INFO: task syz-executor.0:14854 blocked for more than 143 seconds.
Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28736 pid:14854 tgid:14849 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:805 [inline]
lookup_slow fs/namei.c:1708 [inline]
walk_component+0x342/0x5b0 fs/namei.c:2004
lookup_last fs/namei.c:2461 [inline]
path_lookupat+0x17f/0x770 fs/namei.c:2485
filename_lookup+0x1e5/0x5b0 fs/namei.c:2514
kern_path+0x35/0x50 fs/namei.c:2622
unix_find_bsd net/unix/af_unix.c:1064 [inline]
unix_find_other+0xdc/0x820 net/unix/af_unix.c:1125
unix_stream_connect+0x337/0x1780 net/unix/af_unix.c:1514
__sys_connect_file+0x15f/0x1a0 net/socket.c:2048
__sys_connect+0x149/0x170 net/socket.c:2065
__do_sys_connect net/socket.c:2075 [inline]
__se_sys_connect net/socket.c:2072 [inline]
__x64_sys_connect+0x72/0xb0 net/socket.c:2072
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40c107dea9
RSP: 002b:00007f40c1d480c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f40c11ac050 RCX: 00007f40c107dea9
RDX: 000000000000006e RSI: 0000000020932000 RDI: 0000000000000004
RBP: 00007f40c10ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f40c11ac050 R15: 00007ffe3acbf798
INFO: task syz-executor.0:14857 blocked for more than 144 seconds.
Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29136 pid:14857 tgid:14849 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x950/0x13f0 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:795 [inline]
open_last_lookups fs/namei.c:3563 [inline]
path_openat+0x8c7/0x2990 fs/namei.c:3796
do_filp_open+0x1dc/0x430 fs/namei.c:3826
do_sys_openat2+0x17a/0x1e0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1432
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40c107dea9
RSP: 002b:00007f40c1d270c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f40c11ac120 RCX: 00007f40c107dea9
RDX: 000000000000275a RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 00007f40c10ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f40c11ac120 R15: 00007ffe3acbf798
INFO: task syz-executor.0:14858 blocked for more than 145 seconds.
Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29824 pid:14858 tgid:14849 ppid:5090 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x950/0x13f0 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:830 [inline]
filename_create+0x1c2/0x530 fs/namei.c:3892
do_mkdirat+0xab/0x3a0 fs/namei.c:4138
__do_sys_mkdir fs/namei.c:4166 [inline]
__se_sys_mkdir fs/namei.c:4164 [inline]
__x64_sys_mkdir+0xf1/0x140 fs/namei.c:4164
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40c107dea9
RSP: 002b:00007f40c1d060c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f40c11ac1f0 RCX: 00007f40c107dea9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f40c10ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f40c11ac1f0 R15: 00007ffe3acbf798
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
1 lock held by khungtaskd/29:
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/1:1/44:
2 locks held by getty/4834:
#0: ffff888029d0c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
4 locks held by kworker/u8:9/5824:
2 locks held by syz-executor.0/14850:
1 lock held by syz-executor.0/14854:
#0: ffff88805f2a4188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88805f2a4188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff88805f2a4188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
1 lock held by syz-executor.0/14857:
#0: ffff88805f2a4188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#0: ffff88805f2a4188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline]
#0: ffff88805f2a4188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: path_openat+0x8c7/0x2990 fs/namei.c:3796
1 lock held by syz-executor.0/14858:
#0: ffff88805f2a4188 (&type->i_mutex_dir_key#28/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
#0: ffff88805f2a4188 (&type->i_mutex_dir_key#28/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:3892
3 locks held by syz-executor.1/16471:
1 lock held by syz-executor.1/16478:
#0: ffff88804dd64188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88804dd64188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff88804dd64188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
2 locks held by syz-executor.1/16480:
#0: ffff88805765c420 (sb_writers#42){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3555 [inline]
#0: ffff88805765c420 (sb_writers#42){.+.+}-{0:0}, at: path_openat+0x19a7/0x2990 fs/namei.c:3796
#1: ffff88804dd64188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#1: ffff88804dd64188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline]
#1: ffff88804dd64188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: path_openat+0x8c7/0x2990 fs/namei.c:3796
2 locks held by syz-executor.1/16482:
#0: ffff88805765c420 (sb_writers#42){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:3885
#1: ffff88804dd64188 (&type->i_mutex_dir_key#28/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
#1: ffff88804dd64188 (&type->i_mutex_dir_key#28/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:3892
1 lock held by syz-executor.4/16562:
#0: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.1/16625:
#0: ffffffff8f301a08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f301a08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
2 locks held by syz-executor.3/16683:
2 locks held by syz-executor.2/16712:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #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+0x116/0x1f0 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf86/0x1240 kernel/hung_task.c:380
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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 PID: 15005 Comm: syz-executor.0 Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:page_table_check_set mm/page_table_check.c:122 [inline]
RIP: 0010:page_table_check_set+0x67b/0xc60 mm/page_table_check.c:97
Code: ff 8b 44 24 08 85 c0 0f 85 b6 02 00 00 e8 fd d2 99 ff 48 8d 7b 04 be 04 00 00 00 e8 7f 03 f5 ff b8 01 00 00 00 f0 0f c1 43 04 <8d> 58 01 31 ff 89 de e8 b9 cd 99 ff 85 db 0f 89 60 fe ff ff e8 cc
RSP: 0018:ffffc90003ad76e0 EFLAGS: 00000206
RAX: 0000000000000002 RBX: ffff88801882ecb8 RCX: ffffffff81f3ef61
RDX: ffffed1003105d98 RSI: 0000000000000004 RDI: ffff88801882ecbc
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1003105d97
R10: ffff88801882ecbf R11: 0000000000000007 R12: ffff88801882ec70
R13: 0000000000000001 R14: 0000000000000000 R15: dffffc0000000000
FS: 000055555add1480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f318a2d56c6 CR3: 0000000079342000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__page_table_check_ptes_set+0x444/0x700 mm/page_table_check.c:196
page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
set_ptes include/linux/pgtable.h:267 [inline]
__copy_present_ptes mm/memory.c:953 [inline]
copy_present_ptes mm/memory.c:1036 [inline]
copy_pte_range mm/memory.c:1151 [inline]
copy_pmd_range mm/memory.c:1238 [inline]
copy_pud_range mm/memory.c:1275 [inline]
copy_p4d_range mm/memory.c:1299 [inline]
copy_page_range+0x14a3/0x4290 mm/memory.c:1397
dup_mmap kernel/fork.c:751 [inline]
dup_mm kernel/fork.c:1688 [inline]
copy_mm kernel/fork.c:1737 [inline]
copy_process+0x8098/0x9090 kernel/fork.c:2390
kernel_clone+0xfd/0x980 kernel/fork.c:2797
__do_sys_clone+0xba/0x100 kernel/fork.c:2940
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f318967aed3
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffc3d917e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f318967aed3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 000055555add1750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001