INFO: task syz.0.7282:29331 blocked for more than 144 seconds.
Not tainted 6.10.0-syzkaller-12708-g2f8c4f506285 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.7282 state:D stack:27168 pid:29331 tgid:29331 ppid:28777 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
coredump_task_exit kernel/exit.c:434 [inline]
do_exit+0x3fe/0x2bb0 kernel/exit.c:834
do_group_exit+0xd3/0x2a0 kernel/exit.c:1031
get_signal+0x25fd/0x2770 kernel/signal.c:2917
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01a2d77299
RSP: 002b:00007fffb3261d18 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 00000000002d2c90 RCX: 00007f01a2d77299
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f01a2f06064
RBP: 00007f01a2f06064 R08: 00007f01a2f05f80 R09: 00007fffb3261fff
R10: 00007fffb3261e10 R11: 0000000000000246 R12: 0000000000000032
R13: 00007fffb3261e10 R14: 00007fffb3261e30 R15: 00000000002d2c5e
INFO: task syz.0.7282:29337 blocked for more than 144 seconds.
Not tainted 6.10.0-syzkaller-12708-g2f8c4f506285 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.7282 state:D stack:25664 pid:29337 tgid:29331 ppid:28777 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:417 [inline]
do_coredump+0x821/0x3de0 fs/coredump.c:574
get_signal+0x23d4/0x2770 kernel/signal.c:2902
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01a2d77299
RSP: 002b:00007f01a3bab0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007f01a2f06060 RCX: 00007f01a2d77299
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f01a2f06064
RBP: 00007f01a2f06058 R08: 00007f01a3bcd080 R09: 00007f01a3bab6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f01a2f06064
R13: 000000000000006e R14: 00007fffb3261ad0 R15: 00007fffb3261bb8
INFO: task syz.0.7282:29340 blocked for more than 144 seconds.
Not tainted 6.10.0-syzkaller-12708-g2f8c4f506285 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.7282 state:D stack:25840 pid:29340 tgid:29331 ppid:28777 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
coredump_task_exit kernel/exit.c:434 [inline]
do_exit+0x3fe/0x2bb0 kernel/exit.c:834
do_group_exit+0xd3/0x2a0 kernel/exit.c:1031
get_signal+0x25fd/0x2770 kernel/signal.c:2917
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01a2d77299
RSP: 002b:00007f01a3b8a048 EFLAGS: 00000246 ORIG_RAX: 0000000000000136
RAX: 0000000000347b80 RBX: 00007f01a2f06130 RCX: 00007f01a2d77299
RDX: 0000000000000002 RSI: 0000000020008400 RDI: 0000000000000049
RBP: 00007f01a2de48e6 R08: 0000000000000286 R09: 0000000000000000
R10: 0000000020008640 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f01a2f06130 R15: 00007fffb3261bb8
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8ddb5220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8ddb5220 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8ddb5220 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6620
3 locks held by kworker/1:2/941:
#0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90003bdfd80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276
2 locks held by getty/4980:
#0: ffff88802affe0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:3/9185:
#0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900030ffd80 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
3 locks held by kworker/u8:20/19796:
#0: ffff88802a8b4948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90003a9fd80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x1500 net/ipv6/addrconf.c:4194
3 locks held by kworker/u8:0/28364:
5 locks held by kworker/u8:1/29729:
#0: ffff8880166e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90003ec7d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffffffff8fa09790 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:594
#3: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: cleanup_net+0x503/0xbf0 net/core/net_namespace.c:630
#4: ffffffff8ddc09b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296
1 lock held by syz-executor/29894:
#0: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6644
1 lock held by syz-executor/29932:
#0: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6644
7 locks held by syz-executor/30000:
#0: ffff888029192420 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12f/0x260 fs/read_write.c:643
#1: ffff888047465c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x500 fs/kernfs/file.c:325
#2: ffff888021f0bc38 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x500 fs/kernfs/file.c:326
#3: ffffffff8efb7968 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:216
#4: ffff88801b2830e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff88801b2830e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
#4: ffff88801b2830e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
#5: ffff88801b282250 (&devlink->lock_key#69){+.+.}-{3:3}, at: nsim_drv_remove+0x4a/0x1d0 drivers/net/netdevsim/dev.c:1672
#6: ffffffff8fa1eee8 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x6f/0x6a0 drivers/net/netdevsim/netdev.c:773
4 locks held by syz-executor/30002:
#0: ffff888029192420 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12f/0x260 fs/read_write.c:643
#1: ffff88807a809488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x500 fs/kernfs/file.c:325
#2: ffff888021f0bb48 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x500 fs/kernfs/file.c:326
#3: ffffffff8efb7968 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x187/0x730 drivers/net/netdevsim/bus.c:166
1 lock held by syz.2.7453/30054:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.10.0-syzkaller-12708-g2f8c4f506285 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf4e/0x1280 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 28884 Comm: kworker/0:7 Not tainted 6.10.0-syzkaller-12708-g2f8c4f506285 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:466 [inline]
RIP: 0010:lockdep_hardirqs_on_prepare+0x171/0x420 kernel/locking/lockdep.c:4359
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 7c 01 00 00 8b 83 c0 0a 00 00 85 c0 0f 85 fc 00 00 00 <48> c7 c7 80 c8 4c 8b e8 03 3b a9 09 b8 ff ff ff ff 65 0f c1 05 be
RSP: 0018:ffffc90003517a60 EFLAGS: 00000096
RAX: 0000000000000001 RBX: ffff8880210cda00 RCX: 1ffffffff28d09fb
RDX: 0000000000000001 RSI: 0000000000000040 RDI: ffffffff94684fd8
RBP: d8b320b6967cf321 R08: 0000000000000000 R09: fffffbfff28c4cf6
R10: ffffffff946267b7 R11: 5687bab598b3e630 R12: ffff8880b923adb0
R13: 0000000000000200 R14: 0000000000000006 R15: 000000000000003d
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002029c030 CR3: 000000000db7c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
crng_make_state+0x46e/0x6d0 drivers/char/random.c:385
_get_random_bytes+0x122/0x1e0 drivers/char/random.c:398
eth_random_addr include/linux/etherdevice.h:238 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:756 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
nsim_dev_trap_report_work+0x384/0xc80 drivers/net/netdevsim/dev.c:850
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244