INFO: task syz-executor.4:31576 blocked for more than 143 seconds.
Not tainted 5.17.0-rc1-syzkaller-00339-g169387e2aa29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28112 pid:31576 ppid: 3651 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4db0 kernel/sched/core.c:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032
__down_read_common kernel/locking/rwsem.c:1214 [inline]
__down_read kernel/locking/rwsem.c:1223 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1463
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0x91f/0x2a30 kernel/exit.c:793
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
__do_sys_exit_group kernel/exit.c:946 [inline]
__se_sys_exit_group kernel/exit.c:944 [inline]
__x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7141c38059
RSP: 002b:00007f714227ed58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f7141c38059
RDX: 00007f7141beac9b RSI: ffffffffffffffb8 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007ffeb07ec080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007f714227ee40
INFO: task syz-executor.4:31577 blocked for more than 143 seconds.
Not tainted 5.17.0-rc1-syzkaller-00339-g169387e2aa29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26888 pid:31577 ppid: 3651 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4db0 kernel/sched/core.c:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032
__down_read_common kernel/locking/rwsem.c:1214 [inline]
__down_read kernel/locking/rwsem.c:1223 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1463
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0x91f/0x2a30 kernel/exit.c:793
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x4b0/0x28c0 kernel/signal.c:2862
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7141c38059
RSP: 002b:00007f71405ad218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f7141d4af68 RCX: 00007f7141c38059
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7141d4af68
RBP: 00007f7141d4af60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7141d4af6c
R13: 00007f714227eb1f R14: 00007f71405ad300 R15: 0000000000022000
INFO: task syz-executor.4:31579 blocked for more than 144 seconds.
Not tainted 5.17.0-rc1-syzkaller-00339-g169387e2aa29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:29464 pid:31579 ppid: 3651 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4db0 kernel/sched/core.c:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032
__down_read_common kernel/locking/rwsem.c:1214 [inline]
__down_read kernel/locking/rwsem.c:1223 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1463
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0x91f/0x2a30 kernel/exit.c:793
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x4b0/0x28c0 kernel/signal.c:2862
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7141c38059
RSP: 002b:00007f714056b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f7141d4b108 RCX: 00007f7141c38059
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7141d4b108
RBP: 00007f7141d4b100 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7141d4b10c
R13: 00007f714227eb1f R14: 00007f714056b300 R15: 0000000000022000
INFO: task syz-executor.4:31580 blocked for more than 144 seconds.
Not tainted 5.17.0-rc1-syzkaller-00339-g169387e2aa29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:29504 pid:31580 ppid: 3651 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4db0 kernel/sched/core.c:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032
__down_read_common kernel/locking/rwsem.c:1214 [inline]
__down_read kernel/locking/rwsem.c:1223 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1463
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0x91f/0x2a30 kernel/exit.c:793
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x4b0/0x28c0 kernel/signal.c:2862
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7141c38059
RSP: 002b:00007f714054a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: fffffffffffffffc RBX: 00007f7141d4b1d0 RCX: 00007f7141c38059
RDX: 0000000000000000 RSI: 0000000000002000 RDI: 0000000020ffe000
RBP: 00007f7141c9208d R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f714227eb1f R14: 00007f714054a300 R15: 0000000000022000
INFO: task syz-executor.4:31581 blocked for more than 144 seconds.
Not tainted 5.17.0-rc1-syzkaller-00339-g169387e2aa29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28080 pid:31581 ppid: 3651 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4db0 kernel/sched/core.c:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032
__down_read_common kernel/locking/rwsem.c:1214 [inline]
__down_read kernel/locking/rwsem.c:1223 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1463
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0x91f/0x2a30 kernel/exit.c:793
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x4b0/0x28c0 kernel/signal.c:2862
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7141c38059
RSP: 002b:00007f7140529038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: fffffffffffffff4 RBX: 00007f7141d4b2a0 RCX: 00007f7141c38059
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f7140529050
RBP: 00007f7141c9208d R08: 0000000000000000 R09: 0000000000000058
R10: 00007f7140529050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007f714227eb1f R14: 00007f7140529300 R15: 0000000000022000
INFO: task syz-executor.4:31582 blocked for more than 145 seconds.
