Extracting prog: 2m13.304806177s
Minimizing prog: 11m23.213010147s
Simplifying prog options: 0s
Extracting C: 33.166107327s
Simplifying C: 9m11.358528529s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
detailed listing:
executing program 0:
r0 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000380)=ANY=[@ANYBLOB="180000000000000000000000000000001805000020646c2500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000000000000b7030000b90600008500000004000000850000002300000095"], &(0x7f0000000200)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x90)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000002c0)={&(0x7f0000000480)='sched_migrate_task\x00', r0}, 0x18)

program crashed: possible deadlock in console_lock_spinning_enable
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000380)=ANY=[@ANYBLOB="180000000000000000000000000000001805000020646c2500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000000000000b7030000b90600008500000004000000850000002300000095"], &(0x7f0000000200)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x90)

program did not crash
testing program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_RAW_TRACEPOINT_OPEN
detailed listing:
executing program 0:
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000002c0)={&(0x7f0000000480)='sched_migrate_task\x00'}, 0x18)

program did not crash
testing program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
detailed listing:
executing program 0:
r0 = bpf$PROG_LOAD(0x5, 0x0, 0x0)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000002c0)={&(0x7f0000000480)='sched_migrate_task\x00', r0}, 0x18)

program did not crash
testing program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
detailed listing:
executing program 0:
r0 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, 0x0, &(0x7f0000000200)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000002c0)={&(0x7f0000000480)='sched_migrate_task\x00', r0}, 0x18)

program did not crash
testing program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
detailed listing:
executing program 0:
r0 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000380)=ANY=[@ANYBLOB], &(0x7f0000000200)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000002c0)={&(0x7f0000000480)='sched_migrate_task\x00', r0}, 0x18)

program did not crash
testing program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
detailed listing:
executing program 0:
r0 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000380)=ANY=[@ANYBLOB="180000000000000000000000000000001805000020646c2500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000000000000b7030000b90600008500000004000000850000002300000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000002c0)={&(0x7f0000000480)='sched_migrate_task\x00', r0}, 0x18)

program did not crash
testing program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000380)=ANY=[@ANYBLOB="180000000000000000000000000000001805000020646c2500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000000000000b7030000b90600008500000004000000850000002300000095"], &(0x7f0000000200)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x90)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, 0x0, 0x0)

program did not crash
testing program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
detailed listing:
executing program 0:
r0 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000380)=ANY=[@ANYBLOB="180000000000000000000000000000001805000020646c2500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000000000000b7030000b90600008500000004000000850000002300000095"], &(0x7f0000000200)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x90)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000002c0)={0x0, r0}, 0x18)

program did not crash
extracting C reproducer
testing compiled C program (duration=58.593812392s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program crashed: possible deadlock in console_lock_spinning_enable
simplifying C reproducer
testing compiled C program (duration=58.593812392s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program crashed: possible deadlock in console_lock_spinning_enable
testing compiled C program (duration=58.593812392s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program did not crash
testing compiled C program (duration=58.593812392s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program crashed: possible deadlock in console_lock_spinning_enable
testing compiled C program (duration=58.593812392s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program crashed: possible deadlock in console_lock_spinning_enable
testing compiled C program (duration=58.593812392s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program crashed: possible deadlock in console_lock_spinning_enable
testing compiled C program (duration=58.593812392s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program crashed: WARNING in bpf_probe_read_compat
a never seen crash title: WARNING in bpf_probe_read_compat, ignore
testing compiled C program (duration=58.593812392s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program crashed: possible deadlock in try_to_wake_up
a never seen crash title: possible deadlock in try_to_wake_up, ignore
testing compiled C program (duration=58.593812392s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN
program crashed: WARNING in bpf_probe_read_compat
a never seen crash title: WARNING in bpf_probe_read_compat, ignore
reproducing took 23m21.042473829s
repro crashed as (corrupted=false):
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
5.15.175-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor164/4193 is trying to acquire lock:
ffffffff8cb148a0 (console_owner){-...}-{0:0}, at: console_lock_spinning_enable+0x2c/0x60 kernel/printk/printk.c:1802

but task is already holding lock:
ffff888029d66368 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4027

