INFO: task syz.6.1257:8395 blocked for more than 143 seconds.
Not tainted 6.1.129-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1257 state:D stack:20128 pid:8395 ppid:5716 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5243 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6560
schedule+0xbf/0x180 kernel/sched/core.c:6636
rwsem_down_write_slowpath+0xea1/0x14b0 kernel/locking/rwsem.c:1189
mmap_write_lock include/linux/mmap_lock.h:71 [inline]
exit_mmap+0x28c/0x980 mm/mmap.c:3246
__mmput+0x115/0x3c0 kernel/fork.c:1200
exit_mm+0x226/0x300 kernel/exit.c:565
do_exit+0x9f1/0x26a0 kernel/exit.c:858
do_group_exit+0x202/0x2b0 kernel/exit.c:1021
get_signal+0x16cb/0x17a0 kernel/signal.c:2871
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:316
exc_page_fault+0x1c0/0x620 arch/x86/mm/fault.c:1490
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x0
RSP: 002b:0000400000000168 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fa53a1a6080 RCX: 00007fa539f8d169
RDX: 0000400000000180 RSI: 0000400000000160 RDI: 0000000004804080
RBP: 00007fa53a00e2a0 R08: 0000400000000200 R09: 0000400000000200
R10: 00004000000001c0 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa53a1a6080 R15: 00007fff5dd69348
</TASK>
INFO: task syz.4.1268:8408 blocked for more than 143 seconds.
Not tainted 6.1.129-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1268 state:D stack:25864 pid:8408 ppid:4249 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5243 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6560
schedule+0xbf/0x180 kernel/sched/core.c:6636
rwsem_down_write_slowpath+0xea1/0x14b0 kernel/locking/rwsem.c:1189
mmap_write_lock include/linux/mmap_lock.h:71 [inline]
exit_mmap+0x28c/0x980 mm/mmap.c:3246
__mmput+0x115/0x3c0 kernel/fork.c:1200
exit_mm+0x226/0x300 kernel/exit.c:565
do_exit+0x9f1/0x26a0 kernel/exit.c:858
do_group_exit+0x202/0x2b0 kernel/exit.c:1021
__do_sys_exit_group kernel/exit.c:1032 [inline]
__se_sys_exit_group kernel/exit.c:1030 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1030
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4e7d18d169
RSP: 002b:00007fff872201e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4e7d18d169
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff8722024c R08: 00000014872202df R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000115
R13: 00000000000927c0 R14: 000000000004ad62 R15: 00007fff872202a0
</TASK>
INFO: task syz.1.1269:8415 blocked for more than 143 seconds.
Not tainted 6.1.129-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1269 state:D stack:24032 pid:8415 ppid:4258 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5243 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6560
schedule+0xbf/0x180 kernel/sched/core.c:6636
rwsem_down_write_slowpath+0xea1/0x14b0 kernel/locking/rwsem.c:1189
mmap_write_lock include/linux/mmap_lock.h:71 [inline]
exit_mmap+0x28c/0x980 mm/mmap.c:3246
__mmput+0x115/0x3c0 kernel/fork.c:1200
exit_mm+0x226/0x300 kernel/exit.c:565
do_exit+0x9f1/0x26a0 kernel/exit.c:858
do_group_exit+0x202/0x2b0 kernel/exit.c:1021
get_signal+0x16cb/0x17a0 kernel/signal.c:2871
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa8a3f8d169
RSP: 002b:00007fa8a4e760e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fa8a41a5fa8 RCX: 00007fa8a3f8d169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa8a41a5fa8
RBP: 00007fa8a41a5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8a41a5fac
R13: 0000000000000000 R14: 00007ffcf171b360 R15: 00007ffcf171b448
</TASK>
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32e850 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32f050 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/27:
#0: ffffffff8d32e680 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32e680 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32e680 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6510
1 lock held by klogd/3612:
#0: ffff8880b8e3a9d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
2 locks held by getty/4011:
#0: ffff88814cc6f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc9000325e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x54a/0x1620 drivers/tty/n_tty.c:2198
1 lock held by syz-executor/4239:
#0: ffff888073ae97d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#0: ffff888073ae97d8 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x175/0x2d0 mm/util.c:518
