syzkaller
syzkaller login: [ 14.583224][ T36] kauditd_printk_skb: 31 callbacks suppressed
[ 14.583242][ T36] audit: type=1400 audit(1790733522.340:59): avc: denied { transition } for pid=230 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 14.588034][ T36] audit: type=1400 audit(1790733522.340:60): avc: denied { noatsecure } for pid=230 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 14.592593][ T36] audit: type=1400 audit(1790733522.350:61): avc: denied { write } for pid=230 comm="sh" path="pipe:[2719]" dev="pipefs" ino=2719 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[ 14.596115][ T36] audit: type=1400 audit(1790733522.350:62): avc: denied { rlimitinh } for pid=230 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 14.599070][ T36] audit: type=1400 audit(1790733522.350:63): avc: denied { siginh } for pid=230 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.1.111' (ED25519) to the list of known hosts.
2026/09/30 02:00:18 parsed 1 programs
2026/09/30 02:00:18 serving rpc on tcp://37699
[ 110.744887][ T36] audit: type=1400 audit(1790733618.500:64): avc: denied { node_bind } for pid=302 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1
[ 112.316596][ T36] audit: type=1400 audit(1790733620.080:65): avc: denied { mounton } for pid=308 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1
[ 112.320921][ T308] cgroup: Unknown subsys name 'net'
[ 112.339365][ T36] audit: type=1400 audit(1790733620.080:66): avc: denied { mount } for pid=308 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
[ 112.367495][ T36] audit: type=1400 audit(1790733620.130:67): avc: denied { unmount } for pid=308 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 112.367993][ T308] cgroup: Unknown subsys name 'devices'
[ 112.472466][ T308] cgroup: Unknown subsys name 'hugetlb'
[ 112.478160][ T308] cgroup: Unknown subsys name 'rlimit'
[ 112.583084][ T36] audit: type=1400 audit(1790733620.340:68): avc: denied { setattr } for pid=308 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=190 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1
[ 112.606565][ T36] audit: type=1400 audit(1790733620.340:69): avc: denied { create } for pid=308 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 112.627461][ T36] audit: type=1400 audit(1790733620.340:70): avc: denied { write } for pid=308 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 112.647895][ T36] audit: type=1400 audit(1790733620.340:71): avc: denied { read } for pid=308 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
[ 112.668565][ T36] audit: type=1400 audit(1790733620.340:72): avc: denied { sys_module } for pid=308 comm="syz-executor" capability=16 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=capability permissive=1
[ 112.676121][ T311] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
[ 112.690433][ T36] audit: type=1400 audit(1790733620.340:73): avc: denied { mounton } for pid=308 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
[ 112.746002][ T308] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 113.748571][ T319] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 114.367341][ T355] bridge0: port 1(bridge_slave_0) entered blocking state
[ 114.374819][ T355] bridge0: port 1(bridge_slave_0) entered disabled state
[ 114.382066][ T355] bridge_slave_0: entered allmulticast mode
[ 114.388732][ T355] bridge_slave_0: entered promiscuous mode
[ 114.396524][ T355] bridge0: port 2(bridge_slave_1) entered blocking state
[ 114.403635][ T355] bridge0: port 2(bridge_slave_1) entered disabled state
[ 114.410884][ T355] bridge_slave_1: entered allmulticast mode
[ 114.417288][ T355] bridge_slave_1: entered promiscuous mode
[ 114.531349][ T355] bridge0: port 2(bridge_slave_1) entered blocking state
[ 114.538464][ T355] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 114.545857][ T355] bridge0: port 1(bridge_slave_0) entered blocking state
[ 114.552958][ T355] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 114.589698][ T13] bridge0: port 1(bridge_slave_0) entered disabled state
[ 114.599048][ T13] bridge0: port 2(bridge_slave_1) entered disabled state
[ 114.621329][ T12] bridge0: port 1(bridge_slave_0) entered blocking state
[ 114.628454][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 114.645826][ T13] bridge0: port 2(bridge_slave_1) entered blocking state
[ 114.653000][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 114.691732][ T355] veth0_vlan: entered promiscuous mode
[ 114.706918][ T355] veth1_macvtap: entered promiscuous mode
2026/09/30 02:00:22 executed programs: 0
[ 114.782398][ T12] bridge_slave_1: left allmulticast mode
[ 114.788111][ T12] bridge_slave_1: left promiscuous mode
[ 114.794211][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 114.803529][ T12] bridge_slave_0: left allmulticast mode
[ 114.809660][ T12] bridge_slave_0: left promiscuous mode
[ 114.815357][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 114.973415][ T12] veth1_macvtap: left promiscuous mode
[ 114.978954][ T12] veth0_vlan: left promiscuous mode
[ 115.086870][ T378] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.094290][ T378] bridge0: port 1(bridge_slave_0) entered disabled state
[ 115.101479][ T378] bridge_slave_0: entered allmulticast mode
[ 115.107766][ T378] bridge_slave_0: entered promiscuous mode
[ 115.116083][ T384] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.123195][ T384] bridge0: port 1(bridge_slave_0) entered disabled state
[ 115.130397][ T384] bridge_slave_0: entered allmulticast mode
