INFO: task syz-executor.3:12570 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25072 pid:12570 tgid:12570 ppid:5088 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x576/0x2740 kernel/exit.c:825
do_group_exit+0x206/0x2c0 kernel/exit.c:1020
get_signal+0x1769/0x1840 kernel/signal.c:2893
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
do_syscall_64+0x102/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f84cf27cda9
RSP: 002b:00007ffda9a8d298 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 0000000000059242 RCX: 00007f84cf27cda9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f84cf3ac05c
RBP: 0000000000000032 R08: 00007f84cf3ac05c R09: 00007f84cf3ac05c
R10: 00007ffda9a8d3d0 R11: 0000000000000246 R12: 00007f84cf3ac05c
R13: 0000000000059274 R14: 00007ffda9a8d3f0 R15: 00007ffda9a8d3d0
INFO: task syz-executor.3:12578 blocked for more than 144 seconds.
Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27640 pid:12578 tgid:12570 ppid:5088 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_timeout+0xb0/0x300 kernel/time/timer.c:2159
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e5/0x6d0 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:414 [inline]
do_coredump+0xa99/0x2b50 fs/coredump.c:571
get_signal+0x146a/0x1840 kernel/signal.c:2879
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
do_syscall_64+0x102/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f84cf27cda9
RSP: 002b:00007f84cffd20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffe5 RBX: 00007f84cf3ac050 RCX: 00007f84cf27cda9
RDX: 0000000000000007 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f84cf2c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f84cf3ac050 R15: 00007ffda9a8d1b8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:5/139:
2 locks held by getty/4799:
#0: ffff88802a8b60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.1/5078:
8 locks held by kworker/0:6/5144:
1 lock held by syz-executor.5/15499:
1 lock held by syz-executor.5/15500:
1 lock held by syz-executor.0/15503:
#0: ffffffff8eb48788 (rtnl_mutex){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnetlink_rcv_msg+0x82c/0x1030 net/core/rtnetlink.c:6612
2 locks held by syz-executor.1/15511:
#0: ffff8880b983c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:567
#1: ffff8880b9828988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5092 Comm: syz-executor.5 Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x60 kernel/kcov.c:207
Code: 48 8b 3d 44 c8 a7 0b 48 89 de 5b e9 53 cd 51 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 65 48 8b 0d 20 c5 74 7e 65 8b 15 21 c5 74 7e c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 fc 15 00 00
RSP: 0018:ffffc9000408f058 EFLAGS: 00000286
RAX: ffffffff813e3a27 RBX: ffffc9000408f200 RCX: ffff888022b09dc0
RDX: 0000000080000001 RSI: ffffc9000408f1f0 RDI: ffffc9000408f200
RBP: ffffc9000408f200 R08: 0000000000000005 R09: ffffffff813e2660
R10: 0000000000000003 R11: ffff888022b09dc0 R12: ffffc9000408f1f8
R13: dffffc0000000000 R14: ffffc9000408f240 R15: dffffc0000000000
FS: 000055555724a480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fda76ad56c6 CR3: 000000003ffe1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
deref_stack_reg+0x27/0x250 arch/x86/kernel/unwind_orc.c:402
unwind_next_frame+0x1ab9/0x29e0 arch/x86/kernel/unwind_orc.c:648
__unwind_start+0x641/0x7a0 arch/x86/kernel/unwind_orc.c:760
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xfd/0x1a0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x70 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:314 [inline]
__kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:340
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3813 [inline]
kmem_cache_alloc_bulk+0x4e3/0x780 mm/slub.c:4655
mt_alloc_bulk lib/maple_tree.c:167 [inline]
mas_dup_alloc lib/maple_tree.c:6601 [inline]
mas_dup_build+0x8a1/0x10a0 lib/maple_tree.c:6665
__mt_dup+0x220/0x3b0 lib/maple_tree.c:6729
dup_mmap kernel/fork.c:661 [inline]
dup_mm kernel/fork.c:1685 [inline]
copy_mm+0x777/0x21b0 kernel/fork.c:1734
copy_process+0x1d6f/0x3fb0 kernel/fork.c:2496
kernel_clone+0x222/0x840 kernel/fork.c:2901
__do_sys_clone kernel/fork.c:3044 [inline]
__se_sys_clone kernel/fork.c:3028 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:3028
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fda75e79dd3
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:00007ffc2eac4498 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fda75e79dd3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 000055555724a750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000