INFO: task kworker/0:7:5989 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:7 state:D stack:20936 pid:5989 tgid:5989 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
context_switch kernel/sched/core.c:5257 [inline]
__schedule+0x14bc/0x5030 kernel/sched/core.c:6864
__schedule_loop kernel/sched/core.c:6946 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6961
io_schedule+0x80/0xd0 kernel/sched/core.c:7793
folio_wait_bit_common+0x6b0/0xb80 mm/filemap.c:1323
folio_wait_locked include/linux/pagemap.h:1234 [inline]
gfs2_jhead_process_page+0x171/0x650 fs/gfs2/lops.c:469
gfs2_find_jhead+0xcf9/0xe40 fs/gfs2/lops.c:583
gfs2_recover_func+0x5f5/0x1c90 fs/gfs2/recovery.c:459
process_one_work+0x93a/0x15e0 kernel/workqueue.c:3261
process_scheduled_works kernel/workqueue.c:3344 [inline]
worker_thread+0x9b0/0xee0 kernel/workqueue.c:3425
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
INFO: task syz.0.76:6343 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.76 state:D stack:24248 pid:6343 tgid:6342 ppid:5824 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5257 [inline]
__schedule+0x14bc/0x5030 kernel/sched/core.c:6864
__schedule_loop kernel/sched/core.c:6946 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6961
bit_wait+0x11/0xd0 kernel/sched/wait_bit.c:240
__wait_on_bit+0xb9/0x310 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0x123/0x170 kernel/sched/wait_bit.c:67
wait_on_bit include/linux/wait_bit.h:77 [inline]
gfs2_recover_journal+0xda/0x140 fs/gfs2/recovery.c:579
init_journal+0x1977/0x2190 fs/gfs2/ops_fstype.c:794
init_inodes+0xdb/0x320 fs/gfs2/ops_fstype.c:844
gfs2_fill_super+0x1a08/0x21b0 fs/gfs2/ops_fstype.c:1250
get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1691
gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x92/0x2b0 fs/super.c:1751
fc_mount fs/namespace.c:1209 [inline]
do_new_mount_fc fs/namespace.c:3658 [inline]
do_new_mount+0x302/0xa10 fs/namespace.c:3734
do_mount fs/namespace.c:4057 [inline]
__do_sys_mount fs/namespace.c:4246 [inline]
__se_sys_mount+0x313/0x410 fs/namespace.c:4223
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8874790eea
RSP: 002b:00007f8875583e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f8875583ef0 RCX: 00007f8874790eea
RDX: 0000200000037f40 RSI: 0000200000037f80 RDI: 00007f8875583eb0
RBP: 0000200000037f40 R08: 00007f8875583ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000037f80
R13: 00007f8875583eb0 R14: 0000000000037f9e R15: 00002000000000c0
Showing all locks held in the system:
1 lock held by rcu_preempt/16:
#0: ffffffff8ddf9740 (sched_map-wait-type-override){+.+.}-{3:3}, at: sched_submit_work kernel/sched/core.c:6902 [inline]
#0: ffffffff8ddf9740 (sched_map-wait-type-override){+.+.}-{3:3}, at: schedule+0x91/0x360 kernel/sched/core.c:6960
1 lock held by khungtaskd/31:
#0: ffffffff8df3d980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8df3d980 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8df3d980 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
3 locks held by kworker/u8:4/60:
#0: ffff88813fe69948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x841/0x15e0 kernel/workqueue.c:3236
#1: ffffc9000211fb80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x868/0x15e0 kernel/workqueue.c:3237
#2: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:303
1 lock held by dhcpcd/5493:
#0: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:978
2 locks held by getty/5582:
#0: ffff88814e0b50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
2 locks held by kworker/u9:6/5842:
#0: ffff88802571c148 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x841/0x15e0 kernel/workqueue.c:3236
#1: ffffc9000432fb80 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15e0 kernel/workqueue.c:3237