1 lock held by syz-executor/4249:
#0: ffff888073aec4d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff888073aec4d8 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x28c/0x980 mm/mmap.c:3246
2 locks held by syz-executor/4252:
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: dup_mmap kernel/fork.c:593 [inline]
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: dup_mm kernel/fork.c:1541 [inline]
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: copy_mm+0x3cb/0x1990 kernel/fork.c:1590
#1: ffff888073aecc58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#1: ffff888073aecc58 (&mm->mmap_lock){++++}-{3:3}, at: dup_mmap kernel/fork.c:594 [inline]
#1: ffff888073aecc58 (&mm->mmap_lock){++++}-{3:3}, at: dup_mm kernel/fork.c:1541 [inline]
#1: ffff888073aecc58 (&mm->mmap_lock){++++}-{3:3}, at: copy_mm+0x3e5/0x1990 kernel/fork.c:1590
2 locks held by syz-executor/5194:
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: dup_mmap kernel/fork.c:593 [inline]
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: dup_mm kernel/fork.c:1541 [inline]
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: copy_mm+0x3cb/0x1990 kernel/fork.c:1590
#1: ffff888017c6d3d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#1: ffff888017c6d3d8 (&mm->mmap_lock){++++}-{3:3}, at: dup_mmap kernel/fork.c:594 [inline]
#1: ffff888017c6d3d8 (&mm->mmap_lock){++++}-{3:3}, at: dup_mm kernel/fork.c:1541 [inline]
#1: ffff888017c6d3d8 (&mm->mmap_lock){++++}-{3:3}, at: copy_mm+0x3e5/0x1990 kernel/fork.c:1590
2 locks held by syz-executor/5716:
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: dup_mmap kernel/fork.c:593 [inline]
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: dup_mm kernel/fork.c:1541 [inline]
#0: ffffffff8d3caf30 (dup_mmap_sem){++++}-{0:0}, at: copy_mm+0x3cb/0x1990 kernel/fork.c:1590
#1: ffff888031c9d3d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#1: ffff888031c9d3d8 (&mm->mmap_lock){++++}-{3:3}, at: dup_mmap kernel/fork.c:594 [inline]
#1: ffff888031c9d3d8 (&mm->mmap_lock){++++}-{3:3}, at: dup_mm kernel/fork.c:1541 [inline]
#1: ffff888031c9d3d8 (&mm->mmap_lock){++++}-{3:3}, at: copy_mm+0x3e5/0x1990 kernel/fork.c:1590
1 lock held by syz.6.1257/8395:
#0: ffff88807e4f9f58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff88807e4f9f58 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x28c/0x980 mm/mmap.c:3246
1 lock held by syz.4.1268/8408:
#0: ffff88807e4fea58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff88807e4fea58 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x28c/0x980 mm/mmap.c:3246
1 lock held by syz.1.1269/8415:
#0: ffff888020735b58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff888020735b58 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x28c/0x980 mm/mmap.c:3246
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ca/0x430 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 75 Comm: kworker/u4:4 Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: bat_events batadv_bla_periodic_work
RIP: 0010:unwind_next_frame+0x42/0x2220 arch/x86/kernel/unwind_orc.c:424
Code: 00 00 00 fc ff df 48 8d 6f 48 48 89 e8 48 c1 e8 03 48 89 44 24 30 42 80 3c 30 00 74 08 48 89 ef e8 83 19 a5 00 48 89 6c 24 18 <4c> 8b 7b 48 48 8d 6b 38 48 89 e8 48 c1 e8 03 48 89 44 24 60 42 80
RSP: 0018:ffffc900015a7340 EFLAGS: 00000246
RAX: 1ffff920002b4e8d RBX: ffffc900015a7420 RCX: ffffffff8fe3a000
RDX: dffffc0000000000 RSI: ffffffff81e11ac2 RDI: ffffc900015a7420
RBP: ffffc900015a7468 R08: 0000000000000003 R09: ffffc900015a7510
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888019fb1dc0
R13: ffffffff81784af0 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fec4dd50b8 CR3: 000000000d08e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<NMI>
</NMI>
<TASK>
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1724 [inline]
slab_free_freelist_hook mm/slub.c:1750 [inline]
slab_free mm/slub.c:3661 [inline]
kmem_cache_free+0x292/0x510 mm/slub.c:3683
enqueue_to_backlog+0x1ca/0xc00 net/core/dev.c:4747
netif_rx_internal+0x164/0x600 net/core/dev.c:5003
netif_rx+0x55/0x90 net/core/dev.c:5056
batadv_bla_send_claim+0x92b/0xe30 net/batman-adv/bridge_loop_avoidance.c:447
batadv_bla_send_announce net/batman-adv/bridge_loop_avoidance.c:675 [inline]
batadv_bla_periodic_work+0x5d8/0xae0 net/batman-adv/bridge_loop_avoidance.c:1481
process_one_work+0x917/0x1260 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>