INFO: task syz.5.304:8705 blocked for more than 143 seconds.
Not tainted 6.13.0-rc1-syzkaller-00182-gb8f52214c61a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.304 state:D stack:27088 pid:8705 tgid:8665 ppid:7850 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
d_wait_lookup fs/dcache.c:2477 [inline]
d_alloc_parallel+0xc16/0x1600 fs/dcache.c:2559
lookup_open fs/namei.c:3571 [inline]
open_last_lookups fs/namei.c:3748 [inline]
path_openat+0x9e6/0x3590 fs/namei.c:3984
do_filp_open+0x27f/0x4e0 fs/namei.c:4014
do_sys_openat2+0x13e/0x1d0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1428
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: 0033:0x7fb67ed7ff19
RSP: 002b:00007fb67bbcd058 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb67ef464e0 RCX: 00007fb67ed7ff19
RDX: 0000000000000002 RSI: 0000000020000200 RDI: ffffffffffffff9c
RBP: 00007fb67edf3986 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb67ef464e0 R15: 00007ffec549d488
Showing all locks held in the system:
3 locks held by kworker/u8:0/11:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc90000107d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000107d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8fc9d0c8 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:281
1 lock held by khungtaskd/30:
#0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
3 locks held by kworker/u8:7/2999:
3 locks held by kworker/u8:9/3518:
#0: ffff88814cd4f148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88814cd4f148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc9000c457d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000c457d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8fc9d0c8 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4215
2 locks held by getty/5574:
#0: ffff888036c090a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.5.304/8694:
1 lock held by syz.5.304/8705:
#0: ffff8880536e4180 (&type->i_mutex_dir_key#25){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:828 [inline]
#0: ffff8880536e4180 (&type->i_mutex_dir_key#25){++++}-{4:4}, at: open_last_lookups fs/namei.c:3747 [inline]
#0: ffff8880536e4180 (&type->i_mutex_dir_key#25){++++}-{4:4}, at: path_openat+0x88b/0x3590 fs/namei.c:3984
1 lock held by syz-executor/11036:
#0: ffff888022f300e0 (&type->s_umount_key#62){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888022f300e0 (&type->s_umount_key#62){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888022f300e0 (&type->s_umount_key#62){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
3 locks held by syz-executor/11720:
#0: ffff888011c360e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888011c360e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888011c360e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff888081800278 (&c->state_lock){+.+.}-{4:4}, at: __bch2_fs_stop+0xfd/0x5c0 fs/bcachefs/super.c:620
#2: ffffffff8e93cfb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#2: ffffffff8e93cfb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976
2 locks held by syz-executor/11944:
1 lock held by syz.5.642/12050:
7 locks held by syz.8.644/12090:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00182-gb8f52214c61a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
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 UID: 0 PID: 5882 Comm: kworker/0:5 Not tainted 6.13.0-rc1-syzkaller-00182-gb8f52214c61a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_hwstats_traffic_work
RIP: 0010:schedule_delayed_work include/linux/workqueue.h:817 [inline]
RIP: 0010:nsim_dev_hwstats_traffic_work+0x16d/0x1b0 drivers/net/netdevsim/hwstats.c:51
Code: e9 2a ff ff ff e8 93 85 73 fa eb 05 e8 8c 85 73 fa 48 8b 3c 24 e8 c3 69 9d 04 48 c7 c0 a0 c1 2c 8e 48 c1 e8 03 42 80 3c 30 00 <74> 0c 48 c7 c7 a0 c1 2c 8e e8 65 41 db fa 48 8b 35 3e d5 00 07 b9
RSP: 0018:ffffc900044bfb80 EFLAGS: 00000246
RAX: 1ffffffff1c59834 RBX: ffff88805e2134f8 RCX: ffffffff8bc9583e
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900044bfb00
RBP: ffffc900044bfdc0 R08: ffffc900044bfb07 R09: 1ffff92000897f60
R10: dffffc0000000000 R11: fffff52000897f61 R12: ffff88805e2134f8
R13: ffffffff8168f006 R14: dffffc0000000000 R15: ffff88805e213520
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561c84d84950 CR3: 000000002a9c4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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