ 563.227279][ T31] ? kfree_const+0x39/0x40
[ 563.231687][ T31] ? __kasan_check_write+0x14/0x20
[ 563.236816][ T31] ? kobject_put+0x1a8/0x270
[ 563.241426][ T31] ? store_rps_dev_flow_table_cnt+0x2e0/0x2e0
[ 563.247516][ T31] ? kobject_put+0x214/0x270
[ 563.252138][ T31] ? io_schedule+0xe0/0xe0
[ 563.256554][ T31] ? netdev_queue_update_kobjects+0x3c8/0x3e0
[ 564.212873][ T31] ? __kasan_check_read+0x11/0x20
[ 564.217957][ T31] netif_set_real_num_tx_queues+0x48a/0x780
[ 564.223926][ T31] ? linkwatch_fire_event+0x307/0x380
[ 564.229319][ T31] veth_newlink+0x9bc/0xda0
[ 564.233887][ T31] ? veth_validate+0x200/0x200
[ 564.238664][ T31] ? rtnl_create_link+0x7a4/0x9d0
[ 564.243807][ T31] ? veth_validate+0x200/0x200
[ 564.248583][ T31] rtnl_newlink+0x112d/0x17b0
[ 564.253302][ T31] ? rtnl_setlink+0x400/0x400
[ 564.257989][ T31] ? memcpy+0x56/0x70
[ 565.212308][ T31] ? __set_page_owner+0x2c2/0x2e0
[ 565.217479][ T31] ? __kasan_check_write+0x14/0x20
[ 565.222622][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 565.229300][ T31] ? ns_capable+0x8c/0xf0
[ 565.233773][ T31] ? netlink_net_capable+0x125/0x160
[ 565.239167][ T31] ? rtnl_setlink+0x400/0x400
[ 565.243906][ T31] rtnetlink_rcv_msg+0x9e4/0xb90
[ 565.248859][ T31] ? rtnetlink_bind+0x80/0x80
[ 565.253653][ T31] ? memcpy+0x56/0x70
[ 565.257658][ T31] ? avc_has_perm_noaudit+0x2f4/0x460
[ 566.212611][ T31] ? arch_stack_walk+0xee/0x140
[ 566.217521][ T31] ? avc_denied+0x1b0/0x1b0
[ 566.222405][ T31] ? stack_trace_save+0x98/0xe0
[ 566.227437][ T31] ? avc_has_perm+0x158/0x240
[ 566.232390][ T31] ? avc_has_perm_noaudit+0x460/0x460
[ 566.237775][ T31] ? do_syscall_64+0x4c/0xa0
[ 566.242394][ T31] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 566.247818][ T31] netlink_rcv_skb+0x1e0/0x430
[ 566.252693][ T31] ? rtnetlink_bind+0x80/0x80
[ 566.257389][ T31] ? netlink_ack+0xb60/0xb60
[ 567.212159][ T31] ? __netlink_lookup+0x387/0x3b0
[ 567.217246][ T31] rtnetlink_rcv+0x1c/0x20
[ 567.221678][ T31] netlink_unicast+0x876/0xa40
[ 567.226618][ T31] netlink_sendmsg+0x86a/0xb70
[ 567.231517][ T31] ? netlink_getsockopt+0x530/0x530
[ 567.236786][ T31] ? security_socket_sendmsg+0x82/0xa0
[ 567.242284][ T31] __sys_sendto+0x423/0x580
[ 567.246837][ T31] ? __ia32_sys_getpeername+0x90/0x90
[ 567.252221][ T31] ? alloc_empty_file_noaccount+0x80/0x80
[ 567.257950][ T31] __x64_sys_sendto+0xe5/0x100
[ 568.212673][ T31] x64_sys_call+0x178/0x9a0
[ 568.217901][ T31] do_syscall_64+0x4c/0xa0
[ 568.222451][ T31] ? clear_bhb_loop+0x50/0xa0
[ 568.227146][ T31] ? clear_bhb_loop+0x50/0xa0
[ 568.232050][ T31] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 568.238042][ T31] RIP: 0033:0x7fc33df8e583
[ 568.242567][ T31] RSP: 002b:00007ffe8d05d2c8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 568.251076][ T31] RAX: ffffffffffffffda RBX: 00007fc33ed11620 RCX: 00007fc33df8e583
[ 568.259065][ T31] RDX: 000000000000002c RSI: 00007fc33ed11670 RDI: 0000000000000003
[ 569.212002][ T31] RBP: 0000000000000001 R08: 00007ffe8d05d2e4 R09: 000000000000000c
[ 569.220031][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 569.228077][ T31] R13: 0000000000000000 R14: 00007fc33ed11670 R15: 0000000000000000
[ 569.236188][ T31]
[ 569.239221][ T31] INFO: task syz-executor:396 blocked for more than 182 seconds.
