INFO: task syz-executor.0:8811 blocked for more than 143 seconds.
Not tainted 6.9.0-rc6-syzkaller-00005-gb947cc5bf6d7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28336 pid:8811 tgid:8805 ppid:7945 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1796/0x4a00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:830 [inline]
lock_rename fs/namei.c:3066 [inline]
do_renameat2+0x62c/0x13f0 fs/namei.c:4972
__do_sys_rename fs/namei.c:5084 [inline]
__se_sys_rename fs/namei.c:5082 [inline]
__x64_sys_rename+0x86/0xa0 fs/namei.c:5082
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc04c07dea9
RSP: 002b:00007fc04cd160c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fc04c1ac050 RCX: 00007fc04c07dea9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000020000080
RBP: 00007fc04c0ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc04c1ac050 R15: 00007ffda070a588
INFO: task syz-executor.0:8814 blocked for more than 143 seconds.
Not tainted 6.9.0-rc6-syzkaller-00005-gb947cc5bf6d7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27320 pid:8814 tgid:8805 ppid:7945 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1796/0x4a00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:795 [inline]
open_last_lookups fs/namei.c:3563 [inline]
path_openat+0x7d3/0x3240 fs/namei.c:3796
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_open fs/open.c:1429 [inline]
__se_sys_open fs/open.c:1425 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1425
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc04c07dea9
RSP: 002b:00007fc04bbff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fc04c1ac120 RCX: 00007fc04c07dea9
RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000000
RBP: 00007fc04c0ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc04c1ac120 R15: 00007ffda070a588
Showing all locks held in the system:
3 locks held by kworker/u8:0/10:
5 locks held by kworker/u8:1/11:
1 lock held by khungtaskd/29:
#0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
4 locks held by kworker/u8:8/2394:
#0: ffff888015ecb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff888015ecb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3335
#1:
ffffc9000a09fd00 (
net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3335
#2: ffffffff8f587d90 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:591
#3: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#3: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
2 locks held by getty/4836:
#0: ffff88802a0b30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.0/8806:
2 locks held by syz-executor.0/8811:
#0: ffff8880660ca420 (sb_writers#35){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88805eff8188 (&type->i_mutex_dir_key#24/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
#1: ffff88805eff8188 (&type->i_mutex_dir_key#24/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3066 [inline]
#1: ffff88805eff8188 (&type->i_mutex_dir_key#24/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:4972
2 locks held by syz-executor.0/8814:
#0: ffff8880660ca420 (sb_writers#35){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88805eff8188 (&type->i_mutex_dir_key#24){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#1: ffff88805eff8188 (&type->i_mutex_dir_key#24){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline]
#1: ffff88805eff8188 (&type->i_mutex_dir_key#24){++++}-{3:3}, at: path_openat+0x7d3/0x3240 fs/namei.c:3796
7 locks held by syz-executor.2/10456:
#0: ffff88807df22420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2855 [inline]
#0: ffff88807df22420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff88807913bc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff88802311c3c8 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8eed2068 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
#4: ffff88806919a0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff88806919a0e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1003
#5: ffff888021223250 (&devlink->lock_key#27){+.+.}-{3:3}, at: nsim_drv_probe+0xcb/0xb80 drivers/net/netdevsim/dev.c:1534
#6: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: nsim_init_netdevsim drivers/net/netdevsim/netdev.c:368 [inline]
#6: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: nsim_create+0x357/0x480 drivers/net/netdevsim/netdev.c:434
2 locks held by syz-executor.3/10525:
#0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
#1: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#1: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.4/10544:
#0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f594488 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
4 locks held by syz-executor.1/10601:
3 locks held by syz-executor.0/10603:
#0: ffff88807de72420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:453
#1: ffff88804fb9de00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#1: ffff88804fb9de00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_fileattr_set+0x139/0xd50 fs/ioctl.c:682
#2: ffff88807de74b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_write fs/ext4/ext4.h:1781 [inline]
#2: ffff88807de74b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ind_migrate+0x253/0x890 fs/ext4/migrate.c:625
2 locks held by syz-executor.0/10604:
#0: ffff88807de72420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88804fb9de00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#1: ffff88804fb9de00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: process_measurement+0x450/0x1f60 security/integrity/ima/ima_main.c:248
2 locks held by syz-executor.0/10605:
#0: ffff88807de72420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88804fb9de00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#1: ffff88804fb9de00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: process_measurement+0x450/0x1f60 security/integrity/ima/ima_main.c:248
1 lock held by syz-executor.0/10606:
#0: ffff88804fb9de00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#0: ffff88804fb9de00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: process_measurement+0x450/0x1f60 security/integrity/ima/ima_main.c:248
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller-00005-gb947cc5bf6d7 #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+0x241/0x360 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f0/0x390 kernel/kthread.c:388
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 PID: 10574 Comm: syz-executor.1 Not tainted 6.9.0-rc6-syzkaller-00005-gb947cc5bf6d7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:memset_orig+0x36/0xb0 arch/x86/lib/memset_64.S:68
Code: b8 01 01 01 01 01 01 01 01 48 0f af c1 41 89 f9 41 83 e1 07 75 70 48 89 d1 48 c1 e9 06 74 35 0f 1f 44 00 00 48 ff c9 48 89 07 <48> 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47 28 48 89
RSP: 0018:ffffc900127c72a0 EFLAGS: 00000202
RAX: ffffffffffffffff RBX: ffff888048439000 RCX: 0000000000000007
RDX: 0000000000000200 RSI: 00000000000000ff RDI: ffffed1009087200
RBP: 0000000000000000 R08: dffffc0000000000 R09: 0000000000000000
R10: ffffed1009087200 R11: fffffbfff25dfca7 R12: ffffea0001210e40
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2bd28000 CR3: 000000002be40000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kasan_poison_pages include/linux/kasan.h:114 [inline]
free_pages_prepare mm/page_alloc.c:1162 [inline]
free_unref_page_prepare+0x352/0xaa0 mm/page_alloc.c:2347
free_unref_folios+0x1f2/0xc10 mm/page_alloc.c:2536
folios_put_refs+0x93a/0xa60 mm/swap.c:1034
free_pages_and_swap_cache+0x2ea/0x690 mm/swap_state.c:329
__tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
tlb_flush_mmu+0x3a3/0x680 mm/mmu_gather.c:373
tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
exit_mmap+0x4bb/0xd60 mm/mmap.c:3280
__mmput+0x115/0x3c0 kernel/fork.c:1346
exit_mm+0x220/0x310 kernel/exit.c:569
do_exit+0x99e/0x27e0 kernel/exit.c:865
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x16a1/0x1740 kernel/signal.c:2911
arch_do_signal_or_restart+0x96/0x860 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+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fef0f07dea9
Code: Unable to access opcode bytes at 0x7fef0f07de7f.
RSP: 002b:00007ffcdc902238 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 0000000000000fd2 RCX: 00007fef0f07dea9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fef0f1ac05c
RBP: 00007fef0f1ac05c R08: 00007fef0fe7b0b0 R09: 00007ffcdc902260
R10: 00007ffcdc9023c0 R11: 0000000000000246 R12: 0000000000068476
R13: 00000000000674a4 R14: 00007ffcdc9023e0 R15: 00007fef0f034cb0