INFO: task syz-executor.0:6550 blocked for more than 143 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28272 pid: 6550 ppid: 6471 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 tioclinux+0x126/0x560 drivers/tty/vt/vt.c:3204 vt_ioctl+0x229a/0x2b10 drivers/tty/vt/vt_ioctl.c:762 tty_ioctl+0xbbd/0x1670 drivers/tty/tty_io.c:2805 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 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: 0033:0x7f57f968cae9 RSP: 002b:00007f57f6c02188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f57f979ff60 RCX: 00007f57f968cae9 RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00007f57f96e6f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe1a1124f R14: 00007f57f6c02300 R15: 0000000000022000 INFO: task syz-executor.0:6557 blocked for more than 143 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29392 pid: 6557 ppid: 6471 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 tioclinux+0x126/0x560 drivers/tty/vt/vt.c:3204 vt_ioctl+0x229a/0x2b10 drivers/tty/vt/vt_ioctl.c:762 tty_ioctl+0xbbd/0x1670 drivers/tty/tty_io.c:2805 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 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: 0033:0x7f57f968cae9 RSP: 002b:00007f57f6be1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f57f97a0020 RCX: 00007f57f968cae9 RDX: 00000000200000c0 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00007f57f96e6f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe1a1124f R14: 00007f57f6be1300 R15: 0000000000022000 INFO: task syz-executor.0:6562 blocked for more than 143 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28496 pid: 6562 ppid: 6471 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 tioclinux+0x126/0x560 drivers/tty/vt/vt.c:3204 vt_ioctl+0x229a/0x2b10 drivers/tty/vt/vt_ioctl.c:762 tty_ioctl+0xbbd/0x1670 drivers/tty/tty_io.c:2805 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 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: 0033:0x7f57f968cae9 RSP: 002b:00007f57f6bc0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f57f97a00e0 RCX: 00007f57f968cae9 RDX: 00000000200000c0 RSI: 000000000000541c RDI: 0000000000000005 RBP: 00007f57f96e6f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe1a1124f R14: 00007f57f6bc0300 R15: 0000000000022000 INFO: task syz-executor.5:6551 blocked for more than 144 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27344 pid: 6551 ppid: 12133 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 tioclinux+0x126/0x560 drivers/tty/vt/vt.c:3204 vt_ioctl+0x229a/0x2b10 drivers/tty/vt/vt_ioctl.c:762 tty_ioctl+0xbbd/0x1670 drivers/tty/tty_io.c:2805 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 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: 0033:0x7f9ec81cbae9 RSP: 002b:00007f9ec5741188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9ec82def60 RCX: 00007f9ec81cbae9 RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000005 RBP: 00007f9ec8225f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca3b98dcf R14: 00007f9ec5741300 R15: 0000000000022000 INFO: task syz-executor.5:6561 blocked for more than 144 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:29392 pid: 6561 ppid: 12133 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 tioclinux+0x126/0x560 drivers/tty/vt/vt.c:3204 vt_ioctl+0x229a/0x2b10 drivers/tty/vt/vt_ioctl.c:762 tty_ioctl+0xbbd/0x1670 drivers/tty/tty_io.c:2805 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 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: 0033:0x7f9ec81cbae9 RSP: 002b:00007f9ec5720188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9ec82df020 RCX: 00007f9ec81cbae9 RDX: 00000000200000c0 RSI: 000000000000541c RDI: 0000000000000005 RBP: 00007f9ec8225f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca3b98dcf R14: 00007f9ec5720300 R15: 0000000000022000 INFO: task syz-executor.5:6568 blocked for more than 144 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28496 pid: 6568 ppid: 12133 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382 __mutex_lock_common kernel/locking/mutex.c:680 [inline] __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740 paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 tioclinux+0x126/0x560 drivers/tty/vt/vt.c:3204 vt_ioctl+0x229a/0x2b10 drivers/tty/vt/vt_ioctl.c:762 tty_ioctl+0xbbd/0x1670 drivers/tty/tty_io.c:2805 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 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: 0033:0x7f9ec81cbae9 RSP: 002b:00007f9ec56ff188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9ec82df0e0 RCX: 00007f9ec81cbae9 RDX: 00000000200000c0 RSI: 000000000000541c RDI: 0000000000000006 RBP: 