INFO: task syz-executor:5822 blocked for more than 146 seconds.
Not tainted 6.15.0-syzkaller-03589-gfeacb1774bd5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21768 pid:5822 tgid:5822 ppid:1 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5392 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6781
__schedule_loop kernel/sched/core.c:6859 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6874
io_schedule+0x81/0xe0 kernel/sched/core.c:7719
folio_wait_bit_common+0x6b0/0xb90 mm/filemap.c:1317
__folio_lock mm/filemap.c:1664 [inline]
folio_lock include/linux/pagemap.h:1137 [inline]
__filemap_get_folio+0x139/0xaf0 mm/filemap.c:1917
truncate_inode_pages_range+0x3ed/0xda0 mm/truncate.c:388
evict+0x517/0x9c0 fs/inode.c:812
dispose_list fs/inode.c:852 [inline]
evict_inodes+0x636/0x6c0 fs/inode.c:906
generic_shutdown_super+0x9a/0x2c0 fs/super.c:628
kill_block_super+0x44/0x90 fs/super.c:1760
deactivate_locked_super+0xbc/0x130 fs/super.c:474
cleanup_mnt+0x425/0x4c0 fs/namespace.c:1432
task_work_run+0x1d4/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8697f8fc97
RSP: 002b:00007ffeb7380ca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f869801089d RCX: 00007f8697f8fc97
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeb7380d60
RBP: 00007ffeb7380d60 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffeb7381df0
R13: 00007f869801089d R14: 00000000000b0563 R15: 00007ffeb7381e30
Showing all locks held in the system:
4 locks held by kworker/0:0/9:
2 locks held by kworker/u8:0/12:
#0: ffff88801a481148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a481148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90000117bc0 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90000117bc0 ((reaper_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
1 lock held by khungtaskd/31:
#0: ffffffff8e13ccc0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e13ccc0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e13ccc0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
3 locks held by kworker/R-ipv6_/3163:
#0: ffff88814c7b4948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88814c7b4948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000bc87ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000bc87ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffffff8f505988 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#2: ffffffff8f505988 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4738
5 locks held by kworker/R-bat_e/3393:
1 lock held by klogd/5181:
2 locks held by udevd/5192:
1 lock held by crond/5566:
2 locks held by getty/5583:
#0: ffff888034ef20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900036bb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
3 locks held by syz-executor/5810:
1 lock held by syz-executor/5821:
1 lock held by syz-executor/5822:
#0: ffff88802f7ec0e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff88802f7ec0e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff88802f7ec0e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
2 locks held by kworker/0:3/5823:
2 locks held by syz-executor/5830:
1 lock held by syz-executor/5836:
2 locks held by udevd/5891:
#0: ffff88807f5b8428 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff88807db60fd8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline]
#1: ffff88807db60fd8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: lock_rename fs/namei.c:3272 [inline]
#1: ffff88807db60fd8 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: do_renameat2+0x3dd/0xc50 fs/namei.c:5223
3 locks held by kworker/0:4/5894:
5 locks held by kworker/1:5/5896:
3 locks held by kworker/0:6/5930:
#0: ffff88801a478d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a478d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90002e87bc0 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90002e87bc0 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffffff8f834f08 (ovs_mutex){+.+.}-{4:4}, at: ovs_lock net/openvswitch/datapath.c:108 [inline]
#2: ffffffff8f834f08 (ovs_mutex){+.+.}-{4:4}, at: ovs_dp_masks_rebalance+0x2f/0xe0 net/openvswitch/datapath.c:2531
2 locks held by udevd/6009:
#0: ffff88807f5b8428 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
#1: ffff88807db60fd8 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88807db60fd8 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: open_last_lookups fs/namei.c:3804 [inline]
#1: ffff88807db60fd8 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: path_openat+0x8da/0x3830 fs/namei.c:4043
2 locks held by udevd/6142:
2 locks held by udevd/6146:
4 locks held by kworker/u8:9/7535:
3 locks held by kworker/u8:10/7537:
2 locks held by kworker/u8:11/7539:
#0: ffff88801a481148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a481148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc90005247bc0 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90005247bc0 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
4 locks held by kworker/u8:12/7543:
3 locks held by kworker/u8:13/7545:
4 locks held by kworker/u8:14/7547:
4 locks held by kworker/u8:15/7549:
5 locks held by udevd/12601:
2 locks held by kworker/0:5/19880:
3 locks held by kworker/0:7/19886:
3 locks held by kworker/0:8/19889:
#0: ffff88801a478d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a478d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000b3bfbc0 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000b3bfbc0 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffffff8f834f08 (ovs_mutex){+.+.}-{4:4}, at: ovs_lock net/openvswitch/datapath.c:108 [inline]
#2: ffffffff8f834f08 (ovs_mutex){+.+.}-{4:4}, at: ovs_dp_masks_rebalance+0x2f/0xe0 net/openvswitch/datapath.c:2531
3 locks held by kworker/0:10/19929:
#0: ffff88801a478d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a478d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9000baffbc0 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000baffbc0 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
#2: ffffffff8f834f08 (ovs_mutex){+.+.}-{4:4}, at: ovs_lock net/openvswitch/datapath.c:108 [inline]
#2: ffffffff8f834f08 (ovs_mutex){+.+.}-{4:4}, at: ovs_dp_masks_rebalance+0x2f/0xe0 net/openvswitch/datapath.c:2531
2 locks held by syz-executor/29504:
2 locks held by kworker/u8:1/29851:
#0: ffff88801a481148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801a481148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
#1: ffffc9001cc17bc0 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9001cc17bc0 (connector_reaper_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
6 locks held by syz.8.9121/32672:
2 locks held by rm/403:
4 locks held by syz-executor/406:
1 lock held by kworker/u8:2/408:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-syzkaller-03589-gfeacb1774bd5 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:437
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 3393 Comm: kworker/R-bat_e Not tainted 6.15.0-syzkaller-03589-gfeacb1774bd5 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: bat_events batadv_tt_purge
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5604 [inline]
RIP: 0010:lock_is_held_type+0xa8/0x190 kernel/locking/lockdep.c:5943
Code: 3b 07 41 83 bd e8 0a 00 00 00 7e 48 4c 89 eb 48 81 c3 f0 0a 00 00 45 31 ff 49 83 ff 31 73 24 48 89 df 4c 89 f6 e8 78 02 00 00 <85> c0 75 2a 49 ff c7 49 63 85 e8 0a 00 00 48 83 c3 28 49 39 c7 7c
RSP: 0018:ffffc90000a07678 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffff888030cb8b40 RCX: 654ecd62daa77f00
RDX: ffff888030cb8000 RSI: ffffffff8e13ccc0 RDI: ffff888030cb8b40
RBP: 00000000ffffffff R08: ffffc90000a079c0 R09: ffffc90000a079d0
R10: dffffc0000000000 R11: fffff52000140f06 R12: 0000000000000246
R13: ffff888030cb8000 R14: ffffffff8e13ccc0 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff888125d8c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faa91e059c4 CR3: 000000003109e000 CR4: 0000000000350ef0
Call Trace:
__in6_dev_get include/net/addrconf.h:347 [inline]
ip6_ignore_linkdown include/net/addrconf.h:443 [inline]
find_match+0xf1/0xc90 net/ipv6/route.c:781
__find_rr_leaf+0x23a/0x6d0 net/ipv6/route.c:869
find_rr_leaf net/ipv6/route.c:890 [inline]
rt6_select net/ipv6/route.c:934 [inline]
fib6_table_lookup+0x39f/0xa80 net/ipv6/route.c:2230
ip6_pol_route+0x222/0x1180 net/ipv6/route.c:2266
pol_lookup_func include/net/ip6_fib.h:616 [inline]
fib6_rule_lookup+0x52f/0x6f0 net/ipv6/fib6_rules.c:120
ip6_route_input_lookup net/ipv6/route.c:2335 [inline]
ip6_route_input+0x6ce/0xa50 net/ipv6/route.c:2631
ip6_rcv_finish+0x141/0x2d0 net/ipv6/ip6_input.c:77
ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:993
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x206/0x3a0 include/linux/netfilter.h:312
__netif_receive_skb_one_core net/core/dev.c:5887 [inline]
__netif_receive_skb+0xd3/0x380 net/core/dev.c:6000
netif_receive_skb_internal net/core/dev.c:6086 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6145
NF_HOOK+0xa0/0x390 include/linux/netfilter.h:315
br_handle_frame_finish+0x1489/0x1950 net/bridge/br_input.c:-1
br_nf_hook_thresh+0x3c2/0x490 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x948/0xd00 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x37e/0x6b0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:282 [inline]
br_handle_frame+0x982/0x14c0 net/bridge/br_input.c:433
__netif_receive_skb_core+0x10e1/0x4180 net/core/dev.c:5773
__netif_receive_skb_one_core net/core/dev.c:5885 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6000
process_backlog+0x60e/0x14f0 net/core/dev.c:6352
__napi_poll+0xc7/0x480 net/core/dev.c:7324
napi_poll net/core/dev.c:7388 [inline]
net_rx_action+0x6ea/0xdf0 net/core/dev.c:7510
handle_softirqs+0x286/0x870 kernel/softirq.c:579
do_softirq+0xec/0x180 kernel/softirq.c:480
__local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2250 [inline]
batadv_tt_purge+0x4d1/0x9e0 net/batman-adv/translation-table.c:3510
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
rescuer_thread+0x53c/0xdd0 kernel/workqueue.c:3498
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 19573 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:56:5d:63:f9:10:ba, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:56:5d:63:f9:10:ba, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:56:5d:63:f9:10:ba, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:56:5d:63:f9:10:ba, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:56:5d:63:f9:10:ba, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:56:5d:63:f9:10:ba, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:56:5d:63:f9:10:ba, vlan:0)