INFO: task syz-executor.2:31827 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:29104 pid:31827 ppid:15556 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_timeout+0x276/0x2b0 kernel/time/timer.c:2143
___down_common+0x2bf/0x430 kernel/locking/semaphore.c:225
__down_common kernel/locking/semaphore.c:246 [inline]
__down+0x20/0x30 kernel/locking/semaphore.c:254
down+0x74/0xa0 kernel/locking/semaphore.c:63
console_lock+0x2c/0x80 kernel/printk/printk.c:2600
do_fb_ioctl+0x21e/0x750 drivers/video/fbdev/core/fbmem.c:1121
fb_ioctl+0xeb/0x150 drivers/video/fbdev/core/fbmem.c:1204
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd446c8c169
RSP: 002b:00007fd447994168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd446dac050 RCX: 00007fd446c8c169
RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000003
RBP: 00007fd446ce7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffba679a8f R14: 00007fd447994300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.5:31824 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27824 pid:31824 ppid:13711 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_timeout+0x276/0x2b0 kernel/time/timer.c:2143
___down_common+0x2bf/0x430 kernel/locking/semaphore.c:225
__down_common kernel/locking/semaphore.c:246 [inline]
__down+0x20/0x30 kernel/locking/semaphore.c:254
down+0x74/0xa0 kernel/locking/semaphore.c:63
console_lock+0x2c/0x80 kernel/printk/printk.c:2600
do_fb_ioctl+0x21e/0x750 drivers/video/fbdev/core/fbmem.c:1121
fb_ioctl+0xeb/0x150 drivers/video/fbdev/core/fbmem.c:1204
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f04c808c169
RSP: 002b:00007f04c8dd9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f04c81abf80 RCX: 00007f04c808c169
RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000003
RBP: 00007f04c80e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeea3cdbcf R14: 00007f04c8dd9300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.0:31826 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27696 pid:31826 ppid:14943 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_timeout+0x276/0x2b0 kernel/time/timer.c:2143
___down_common+0x2bf/0x430 kernel/locking/semaphore.c:225
__down_common kernel/locking/semaphore.c:246 [inline]
__down+0x20/0x30 kernel/locking/semaphore.c:254
down+0x74/0xa0 kernel/locking/semaphore.c:63
console_lock+0x2c/0x80 kernel/printk/printk.c:2600
do_fb_ioctl+0x21e/0x750 drivers/video/fbdev/core/fbmem.c:1121
fb_ioctl+0xeb/0x150 drivers/video/fbdev/core/fbmem.c:1204
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbe83e8c169
RSP: 002b:00007fbe84b89168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbe83fabf80 RCX: 00007fbe83e8c169
RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000003
RBP: 00007fbe83ee7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc0ac873f R14: 00007fbe84b89300 R15: 0000000000022000
</TASK>
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c7985b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c7982b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c7991c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x390 kernel/locking/lockdep.c:6559
1 lock held by kcompactd0/31:
3 locks held by udevd/4456:
2 locks held by getty/4753:
#0: ffff88802c38a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
2 locks held by kworker/u4:15/5727:
2 locks held by kworker/0:9/22230:
2 locks held by syz-executor.3/31810:
4 locks held by syz-executor.3/31939:
#0: ffff888027f4a460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff88803c8e9888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff8880208f0ae8 (kn->active#52){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d8009a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x170/0x690 drivers/net/netdevsim/bus.c:160
4 locks held by syz-executor.0/31950:
#0: ffff888027f4a460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff8880b137e888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff8880208f0bd0 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d8009a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
7 locks held by syz-executor.5/31952:
#0: ffff888027f4a460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff8880b134cc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff8880208f0bd0 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d8009a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
#4: ffff88807cb910e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#4: ffff88807cb910e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88807cb910e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
#5: ffff888081842250 (&devlink->lock_key#16){+.+.}-{3:3}, at: nsim_drv_remove+0x4a/0x1d0 drivers/net/netdevsim/dev.c:1675
#6: ffffffff8c7a4480 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x6a0 kernel/rcu/tree.c:3997
4 locks held by syz-executor.2/31954:
#0: ffff888027f4a460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff8880b1690888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff8880208f0bd0 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d8009a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4456 Comm: udevd Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:stack_access_ok+0x10/0x1d0 arch/x86/kernel/unwind_orc.c:361
Code: eb c4 48 89 ef e8 b0 93 9e 00 eb de 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 41 54 <49> 89 d4 48 89 fa 55 48 c1 ea 03 48 89 f5 53 48 89 fb 48 83 ec 08
