INFO: task syz.1.8:5171 blocked for more than 143 seconds.
Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.8 state:D stack:24992 pid:5171 tgid:5170 ppid:5085 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
io_schedule+0x8d/0x110 kernel/sched/core.c:9043
__lock_metapage fs/jfs/jfs_metapage.c:50 [inline]
lock_metapage+0x255/0x370 fs/jfs/jfs_metapage.c:64
__get_metapage+0x513/0x1050 fs/jfs/jfs_metapage.c:639
diIAGRead+0xcb/0x140 fs/jfs/jfs_imap.c:2669
diNewExt+0x26ea/0x37e0 fs/jfs/jfs_imap.c:2237
diAllocExt fs/jfs/jfs_imap.c:1949 [inline]
diAllocAG+0xbec/0x1e50 fs/jfs/jfs_imap.c:1666
diAlloc+0x1d3/0x1760 fs/jfs/jfs_imap.c:1587
ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56
jfs_mkdir+0x1c5/0xb90 fs/jfs/namei.c:225
vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4131
do_mkdirat+0x264/0x3a0 fs/namei.c:4154
__do_sys_mkdir fs/namei.c:4174 [inline]
__se_sys_mkdir fs/namei.c:4172 [inline]
__x64_sys_mkdir+0x6e/0x80 fs/namei.c:4172
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3701575ae9
RSP: 002b:00007f3702431048 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f3701703fa0 RCX: 00007f3701575ae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000340
RBP: 00007f37015f6746 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f3701703fa0 R15: 00007fff913b9438
Showing all locks held in the system:
2 locks held by kworker/1:0/25:
1 lock held by khungtaskd/30:
#0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/0:2/58:
#0: ffff8880b943e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:567
#1: ffff8880b9428948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffffffff8e334000 (rcu_read_lock_bh){....}-{1:2}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
#2: ffffffff8e334000 (rcu_read_lock_bh){....}-{1:2}, at: rcu_read_lock_bh include/linux/rcupdate.h:833 [inline]
#2: ffffffff8e334000 (rcu_read_lock_bh){....}-{1:2}, at: keep_key_fresh drivers/net/wireguard/send.c:129 [inline]
#2: ffffffff8e334000 (rcu_read_lock_bh){....}-{1:2}, at: wg_packet_create_data_done drivers/net/wireguard/send.c:259 [inline]
#2: ffffffff8e334000 (rcu_read_lock_bh){....}-{1:2}, at: wg_packet_tx_worker+0x25f/0x810 drivers/net/wireguard/send.c:276
2 locks held by getty/4841:
#0: ffff88802aa650a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f0e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
4 locks held by syz.1.8/5171:
#0: ffff88807b3e6420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88806218b3c0 (&type->i_mutex_dir_key#9/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline]
#1: ffff88806218b3c0 (&type->i_mutex_dir_key#9/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3900
#2: ffff8880606d8920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diAlloc+0x1b7/0x1760
#3: ffff88806218a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diAllocExt fs/jfs/jfs_imap.c:1914 [inline]
#3: ffff88806218a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diAllocAG+0x2c1/0x1e50 fs/jfs/jfs_imap.c:1666
4 locks held by syz.3.278/5930:
#0: ffff888018b3a420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88806217bd00 (&type->i_mutex_dir_key#9/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline]
#1: ffff88806217bd00 (&type->i_mutex_dir_key#9/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3900
#2: ffff888022220920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diAlloc+0x1b7/0x1760
#3: ffff88806217af78 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diAllocExt fs/jfs/jfs_imap.c:1914 [inline]
#3: ffff88806217af78 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diAllocAG+0x2c1/0x1e50 fs/jfs/jfs_imap.c:1666
1 lock held by syz.3.782/7816:
2 locks held by syz.0.856/7833:
#0: ffffffff8f5d4a88 (rtnl_mutex){+.+.}-{3:3}, at: ppp_release+0x8a/0x1f0 drivers/net/ppp/ppp_generic.c:407
#1: ffffffff8e339378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#1: ffffffff8e339378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:939
1 lock held by syz.0.856/7835:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7835 Comm: syz.0.856 Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:__outw arch/x86/include/asm/shared/io.h:23 [inline]
RIP: 0010:iowrite16+0x37/0x90 lib/iomap.c:213
Code: 21 e9 fc 48 81 fb 00 00 04 00 72 0a e8 22 21 e9 fc 66 89 2b eb 59 48 81 fb 01 00 01 00 72 0d e8 0f 21 e9 fc 89 e8 89 da 66 ef 43 8b 2d 61 d2 f5 09 31 ff 89 ee e8 38 25 e9 fc 85 ed 74 2b e8
RSP: 0018:ffffc90003677928 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000000001c0b0 RCX: 0000000000040000
RDX: 000000000001c0b0 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff851c8fb0 R09: ffff88801fa38998
R10: dffffc0000000000 R11: ffffffff851de6f0 R12: dffffc0000000000
R13: 00000000000080aa R14: dffffc0000000000 R15: ffff88801f1d9400
FS: 00007fcfaa3716c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555572047608 CR3: 00000000684de000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vp_notify+0x57/0x80 drivers/virtio/virtio_pci_common.c:45
virtqueue_notify drivers/virtio/virtio_ring.c:2370 [inline]
virtqueue_kick+0x39b/0x5c0 drivers/virtio/virtio_ring.c:2393
request_entropy drivers/char/hw_random/virtio-rng.c:63 [inline]
copy_data+0x237/0x370 drivers/char/hw_random/virtio-rng.c:74
virtio_read+0x151/0x200 drivers/char/hw_random/virtio-rng.c:114
rng_get_data drivers/char/hw_random/core.c:186 [inline]
rng_dev_read+0x248/0x6d0 drivers/char/hw_random/core.c:224
do_loop_readv_writev fs/read_write.c:761 [inline]
vfs_readv+0x6c6/0xa90 fs/read_write.c:934
do_preadv fs/read_write.c:1049 [inline]
__do_sys_preadv fs/read_write.c:1099 [inline]
__se_sys_preadv fs/read_write.c:1094 [inline]
__x64_sys_preadv+0x1c7/0x2d0 fs/read_write.c:1094
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcfa9575ae9
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
RSP: 002b:00007fcfaa371048 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007fcfa9703fa0 RCX: 00007fcfa9575ae9
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 000000000000000a
RBP: 00007fcfa95f6746 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fcfa9703fa0 R15: 00007fff5c967ee8