INFO: task syz-executor.3:5672 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:29312 pid:5672 tgid:5670 ppid:5087 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5c70 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:803 [inline]
lookup_slow fs/namei.c:1708 [inline]
walk_component+0x342/0x5b0 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x17f/0x770 fs/namei.c:2485
filename_lookup+0x1e5/0x5b0 fs/namei.c:2514
user_path_at_empty+0x42/0x60 fs/namei.c:2921
user_path_at include/linux/namei.h:57 [inline]
do_fchownat+0xfd/0x210 fs/open.c:815
__do_sys_chown fs/open.c:841 [inline]
__se_sys_chown fs/open.c:839 [inline]
__x64_sys_chown+0x7b/0xc0 fs/open.c:839
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fe426c7dde9
RSP: 002b:00007fe425fde0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 00007fe426dac050 RCX: 00007fe426c7dde9
RDX: 0000000000000000 RSI: 000000000000ee00 RDI: 0000000020008580
RBP: 00007fe426cca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe426dac050 R15: 00007ffd6f47e3d8
INFO: task syz-executor.3:5681 blocked for more than 145 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:29536 pid:5681 tgid:5670 ppid:5087 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5c70 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:803 [inline]
lookup_slow fs/namei.c:1708 [inline]
walk_component+0x342/0x5b0 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x17f/0x770 fs/namei.c:2485
filename_lookup+0x1e5/0x5b0 fs/namei.c:2514
user_path_at_empty+0x42/0x60 fs/namei.c:2921
user_path_at include/linux/namei.h:57 [inline]
path_setxattr+0xa5/0x1e0 fs/xattr.c:666
__do_sys_setxattr fs/xattr.c:687 [inline]
__se_sys_setxattr fs/xattr.c:683 [inline]
__x64_sys_setxattr+0xc4/0x160 fs/xattr.c:683
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fe426c7dde9
RSP: 002b:00007fe425fbd0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fe426dac120 RCX: 00007fe426c7dde9
RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000020000600
RBP: 00007fe426cca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe426dac120 R15: 00007ffd6f47e3d8
Showing all locks held in the system:
4 locks held by kworker/u8:0/10:
#0:
ffff888015ed3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1296/0x1a60 kernel/workqueue.c:3229
#1: ffffc900000f7d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x906/0x1a60 kernel/workqueue.c:3230
#2: ffffffff8f2e1650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:591
#3: ffffffff8f2f63c8 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x8c/0xae0 net/core/dev.c:11617
1 lock held by khungtaskd/29:
#0: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
1 lock held by dhcpcd/4727:
#0: ffffffff8f2f63c8 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x26e/0x1f10 net/ipv4/devinet.c:1096
2 locks held by getty/4819:
#0: ffff88802eb3a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015e02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:3/5125:
2 locks held by kworker/1:6/5195:
2 locks held by syz-executor.3/5671:
1 lock held by syz-executor.3/5672:
#0: ffff888069498188 (&type->i_mutex_dir_key#9){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:803 [inline]
#0: ffff888069498188 (&type->i_mutex_dir_key#9){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff888069498188 (&type->i_mutex_dir_key#9){.+.+}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
1 lock held by syz-executor.3/5681:
#0: ffff888069498188 (&type->i_mutex_dir_key#9){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:803 [inline]
#0: ffff888069498188 (&type->i_mutex_dir_key#9){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff888069498188 (&type->i_mutex_dir_key#9){.+.+}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
2 locks held by syz-executor.2/5801:
2 locks held by kworker/1:7/5837:
1 lock held by syz-executor.1/6306:
#0: ffffffff8f2f63c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2f63c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
2 locks held by syz-executor.4/6374:
#0: ffff888069855c10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:793 [inline]