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&p->pi_lock){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4027
       __wake_up_common+0x2a0/0x4e0 kernel/sched/wait.c:108
       __wake_up_common_lock kernel/sched/wait.c:138 [inline]
       __wake_up+0x112/0x1c0 kernel/sched/wait.c:157
       tty_port_default_wakeup+0xa8/0x100 drivers/tty/tty_port.c:51
       serial8250_tx_chars+0x60d/0x800 drivers/tty/serial/8250/8250_port.c:1828
       serial8250_handle_irq+0x505/0x600 drivers/tty/serial/8250/8250_port.c:1924
       serial8250_default_handle_irq+0xc8/0x1e0 drivers/tty/serial/8250/8250_port.c:1941
       serial8250_interrupt+0xa1/0x1e0 drivers/tty/serial/8250/8250_core.c:127
       __handle_irq_event_percpu+0x292/0xa70 kernel/irq/handle.c:156
       handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
       handle_irq_event+0xff/0x2b0 kernel/irq/handle.c:213
       handle_edge_irq+0x245/0xbf0 kernel/irq/chip.c:819
       generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
       handle_irq arch/x86/kernel/irq.c:231 [inline]
       __common_interrupt+0xd7/0x1f0 arch/x86/kernel/irq.c:250
       common_interrupt+0x59/0xd0 arch/x86/kernel/irq.c:240
       asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667

-> #2 (&tty->write_wait){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       __wake_up_common_lock kernel/sched/wait.c:137 [inline]
       __wake_up+0xf5/0x1c0 kernel/sched/wait.c:157
       tty_port_default_wakeup+0xa8/0x100 drivers/tty/tty_port.c:51
       serial8250_tx_chars+0x60d/0x800 drivers/tty/serial/8250/8250_port.c:1828
       serial8250_handle_irq+0x505/0x600 drivers/tty/serial/8250/8250_port.c:1924
       serial8250_default_handle_irq+0xc8/0x1e0 drivers/tty/serial/8250/8250_port.c:1941
       serial8250_interrupt+0xa1/0x1e0 drivers/tty/serial/8250/8250_core.c:127
       __handle_irq_event_percpu+0x292/0xa70 kernel/irq/handle.c:156
       handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
       handle_irq_event+0xff/0x2b0 kernel/irq/handle.c:213
       handle_edge_irq+0x245/0xbf0 kernel/irq/chip.c:819
       generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
       handle_irq arch/x86/kernel/irq.c:231 [inline]
       __common_interrupt+0xd7/0x1f0 arch/x86/kernel/irq.c:250
       common_interrupt+0xae/0xd0 arch/x86/kernel/irq.c:240
       asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
       _raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
       spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
       uart_write+0x6af/0x930 drivers/tty/serial/serial_core.c:592
       process_output_block drivers/tty/n_tty.c:592 [inline]
       n_tty_write+0xd7e/0x1280 drivers/tty/n_tty.c:2339
       do_tty_write drivers/tty/tty_io.c:1038 [inline]
       file_tty_write+0x561/0x920 drivers/tty/tty_io.c:1110
       call_write_iter include/linux/fs.h:2174 [inline]
       new_sync_write fs/read_write.c:507 [inline]
       vfs_write+0xacd/0xe50 fs/read_write.c:594
       ksys_write+0x1a2/0x2c0 fs/read_write.c:647
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x66/0xd0

-> #1 (&port_lock_key){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       serial8250_console_write+0x19d/0x1180 drivers/tty/serial/8250/8250_port.c:3354
       console_unlock+0xced/0x12b0 kernel/printk/printk.c:2744
       vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274
       _printk+0xd1/0x120 kernel/printk/printk.c:2299
       register_console+0x65a/0x940 kernel/printk/printk.c:3107
       univ8250_console_init+0x41/0x50 drivers/tty/serial/8250/8250_core.c:690
       console_init+0x18c/0x660 kernel/printk/printk.c:3207
       start_kernel+0x301/0x540 init/main.c:1076
       secondary_startup_64_no_verify+0xb1/0xbb