[ 115.136679][ T384] bridge_slave_0: entered promiscuous mode
[ 115.143921][ T384] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.151118][ T384] bridge0: port 2(bridge_slave_1) entered disabled state
[ 115.158220][ T384] bridge_slave_1: entered allmulticast mode
[ 115.164752][ T384] bridge_slave_1: entered promiscuous mode
[ 115.171077][ T378] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.178230][ T378] bridge0: port 2(bridge_slave_1) entered disabled state
[ 115.185419][ T378] bridge_slave_1: entered allmulticast mode
[ 115.192020][ T378] bridge_slave_1: entered promiscuous mode
[ 115.224082][ T380] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.231256][ T380] bridge0: port 1(bridge_slave_0) entered disabled state
[ 115.238443][ T380] bridge_slave_0: entered allmulticast mode
[ 115.245007][ T380] bridge_slave_0: entered promiscuous mode
[ 115.251712][ T380] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.258787][ T380] bridge0: port 2(bridge_slave_1) entered disabled state
[ 115.265964][ T380] bridge_slave_1: entered allmulticast mode
[ 115.272421][ T380] bridge_slave_1: entered promiscuous mode
[ 115.342569][ T383] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.349776][ T383] bridge0: port 1(bridge_slave_0) entered disabled state
[ 115.356885][ T383] bridge_slave_0: entered allmulticast mode
[ 115.363322][ T383] bridge_slave_0: entered promiscuous mode
[ 115.372803][ T383] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.380106][ T383] bridge0: port 2(bridge_slave_1) entered disabled state
[ 115.387326][ T383] bridge_slave_1: entered allmulticast mode
[ 115.393778][ T383] bridge_slave_1: entered promiscuous mode
[ 115.527451][ T380] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.534570][ T380] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 115.591823][ T383] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.599481][ T383] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 115.606973][ T383] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.614075][ T383] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 115.631245][ T13] bridge0: port 2(bridge_slave_1) entered disabled state
[ 115.638685][ T13] bridge0: port 1(bridge_slave_0) entered disabled state
[ 115.646240][ T13] bridge0: port 2(bridge_slave_1) entered disabled state
[ 115.664074][ T13] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.671275][ T13] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 115.683976][ T45] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.691173][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 115.699093][ T45] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.706185][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 115.717004][ T13] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.724145][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 115.743488][ T12] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.750959][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 115.759019][ T12] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.766159][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 115.802773][ T12] bridge0: port 1(bridge_slave_0) entered blocking state
[ 115.809887][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 115.818206][ T12] bridge0: port 2(bridge_slave_1) entered blocking state
[ 115.825313][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 115.845683][ T378] veth0_vlan: entered promiscuous mode
[ 115.864678][ T384] veth0_vlan: entered promiscuous mode
[ 115.872962][ T380] veth0_vlan: entered promiscuous mode
[ 115.892077][ T378] veth1_macvtap: entered promiscuous mode
[ 115.900661][ T380] veth1_macvtap: entered promiscuous mode
[ 115.917378][ T384] veth1_macvtap: entered promiscuous mode
[ 115.969297][ T36] kauditd_printk_skb: 28 callbacks suppressed
[ 115.969315][ T36] audit: type=1400 audit(1790733623.720:102): avc: denied { mount } for pid=397 comm="syz.0.17" name="/" dev="sysfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysfs_t tclass=filesystem permissive=1
[ 116.020461][ T383] veth0_vlan: entered promiscuous mode
[ 116.028670][ T36] audit: type=1400 audit(1790733623.780:103): avc: denied { unmount } for pid=378 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysfs_t tclass=filesystem permissive=1
[ 116.074224][ T383] veth1_macvtap: entered promiscuous mode
2026/09/30 02:00:27 executed programs: 769
[ 123.384311][ T12] bridge_slave_1: left allmulticast mode
[ 123.390096][ T12] bridge_slave_1: left promiscuous mode
[ 123.395768][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 123.404139][ T12] bridge_slave_0: left allmulticast mode
[ 123.409995][ T12] bridge_slave_0: left promiscuous mode
[ 123.415696][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 123.527093][ T12] veth1_macvtap: left promiscuous mode
[ 123.532749][ T12] veth0_vlan: left promiscuous mode
2026/09/30 02:00:32 executed programs: 1673
2026/09/30 02:00:37 executed programs: 2453
2026/09/30 02:00:42 executed programs: 3179
2026/09/30 02:00:47 executed programs: 3769
2026/09/30 02:00:52 executed programs: 4359
2026/09/30 02:00:57 executed programs: 4951
2026/09/30 02:01:02 executed programs: 5541
2026/09/30 02:01:07 executed programs: 6134
2026/09/30 02:01:12 executed programs: 6726
2026/09/30 02:01:17 executed programs: 7317
2026/09/30 02:01:22 executed programs: 7909
2026/09/30 02:01:27 executed programs: 8498
[ 255.649670][ T37] INFO: task kworker/u8:0:12 blocked for more than 122 seconds.
