INFO: task syz.0.60:5560 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-syzkaller-00173-g08c8acc9d8f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.60 state:D stack:23512 pid:5560 tgid:5559 ppid:5228 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
mmap_write_lock include/linux/mmap_lock.h:106 [inline]
exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
__mmput+0x115/0x390 kernel/fork.c:1347
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x28e0 kernel/exit.c:926
do_group_exit+0x207/0x2c0 kernel/exit.c:1088
get_signal+0x16a3/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
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+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f00f8b7dff9
RSP: 002b:00007f00f9a5b0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f00f8d35f88 RCX: 00007f00f8b7dff9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f00f8d35f88
RBP: 00007f00f8d35f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f00f8d35f8c
R13: 0000000000000000 R14: 00007fff0736fc40 R15: 00007fff0736fd28
INFO: task syz.3.63:5569 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-syzkaller-00173-g08c8acc9d8f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.63 state:D stack:21776 pid:5569 tgid:5561 ppid:5237 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
mmap_write_lock include/linux/mmap_lock.h:106 [inline]
exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
__mmput+0x115/0x390 kernel/fork.c:1347
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x28e0 kernel/exit.c:926
do_group_exit+0x207/0x2c0 kernel/exit.c:1088
get_signal+0x16a3/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
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+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbab3b7dff9
RSP: 002b:00007fbab49c0038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 0000000000000030 RBX: 00007fbab3d36058 RCX: 00007fbab3b7dff9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007fbab3bf0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fbab3d36058 R15: 00007ffdc4a25f78
INFO: task syz.2.62:5562 blocked for more than 144 seconds.
Not tainted 6.12.0-rc1-syzkaller-00173-g08c8acc9d8f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.62 state:D stack:23808 pid:5562 tgid:5562 ppid:5234 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6824
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
mmap_write_lock include/linux/mmap_lock.h:106 [inline]
exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
__mmput+0x115/0x390 kernel/fork.c:1347
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x28e0 kernel/exit.c:926
do_group_exit+0x207/0x2c0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097
x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff5b657dff9
RSP: 002b:00007ffdbbb8a368 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff5b657dff9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffdbbb8a3bc R08: 00007ffdbbb8a44f R09: 000000000001019e
R10: 00007ff5b6722000 R11: 0000000000000246 R12: 0000000000000032
R13: 000000000001019e R14: 0000000000010140 R15: 00007ffdbbb8a410
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
5 locks held by kworker/u8:6/2570:
#0: ffff8880b873ea98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:593
#1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989
#2: ffffffff9a5ded28 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_deactivate+0x158/0x390 lib/debugobjects.c:763
#3: ffffffff9a64f9a8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x16d/0x510 lib/debugobjects.c:708
#4: ffff8880607b8d58 (&bat_priv->forw_bat_list_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
#4: ffff8880607b8d58 (&bat_priv->forw_bat_list_lock){+...}-{2:2}, at: batadv_forw_packet_queue+0x33/0x270 net/batman-adv/send.c:673
2 locks held by udevd/4684:
#0: ffffffff8e9eb390 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mmap kernel/fork.c:636 [inline]
#0: ffffffff8e9eb390 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1674 [inline]
#0: ffffffff8e9eb390 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x282/0x1f40 kernel/fork.c:1723
#1: ffff88807b039e18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#1: ffff88807b039e18 (&mm->mmap_lock){++++}-{3:3}, at: dup_mmap kernel/fork.c:637 [inline]
#1: ffff88807b039e18 (&mm->mmap_lock){++++}-{3:3}, at: dup_mm kernel/fork.c:1674 [inline]
#1: ffff88807b039e18 (&mm->mmap_lock){++++}-{3:3}, at: copy_mm+0x2a5/0x1f40 kernel/fork.c:1723
2 locks held by getty/4990:
#0: ffff88814d0d00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5216:
#0: ffff888027df5718 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff888027df5718 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17c/0x3d0 mm/util.c:586
1 lock held by udevd/5227:
#0: ffff88807bcf8198 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff88807bcf8198 (&mm->mmap_lock){++++}-{3:3}, at: __vm_munmap+0x1fe/0x480 mm/mmap.c:1597
1 lock held by syz-executor/5228:
#0: ffff888028eaea18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline]
#0: ffff888028eaea18 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
2 locks held by syz-executor/5238:
#0: ffffffff8e9eb390 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mmap kernel/fork.c:636 [inline]
#0: ffffffff8e9eb390 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1674 [inline]
#0: ffffffff8e9eb390 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x282/0x1f40 kernel/fork.c:1723
#1: ffff888028eaf398 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#1: ffff888028eaf398 (&mm->mmap_lock){++++}-{3:3}, at: dup_mmap kernel/fork.c:637 [inline]
#1: ffff888028eaf398 (&mm->mmap_lock){++++}-{3:3}, at: dup_mm kernel/fork.c:1674 [inline]
#1: ffff888028eaf398 (&mm->mmap_lock){++++}-{3:3}, at: copy_mm+0x2a5/0x1f40 kernel/fork.c:1723
4 locks held by kworker/1:4/5282:
#0: ffff8880b873ea98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:593
#1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a7/0x770 kernel/sched/psi.c:977
#2: ffffffff9a5ded28 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_deactivate+0x158/0x390 lib/debugobjects.c:763
#3: ffffffff9a680ed8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x16d/0x510 lib/debugobjects.c:708
1 lock held by syz.0.60/5560:
#0: ffff888027df4d98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline]
#0: ffff888027df4d98 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
1 lock held by syz.3.63/5569:
#0: ffff88807b03d718 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline]
#0: ffff88807b03d718 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
1 lock held by syz.2.62/5562:
#0: ffff888027df0198 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline]
#0: ffff888027df0198 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x2bd/0xc40 mm/mmap.c:1872
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00173-g08c8acc9d8f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5311 Comm: kworker/1:5 Not tainted 6.12.0-rc1-syzkaller-00173-g08c8acc9d8f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0x1280/0x2050 kernel/locking/lockdep.c:5199
Code: e6 2f 8e 00 48 bf 00 00 00 00 00 fc ff df 48 83 3b 00 0f 84 6e 04 00 00 41 0f b6 04 3e 84 c0 0f 85 15 0a 00 00 48 8b 44 24 10 <8b> 18 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 00 58 2c
RSP: 0018:ffffc900041cf870 EFLAGS: 00000046
RAX: ffff88801e78e5a0 RBX: ffffffff93c98d80 RCX: ffffffff817059ec
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: 1cbd0a84e3323306 R08: ffffffff942c58ef R09: 1ffffffff2858b1d
R10: dffffc0000000000 R11: fffffbfff2858b1e R12: 0000000000000000
R13: ffff88801e78e4d8 R14: 1ffff11003cf1cb4 R15: ffff88801e78e5a0
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a55bbb5590 CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:816 [inline]
nsim_dev_trap_report_work+0x6a7/0xaa0 drivers/net/netdevsim/dev.c:850
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244