-> #0 (console_owner){-...}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3053 [inline]
       check_prevs_add kernel/locking/lockdep.c:3172 [inline]
       validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
       __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       console_lock_spinning_enable+0x51/0x60 kernel/printk/printk.c:1805
       console_unlock+0xa47/0x12b0 kernel/printk/printk.c:2741
       vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274
       _printk+0xd1/0x120 kernel/printk/printk.c:2299
       report_bug+0x1e5/0x2e0 lib/bug.c:195
       handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
       exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
       asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
       copy_from_user_nofault+0x15c/0x1c0
       bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
       ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
       bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277
       bpf_prog_ec105dade7fdaf27+0x35/0x710
       bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
       __bpf_prog_run include/linux/filter.h:628 [inline]
       bpf_prog_run include/linux/filter.h:635 [inline]
       __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
       bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1915
       trace_sched_migrate_task include/trace/events/sched.h:271 [inline]
       set_task_cpu+0x40f/0x480 kernel/sched/core.c:3065
       try_to_wake_up+0x660/0x1300 kernel/sched/core.c:4137
       hrtimer_wakeup+0x5e/0x70 kernel/time/hrtimer.c:1942
       __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
       __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752
       hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
       local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
       __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
       instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
       sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
       asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
       lookup_page_ext+0x0/0x120
       __set_page_owner+0x23/0x300 mm/page_owner.c:175
       prep_new_page mm/page_alloc.c:2426 [inline]
       get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192
       __alloc_pages+0x272/0x700 mm/page_alloc.c:5465
       __get_free_pages+0x8/0x30 mm/page_alloc.c:5502
       tlb_next_batch mm/mmu_gather.c:29 [inline]
       __tlb_remove_page_size+0x1fa/0x3e0 mm/mmu_gather.c:83
       __tlb_remove_page include/asm-generic/tlb.h:444 [inline]
       zap_pte_range mm/memory.c:1387 [inline]
       zap_pmd_range mm/memory.c:1505 [inline]
       zap_pud_range mm/memory.c:1534 [inline]
       zap_p4d_range mm/memory.c:1555 [inline]
       unmap_page_range+0x10d8/0x2630 mm/memory.c:1576
       unmap_vmas+0x1f8/0x390 mm/memory.c:1653
       exit_mmap+0x3b6/0x620 mm/mmap.c:3204
       __mmput+0x112/0x3b0 kernel/fork.c:1127
       exit_mm+0x688/0x7f0 kernel/exit.c:550
       do_exit+0x626/0x2480 kernel/exit.c:861
       do_group_exit+0x144/0x310 kernel/exit.c:996
       __do_sys_exit_group kernel/exit.c:1007 [inline]
       __se_sys_exit_group kernel/exit.c:1005 [inline]
       __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x66/0xd0

other info that might help us debug this:

Chain exists of:
  console_owner --> &tty->write_wait --> &p->pi_lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&p->pi_lock);
                               lock(&tty->write_wait);
                               lock(&p->pi_lock);
  lock(console_owner);

 *** DEADLOCK ***

4 locks held by syz-executor164/4193:
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pte_range mm/memory.c:1342 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pmd_range mm/memory.c:1505 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pud_range mm/memory.c:1534 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_p4d_range mm/memory.c:1555 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: unmap_page_range+0x9c3/0x2630 mm/memory.c:1576
 #1: ffff888029d66368 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4027
 #2: ffffffff8cb1fd20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
 #3: ffffffff8c9fc5e0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273