[ 255.657367][ T37] Not tainted syzkaller #0
[ 255.662401][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 255.671159][ T37] task:kworker/u8:0 state:D stack:0 pid:12 tgid:12 ppid:2 flags:0x00004000
[ 255.681452][ T37] Workqueue: writeback wb_workfn (flush-8:0)
[ 255.687607][ T37] Call Trace:
[ 255.690952][ T37]
[ 255.693919][ T37] __schedule+0x1496/0x20b0
[ 255.698446][ T37] ? __sched_text_start+0x10/0x10
[ 255.703546][ T37] ? __blk_flush_plug+0x425/0x4e0
[ 255.708622][ T37] ? __cfi___blk_flush_plug+0x10/0x10
[ 255.714139][ T37] ? _raw_spin_lock_irqsave+0xc1/0x160
[ 255.719683][ T37] ? kthread_data+0x54/0xc0
[ 255.724208][ T37] ? wq_worker_sleeping+0x68/0x260
[ 255.729335][ T37] schedule+0xc5/0x240
[ 255.733516][ T37] io_schedule+0x85/0x150
[ 255.737897][ T37] bit_wait_io+0x17/0xd0
[ 255.742259][ T37] __wait_on_bit+0xb6/0x2e0
[ 255.746825][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 255.751851][ T37] out_of_line_wait_on_bit+0x139/0x190
[ 255.757479][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 255.762537][ T37] ? __cfi_out_of_line_wait_on_bit+0x10/0x10
[ 255.768565][ T37] ? __cfi_wake_bit_function+0x10/0x10
[ 255.774116][ T37] ? jbd2_journal_cancel_revoke+0x4c7/0x530
[ 255.780078][ T37] do_get_write_access+0x558/0xd70
[ 255.785252][ T37] jbd2_journal_get_write_access+0x268/0x3d0
[ 255.791316][ T37] __ext4_journal_get_write_access+0x1b6/0x6a0
[ 255.797523][ T37] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 255.804294][ T37] ? ext4_get_group_desc+0x23e/0x410
[ 255.809664][ T37] ext4_mb_mark_context+0x393/0xee0
[ 255.814879][ T37] ? __cfi_ext4_mb_mark_context+0x10/0x10
[ 255.820671][ T37] ext4_mb_mark_diskspace_used+0x3aa/0x830
[ 255.826518][ T37] ? ext4_discard_allocated_blocks+0x690/0x690
[ 255.832765][ T37] ? ext4_mb_new_blocks+0x3ec/0x36c0
[ 255.838249][ T37] ext4_mb_new_blocks+0x840/0x36c0
[ 255.843488][ T37] ? __kmalloc_noprof+0x261/0x510
[ 255.848558][ T37] ? ext4_find_extent+0x1f5/0xd80
[ 255.853660][ T37] ? ext4_ext_search_right+0x49e/0x880
[ 255.859183][ T37] ? ext4_inode_to_goal_block+0x34f/0x4c0
[ 255.865002][ T37] ext4_ext_map_blocks+0x14d9/0x6080
[ 255.870345][ T37] ? stack_depot_save_flags+0x399/0x800
[ 255.875923][ T37] ? kasan_save_track+0x4f/0x80
[ 255.880936][ T37] ? kasan_save_track+0x3e/0x80
[ 255.885867][ T37] ? kmem_cache_alloc_noprof+0x1bf/0x410
[ 255.891583][ T37] ? ext4_alloc_io_end_vec+0x42/0x1e0
[ 255.897009][ T37] ? ext4_do_writepages+0x106f/0x39f0
[ 255.902456][ T37] ? __cfi_ext4_ext_map_blocks+0x10/0x10
[ 255.908125][ T37] ? writeback_sb_inodes+0x6a5/0xfb0
[ 255.913550][ T37] ? __writeback_inodes_wb+0x129/0x280
[ 255.919102][ T37] ? wb_writeback+0x3bb/0x850
[ 255.924004][ T37] ? wb_workfn+0xa03/0xef0
[ 255.928473][ T37] ? process_scheduled_works+0x7f4/0x1060
[ 255.934267][ T37] ? worker_thread+0xc99/0x13f0
[ 255.939158][ T37] ? kthread+0x2c4/0x360
[ 255.943486][ T37] ? ret_from_fork+0x67/0xa0
[ 255.948123][ T37] ? ret_from_fork_asm+0x1a/0x30
[ 255.953139][ T37] ? ext4_es_lookup_extent+0x567/0x900
[ 255.958636][ T37] ext4_map_blocks+0x873/0x17f0
[ 255.963642][ T37] ? __cfi_ext4_map_blocks+0x10/0x10
[ 255.968961][ T37] ? kmem_cache_alloc_noprof+0x1e2/0x410
[ 255.974667][ T37] ? jbd2__journal_start+0x3c9/0x860
[ 255.980100][ T37] ? ext4_inode_journal_mode+0x392/0x480
[ 255.985838][ T37] ext4_do_writepages+0x1c4a/0x39f0
[ 255.991129][ T37] ? ret_from_fork_asm+0x1a/0x30
[ 255.996102][ T37] ? ext4_normal_submit_inode_data_buffers+0x270/0x270
[ 256.003020][ T37] ? __asan_memcpy+0x5a/0x80
[ 256.007654][ T37] ? __asan_set_shadow_00+0x12/0x20