[ 569.247042][ T31] Not tainted syzkaller #0
[ 569.252026][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 569.260688][ T31] task:syz-executor state:D stack:28192 pid: 396 ppid: 1 flags:0x00004004
[ 570.213554][ T31] Call Trace:
[ 570.216888][ T31]
[ 570.219832][ T31] __schedule+0xb6e/0x14c0
[ 570.224682][ T31] ? release_firmware_map_entry+0x190/0x190
[ 570.230637][ T31] ? __mutex_add_waiter+0xc7/0x270
[ 570.235841][ T31] ? __kasan_check_write+0x14/0x20
[ 570.240965][ T31] ? __ww_mutex_check_waiters+0x350/0x350
[ 570.246703][ T31] schedule+0x11e/0x1e0
[ 570.250977][ T31] schedule_preempt_disabled+0x13/0x20
[ 570.256540][ T31] __mutex_lock+0x7b6/0x11b0
[ 570.261158][ T31] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20
[ 571.222179][ T31] ? selinux_capable+0x29c/0x380
[ 571.227157][ T31] ? selinux_capset+0xf0/0xf0
[ 571.231874][ T31] ? cap_capable+0x1aa/0x230
[ 571.236490][ T31] __mutex_lock_slowpath+0xe/0x10
[ 571.241520][ T31] mutex_lock+0x100/0x1a0
[ 571.245862][ T31] ? wait_for_completion_killable_timeout+0x10/0x10
[ 571.252576][ T31] ? ns_capable+0x8c/0xf0
[ 571.256903][ T31] ? netlink_net_capable+0x125/0x160
[ 572.212560][ T31] rtnetlink_rcv_msg+0x4af/0xb90
[ 572.217830][ T31] ? rtnetlink_bind+0x80/0x80
[ 572.222601][ T31] ? memcpy+0x56/0x70
[ 572.226617][ T31] ? avc_has_perm_noaudit+0x2f4/0x460
[ 572.232123][ T31] ? arch_stack_walk+0xee/0x140
[ 572.236997][ T31] ? avc_denied+0x1b0/0x1b0
[ 572.241579][ T31] ? stack_trace_save+0x98/0xe0
[ 572.246536][ T31] ? avc_has_perm+0x158/0x240
[ 572.251225][ T31] ? avc_has_perm_noaudit+0x460/0x460
[ 572.256714][ T31] ? do_syscall_64+0x4c/0xa0
[ 572.261335][ T31] ? selinux_nlmsg_lookup+0x400/0x4c0
[ 573.212246][ T31] netlink_rcv_skb+0x1e0/0x430
[ 573.217255][ T31] ? rtnetlink_bind+0x80/0x80
[ 573.222622][ T31] ? netlink_ack+0xb60/0xb60
[ 573.227349][ T31] ? __netlink_lookup+0x387/0x3b0
[ 573.232446][ T31] rtnetlink_rcv+0x1c/0x20
[ 573.236895][ T31] netlink_unicast+0x876/0xa40
[ 573.241654][ T31] netlink_sendmsg+0x86a/0xb70
[ 573.246484][ T31] ? netlink_getsockopt+0x530/0x530
[ 573.251702][ T31] ? security_socket_sendmsg+0x82/0xa0
[ 573.257187][ T31] __sys_sendto+0x423/0x580
[ 573.261702][ T31] ? __ia32_sys_getpeername+0x90/0x90
[ 574.212334][ T31] __x64_sys_sendto+0xe5/0x100
[ 574.217162][ T31] x64_sys_call+0x178/0x9a0
[ 574.221689][ T31] do_syscall_64+0x4c/0xa0
[ 574.226473][ T31] ? clear_bhb_loop+0x50/0xa0
[ 574.231359][ T31] ? clear_bhb_loop+0x50/0xa0
[ 574.236082][ T31] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 574.242130][ T31] RIP: 0033:0x7f9d1fb28583
[ 574.246545][ T31] RSP: 002b:00007fff3d6d49f8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 574.254981][ T31] RAX: ffffffffffffffda RBX: 00007f9d208ab620 RCX: 00007f9d1fb28583
[ 575.212590][ T31] RDX: 0000000000000028 RSI: 00007f9d208ab670 RDI: 0000000000000003
[ 575.220629][ T31] RBP: 0000000000000001 R08: 00007fff3d6d4a14 R09: 000000000000000c
[ 575.228943][ T31] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