stack backtrace:
CPU: 0 PID: 4193 Comm: syz-executor164 Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133
 check_prev_add kernel/locking/lockdep.c:3053 [inline]
 check_prevs_add kernel/locking/lockdep.c:3172 [inline]
 validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 console_lock_spinning_enable+0x51/0x60 kernel/printk/printk.c:1805
 console_unlock+0xa47/0x12b0 kernel/printk/printk.c:2741
 vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274
 _printk+0xd1/0x120 kernel/printk/printk.c:2299
 report_bug+0x1e5/0x2e0 lib/bug.c:195
 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 5b c4 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 44 c4 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000007a30 EFLAGS: 00010006
RAX: ffffffff81aac09c RBX: 0000000000000000 RCX: ffff88802aa31dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aabfad R09: ffffed10055463b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000000006b9
R13: 0000000000000000 R14: 00000000000006b9 R15: ffffc90000007aa8
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277
 bpf_prog_ec105dade7fdaf27+0x35/0x710
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1915
 trace_sched_migrate_task include/trace/events/sched.h:271 [inline]
 set_task_cpu+0x40f/0x480 kernel/sched/core.c:3065
 try_to_wake_up+0x660/0x1300 kernel/sched/core.c:4137
 hrtimer_wakeup+0x5e/0x70 kernel/time/hrtimer.c:1942
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lookup_page_ext+0x0/0x120 mm/page_ext.c:207
Code: 00 48 3b 4c 24 40 75 0f 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3e 7e 6c 08 e8 f9 13 ae ff 0f 0b cc cc cc cc cc cc cc <41> 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 d7
RSP: 0018:ffffc90002dbf2c8 EFLAGS: 00000293
RAX: ffffffff81d10dab RBX: 0000000000000000 RCX: ffff88802aa31dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001d67cc0
RBP: ffffea0001d67cc0 R08: dffffc0000000000 R09: ffffed100eb3e600
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000002800
R13: ffff88813fffb768 R14: ffffea0001d67cc0 R15: 0000000000002800
 __set_page_owner+0x23/0x300 mm/page_owner.c:175
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465
 __get_free_pages+0x8/0x30 mm/page_alloc.c:5502
 tlb_next_batch mm/mmu_gather.c:29 [inline]
 __tlb_remove_page_size+0x1fa/0x3e0 mm/mmu_gather.c:83
 __tlb_remove_page include/asm-generic/tlb.h:444 [inline]
 zap_pte_range mm/memory.c:1387 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0x10d8/0x2630 mm/memory.c:1576
 unmap_vmas+0x1f8/0x390 mm/memory.c:1653
 exit_mmap+0x3b6/0x620 mm/mmap.c:3204
 __mmput+0x112/0x3b0 kernel/fork.c:1127
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 __do_sys_exit_group kernel/exit.c:1007 [inline]
 __se_sys_exit_group kernel/exit.c:1005 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f57aa6a1179
Code: Unable to access opcode bytes at RIP 0x7f57aa6a114f.
RSP: 002b:00007ffdf8d0caa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f57aa6a1179
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f57aa71c350 R08: ffffffffffffffb8 R09: 00007ffdf8d0cb2c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f57aa71c350
R13: 0000000000000000 R14: 00007f57aa71cda0 R15: 00007f57aa671bb0
 </TASK>
WARNING: CPU: 0 PID: 4193 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 0 PID: 4193 Comm: syz-executor164 Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 5b c4 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 44 c4 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000007a30 EFLAGS: 00010006
RAX: ffffffff81aac09c RBX: 0000000000000000 RCX: ffff88802aa31dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aabfad R09: ffffed10055463b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000000006b9
R13: 0000000000000000 R14: 00000000000006b9 R15: ffffc90000007aa8
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f57aa71d1b0 CR3: 0000000020389000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277
 bpf_prog_ec105dade7fdaf27+0x35/0x710
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1915
 trace_sched_migrate_task include/trace/events/sched.h:271 [inline]
 set_task_cpu+0x40f/0x480 kernel/sched/core.c:3065
 try_to_wake_up+0x660/0x1300 kernel/sched/core.c:4137
 hrtimer_wakeup+0x5e/0x70 kernel/time/hrtimer.c:1942
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lookup_page_ext+0x0/0x120 mm/page_ext.c:207
Code: 00 48 3b 4c 24 40 75 0f 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3e 7e 6c 08 e8 f9 13 ae ff 0f 0b cc cc cc cc cc cc cc <41> 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 d7
RSP: 0018:ffffc90002dbf2c8 EFLAGS: 00000293
RAX: ffffffff81d10dab RBX: 0000000000000000 RCX: ffff88802aa31dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001d67cc0
RBP: ffffea0001d67cc0 R08: dffffc0000000000 R09: ffffed100eb3e600
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000002800
R13: ffff88813fffb768 R14: ffffea0001d67cc0 R15: 0000000000002800
 __set_page_owner+0x23/0x300 mm/page_owner.c:175
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465
 __get_free_pages+0x8/0x30 mm/page_alloc.c:5502
 tlb_next_batch mm/mmu_gather.c:29 [inline]
 __tlb_remove_page_size+0x1fa/0x3e0 mm/mmu_gather.c:83
 __tlb_remove_page include/asm-generic/tlb.h:444 [inline]
 zap_pte_range mm/memory.c:1387 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0x10d8/0x2630 mm/memory.c:1576
 unmap_vmas+0x1f8/0x390 mm/memory.c:1653
 exit_mmap+0x3b6/0x620 mm/mmap.c:3204
 __mmput+0x112/0x3b0 kernel/fork.c:1127
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 __do_sys_exit_group kernel/exit.c:1007 [inline]
 __se_sys_exit_group kernel/exit.c:1005 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f57aa6a1179
Code: Unable to access opcode bytes at RIP 0x7f57aa6a114f.
RSP: 002b:00007ffdf8d0caa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f57aa6a1179
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f57aa71c350 R08: ffffffffffffffb8 R09: 00007ffdf8d0cb2c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f57aa71c350
R13: 0000000000000000 R14: 00007f57aa71cda0 R15: 00007f57aa671bb0
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 48 3b             	add    %cl,0x3b(%rax)
   3:	4c 24 40             	rex.WR and $0x40,%al
   6:	75 0f                	jne    0x17
   8:	48 8d 65 d8          	lea    -0x28(%rbp),%rsp
   c:	5b                   	pop    %rbx
   d:	41 5c                	pop    %r12
   f:	41 5d                	pop    %r13
  11:	41 5e                	pop    %r14
  13:	41 5f                	pop    %r15
  15:	5d                   	pop    %rbp
  16:	c3                   	ret
  17:	e8 3e 7e 6c 08       	call   0x86c7e5a
  1c:	e8 f9 13 ae ff       	call   0xffae141a
  21:	0f 0b                	ud2
  23:	cc                   	int3
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	cc                   	int3
  29:	cc                   	int3
* 2a:	41 57                	push   %r15 <-- trapping instruction
  2c:	41 56                	push   %r14
  2e:	41 54                	push   %r12
  30:	53                   	push   %rbx
  31:	49 89 fe             	mov    %rdi,%r14
  34:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  3b:	fc ff df
  3e:	e8                   	.byte 0xe8
  3f:	d7                   	xlat   %ds:(%rbx)