[ 256.012940][ T37] ? sched_balance_rq+0x473f/0x4dd0
[ 256.018179][ T37] ? sched_balance_update_blocked_averages+0x12e0/0x12e0
[ 256.025362][ T37] ? sched_clock+0x44/0x60
[ 256.029838][ T37] ext4_writepages+0x28c/0x550
[ 256.034622][ T37] ? __cfi_ext4_writepages+0x10/0x10
[ 256.039968][ T37] ? __cfi__raw_spin_lock+0x10/0x10
[ 256.045205][ T37] ? arch_scale_cpu_capacity+0x1c/0xb0
[ 256.050925][ T37] ? __cfi_ext4_writepages+0x10/0x10
[ 256.056304][ T37] do_writepages+0x3d4/0x7f0
[ 256.060978][ T37] ? __kasan_check_read+0x15/0x20
[ 256.066036][ T37] ? kthread_is_per_cpu+0xbe/0xf0
[ 256.071124][ T37] ? __cfi_do_writepages+0x10/0x10
[ 256.076278][ T37] ? __kasan_check_write+0x18/0x20
[ 256.081472][ T37] ? _raw_spin_lock+0x92/0x120
[ 256.086270][ T37] __writeback_single_inode+0xc8/0xba0
[ 256.092009][ T37] writeback_sb_inodes+0x6a5/0xfb0
[ 256.097183][ T37] ? queue_io+0x690/0x690
[ 256.101618][ T37] ? __kasan_check_read+0x15/0x20
[ 256.106679][ T37] ? queue_io+0x3d9/0x690
[ 256.111080][ T37] __writeback_inodes_wb+0x129/0x280
[ 256.116404][ T37] wb_writeback+0x3bb/0x850
[ 256.120987][ T37] ? inode_cgwb_move_to_attached+0x470/0x470
[ 256.127071][ T37] ? kvm_sched_clock_read+0x15/0x30
[ 256.132365][ T37] wb_workfn+0xa03/0xef0
[ 256.136642][ T37] ? __cfi_wb_workfn+0x10/0x10
[ 256.141568][ T37] ? _raw_spin_unlock+0x45/0x60
[ 256.146491][ T37] ? finish_task_switch+0x139/0x770
[ 256.151796][ T37] ? kick_pool+0xb9/0x540
[ 256.156176][ T37] process_scheduled_works+0x7f4/0x1060
[ 256.161802][ T37] worker_thread+0xc99/0x13f0
[ 256.166553][ T37] kthread+0x2c4/0x360
[ 256.170701][ T37] ? __cfi_worker_thread+0x10/0x10
[ 256.175893][ T37] ? __cfi_kthread+0x10/0x10
[ 256.180560][ T37] ret_from_fork+0x67/0xa0
[ 256.185020][ T37] ? __cfi_kthread+0x10/0x10
[ 256.189663][ T37] ret_from_fork_asm+0x1a/0x30
[ 256.194460][ T37]
[ 256.197497][ T37] INFO: task jbd2/sda1-8:73 blocked for more than 123 seconds.
[ 256.205255][ T37] Not tainted syzkaller #0
[ 256.210335][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 256.219074][ T37] task:jbd2/sda1-8 state:D stack:0 pid:73 tgid:73 ppid:2 flags:0x00004000
[ 256.229621][ T37] Call Trace:
[ 256.232936][ T37]
[ 256.235885][ T37] __schedule+0x1496/0x20b0
[ 256.240478][ T37] ? __sched_text_start+0x10/0x10
[ 256.245633][ T37] ? dd_has_work+0x1f3/0x2f0
[ 256.250299][ T37] ? __kasan_check_write+0x18/0x20
[ 256.255444][ T37] ? _raw_spin_lock_irqsave+0xc1/0x160
[ 256.260968][ T37] ? __cfi__raw_spin_lock_irqsave+0x10/0x10
[ 256.266943][ T37] ? blk_mq_flush_plug_list+0x1517/0x1750
[ 256.272733][ T37] schedule+0xc5/0x240
[ 256.276842][ T37] io_schedule+0x85/0x150
[ 256.281304][ T37] bit_wait_io+0x17/0xd0
[ 256.285681][ T37] __wait_on_bit+0xb6/0x2e0
[ 256.290287][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 256.295269][ T37] out_of_line_wait_on_bit+0x139/0x190
[ 256.300814][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 256.305800][ T37] ? __cfi_out_of_line_wait_on_bit+0x10/0x10
[ 256.311864][ T37] ? __cfi_wake_bit_function+0x10/0x10
[ 256.317408][ T37] ? __cfi__raw_write_lock+0x10/0x10
[ 256.322805][ T37] ? _raw_read_unlock+0x16/0x40
[ 256.327698][ T37] __wait_on_buffer+0x5a/0x70
[ 256.332463][ T37] jbd2_journal_commit_transaction+0x2dba/0x5510
[ 256.338848][ T37] ? __cfi_jbd2_journal_commit_transaction+0x10/0x10
[ 256.345611][ T37] ? __schedule+0x149e/0x20b0
[ 256.350348][ T37] ? __kasan_check_write+0x18/0x20
[ 256.355489][ T37] ? _raw_spin_lock_irqsave+0xc1/0x160
[ 256.361023][ T37] ? _raw_spin_lock_irqsave+0xc1/0x160
[ 256.366547][ T37] ? __cfi__raw_spin_lock_irqsave+0x10/0x10