Not tainted 5.17.0-rc1-syzkaller-00339-g169387e2aa29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28880 pid:31582 ppid: 3651 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4db0 kernel/sched/core.c:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032
__down_read_common kernel/locking/rwsem.c:1214 [inline]
__down_read kernel/locking/rwsem.c:1223 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1463
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0x91f/0x2a30 kernel/exit.c:793
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x4b0/0x28c0 kernel/signal.c:2862
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7141c38059
RSP: 002b:00007f7140508218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f7141d4b378 RCX: 00007f7141c38059
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7141d4b378
RBP: 00007f7141d4b370 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7141d4b37c
R13: 00007f714227eb1f R14: 00007f7140508300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb83c20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by syslogd/2955:
#0: ffff8880b9d39c58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:489
#1: ffff8880b9d27948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:891
2 locks held by getty/3286:
#0: ffff88807e530098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b632e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
2 locks held by syz-fuzzer/3598:
#0: ffff8880b9d39c58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:489
#1: ffff8880b9d27948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:891
5 locks held by kworker/u4:40/29569:
1 lock held by syz-executor.4/31576:
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793
1 lock held by syz-executor.4/31577:
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793
1 lock held by syz-executor.4/31578:
1 lock held by syz-executor.4/31579:
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793
1 lock held by syz-executor.4/31580:
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793
1 lock held by syz-executor.4/31581:
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793
1 lock held by syz-executor.4/31582:
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline]
#0: ffff88807a20dc28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc1-syzkaller-00339-g169387e2aa29 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 19760 Comm: kworker/1:15 Not tainted 5.17.0-rc1-syzkaller-00339-g169387e2aa29 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:981 [inline]
RIP: 0010:debug_check_no_obj_freed+0x106/0x420 lib/debugobjects.c:1023
Code: 44 24 20 4c 8b 00 4d 85 c0 0f 84 59 02 00 00 49 bd 22 01 00 00 00 00 ad de 4c 89 c0 31 ed 48 c1 e8 03 41 89 ec 42 80 3c 38 00 <0f> 85 d2 00 00 00 49 8d 78 18 41 83 c4 01 49 8b 28 48 89 f8 48 c1
RSP: 0018:ffffc9000b7cfab8 EFLAGS: 00000046
RAX: 1ffff110086ce4d2 RBX: ffff88801c01c000 RCX: ffffffff815dc630
RDX: 1ffffffff20e038e RSI: 0000000000000004 RDI: ffffc9000b7cfa28
RBP: 0000000000000000 R08: ffff888043672690 R09: 0000000000000003
R10: fffff520016f9f45 R11: 0000000000000001 R12: 0000000000000000
R13: dead000000000122 R14: dead000000000100 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0127c4c20 CR3: 0000000018a86000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
slab_free_hook mm/slub.c:1703 [inline]
slab_free_freelist_hook+0xeb/0x1c0 mm/slub.c:1754
slab_free mm/slub.c:3509 [inline]
kfree+0xcb/0x280 mm/slub.c:4562
skb_free_head net/core/skbuff.c:655 [inline]
skb_release_data+0x65d/0x790 net/core/skbuff.c:677
skb_release_all net/core/skbuff.c:742 [inline]
__kfree_skb net/core/skbuff.c:756 [inline]
consume_skb net/core/skbuff.c:914 [inline]
consume_skb+0xc2/0x160 net/core/skbuff.c:908
nsim_dev_trap_report drivers/net/netdevsim/dev.c:818 [inline]
nsim_dev_trap_report_work+0x85d/0xbc0 drivers/net/netdevsim/dev.c:843
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 44 24 20 rex.R and $0x20,%al
3: 4c 8b 00 mov (%rax),%r8
6: 4d 85 c0 test %r8,%r8
9: 0f 84 59 02 00 00 je 0x268
f: 49 bd 22 01 00 00 00 movabs $0xdead000000000122,%r13
16: 00 ad de
19: 4c 89 c0 mov %r8,%rax
1c: 31 ed xor %ebp,%ebp
1e: 48 c1 e8 03 shr $0x3,%rax
22: 41 89 ec mov %ebp,%r12d
25: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
* 2a: 0f 85 d2 00 00 00 jne 0x102 <-- trapping instruction
30: 49 8d 78 18 lea 0x18(%r8),%rdi
34: 41 83 c4 01 add $0x1,%r12d
38: 49 8b 28 mov (%r8),%rbp
3b: 48 89 f8 mov %rdi,%rax
3e: 48 rex.W
3f: c1 .byte 0xc1