final repro crashed as (corrupted=false):
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
5.15.175-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor164/4193 is trying to acquire lock:
ffffffff8cb148a0 (console_owner){-...}-{0:0}, at: console_lock_spinning_enable+0x2c/0x60 kernel/printk/printk.c:1802

but task is already holding lock:
ffff888029d66368 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4027

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&p->pi_lock){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4027
       __wake_up_common+0x2a0/0x4e0 kernel/sched/wait.c:108
       __wake_up_common_lock kernel/sched/wait.c:138 [inline]
       __wake_up+0x112/0x1c0 kernel/sched/wait.c:157
       tty_port_default_wakeup+0xa8/0x100 drivers/tty/tty_port.c:51
       serial8250_tx_chars+0x60d/0x800 drivers/tty/serial/8250/8250_port.c:1828
       serial8250_handle_irq+0x505/0x600 drivers/tty/serial/8250/8250_port.c:1924
       serial8250_default_handle_irq+0xc8/0x1e0 drivers/tty/serial/8250/8250_port.c:1941
       serial8250_interrupt+0xa1/0x1e0 drivers/tty/serial/8250/8250_core.c:127
       __handle_irq_event_percpu+0x292/0xa70 kernel/irq/handle.c:156
       handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
       handle_irq_event+0xff/0x2b0 kernel/irq/handle.c:213
       handle_edge_irq+0x245/0xbf0 kernel/irq/chip.c:819
       generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
       handle_irq arch/x86/kernel/irq.c:231 [inline]
       __common_interrupt+0xd7/0x1f0 arch/x86/kernel/irq.c:250
       common_interrupt+0x59/0xd0 arch/x86/kernel/irq.c:240
       asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667