[ 256.372527][ T37] ? _raw_spin_lock_irqsave+0xc1/0x160
[ 256.378037][ T37] ? _raw_spin_unlock_irqrestore+0x4a/0x70
[ 256.383973][ T37] ? __try_to_del_timer_sync+0x2e8/0x440
[ 256.389693][ T37] kjournald2+0x386/0x6a0
[ 256.394046][ T37] ? __cfi_kjournald2+0x10/0x10
[ 256.398916][ T37] ? set_cpus_allowed_ptr+0xa1/0xf0
[ 256.404279][ T37] ? __cfi_autoremove_wake_function+0x10/0x10
[ 256.410401][ T37] ? __kasan_check_read+0x15/0x20
[ 256.415436][ T37] ? __kthread_parkme+0x12f/0x180
[ 256.420522][ T37] ? schedule+0xc5/0x240
[ 256.424815][ T37] kthread+0x2c4/0x360
[ 256.428895][ T37] ? __cfi_kjournald2+0x10/0x10
[ 256.433840][ T37] ? __cfi_kthread+0x10/0x10
[ 256.438463][ T37] ret_from_fork+0x67/0xa0
[ 256.442953][ T37] ? __cfi_kthread+0x10/0x10
[ 256.447572][ T37] ret_from_fork_asm+0x1a/0x30
[ 256.452404][ T37]
[ 256.455459][ T37] INFO: task syz.4.552:933 blocked for more than 123 seconds.
[ 256.463082][ T37] Not tainted syzkaller #0
[ 256.468133][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 256.476888][ T37] task:syz.4.552 state:D stack:0 pid:933 tgid:933 ppid:384 flags:0x00000004
[ 256.487134][ T37] Call Trace:
[ 256.490547][ T37]
[ 256.493507][ T37] __schedule+0x1496/0x20b0
[ 256.498035][ T37] ? __sched_text_start+0x10/0x10
[ 256.503178][ T37] ? is_bpf_text_address+0x17b/0x1a0
[ 256.508517][ T37] ? __kasan_check_write+0x18/0x20
[ 256.513728][ T37] ? _raw_spin_lock_irqsave+0xc1/0x160
[ 256.519224][ T37] ? __cfi__raw_spin_lock_irqsave+0x10/0x10
[ 256.525180][ T37] ? folio_mark_accessed+0x35f/0x620
[ 256.530554][ T37] ? __cfi_stack_trace_consume_entry+0x10/0x10
[ 256.536756][ T37] schedule+0xc5/0x240
[ 256.540916][ T37] io_schedule+0x85/0x150
[ 256.545309][ T37] bit_wait_io+0x17/0xd0
[ 256.549640][ T37] __wait_on_bit+0xb6/0x2e0
[ 256.554204][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 256.559172][ T37] out_of_line_wait_on_bit+0x139/0x190
[ 256.564736][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 256.569740][ T37] ? __cfi_out_of_line_wait_on_bit+0x10/0x10
[ 256.575740][ T37] ? __cfi_wake_bit_function+0x10/0x10
[ 256.581284][ T37] do_get_write_access+0x558/0xd70
[ 256.586615][ T37] jbd2_journal_get_write_access+0x268/0x3d0
[ 256.592682][ T37] __ext4_journal_get_write_access+0x1b6/0x6a0
[ 256.598887][ T37] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 256.605670][ T37] ? __kasan_slab_alloc+0x73/0x90
[ 256.610773][ T37] ? kmem_cache_alloc_noprof+0x1e2/0x410
[ 256.616424][ T37] ext4_reserve_inode_write+0x1f6/0x2e0
[ 256.622036][ T37] __ext4_mark_inode_dirty+0xac/0x5e0
[ 256.627474][ T37] ext4_dirty_inode+0xc9/0x110
[ 256.632316][ T37] ? __cfi_ext4_dirty_inode+0x10/0x10
[ 256.637724][ T37] __mark_inode_dirty+0x251/0xc50
[ 256.642820][ T37] ? __cfi___mark_inode_dirty+0x10/0x10
[ 256.648427][ T37] ? mnt_get_write_access_file+0x1af/0x3b0
[ 256.654326][ T37] ? __kasan_check_read+0x15/0x20
[ 256.659387][ T37] file_update_time+0x1d3/0x210
[ 256.664316][ T37] ext4_page_mkwrite+0x2bf/0x1120
[ 256.669408][ T37] ? __kasan_check_write+0x18/0x20
[ 256.674652][ T37] ? folio_unlock+0x137/0x1b0
[ 256.679402][ T37] ? __cfi_ext4_page_mkwrite+0x10/0x10
[ 256.684932][ T37] ? __alloc_pages_noprof+0x35a/0x7e0
[ 256.690378][ T37] do_pte_missing+0x12c4/0x4440
[ 256.695254][ T37] ? pte_marker_clear+0x1b0/0x1b0
[ 256.700355][ T37] ? __thp_vma_allowable_orders+0x820/0x9a0
[ 256.706324][ T37] ? __cfi___pmd_alloc+0x10/0x10
[ 256.711342][ T37] ? __cfi___thp_vma_allowable_orders+0x10/0x10
[ 256.717635][ T37] handle_mm_fault+0x1189/0x1ba0
[ 256.722673][ T37] ? __cfi_handle_mm_fault+0x10/0x10
[ 256.728031][ T37] ? lock_vma_under_rcu+0x4cf/0x590