[ 575.237467][ T31] R13: 0000000000000000 R14: 00007f9d208ab670 R15: 0000000000000000
[ 575.245714][ T31]
[ 575.248759][ T31] NMI backtrace for cpu 0
[ 575.253074][ T31] CPU: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0
[ 575.260520][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 575.270666][ T31] Call Trace:
[ 575.273964][ T31]
[ 575.276914][ T31] __dump_stack+0x21/0x30
[ 575.281233][ T31] dump_stack_lvl+0xee/0x150
[ 575.285865][ T31] ? show_regs_print_info+0x20/0x20
[ 575.291052][ T31] dump_stack+0x15/0x20
[ 575.295225][ T31] nmi_cpu_backtrace+0x2b4/0x2c0
[ 575.300157][ T31] ? rcu_read_unlock_special+0xab/0x460
[ 575.305791][ T31] ? nmi_trigger_cpumask_backtrace+0x240/0x240
[ 575.312118][ T31] ? __rcu_read_unlock+0xa0/0xa0
[ 575.317071][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 575.323163][ T31] ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 575.329218][ T31] nmi_trigger_cpumask_backtrace+0x138/0x240
[ 575.335203][ T31] arch_trigger_cpumask_backtrace+0x10/0x20
[ 575.341098][ T31] watchdog+0xd64/0xea0
[ 575.345251][ T31] ? hungtask_pm_notify+0x50/0x50
[ 575.350348][ T31] ? __kasan_check_read+0x11/0x20
[ 575.355446][ T31] ? __kthread_parkme+0xac/0x200
[ 575.360374][ T31] ? preempt_count_add+0x90/0x1b0
[ 575.365566][ T31] kthread+0x411/0x500
[ 575.369620][ T31] ? hungtask_pm_notify+0x50/0x50
[ 575.374636][ T31] ? kthread_blkcg+0xd0/0xd0
[ 575.379299][ T31] ret_from_fork+0x1f/0x30
[ 575.383702][ T31]
[ 575.386797][ T31] Sending NMI from CPU 0 to CPUs 1:
[ 575.392047][ C1] NMI backtrace for cpu 1
[ 575.392058][ C1] CPU: 1 PID: 387 Comm: syz.3.18 Not tainted syzkaller #0
[ 575.392073][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
[ 575.392081][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x60
[ 575.392102][ C1] Code: 48 8b 3d ec 6e 80 05 48 89 de e8 94 c8 3d 00 5b 5d c3 00 55 48 89 e5 48 8b 45 08 65 48 8b 0d 90 ae 99 7e 65 8b 15 91 ae 99 7e <81> e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 5c 0b 00 00
[ 575.392114][ C1] RSP: 0018:ffffc90002d76fb0 EFLAGS: 00000017
[ 575.392129][ C1] RAX: ffffffff81bd3cb6 RBX: 0000000000000000 RCX: ffff8881125d2780
[ 575.392140][ C1] RDX: 0000000080000000 RSI: 0000000000000071 RDI: 0000000000000009
[ 575.392150][ C1] RBP: ffffc90002d76fb0 R08: dffffc0000000000 R09: ffffed102248e3ed
[ 575.392160][ C1] R10: ffffed102248e3ed R11: 1ffff1102248e3ec R12: ffff888121aea930
[ 575.392170][ C1] R13: 0000000000000009 R14: 00000000000352c8 R15: 0000000000000071
[ 575.392181][ C1] FS: 000055558eb00500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[ 575.392194][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 575.392205][ C1] CR2: 00007f53800fe000 CR3: 000000012d424000 CR4: 00000000003506a0
[ 575.392220][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 575.392229][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 575.392238][ C1] Call Trace:
[ 575.392243][ C1]
[ 575.392248][ C1] __find_get_block+0x1d6/0xee0