-> #2 (&tty->write_wait){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       __wake_up_common_lock kernel/sched/wait.c:137 [inline]
       __wake_up+0xf5/0x1c0 kernel/sched/wait.c:157
       tty_port_default_wakeup+0xa8/0x100 drivers/tty/tty_port.c:51
       serial8250_tx_chars+0x60d/0x800 drivers/tty/serial/8250/8250_port.c:1828
       serial8250_handle_irq+0x505/0x600 drivers/tty/serial/8250/8250_port.c:1924
       serial8250_default_handle_irq+0xc8/0x1e0 drivers/tty/serial/8250/8250_port.c:1941
       serial8250_interrupt+0xa1/0x1e0 drivers/tty/serial/8250/8250_core.c:127
       __handle_irq_event_percpu+0x292/0xa70 kernel/irq/handle.c:156
       handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
       handle_irq_event+0xff/0x2b0 kernel/irq/handle.c:213
       handle_edge_irq+0x245/0xbf0 kernel/irq/chip.c:819
       generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
       handle_irq arch/x86/kernel/irq.c:231 [inline]
       __common_interrupt+0xd7/0x1f0 arch/x86/kernel/irq.c:250
       common_interrupt+0xae/0xd0 arch/x86/kernel/irq.c:240
       asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
       _raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
       spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
       uart_write+0x6af/0x930 drivers/tty/serial/serial_core.c:592
       process_output_block drivers/tty/n_tty.c:592 [inline]
       n_tty_write+0xd7e/0x1280 drivers/tty/n_tty.c:2339
       do_tty_write drivers/tty/tty_io.c:1038 [inline]
       file_tty_write+0x561/0x920 drivers/tty/tty_io.c:1110
       call_write_iter include/linux/fs.h:2174 [inline]
       new_sync_write fs/read_write.c:507 [inline]
       vfs_write+0xacd/0xe50 fs/read_write.c:594
       ksys_write+0x1a2/0x2c0 fs/read_write.c:647
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x66/0xd0

-> #1 (&port_lock_key){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       serial8250_console_write+0x19d/0x1180 drivers/tty/serial/8250/8250_port.c:3354
       console_unlock+0xced/0x12b0 kernel/printk/printk.c:2744
       vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274
       _printk+0xd1/0x120 kernel/printk/printk.c:2299
       register_console+0x65a/0x940 kernel/printk/printk.c:3107
       univ8250_console_init+0x41/0x50 drivers/tty/serial/8250/8250_core.c:690
       console_init+0x18c/0x660 kernel/printk/printk.c:3207
       start_kernel+0x301/0x540 init/main.c:1076
       secondary_startup_64_no_verify+0xb1/0xbb