[ 256.733311][ T37] do_user_addr_fault+0x951/0x1230
[ 256.738458][ T37] ? __x64_sys_prctl+0xf0/0xf0
[ 256.743287][ T37] ? fpregs_assert_state_consistent+0xb6/0xe0
[ 256.749495][ T37] exc_page_fault+0x58/0xc0
[ 256.754088][ T37] asm_exc_page_fault+0x2b/0x30
[ 256.758994][ T37] RIP: 0033:0x7f8173c6baa3
[ 256.763497][ T37] RSP: 002b:00007ffee7f62a30 EFLAGS: 00010246
[ 256.769655][ T37] RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
[ 256.777650][ T37] RDX: 0000001b34924000 RSI: 0000000000040000 RDI: 00007f8173fe0708
[ 256.785685][ T37] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 256.793705][ T37] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 256.801734][ T37] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffee7f62cc0
[ 256.809762][ T37]
[ 256.812794][ T37] INFO: task syz.3.553:935 blocked for more than 124 seconds.
[ 256.820325][ T37] Not tainted syzkaller #0
[ 256.825285][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 256.834017][ T37] task:syz.3.553 state:D stack:0 pid:935 tgid:935 ppid:383 flags:0x00000004
[ 256.844234][ T37] Call Trace:
[ 256.847525][ T37]
[ 256.850535][ T37] __schedule+0x1496/0x20b0
[ 256.855167][ T37] ? __sched_text_start+0x10/0x10
[ 256.860307][ T37] ? is_bpf_text_address+0x17b/0x1a0
[ 256.865657][ T37] ? __kasan_check_write+0x18/0x20
[ 256.870859][ T37] ? _raw_spin_lock_irqsave+0xc1/0x160
[ 256.876364][ T37] ? __cfi__raw_spin_lock_irqsave+0x10/0x10
[ 256.882337][ T37] ? folio_mark_accessed+0x35f/0x620
[ 256.887671][ T37] ? __cfi_stack_trace_consume_entry+0x10/0x10
[ 256.893922][ T37] schedule+0xc5/0x240
[ 256.898055][ T37] io_schedule+0x85/0x150
[ 256.902476][ T37] bit_wait_io+0x17/0xd0
[ 256.906768][ T37] __wait_on_bit+0xb6/0x2e0
[ 256.911356][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 256.916350][ T37] out_of_line_wait_on_bit+0x139/0x190
[ 256.921897][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 256.926885][ T37] ? __cfi_out_of_line_wait_on_bit+0x10/0x10
[ 256.932957][ T37] ? __cfi_wake_bit_function+0x10/0x10
[ 256.938456][ T37] do_get_write_access+0x558/0xd70
[ 256.943664][ T37] jbd2_journal_get_write_access+0x268/0x3d0
[ 256.949727][ T37] __ext4_journal_get_write_access+0x1b6/0x6a0
[ 256.955911][ T37] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 256.962786][ T37] ? __kasan_slab_alloc+0x73/0x90
[ 256.967883][ T37] ? kmem_cache_alloc_noprof+0x1e2/0x410
[ 256.973613][ T37] ext4_reserve_inode_write+0x1f6/0x2e0
[ 256.979201][ T37] __ext4_mark_inode_dirty+0xac/0x5e0
[ 256.984685][ T37] ext4_dirty_inode+0xc9/0x110
[ 256.989488][ T37] ? __cfi_ext4_dirty_inode+0x10/0x10
[ 256.994969][ T37] __mark_inode_dirty+0x251/0xc50
[ 257.000106][ T37] ? __cfi___mark_inode_dirty+0x10/0x10
[ 257.005711][ T37] ? mnt_get_write_access_file+0x1af/0x3b0
[ 257.011626][ T37] ? __kasan_check_read+0x15/0x20
[ 257.016691][ T37] file_update_time+0x1d3/0x210
[ 257.021643][ T37] ext4_page_mkwrite+0x2bf/0x1120
[ 257.026713][ T37] ? __kasan_check_write+0x18/0x20
[ 257.031984][ T37] ? folio_unlock+0x137/0x1b0
[ 257.036722][ T37] ? __cfi_ext4_page_mkwrite+0x10/0x10
[ 257.042252][ T37] ? __alloc_pages_noprof+0x35a/0x7e0
[ 257.047671][ T37] do_pte_missing+0x12c4/0x4440
[ 257.052671][ T37] ? pte_marker_clear+0x1b0/0x1b0
[ 257.057750][ T37] ? __thp_vma_allowable_orders+0x820/0x9a0
[ 257.063747][ T37] ? __cfi___pmd_alloc+0x10/0x10
[ 257.068761][ T37] ? __cfi___thp_vma_allowable_orders+0x10/0x10
[ 257.075138][ T37] handle_mm_fault+0x1189/0x1ba0
[ 257.080150][ T37] ? __cfi_handle_mm_fault+0x10/0x10
[ 257.085454][ T37] ? lock_vma_under_rcu+0x4cf/0x590
