INFO: task syz-executor:6246 blocked for more than 143 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21656 pid:6246 tgid:6246 ppid:1 task_flags:0x40054c flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1742/0x4c30 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_write_slowpath+0x926/0x10e0 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
mmap_write_lock include/linux/mmap_lock.h:397 [inline]
exit_mmap+0x28b/0xb30 mm/mmap.c:1288
__mmput+0x118/0x420 kernel/fork.c:1129
exit_mm+0x1da/0x2c0 kernel/exit.c:582
do_exit+0x648/0x22f0 kernel/exit.c:949
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x1252/0x1300 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x217/0x300 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f85ba185613
RSP: 002b:00007fff34d19a88 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 00007f85ba185613
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 00005555932fd7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f85ba3b1280 R14: 0000000000000003 R15: 00007fff34d19c20
INFO: task syz-executor:6246 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz-executor:6250 blocked for more than 143 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21656 pid:6250 tgid:6250 ppid:1 task_flags:0x40054c flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1742/0x4c30 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_write_slowpath+0x926/0x10e0 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
mmap_write_lock include/linux/mmap_lock.h:397 [inline]
exit_mmap+0x28b/0xb30 mm/mmap.c:1288
__mmput+0x118/0x420 kernel/fork.c:1129
exit_mm+0x1da/0x2c0 kernel/exit.c:582
do_exit+0x648/0x22f0 kernel/exit.c:949
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x1252/0x1300 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x217/0x300 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f5d20d85613
RSP: 002b:00007ffe0fb68ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 00007f5d20d85613
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 000055558970b7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d20fb1280 R14: 0000000000000003 R15: 00007ffe0fb68c80
INFO: task syz-executor:6250 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz-executor:6253 blocked for more than 144 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:22264 pid:6253 tgid:6253 ppid:1 task_flags:0x40054c flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1742/0x4c30 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_write_slowpath+0x926/0x10e0 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
mmap_write_lock include/linux/mmap_lock.h:397 [inline]
exit_mmap+0x28b/0xb30 mm/mmap.c:1288
__mmput+0x118/0x420 kernel/fork.c:1129
exit_mm+0x1da/0x2c0 kernel/exit.c:582
do_exit+0x648/0x22f0 kernel/exit.c:949
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x1252/0x1300 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x217/0x300 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f29d7985613
RSP: 002b:00007ffcf8ba7848 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 00007f29d7985613
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 000055556bcec7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f29d7bb1280 R14: 0000000000000003 R15: 00007ffcf8ba79e0
INFO: task syz-executor:6253 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz-executor:6254 blocked for more than 144 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21272 pid:6254 tgid:6254 ppid:1 task_flags:0x40054c flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1742/0x4c30 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_write_slowpath+0x926/0x10e0 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
mmap_write_lock include/linux/mmap_lock.h:397 [inline]
exit_mmap+0x28b/0xb30 mm/mmap.c:1288
__mmput+0x118/0x420 kernel/fork.c:1129
exit_mm+0x1da/0x2c0 kernel/exit.c:582
do_exit+0x648/0x22f0 kernel/exit.c:949
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x1252/0x1300 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x217/0x300 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fe6b4785613
RSP: 002b:00007ffd9e9672f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 00007fe6b4785613
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555563db37d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000024d9f R15: 00007ffd9e967490
INFO: task syz-executor:6254 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz-executor:6256 blocked for more than 145 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:22232 pid:6256 tgid:6256 ppid:1 task_flags:0x40054c flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1742/0x4c30 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_write_slowpath+0x926/0x10e0 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
mmap_write_lock include/linux/mmap_lock.h:397 [inline]
exit_mmap+0x28b/0xb30 mm/mmap.c:1288
__mmput+0x118/0x420 kernel/fork.c:1129
exit_mm+0x1da/0x2c0 kernel/exit.c:582
do_exit+0x648/0x22f0 kernel/exit.c:949
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x1252/0x1300 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x217/0x300 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fafb7d85017
RSP: 002b:00007fffbeaca550 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000000000000005 RCX: 00007fafb7d85017
RDX: 0000000040000000 RSI: 00007fffbeaca5bc RDI: 00000000ffffffff
RBP: 00007fffbeaca5bc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 0000555592245590 R14: 0000000000024df7 R15: 00007fffbeaca610
INFO: task syz-executor:6256 is blocked on an rw-semaphore, but the owner is not found.