-> #0 (console_owner){-...}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3053 [inline]
       check_prevs_add kernel/locking/lockdep.c:3172 [inline]
       validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
       __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       console_lock_spinning_enable+0x51/0x60 kernel/printk/printk.c:1805
       console_unlock+0xa47/0x12b0 kernel/printk/printk.c:2741
       vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274
       _printk+0xd1/0x120 kernel/printk/printk.c:2299
       report_bug+0x1e5/0x2e0 lib/bug.c:195
       handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
       exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
       asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
       copy_from_user_nofault+0x15c/0x1c0
       bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
       ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
       bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277
       bpf_prog_ec105dade7fdaf27+0x35/0x710
       bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
       __bpf_prog_run include/linux/filter.h:628 [inline]
       bpf_prog_run include/linux/filter.h:635 [inline]
       __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
       bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1915
       trace_sched_migrate_task include/trace/events/sched.h:271 [inline]
       set_task_cpu+0x40f/0x480 kernel/sched/core.c:3065
       try_to_wake_up+0x660/0x1300 kernel/sched/core.c:4137
       hrtimer_wakeup+0x5e/0x70 kernel/time/hrtimer.c:1942
       __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
       __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752
       hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
       local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
       __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
       instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
       sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
       asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
       lookup_page_ext+0x0/0x120
       __set_page_owner+0x23/0x300 mm/page_owner.c:175
       prep_new_page mm/page_alloc.c:2426 [inline]
       get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192
       __alloc_pages+0x272/0x700 mm/page_alloc.c:5465
       __get_free_pages+0x8/0x30 mm/page_alloc.c:5502
       tlb_next_batch mm/mmu_gather.c:29 [inline]
       __tlb_remove_page_size+0x1fa/0x3e0 mm/mmu_gather.c:83
       __tlb_remove_page include/asm-generic/tlb.h:444 [inline]
       zap_pte_range mm/memory.c:1387 [inline]
       zap_pmd_range mm/memory.c:1505 [inline]
       zap_pud_range mm/memory.c:1534 [inline]
       zap_p4d_range mm/memory.c:1555 [inline]
       unmap_page_range+0x10d8/0x2630 mm/memory.c:1576
       unmap_vmas+0x1f8/0x390 mm/memory.c:1653
       exit_mmap+0x3b6/0x620 mm/mmap.c:3204
       __mmput+0x112/0x3b0 kernel/fork.c:1127
       exit_mm+0x688/0x7f0 kernel/exit.c:550
       do_exit+0x626/0x2480 kernel/exit.c:861
       do_group_exit+0x144/0x310 kernel/exit.c:996
       __do_sys_exit_group kernel/exit.c:1007 [inline]
       __se_sys_exit_group kernel/exit.c:1005 [inline]
       __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x66/0xd0

other info that might help us debug this:

Chain exists of:
  console_owner --> &tty->write_wait --> &p->pi_lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&p->pi_lock);
                               lock(&tty->write_wait);
                               lock(&p->pi_lock);
  lock(console_owner);

 *** DEADLOCK ***

4 locks held by syz-executor164/4193:
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pte_range mm/memory.c:1342 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pmd_range mm/memory.c:1505 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pud_range mm/memory.c:1534 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_p4d_range mm/memory.c:1555 [inline]
 #0: ffff88802297de58 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: unmap_page_range+0x9c3/0x2630 mm/memory.c:1576
 #1: ffff888029d66368 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4027
 #2: ffffffff8cb1fd20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
 #3: ffffffff8c9fc5e0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273