[ 257.090792][ T37] do_user_addr_fault+0x951/0x1230
[ 257.095939][ T37] ? __x64_sys_prctl+0xf0/0xf0
[ 257.100938][ T37] ? fpregs_assert_state_consistent+0xb6/0xe0
[ 257.107066][ T37] exc_page_fault+0x58/0xc0
[ 257.111645][ T37] asm_exc_page_fault+0x2b/0x30
[ 257.116534][ T37] RIP: 0033:0x7f50da66baa3
[ 257.121009][ T37] RSP: 002b:00007ffce9a72af0 EFLAGS: 00010246
[ 257.127108][ T37] RAX: 000000000003fde8 RBX: 0000000000000000 RCX: 0000000000000000
[ 257.135183][ T37] RDX: 0000001b34a24000 RSI: 0000000000040000 RDI: 00007f50da9e0708
[ 257.143232][ T37] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 257.151281][ T37] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 257.159281][ T37] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffce9a72d80
[ 257.167325][ T37]
[ 257.170419][ T37] INFO: task syz-executor:1854 blocked for more than 124 seconds.
[ 257.178229][ T37] Not tainted syzkaller #0
[ 257.183243][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 257.191990][ T37] task:syz-executor state:D stack:0 pid:1854 tgid:1854 ppid:308 flags:0x00000004
[ 257.202228][ T37] Call Trace:
[ 257.205531][ T37]
[ 257.208478][ T37] __schedule+0x1496/0x20b0
[ 257.213048][ T37] ? unwind_get_return_address+0x51/0x90
[ 257.218744][ T37] ? __sched_text_start+0x10/0x10
[ 257.223859][ T37] ? __kasan_check_write+0x18/0x20
[ 257.229006][ T37] ? _raw_spin_lock_irqsave+0xc1/0x160
[ 257.234527][ T37] ? __cfi__raw_spin_lock_irqsave+0x10/0x10
[ 257.240483][ T37] ? stack_depot_save_flags+0x38/0x800
[ 257.245992][ T37] ? kasan_save_track+0x4f/0x80
[ 257.250905][ T37] schedule+0xc5/0x240
[ 257.255021][ T37] io_schedule+0x85/0x150
[ 257.259371][ T37] bit_wait_io+0x17/0xd0
[ 257.263710][ T37] __wait_on_bit+0xb6/0x2e0
[ 257.268263][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 257.273305][ T37] out_of_line_wait_on_bit+0x139/0x190
[ 257.278805][ T37] ? __cfi_bit_wait_io+0x10/0x10
[ 257.283817][ T37] ? __cfi_out_of_line_wait_on_bit+0x10/0x10
[ 257.289882][ T37] ? __cfi_wake_bit_function+0x10/0x10
[ 257.295361][ T37] do_get_write_access+0x558/0xd70
[ 257.300572][ T37] jbd2_journal_get_write_access+0x268/0x3d0
[ 257.306597][ T37] __ext4_journal_get_write_access+0x1b6/0x6a0
[ 257.312835][ T37] ? __cfi___ext4_journal_get_write_access+0x10/0x10
[ 257.319612][ T37] __ext4_new_inode+0x11ea/0x3920
[ 257.324689][ T37] ? __cfi___ext4_new_inode+0x10/0x10
[ 257.330137][ T37] ? dquot_initialize+0x40/0x40
[ 257.335029][ T37] ? may_create+0x602/0x820
[ 257.339631][ T37] ext4_mkdir+0x40b/0xca0
[ 257.344015][ T37] ? __cfi_ext4_mkdir+0x10/0x10
[ 257.348894][ T37] ? selinux_inode_mkdir+0x26/0x30
[ 257.354102][ T37] ? bpf_lsm_inode_mkdir+0xd/0x20
[ 257.359173][ T37] ? security_inode_mkdir+0x7e/0x180
[ 257.364609][ T37] vfs_mkdir+0x591/0x810
[ 257.368898][ T37] do_mkdirat+0x240/0x530
[ 257.373464][ T37] ? strncpy_from_user+0x14f/0x280
[ 257.378627][ T37] ? __cfi_do_mkdirat+0x10/0x10
[ 257.383596][ T37] ? getname_flags+0x203/0x6b0
[ 257.388402][ T37] __x64_sys_mkdir+0x70/0x80
[ 257.393066][ T37] x64_sys_call+0x26c8/0x2ee0
[ 257.397796][ T37] do_syscall_64+0x57/0xf0
[ 257.402276][ T37] ? clear_bhb_loop+0x50/0xa0
[ 257.406993][ T37] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 257.412989][ T37] RIP: 0033:0x7f631c5cb527
[ 257.417434][ T37] RSP: 002b:00007ffe75eeb3c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 257.425990][ T37] RAX: ffffffffffffffda RBX: 00007ffe75eeb4f2 RCX: 00007f631c5cb527
[ 257.434055][ T37] RDX: 0000000010bfb42a RSI: 00000000000001c0 RDI: 00007ffe75eeb4e0