[ 575.392267][ C1] ? write_boundary_block+0x140/0x140
[ 575.392284][ C1] __getblk_gfp+0x30/0x7d0
[ 575.392299][ C1] ? ext4_journal_check_start+0x172/0x240
[ 575.392315][ C1] ? __ext4_journal_stop+0x36/0x1a0
[ 575.392330][ C1] ? var_wake_function+0xf0/0xf0
[ 575.392344][ C1] __ext4_sb_bread_gfp+0x76/0x210
[ 575.392361][ C1] ext4_sb_bread+0x28/0x30
[ 575.392376][ C1] ext4_xattr_block_set+0xc4a/0x2cb0
[ 575.392396][ C1] ? ext4_xattr_block_find+0x4f0/0x4f0
[ 575.392411][ C1] ? ext4_xattr_block_find+0xf1/0x4f0
[ 575.392427][ C1] ext4_xattr_set_handle+0xbd5/0x12b0
[ 575.392444][ C1] ? ext4_xattr_set_entry+0x37d0/0x37d0
[ 575.392460][ C1] ? selinux_inode_free_security+0x210/0x210
[ 575.392477][ C1] ext4_initxattrs+0xa6/0x110
[ 575.392490][ C1] security_inode_init_security+0x254/0x370
[ 575.392506][ C1] ? posix_acl_create+0x118/0x440
[ 575.392520][ C1] ? ext4_init_security+0x40/0x40
[ 575.392533][ C1] ? security_dentry_create_files_as+0xc0/0xc0
[ 575.392549][ C1] ? dquot_alloc_inode+0x1c2/0x7d0
[ 575.392564][ C1] ? __ext4_set_acl+0x600/0x600
[ 575.392577][ C1] ? prandom_u32+0x24d/0x290
[ 575.392591][ C1] ext4_init_security+0x34/0x40
[ 575.392604][ C1] __ext4_new_inode+0x2c41/0x3690
[ 575.392620][ C1] ? ext4_has_group_desc_csum+0x1f0/0x1f0
[ 575.392634][ C1] ? dquot_initialize+0x20/0x20
[ 575.392648][ C1] ? ext4_lookup+0x427/0x840
[ 575.392662][ C1] ? ext4_add_entry+0xf40/0xf40
[ 575.392674][ C1] ? may_create+0x377/0x460
[ 575.392688][ C1] ext4_create+0x22a/0x460
[ 575.392703][ C1] ? ext4_lookup+0x840/0x840
[ 575.392715][ C1] ? selinux_inode_create+0x22/0x30
[ 575.392730][ C1] ? security_inode_create+0xbd/0x110
[ 575.392744][ C1] ? ext4_lookup+0x840/0x840
[ 575.392757][ C1] path_openat+0x11ae/0x2f10
[ 575.392775][ C1] ? do_filp_open+0x3e0/0x3e0
[ 575.392789][ C1] ? expand_files+0xde/0x8e0
[ 575.392802][ C1] do_filp_open+0x1b3/0x3e0
[ 575.392816][ C1] ? vfs_tmpfile+0x2d0/0x2d0
[ 575.392834][ C1] do_sys_openat2+0x14c/0x7b0
[ 575.392850][ C1] ? __se_sys_futex+0x139/0x310
[ 575.392865][ C1] ? do_sys_open+0xe0/0xe0
[ 575.392880][ C1] ? __x64_sys_futex+0x100/0x100
[ 575.392896][ C1] __x64_sys_creat+0x8e/0xb0
[ 575.392912][ C1] x64_sys_call+0x94a/0x9a0
[ 575.392926][ C1] do_syscall_64+0x4c/0xa0
[ 575.392941][ C1] ? clear_bhb_loop+0x50/0xa0
[ 575.392954][ C1] ? clear_bhb_loop+0x50/0xa0
[ 575.392966][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 575.392982][ C1] RIP: 0033:0x7fefa8f30749
[ 575.393003][ 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
[ 575.393014][ C1] RSP: 002b:00007ffde2625848 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[ 575.393028][ C1] RAX: ffffffffffffffda RBX: 00007fefa9186fa0 RCX: 00007fefa8f30749
[ 575.393039][ C1] RDX: 0000000000000000 RSI: 0000000000000182 RDI: 0000200000000000
[ 575.393048][ C1] RBP: 00007fefa8fb4f91 R08: 0000000000000000 R09: 0000000000000000
[ 575.393057][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 575.393066][ C1] R13: 00007fefa9186fa0 R14: 00007fefa9186fa0 R15: 0000000000000002
[ 575.393078][ C1]