#0: ffff888069855c10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x270 net/socket.c:658
#1: ffffffff8f2f63c8 (rtnl_mutex){+.+.}-{3:3}, at: raw_release+0x1c6/0xae0 net/can/raw.c:415
1 lock held by syz-executor.2/6402:
#0: ffffffff8f2f63c8 (rtnl_mutex){+.+.}-{3:3}, at: ppp_release+0x18a/0x250 drivers/net/ppp/ppp_generic.c:407
2 locks held by syz-executor.0/6416:
#0: ffff88807cb32678 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start+0x154/0x9b0 net/netlink/af_netlink.c:2350
#1: ffffffff8f2f63c8 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0x58c/0xe00 net/netlink/af_netlink.c:2268
1 lock held by syz-executor.3/6425:
=============================================
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 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf86/0x1210 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 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: 5837 Comm: kworker/1:7 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: wg-crypt-wg1 wg_packet_encrypt_worker
RIP: 0010:__orc_find+0xc9/0x130 arch/x86/kernel/unwind_orc.c:106
Code: 0c 32 4c 89 fa 83 e2 07 83 c2 03 38 ca 7c 04 84 c9 75 73 49 63 17 4c 89 e7 4d 8d 2c 17 4c 89 ee e8 0c 67 50 00 4d 39 ec 73 95 b2 6c 50 00 49 8d 6f fc e8 a9 6c 50 00 48 39 dd 73 99 e8 9f 6c
RSP: 0018:ffffc90000a07bd0 EFLAGS: 00000287
RAX: 0000000000000000 RBX: ffffffff8fe8bbb0 RCX: ffffffff813c8bf4
RDX: ffff88807b0f0000 RSI: ffffffff85ff988f RDI: 0000000000000006
RBP: ffffffff8fe8bbd0 R08: 0000000000000006 R09: ffffffff85ff988f
R10: ffffffff85ff98c9 R11: 0000000000000005 R12: ffffffff85ff988f
R13: ffffffff85ff98c9 R14: dffffc0000000000 R15: ffffffff8fe8bbc0
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f433d97e1f8 CR3: 000000000d57a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:240 [inline]
__kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2106 [inline]
slab_free mm/slub.c:4280 [inline]
kmem_cache_free+0x12e/0x360 mm/slub.c:4344
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1159
__kfree_skb net/core/skbuff.c:1217 [inline]
kfree_skb_reason+0x13a/0x210 net/core/skbuff.c:1252
kfree_skb include/linux/skbuff.h:1267 [inline]
ip6_mc_input+0x7ad/0xfd0 net/ipv6/ip6_input.c:589
dst_input include/net/dst.h:460 [inline]
dst_input include/net/dst.h:458 [inline]
ip6_rcv_finish+0x3a2/0x5b0 net/ipv6/ip6_input.c:79
ip_sabotage_in+0x21e/0x2a0 net/bridge/br_netfilter_hooks.c:989
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626
nf_hook.constprop.0+0x42f/0x750 include/linux/netfilter.h:269
NF_HOOK include/linux/netfilter.h:312 [inline]
ipv6_rcv+0xa4/0x680 net/ipv6/ip6_input.c:310
__netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5538
__netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5652
netif_receive_skb_internal net/core/dev.c:5738 [inline]
netif_receive_skb+0x13f/0x750 net/core/dev.c:5798
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
br_pass_frame_up+0x2fe/0x420 net/bridge/br_input.c:68
br_handle_frame_finish+0xdb2/0x1c40 net/bridge/br_input.c:216
br_nf_hook_thresh+0x303/0x410 net/bridge/br_netfilter_hooks.c:1166
br_nf_pre_routing_finish_ipv6+0x76a/0xfb0 net/bridge/br_netfilter_ipv6.c:154
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x3ce/0x8c0 net/bridge/br_netfilter_ipv6.c:184
br_nf_pre_routing+0x85e/0x15a0 net/bridge/br_netfilter_hooks.c:527
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:272 [inline]
br_handle_frame+0x9e9/0x1450 net/bridge/br_input.c:417
__netif_receive_skb_core.constprop.0+0xa16/0x4030 net/core/dev.c:5432
__netif_receive_skb_one_core+0xb1/0x1e0 net/core/dev.c:5536
__netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5652
process_backlog+0x12f/0x6f0 net/core/dev.c:5981
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6632
napi_poll net/core/dev.c:6701 [inline]
net_rx_action+0x9ad/0xf10 net/core/dev.c:6813
__do_softirq+0x218/0x8de kernel/softirq.c:554
do_softirq kernel/softirq.c:455 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:442
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
wg_packet_encrypt_worker+0x8e0/0xbb0 drivers/net/wireguard/send.c:293
process_one_work+0x9a9/0x1a60 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243