RSP: 0018:ffffc900001df530 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff8f88cdca
RDX: 0000000000000008 RSI: ffffc900001e0010 RDI: ffffc900001df5c0
RBP: ffffc900001df608 R08: ffffffff8f88cdce R09: ffffc900001e0010
R10: ffffc900001df5c0 R11: 0000000000094001 R12: ffffc900001df610
R13: ffffc900001df5c0 R14: ffffc900001e0018 R15: ffffc900001df5f4
FS: 00007f5692f35c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562b1bfbaaf5 CR3: 0000000029762000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
deref_stack_reg arch/x86/kernel/unwind_orc.c:375 [inline]
unwind_next_frame+0xacc/0x1e30 arch/x86/kernel/unwind_orc.c:557
arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:521
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:162 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807
slab_free mm/slub.c:3786 [inline]
kmem_cache_free+0xe9/0x480 mm/slub.c:3808
kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:958
__kfree_skb net/core/skbuff.c:1016 [inline]
kfree_skb_reason+0x12b/0x210 net/core/skbuff.c:1051
tun_net_xmit+0xcfb/0x1780 drivers/net/tun.c:1152
__netdev_start_xmit include/linux/netdevice.h:4915 [inline]
netdev_start_xmit include/linux/netdevice.h:4929 [inline]
xmit_one net/core/dev.c:3578 [inline]
dev_hard_start_xmit+0x187/0x700 net/core/dev.c:3594
sch_direct_xmit+0x1a3/0xc30 net/sched/sch_generic.c:342
__dev_xmit_skb net/core/dev.c:3805 [inline]
__dev_queue_xmit+0x14d6/0x3c10 net/core/dev.c:4210
dev_queue_xmit include/linux/netdevice.h:3085 [inline]
br_dev_queue_push_xmit+0x26e/0x7b0 net/bridge/br_forward.c:53
br_nf_dev_queue_xmit+0x5f9/0x1e80 net/bridge/br_netfilter_hooks.c:810
NF_HOOK include/linux/netfilter.h:303 [inline]
NF_HOOK include/linux/netfilter.h:297 [inline]
br_nf_post_routing+0x9f8/0x1200 net/bridge/br_netfilter_hooks.c:856
nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline]
nf_hook_slow+0xc9/0x1f0 net/netfilter/core.c:626
nf_hook+0x431/0x730 include/linux/netfilter.h:258
NF_HOOK include/linux/netfilter.h:301 [inline]
br_forward_finish+0xd8/0x130 net/bridge/br_forward.c:66
br_nf_hook_thresh+0x2fb/0x3f0 net/bridge/br_netfilter_hooks.c:1048
br_nf_forward_finish+0x6df/0xa30 net/bridge/br_netfilter_hooks.c:567
NF_HOOK include/linux/netfilter.h:303 [inline]
NF_HOOK include/linux/netfilter.h:297 [inline]
br_nf_forward_ip net/bridge/br_netfilter_hooks.c:637 [inline]
br_nf_forward_ip+0xb83/0x13c0 net/bridge/br_netfilter_hooks.c:578
nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline]
nf_hook_slow+0xc9/0x1f0 net/netfilter/core.c:626
nf_hook+0x431/0x730 include/linux/netfilter.h:258
NF_HOOK include/linux/netfilter.h:301 [inline]
__br_forward+0x19a/0x570 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver+0x350/0x450 net/bridge/br_forward.c:189
br_flood+0x168/0x470 net/bridge/br_forward.c:233
br_handle_frame_finish+0xf89/0x1de0 net/bridge/br_input.c:210
br_nf_hook_thresh+0x2fb/0x3f0 net/bridge/br_netfilter_hooks.c:1048
br_nf_pre_routing_finish_ipv6+0x695/0xf30 net/bridge/br_netfilter_ipv6.c:148
NF_HOOK include/linux/netfilter.h:303 [inline]
br_nf_pre_routing_ipv6+0x41b/0x830 net/bridge/br_netfilter_ipv6.c:178
br_nf_pre_routing+0xda4/0x1520 net/bridge/br_netfilter_hooks.c:508
nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:272 [inline]
br_handle_frame+0x9cb/0x1320 net/bridge/br_input.c:416
__netif_receive_skb_core+0xa10/0x3900 net/core/dev.c:5385
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5489
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5605
process_backlog+0x13e/0x6d0 net/core/dev.c:5933
__napi_poll+0xb3/0x520 net/core/dev.c:6496
napi_poll net/core/dev.c:6563 [inline]
net_rx_action+0x8e4/0xd00 net/core/dev.c:6696
__do_softirq+0x1d4/0x905 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:kasan_quarantine_put+0x9f/0x220 mm/kasan/quarantine.c:243
Code: 10 48 81 fb 00 00 10 00 48 89 58 10 77 78 4d 85 ed 75 6c 9c 58 f6 c4 02 0f 85 23 01 00 00 4d 85 ed b8 01 00 00 00 74 01 fb 5b <5d> 41 5c 41 5d 41 5e c3 e8 94 8e b3 ff 48 c7 c3 c0 81 03 00 e8 c8
RSP: 0018:ffffc9000317fd10 EFLAGS: 00000206
RAX: 0000000000000001 RBX: ffffc9000317fd90 RCX: 1ffffffff1cf5869
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88809ff14400 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1cf5e72 R11: 0000000000094001 R12: ffff888140008780
R13: 0000000000000200 R14: ffffc9000317fd98 R15: ffff88809ff14400
kasan_slab_free include/linux/kasan.h:162 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807
slab_free mm/slub.c:3786 [inline]
kmem_cache_free+0xe9/0x480 mm/slub.c:3808
putname fs/namei.c:273 [inline]
putname+0x102/0x140 fs/namei.c:259
do_unlinkat+0x12d/0x680 fs/namei.c:4416
__do_sys_unlink fs/namei.c:4441 [inline]
__se_sys_unlink fs/namei.c:4439 [inline]
__x64_sys_unlink+0xca/0x110 fs/namei.c:4439
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5692b17da7
Code: f0 ff ff 73 01 c3 48 8b 0d 7e 90 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007fff3f8bca08 EFLAGS: 00000202 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5692b17da7
RDX: 0000000000000000 RSI: 00000000a0b1b200 RDI: 0000562b1bfc60d8
RBP: 0000562b1da70d00 R08: 00000000a0b290a4 R09: 00007fff3f996080
R10: 00007fff3f996090 R11: 0000000000000202 R12: 0000000000000bb8
R13: 0000562b1da4f710 R14: 0000000000000000 R15: 0000000000000000
</TASK>