INFO: task syz-executor.4:21078 blocked for more than 143 seconds. Not tainted 5.17.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:28112 pid:21078 ppid: 3637 flags:0x00000000 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: 0033:0x7f4b3b473059 RSP: 002b:00007ffeca9a6708 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f4b3b473059 RDX: 00007f4b3b425c9b RSI: ffffffffffffffb8 RDI: 0000000000000000 RBP: 0000000000000000 R08: 00007ffeca9d4080 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffeca9a67f0 INFO: task syz-executor.4:21084 blocked for more than 143 seconds. Not tainted 5.17.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27856 pid:21084 ppid: 3637 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: 0033:0x7f4b3b473059 RSP: 002b:00007f4b39de8218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4b3b585f68 RCX: 00007f4b3b473059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4b3b585f68 RBP: 00007f4b3b585f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4b3b585f6c R13: 00007ffeca9a64cf R14: 00007f4b39de8300 R15: 0000000000022000 INFO: task syz-executor.4:21088 blocked for more than 144 seconds. Not tainted 5.17.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29464 pid:21088 ppid: 3637 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: 0033:0x7f4b3b473059 RSP: 002b:00007f4b39dc7218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4b3b586038 RCX: 00007f4b3b473059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4b3b586038 RBP: 00007f4b3b586030 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4b3b58603c R13: 00007ffeca9a64cf R14: 00007f4b39dc7300 R15: 0000000000022000 INFO: task syz-executor.4:21090 blocked for more than 144 seconds. Not tainted 5.17.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29464 pid:21090 ppid: 3637 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: 0033:0x7f4b3b473059 RSP: 002b:00007f4b39d85218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4b3b5861d8 RCX: 00007f4b3b473059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4b3b5861d8 RBP: 00007f4b3b5861d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4b3b5861dc R13: 00007ffeca9a64cf R14: 00007f4b39d85300 R15: 0000000000022000 INFO: task syz-executor.4:21091 blocked for more than 144 seconds. Not tainted 5.17.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29448 pid:21091 ppid: 3637 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: 0033:0x7f4b3b473059 RSP: 002b:00007f4b39d64168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: fffffffffffffffc RBX: 00007f4b3b5862a0 RCX: 00007f4b3b473059 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffc000 RBP: 00007f4b3b4cd08d R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeca9a64cf R14: 00007f4b39d64300 R15: 0000000000022000 INFO: task syz-executor.4:21092 blocked for more than 144 seconds. Not tainted 5.17.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29176 pid:21092 ppid: 3637 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: 0033:0x7f4b3b473059 RSP: 002b:00007f4b39d43218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4b3b586378 RCX: 00007f4b3b473059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4b3b586378 RBP: 00007f4b3b586370 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4b3b58637c R13: 00007ffeca9a64cf R14: 00007f4b39d43300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bb83aa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460 2 locks held by getty/3282: #0: ffff88807f348098 (&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 1 lock held by syz-executor.4/21078: #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793 1 lock held by syz-executor.4/21084: #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793 1 lock held by syz-executor.4/21088: #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793 2 locks held by syz-executor.4/21089: 1 lock held by syz-executor.4/21090: #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793 1 lock held by syz-executor.4/21091: #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793 1 lock held by syz-executor.4/21092: #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88807e532428 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2a30 kernel/exit.c:793 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.17.0-rc1-syzkaller #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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 21089 Comm: syz-executor.4 Not tainted 5.17.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_release kernel/locking/lockdep.c:5300 [inline] RIP: 0010:lock_release+0x1c3/0x720 kernel/locking/lockdep.c:5659 Code: 8b 05 cd 85 37 0c 85 c0 0f 84 08 02 00 00 4d 8d b7 58 0a 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e b9 04 00 00 45 8b af 58 0a 00 00 45 85 ed RSP: 0018:ffffc900049bfa98 EFLAGS: 00000016 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000000001 RDX: 1ffff1100f49088b RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffff92000937f55 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88807c1e6ca0 R13: ffff88807c1e6930 R14: ffff88807a484458 R15: ffff88807a483a00 FS: 00007f4b39da6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c01f41b0a0 CR3: 0000000027453000 CR4: 0000000000350ef0 Call Trace: __mutex_unlock_slowpath+0x99/0x5e0 kernel/locking/mutex.c:893 perf_mmap+0x7ba/0x1790 kernel/events/core.c:6335 call_mmap include/linux/fs.h:2079 [inline] mmap_region+0xd88/0x1630 mm/mmap.c:1793 do_mmap+0x869/0xfb0 mm/mmap.c:1582 vm_mmap_pgoff+0x1b7/0x290 mm/util.c:519 ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1630 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: 0033:0x7f4b3b473059 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4b39da6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f4b3b586100 RCX: 00007f4b3b473059 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffc000 RBP: 00007f4b3b4cd08d R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeca9a64cf R14: 00007f4b39da6300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 8b 05 cd 85 37 0c mov 0xc3785cd(%rip),%eax # 0xc3785d3 6: 85 c0 test %eax,%eax 8: 0f 84 08 02 00 00 je 0x216 e: 4d 8d b7 58 0a 00 00 lea 0xa58(%r15),%r14 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 4c 89 f2 mov %r14,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 74 08 je 0x36 2e: 3c 03 cmp $0x3,%al 30: 0f 8e b9 04 00 00 jle 0x4ef 36: 45 8b af 58 0a 00 00 mov 0xa58(%r15),%r13d 3d: 45 85 ed test %r13d,%r13d