INFO: task syz-executor.3:9797 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.3 state:D stack:26448 pid:9797 tgid:9796 ppid:7064 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: 0033:0x7fc925c7dda9
RSP: 002b:00007fc9269bc0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fc925dabf80 RCX: 00007fc925c7dda9
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000005
RBP: 00007fc925cca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000400 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc925dabf80 R15: 00007fffb69b5fb8
Showing all locks held in the system:
2 locks held by kworker/u8:1/11:
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
2 locks held by getty/4811:
#0: ffff88802a7c00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f1e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
4 locks held by syz-executor.0/5099:
#0: ffff8880b943e318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9428988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff888028a23858 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff888028a23858 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0x1ba/0x300 mm/pgtable-generic.c:373
#3: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#3: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#3: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: page_ext_get+0x20/0x2a0 mm/page_ext.c:508
3 locks held by kworker/1:3/5137:
#0: ffff88801aa98548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff88801aa98548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc9000497fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc9000497fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffff888023912190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888023912190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x50f0 drivers/usb/core/hub.c:5811
3 locks held by kworker/1:8/5197:
#0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc90004d07d00 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc90004d07d00 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#2: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.4/7515:
1 lock held by syz-executor.3/9797:
#0: ffff88801d0aa040 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:838 [inline]
#0: ffff88801d0aa040 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x233/0x550 block/fops.c:797
3 locks held by syz-executor.4/10911:
1 lock held by syz-executor.3/12247:
#0: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8e1373b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
2 locks held by syz-executor.0/12269:
1 lock held by syz-executor.2/12270:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10537 Comm: syz-executor.2 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xdc/0x530 kernel/locking/lockdep.c:5725
Code: 08 0f 83 eb 02 00 00 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 e8 0d 86 8f be 08 00 00 00 e8 8c 5e 83 00 48 0f a3 1d ac 74 14 0e <73> 0d e8 bd cf 09 00 84 c0 0f 84 c2 02 00 00 48 c7 c0 0c 41 86 8f
RSP: 0018:ffffc90000a07ce0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81719934
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f860de8
RBP: ffffc90000a07e28 R08: ffffffff8f860def R09: 1ffffffff1f0c1bd
R10: dffffc0000000000 R11: fffffbfff1f0c1be R12: 1ffff92000140fa4
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000140fc8
FS: 000055556d897480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe63ddfdfc CR3: 0000000034578000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
seqcount_lockdep_reader_access+0x13f/0x220 include/linux/seqlock.h:73
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
____nf_conntrack_find net/netfilter/nf_conntrack_core.c:744 [inline]
__nf_conntrack_find_get+0xb8/0x670 net/netfilter/nf_conntrack_core.c:780
resolve_normal_ct net/netfilter/nf_conntrack_core.c:1832 [inline]
nf_conntrack_in+0x77e/0x1880 net/netfilter/nf_conntrack_core.c:1996
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook_slow_list+0x1f8/0x460 net/netfilter/core.c:665
NF_HOOK_LIST include/linux/netfilter.h:350 [inline]
ip_sublist_rcv+0x9a4/0xab0 net/ipv4/ip_input.c:637
ip_list_rcv+0x42b/0x480 net/ipv4/ip_input.c:674
__netif_receive_skb_list_ptype net/core/dev.c:5581 [inline]
__netif_receive_skb_list_core+0x95a/0x980 net/core/dev.c:5629
__netif_receive_skb_list net/core/dev.c:5681 [inline]
netif_receive_skb_list_internal+0xa62/0xe70 net/core/dev.c:5773
gro_normal_list include/net/gro.h:438 [inline]
napi_complete_done+0x310/0x8e0 net/core/dev.c:6113
virtqueue_napi_complete drivers/net/virtio_net.c:465 [inline]
virtnet_poll+0xd91/0x18f0 drivers/net/virtio_net.c:2211
__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
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:247
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:___slab_alloc+0x951/0x1260
Code: 50 00 00 00 00 9c 8f 44 24 50 f7 44 24 50 00 02 00 00 0f 85 34 07 00 00 f7 c3 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 58 0f 85 fc 07 00 00 4c 89 e8 48 83 c4 60 5b 41 5c 41
RSP: 0018:ffffc9000337f5c8 EFLAGS: 00000206
RAX: 93ab46cfd7bf9600 RBX: 0000000000000282 RCX: ffffffff944a6603
RDX: dffffc0000000000 RSI: ffffffff8baac1e0 RDI: ffffffff8bfdff00
RBP: 0000000000000001 R08: ffffffff8f860def R09: 1ffffffff1f0c1bd
R10: dffffc0000000000 R11: fffffbfff1f0c1be R12: ffff8880186a5780
R13: ffff88804cfd2a00 R14: ffff8880b9546610 R15: 00000000ffffffff
__slab_alloc mm/slub.c:3610 [inline]
__slab_alloc_node mm/slub.c:3663 [inline]
slab_alloc_node mm/slub.c:3835 [inline]
kmem_cache_alloc_node+0x24a/0x380 mm/slub.c:3888
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:658
alloc_skb include/linux/skbuff.h:1318 [inline]
nlmsg_new include/net/netlink.h:1010 [inline]
audit_buffer_alloc kernel/audit.c:1794 [inline]
audit_log_start+0x175/0x9e0 kernel/audit.c:1912
common_lsm_audit+0xdd/0x1b30 security/lsm_audit.c:449
smack_log+0x421/0x540 security/smack/smack_access.c:383
smk_tskacc+0x300/0x370 security/smack/smack_access.c:253
smack_inode_getattr+0x203/0x280 security/smack/smack_lsm.c:1280
security_inode_getattr+0xd8/0x130 security/security.c:2263
vfs_getattr+0x45/0x430 fs/stat.c:173
vfs_fstat fs/stat.c:198 [inline]
vfs_fstatat+0xd6/0x190 fs/stat.c:300
__do_sys_newfstatat fs/stat.c:468 [inline]
__se_sys_newfstatat fs/stat.c:462 [inline]
__x64_sys_newfstatat+0x117/0x190 fs/stat.c:462
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f5454c7c84a
Code: 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 0b 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b0 ff ff ff f7
RSP: 002b:00007ffe63ddfd28 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5454c7c84a
RDX: 00007ffe63ddfd30 RSI: 00007f5454d04707 RDI: 0000000000000003
RBP: 00007ffe63ddfd30 R08: 0000000000000000 R09: 00007f5455a450b0
R10: 0000000000001000 R11: 0000000000000206 R12: 00007ffe63de0f60
R13: 00007f5454cc93b9 R14: 0000000000090bba R15: 0000000000000013