INFO: task syz.3.33:6470 blocked for more than 145 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.33 state:D stack:27000 pid:6470 tgid:6470 ppid:6256 task_flags:0x40004c flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1742/0x4c30 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_write_slowpath+0x926/0x10e0 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
mmap_write_lock include/linux/mmap_lock.h:397 [inline]
exit_mmap+0x28b/0xb30 mm/mmap.c:1288
__mmput+0x118/0x420 kernel/fork.c:1129
exit_mm+0x1da/0x2c0 kernel/exit.c:582
do_exit+0x648/0x22f0 kernel/exit.c:949
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
__do_sys_exit_group kernel/exit.c:1113 [inline]
__se_sys_exit_group kernel/exit.c:1111 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1111
x64_sys_call+0x21f7/0x2200 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x8a/0x300 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fafb7d8eec9
RSP: 002b:00007fffbeaca558 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fafb7d8eec9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fffbeaca5bc R08: 00000005beaca64f R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 0000000000024d47 R15: 00007fffbeaca610
INFO: task syz.3.33:6470 is blocked on an rw-semaphore, but the owner is not found.
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8db37e60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8db37e60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8db37e60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
3 locks held by kworker/u8:1/32:
#0: ffff8880b8839fd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:636
#1: ffff8880b8824048 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:220 [inline]
#1: ffff8880b8824048 (psi_seq){-.-.}-{0:0}, at: __schedule+0x2270/0x4c30 kernel/sched/core.c:6955
#2: ffff8880b8825958 (&base->lock){-.-.}-{2:2}, at: lock_timer_base kernel/time/timer.c:1004 [inline]
#2: ffff8880b8825958 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x1ae/0xf30 kernel/time/timer.c:1085
2 locks held by udevd/5094:
#0: ffffffff8dbebfb0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1484 [inline]
#0: ffffffff8dbebfb0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x131/0x4b0 kernel/fork.c:1537
#1: ffff88807e6acd20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:415 [inline]
#1: ffff88807e6acd20 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x12d/0x1c50 mm/mmap.c:1727
2 locks held by getty/5487:
#0: ffff888022c780a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000331e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x5ce/0x1ab0 drivers/tty/n_tty.c:2222
1 lock held by syz-execprog/6133:
#0: ffff888024eba220 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:415 [inline]
#0: ffff888024eba220 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x211/0x4d0 mm/util.c:578
1 lock held by syz-executor/6246:
#0: ffff88801e3aace0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88801e3aace0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6250:
#0: ffff8880233ce2a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff8880233ce2a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6253:
#0: ffff8880233ccd20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff8880233ccd20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6254:
#0: ffff8880233cc260 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff8880233cc260 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6256:
#0: ffff8880233cb7a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff8880233cb7a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by udevd/6262:
#0: ffff88801e3aed60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:415 [inline]
#0: ffff88801e3aed60 (&mm->mmap_lock){++++}-{4:4}, at: __vm_munmap+0x15c/0x3d0 mm/vma.c:3152
1 lock held by syz.3.33/6470:
#0: ffff88807eb49760 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88807eb49760 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by rm/6472:
#0: ffff88807eb4cd20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:415 [inline]
#0: ffff88807eb4cd20 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x211/0x4d0 mm/util.c:578
1 lock held by syz-executor/6476:
#0: ffff88801e3ad7e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88801e3ad7e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6481:
#0: ffff888030b4b7a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff888030b4b7a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6482:
#0: ffff88801e3ab7a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88801e3ab7a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6484:
#0: ffff88803116ace0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88803116ace0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6485:
#0: ffff888022e04260 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff888022e04260 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
2 locks held by kworker/u8:8/6579:
1 lock held by syz.7.40/6606:
#0: ffff88807df6b7a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88807df6b7a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz.9.49/6628:
#0: ffff88802941cd20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88802941cd20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6633:
#0: ffff88802941ace0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88802941ace0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6636:
#0: ffff88807eb4e2a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88807eb4e2a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6637:
#0: ffff88802941e2a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88802941e2a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6640:
#0: ffff88802941b7a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88802941b7a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6643:
#0: ffff88803116cd20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88803116cd20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz.1.60/6740:
#0: ffff88807d304260 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88807d304260 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6747:
#0: ffff888022e057e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff888022e057e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6753:
#0: ffff88801e3ac260 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88801e3ac260 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz-executor/6754:
#0: ffff88801e3ae2a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff88801e3ae2a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
1 lock held by syz.8.82/6900:
#0: ffff888022e02ce0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:397 [inline]
#0: ffff888022e02ce0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x28b/0xb30 mm/mmap.c:1288
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2e0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
watchdog+0x15af/0x15f0 kernel/hung_task.c:491
kthread+0x711/0x890 kernel/kthread.c:463
ret_from_fork+0x435/0x7c0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6579 Comm: kworker/u8:8 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: bat_events batadv_nc_worker
RIP: 0010:unwind_next_frame+0x10e/0x2390 include/linux/rcupdate.h:-1
Code: 74 ac 0d 00 75 1f c6 05 6c 74 ac 0d 01 48 c7 c7 80 32 28 8b be 4b 03 00 00 48 c7 c2 c0 32 28 8b e8 27 5b 28 00 4c 89 6c 24 70 <48> 89 5c 24 68 4d 8d 6e 50 4c 89 e8 48 c1 e8 03 48 89 44 24 38 80
RSP: 0018:ffffc900000075d8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8180fbda RCX: 145fef8d3d677900
RDX: 000000008eba6367 RSI: ffffffff8b7e0940 RDI: ffffffff8b7e0900
RBP: dffffc0000000000 R08: ffffffff8db37e60 R09: ffffffff81713045
R10: ffffc900000076f8 R11: ffffffff81a80ed0 R12: 1ffff92000000ed5
R13: ffffc900000076e0 R14: ffffc900000076a8 R15: ffffffff81713045
FS: 0000000000000000(0000) GS:ffff8881266e8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f36102e1ff8 CR3: 000000007a6f2000 CR4: 00000000003526f0
Call Trace:
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:243 [inline]
__kasan_slab_free+0x41/0x50 mm/kasan/common.c:275
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2422 [inline]
slab_free mm/slub.c:4695 [inline]
kmem_cache_free+0x1a4/0x410 mm/slub.c:4797
skb_release_data+0x62d/0x7c0 net/core/skbuff.c:1086
skb_release_all net/core/skbuff.c:1151 [inline]
__kfree_skb net/core/skbuff.c:1165 [inline]
consume_skb+0xb0/0x120 net/core/skbuff.c:1397
mac80211_hwsim_beacon_tx+0x3bc/0x7c0 drivers/net/wireless/virtual/mac80211_hwsim.c:2323
__iterate_interfaces+0x2ab/0x590 net/mac80211/util.c:761
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:797
mac80211_hwsim_beacon+0xbb/0x1c0 drivers/net/wireless/virtual/mac80211_hwsim.c:2353
__run_hrtimer kernel/time/hrtimer.c:1761 [inline]
__hrtimer_run_queues+0x52c/0xc50 kernel/time/hrtimer.c:1825
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842
handle_softirqs+0x286/0x860 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x2e/0xb0 kernel/rcu/tree.c:751
Code: 41 57 41 56 53 65 ff 05 f0 3e 71 10 e8 db 9d 62 09 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 0c 46 8d <4c> 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 1c 26 7a 00
RSP: 0018:ffffc900046df9e0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 145fef8d3d677900
RDX: ffff88802ac73c00 RSI: ffffffff8b7e0940 RDI: ffffffff8b7e0900
RBP: fffffffffffffe38 R08: ffffffff8db37e60 R09: ffffffff8ad4fa52
R10: dffffc0000000000 R11: ffffffff8ad4f980 R12: dffffc0000000000
R13: ffffffff8ad4fa52 R14: ffffffff8d460cd0 R15: dffffc0000000000
rcu_read_unlock include/linux/rcupdate.h:869 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x208/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa52/0x16a0 kernel/workqueue.c:3319
worker_thread+0xa57/0xfc0 kernel/workqueue.c:3400
kthread+0x711/0x890 kernel/kthread.c:463
ret_from_fork+0x435/0x7c0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245