[ 257.442112][ T37] RBP: 8421084210842109 R08: 0000000000000000 R09: 0000000000000000
[ 257.450133][ T37] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000010bfb42a
[ 257.458200][ T37] R13: 00007ffe75eeb4f2 R14: 0000000000000004 R15: 00007f631c65b3a0
[ 257.466241][ T37]
[ 257.469337][ T37] NMI backtrace for cpu 0
[ 257.469352][ T37] CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 90688e1ceab05e74867d9ba7556f72450a710f26
[ 257.469375][ T37] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
[ 257.469385][ T37] Call Trace:
[ 257.469390][ T37]
[ 257.469396][ T37] __dump_stack+0x21/0x30
[ 257.469423][ T37] dump_stack_lvl+0x140/0x1c0
[ 257.469445][ T37] ? __cfi_dump_stack_lvl+0x10/0x10
[ 257.469468][ T37] ? _raw_spin_unlock_irqrestore+0x4a/0x70
[ 257.469486][ T37] dump_stack+0x19/0x20
[ 257.469507][ T37] nmi_cpu_backtrace+0x2ba/0x2d0
[ 257.469554][ T37] ? __cfi_nmi_cpu_backtrace+0x10/0x10
[ 257.469574][ T37] ? rcu_read_unlock_special+0x150/0x420
[ 257.469609][ T37] ? sched_show_task+0x371/0x530
[ 257.469631][ T37] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 257.469654][ T37] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10
[ 257.469676][ T37] nmi_trigger_cpumask_backtrace+0x142/0x2c0
[ 257.469692][ T37] arch_trigger_cpumask_backtrace+0x14/0x20
[ 257.469714][ T37] cpumask_backtrace+0x1f/0x30
[ 257.469728][ T37] watchdog+0xe45/0xf90
[ 257.469745][ T37] ? __kasan_check_write+0x18/0x20
[ 257.469764][ T37] ? __cfi_watchdog+0x10/0x10
[ 257.469781][ T37] ? __kasan_check_read+0x15/0x20
[ 257.469796][ T37] ? __kthread_parkme+0x12f/0x180
[ 257.469813][ T37] ? schedule+0xc5/0x240
[ 257.469830][ T37] kthread+0x2c4/0x360
[ 257.469847][ T37] ? __cfi_watchdog+0x10/0x10
[ 257.469864][ T37] ? __cfi_kthread+0x10/0x10
[ 257.469882][ T37] ret_from_fork+0x67/0xa0
[ 257.469918][ T37] ? __cfi_kthread+0x10/0x10
[ 257.469937][ T37] ret_from_fork_asm+0x1a/0x30
[ 257.469953][ T37]
[ 257.634009][ T37] Sending NMI from CPU 0 to CPUs 1:
[ 257.639290][ C1] NMI backtrace for cpu 1
[ 257.639304][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 90688e1ceab05e74867d9ba7556f72450a710f26
[ 257.639325][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
[ 257.639336][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20
[ 257.639365][ C1] Code: cc cc cc cc cc cc cc b8 04 24 5d a0 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 f7 41 00 55 48 89 e5 fb f4 <5d> c3 cc cc cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
[ 257.639379][ C1] RSP: 0018:ffffc900001a7e00 EFLAGS: 000002c2
[ 257.639394][ C1] RAX: ffff8881f6f00000 RBX: ffff888103669300 RCX: ffffffff85a5653d
[ 257.639407][ C1] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000073e64
[ 257.639418][ C1] RBP: ffffc900001a7e00 R08: ffff8881f6f395eb R09: 1ffff1103ede72bd
[ 257.639430][ C1] R10: dffffc0000000000 R11: ffffed103ede72be R12: 0000000000000000
[ 257.639442][ C1] R13: 1ffff110206cd260 R14: dffffc0000000000 R15: ffffffff87eceae8
[ 257.639454][ C1] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
[ 257.639468][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 257.639479][ C1] CR2: 00007f6cf0e70050 CR3: 000000010d398000 CR4: 00000000003526b0
[ 257.639495][ C1] Call Trace:
[ 257.639506][ C1]
[ 257.639516][ C1] default_idle+0x17/0x30
[ 257.639541][ C1] arch_cpu_idle+0xd/0x20
[ 257.639569][ C1] default_idle_call+0x3e/0x80
[ 257.639594][ C1] do_idle+0x2fc/0x570
[ 257.639613][ C1] ? idle_inject_timer_fn+0x80/0x80
[ 257.639634][ C1] cpu_startup_entry+0x47/0x60
[ 257.639652][ C1] start_secondary+0x12e/0x140
[ 257.639675][ C1] common_startup_64+0x13b/0x157
[ 257.639701][ C1]