11 locks held by kworker/0:5/5913:
2 locks held by kworker/0:7/5989:
#0: ffff88801c371948 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work+0x841/0x15e0 kernel/workqueue.c:3236
#1: ffffc90005457b80 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15e0 kernel/workqueue.c:3237
2 locks held by kworker/u8:27/6063:
#0: ffff88813fe69948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x841/0x15e0 kernel/workqueue.c:3236
#1: ffffffff8df3d980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#1: ffffffff8df3d980 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#1: ffffffff8df3d980 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2074 [inline]
#1: ffffffff8df3d980 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run4+0x19c/0x4a0 kernel/trace/bpf_trace.c:2118
1 lock held by syz.0.76/6343:
#0: ffff88807ab980e0 (&type->s_umount_key#71/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xaa0 fs/super.c:344
2 locks held by syz.2.610/8559:
#0: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:634 [inline]
#0: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3436
#1: ffffffff8df43438 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline]
#1: ffffffff8df43438 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730 kernel/rcu/tree_exp.h:957
2 locks held by syz.5.611/8568:
#0: ffffffff8f5bb7e8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_write+0x191/0x570 net/rfkill/core.c:1293
#1: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: cfg80211_rfkill_set_block+0x1e/0x50 net/wireless/core.c:309
2 locks held by syz.5.611/8573:
#0: ffff888079c18260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1693 [inline]
#0: ffff888079c18260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_setsockopt+0x53d/0x12c0 net/packet/af_packet.c:3818
#1: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: prb_calc_retire_blk_tmo net/packet/af_packet.c:598 [inline]
#1: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: init_prb_bdqc net/packet/af_packet.c:655 [inline]
#1: ffffffff8f2daf08 (rtnl_mutex){+.+.}-{4:4}, at: packet_set_ring+0xb6c/0x2120 net/packet/af_packet.c:4489
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xfb5/0x1000 kernel/hung_task.c:515
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 69 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
RIP: 0010:fsqr2 lib/crypto/x86/curve25519.h:778 [inline]
RIP: 0010:curve25519_ever64_base lib/crypto/x86/curve25519.h:1572 [inline]
RIP: 0010:curve25519_base_arch lib/crypto/x86/curve25519.h:1603 [inline]
RIP: 0010:curve25519_generate_public+0x973/0x3010 lib/crypto/curve25519.c:57
Code: c4 e2 fb f6 ca 66 4c 0f 38 f6 d8 4d 89 5c 24 60 66 48 0f 38 f6 d9 49 89 5c 24 68 48 8b 57 38 c4 e2 fb f6 ca 66 4c 0f 38 f6 e8 <4d> 89 6c 24 70 66 4c 0f 38 f6 f1 4d 89 74 24 78 4c 89 e7 49 89 f4
RSP: 0018:ffffc9000216f340 EFLAGS: 00000217
RAX: b350e80afb9c1c40 RBX: 427db6e7803e0de6 RCX: 39e6563b7df7ed53
RDX: 79bf3cb194ba78c8 RSI: ffffc9000216f460 RDI: ffffc9000216f460
RBP: ffffc9000216f630 R08: 58f7475febf40ae2 R09: 18fcfff4a4e55b01
R10: edc5107713d39c45 R11: 90238f37c2483cd4 R12: ffffc9000216f4e0
R13: 64d88321d3808c1a R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888125eba000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffee5eefef8 CR3: 0000000075b98000 CR4: 00000000003526f0
Call Trace:
wg_noise_handshake_create_initiation+0x201/0x750 drivers/net/wireguard/noise.c:542
wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline]
wg_packet_handshake_send_worker+0x163/0x320 drivers/net/wireguard/send.c:51
process_one_work+0x93a/0x15e0 kernel/workqueue.c:3261
process_scheduled_works kernel/workqueue.c:3344 [inline]
worker_thread+0x9b0/0xee0 kernel/workqueue.c:3425
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246