INFO: task syz-executor.0:8290 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28848 pid:8290 tgid:8286 ppid:7414 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1781/0x49d0 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:838 [inline]
blkdev_fallocate+0x233/0x550 block/fops.c:797
vfs_fallocate+0x564/0x6c0 fs/open.c:330
ksys_fallocate fs/open.c:353 [inline]
__do_sys_fallocate fs/open.c:361 [inline]
__se_sys_fallocate fs/open.c:359 [inline]
__x64_sys_fallocate+0xbd/0x110 fs/open.c:359
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f4d7f27dde9
RSP: 002b:00007f4d8007a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f4d7f3ac050 RCX: 00007f4d7f27dde9
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000005
RBP: 00007f4d7f2ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000074000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4d7f3ac050 R15: 00007ffc00f4b9a8
Showing all locks held in the system:
3 locks held by kworker/1:0/24:
#0: ffff8880b953e318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff8880b952a758 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1051
1 lock held by khungtaskd/29:
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:2/32:
2 locks held by getty/4814:
#0: ffff88802eb1a0a0 (&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:2201
5 locks held by kworker/0:7/5182:
#0: ffff888017e9dd48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888017e9dd48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc900047ffd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc900047ffd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffff888023452190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888023452190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x50f0 drivers/usb/core/hub.c:5811
#3: ffff8880b943e318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#4: ffff8880b9428988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: update_rq_clock_task kernel/sched/core.c:726 [inline]
#4: ffff8880b9428988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: update_rq_clock+0x22b/0x8a0 kernel/sched/core.c:770
1 lock held by syz-executor.1/8243:
1 lock held by syz-executor.0/8290:
#0: ffff88801d13fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d13fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.3/8422:
#0: ffff88801d13fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d13fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.1/8909:
#0: ffff88801d13fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d13fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
1 lock held by syz-executor.3/8971:
#0: ffff88801d13fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:848 [inline]
#0: ffff88801d13fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf2/0x7c0 mm/readahead.c:225
2 locks held by syz-executor.4/9888:
#0: ffff88805b53fa10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:793 [inline]
#0: ffff88805b53fa10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline]
#0: ffff88805b53fa10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1421
#1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#1: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
2 locks held by syz-executor.2/9900:
2 locks held by syz-executor.1/9918:
3 locks held by syz-executor.3/9927:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5182 Comm: kworker/0:7 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: mld mld_ifc_work
RIP: 0010:match_held_lock+0x10/0xb0 kernel/locking/lockdep.c:5203
Code: cc cc cc cc e8 11 f9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 53 bd 01 00 00 00 48 39 77 10 74 67 48 89 fb <81> 7f 20 00 00 20 00 72 59 48 8b 46 08 48 85 c0 75 11 31 ed 48 89
RSP: 0018:ffffc90000007060 EFLAGS: 00000083
RAX: 0000000000000007 RBX: ffff88807c236500 RCX: 0000000080000101
RDX: ffff88807c235a00 RSI: ffffffff8e132020 RDI: ffff88807c236500
RBP: 0000000000000001 R08: ffffffff89472ea6 R09: ffffc900000073f0
R10: ffffc900000073e0 R11: fffff52000000e4a R12: 0000000000000246
R13: ffff88807c235a00 R14: 00000000ffffffff R15: ffffffff8e132020
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9534ad66e4 CR3: 000000004e4f0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_is_held kernel/locking/lockdep.c:5495 [inline]
lock_is_held_type+0xa9/0x190 kernel/locking/lockdep.c:5825
__in6_dev_get include/net/addrconf.h:324 [inline]
ip6_ignore_linkdown include/net/addrconf.h:415 [inline]
find_match+0xe3/0xbe0 net/ipv6/route.c:743
__find_rr_leaf+0x275/0x8e0 net/ipv6/route.c:831
find_rr_leaf net/ipv6/route.c:852 [inline]
rt6_select net/ipv6/route.c:896 [inline]
fib6_table_lookup+0x413/0xbb0 net/ipv6/route.c:2193
ip6_pol_route+0x273/0x15d0 net/ipv6/route.c:2229
pol_lookup_func include/net/ip6_fib.h:614 [inline]
fib6_rule_lookup+0x58c/0x790 net/ipv6/fib6_rules.c:116
ip6_route_input_lookup net/ipv6/route.c:2298 [inline]
ip6_route_input+0x859/0xd90 net/ipv6/route.c:2594
ip6_rcv_finish+0x144/0x180 net/ipv6/ip6_input.c:77
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5538 [inline]
__netif_receive_skb+0x1ea/0x6a0 net/core/dev.c:5652
process_backlog+0x39d/0x7a0 net/core/dev.c:5981
__napi_poll+0xcb/0x490 net/core/dev.c:6632
napi_poll net/core/dev.c:6701 [inline]
net_rx_action+0x7bb/0x1090 net/core/dev.c:6813
__do_softirq+0x2bc/0x943 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:820 [inline]
__dev_queue_xmit+0x15fd/0x3b10 net/core/dev.c:4362
dev_queue_xmit include/linux/netdevice.h:3091 [inline]
neigh_hh_output include/net/neighbour.h:526 [inline]
neigh_output include/net/neighbour.h:540 [inline]
ip6_finish_output2+0xfc0/0x1670 net/ipv6/ip6_output.c:137
ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:222
NF_HOOK+0x9e/0x430 include/linux/netfilter.h:314
mld_sendpack+0x838/0xda0 net/ipv6/mcast.c:1818
mld_send_cr net/ipv6/mcast.c:2119 [inline]
mld_ifc_work+0x7d6/0xd90 net/ipv6/mcast.c:2650
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243