00007f9ec8225f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca3b98dcf R14: 00007f9ec56ff300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8b983960 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 1 lock held by in:imklog/6167: #0: ffff888072d9f270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990 2 locks held by login/2943: #0: ffff88803366f1c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_lock+0xbd/0x120 drivers/tty/tty_mutex.c:20 #1: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:300 [inline] #1: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock+0x61/0xb0 drivers/tty/tty_ldisc.c:324 2 locks held by syz-executor.2/6540: #0: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffff888010c790b8 (&buf->lock){+.+.}-{3:3}, at: paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 2 locks held by syz-executor.0/6550: #0: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffff888010c790b8 (&buf->lock){+.+.}-{3:3}, at: paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 2 locks held by syz-executor.0/6557: #0: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffff888010c790b8 (&buf->lock){+.+.}-{3:3}, at: paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 2 locks held by syz-executor.0/6562: #0: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffff888010c790b8 (&buf->lock){+.+.}-{3:3}, at: paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 2 locks held by syz-executor.5/6551: #0: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffff888010c790b8 (&buf->lock){+.+.}-{3:3}, at: paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 2 locks held by syz-executor.5/6561: #0: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffff888010c790b8 (&buf->lock){+.+.}-{3:3}, at: paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 2 locks held by syz-executor.5/6568: #0: ffff88803366f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffff888010c790b8 (&buf->lock){+.+.}-{3:3}, at: paste_selection+0x110/0x4c0 drivers/tty/vt/selection.c:390 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-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:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:295 kthread+0x405/0x4f0 kernel/kthread.c:327 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: 2916 Comm: systemd-journal Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_preempt_read_exit kernel/rcu/tree_plugin.h:382 [inline] RIP: 0010:__rcu_read_unlock+0x6e/0x570 kernel/rcu/tree_plugin.h:419 Code: 8b 24 25 40 70 02 00 49 8d bc 24 3c 04 00 00 8b 9d 3c 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 eb 01 83 c0 03 38 d0 7c 08 84 d2 0f 85 cc 01 RSP: 0018:ffffc90002b4fa98 EFLAGS: 00000217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81849ecc RDI: ffff88807d19213c RBP: ffff88807d191d00 R08: 0000000000000048 R09: 0000000000000001 R10: ffffffff81849ebf R11: 0000000000000000 R12: ffff88807d191d00 R13: 0000000000000000 R14: ffff88807d191d00 R15: 0000000000000cc0 FS: 00007fef03baf8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fef01217018 CR3: 000000001b745000 CR4: 0000000000350ee0 Call Trace: rcu_read_unlock include/linux/rcupdate.h:720 [inline] is_bpf_text_address+0x81/0x170 kernel/bpf/core.c:710 kernel_text_address kernel/extable.c:151 [inline] kernel_text_address+0xbd/0xf0 kernel/extable.c:120 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313 arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x83/0xb0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:259 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3213 [inline] slab_alloc mm/slub.c:3221 [inline] kmem_cache_alloc+0x209/0x390 mm/slub.c:3226 getname_flags.part.0+0x50/0x4f0 fs/namei.c:138 getname_flags include/linux/audit.h:323 [inline] getname fs/namei.c:217 [inline] __do_sys_mkdir fs/namei.c:3929 [inline] __se_sys_mkdir fs/namei.c:3927 [inline] __x64_sys_mkdir+0xda/0x140 fs/namei.c:3927 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: 0033:0x7fef02e6a687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffd9ce4c4c8 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffd9ce4f3e0 RCX: 00007fef02e6a687 RDX: 00007fef038dba00 RSI: 00000000000001ed RDI: 000055a1a089d8a0 RBP: 00007ffd9ce4c500 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffd9ce4f3e0 R15: 00007ffd9ce4c9f0 ---------------- Code disassembly (best guess): 0: 8b 24 25 40 70 02 00 mov 0x27040,%esp 7: 49 8d bc 24 3c 04 00 lea 0x43c(%r12),%rdi e: 00 f: 8b 9d 3c 04 00 00 mov 0x43c(%rbp),%ebx 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 eb 01 sub $0x1,%ebx 33: 83 c0 03 add $0x3,%eax 36: 38 d0 cmp %dl,%al 38: 7c 08 jl 0x42 3a: 84 d2 test %dl,%dl 3c: 0f .byte 0xf 3d: 85 cc test %ecx,%esp 3f: 01 .byte 0x1