stack backtrace:
CPU: 0 PID: 4193 Comm: syz-executor164 Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133
 check_prev_add kernel/locking/lockdep.c:3053 [inline]
 check_prevs_add kernel/locking/lockdep.c:3172 [inline]
 validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 console_lock_spinning_enable+0x51/0x60 kernel/printk/printk.c:1805
 console_unlock+0xa47/0x12b0 kernel/printk/printk.c:2741
 vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274
 _printk+0xd1/0x120 kernel/printk/printk.c:2299
 report_bug+0x1e5/0x2e0 lib/bug.c:195
 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 5b c4 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 44 c4 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000007a30 EFLAGS: 00010006
RAX: ffffffff81aac09c RBX: 0000000000000000 RCX: ffff88802aa31dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aabfad R09: ffffed10055463b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000000006b9
R13: 0000000000000000 R14: 00000000000006b9 R15: ffffc90000007aa8
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277
 bpf_prog_ec105dade7fdaf27+0x35/0x710
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1915
 trace_sched_migrate_task include/trace/events/sched.h:271 [inline]
 set_task_cpu+0x40f/0x480 kernel/sched/core.c:3065
 try_to_wake_up+0x660/0x1300 kernel/sched/core.c:4137
 hrtimer_wakeup+0x5e/0x70 kernel/time/hrtimer.c:1942
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lookup_page_ext+0x0/0x120 mm/page_ext.c:207
Code: 00 48 3b 4c 24 40 75 0f 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3e 7e 6c 08 e8 f9 13 ae ff 0f 0b cc cc cc cc cc cc cc <41> 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 d7
RSP: 0018:ffffc90002dbf2c8 EFLAGS: 00000293
RAX: ffffffff81d10dab RBX: 0000000000000000 RCX: ffff88802aa31dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001d67cc0
RBP: ffffea0001d67cc0 R08: dffffc0000000000 R09: ffffed100eb3e600
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000002800
R13: ffff88813fffb768 R14: ffffea0001d67cc0 R15: 0000000000002800
 __set_page_owner+0x23/0x300 mm/page_owner.c:175
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465
 __get_free_pages+0x8/0x30 mm/page_alloc.c:5502
 tlb_next_batch mm/mmu_gather.c:29 [inline]
 __tlb_remove_page_size+0x1fa/0x3e0 mm/mmu_gather.c:83
 __tlb_remove_page include/asm-generic/tlb.h:444 [inline]
 zap_pte_range mm/memory.c:1387 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0x10d8/0x2630 mm/memory.c:1576
 unmap_vmas+0x1f8/0x390 mm/memory.c:1653
 exit_mmap+0x3b6/0x620 mm/mmap.c:3204
 __mmput+0x112/0x3b0 kernel/fork.c:1127
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 __do_sys_exit_group kernel/exit.c:1007 [inline]
 __se_sys_exit_group kernel/exit.c:1005 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f57aa6a1179
Code: Unable to access opcode bytes at RIP 0x7f57aa6a114f.
RSP: 002b:00007ffdf8d0caa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f57aa6a1179
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f57aa71c350 R08: ffffffffffffffb8 R09: 00007ffdf8d0cb2c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f57aa71c350
R13: 0000000000000000 R14: 00007f57aa71cda0 R15: 00007f57aa671bb0
 </TASK>
WARNING: CPU: 0 PID: 4193 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 0 PID: 4193 Comm: syz-executor164 Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 5b c4 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 44 c4 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000007a30 EFLAGS: 00010006
RAX: ffffffff81aac09c RBX: 0000000000000000 RCX: ffff88802aa31dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aabfad R09: ffffed10055463b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000000006b9
R13: 0000000000000000 R14: 00000000000006b9 R15: ffffc90000007aa8
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f57aa71d1b0 CR3: 0000000020389000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277
 bpf_prog_ec105dade7fdaf27+0x35/0x710
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1915
 trace_sched_migrate_task include/trace/events/sched.h:271 [inline]
 set_task_cpu+0x40f/0x480 kernel/sched/core.c:3065
 try_to_wake_up+0x660/0x1300 kernel/sched/core.c:4137
 hrtimer_wakeup+0x5e/0x70 kernel/time/hrtimer.c:1942
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lookup_page_ext+0x0/0x120 mm/page_ext.c:207
Code: 00 48 3b 4c 24 40 75 0f 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3e 7e 6c 08 e8 f9 13 ae ff 0f 0b cc cc cc cc cc cc cc <41> 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 d7
RSP: 0018:ffffc90002dbf2c8 EFLAGS: 00000293
RAX: ffffffff81d10dab RBX: 0000000000000000 RCX: ffff88802aa31dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001d67cc0
RBP: ffffea0001d67cc0 R08: dffffc0000000000 R09: ffffed100eb3e600
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000002800
R13: ffff88813fffb768 R14: ffffea0001d67cc0 R15: 0000000000002800
 __set_page_owner+0x23/0x300 mm/page_owner.c:175
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465
 __get_free_pages+0x8/0x30 mm/page_alloc.c:5502
 tlb_next_batch mm/mmu_gather.c:29 [inline]
 __tlb_remove_page_size+0x1fa/0x3e0 mm/mmu_gather.c:83
 __tlb_remove_page include/asm-generic/tlb.h:444 [inline]
 zap_pte_range mm/memory.c:1387 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0x10d8/0x2630 mm/memory.c:1576
 unmap_vmas+0x1f8/0x390 mm/memory.c:1653
 exit_mmap+0x3b6/0x620 mm/mmap.c:3204
 __mmput+0x112/0x3b0 kernel/fork.c:1127
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 __do_sys_exit_group kernel/exit.c:1007 [inline]
 __se_sys_exit_group kernel/exit.c:1005 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f57aa6a1179
Code: Unable to access opcode bytes at RIP 0x7f57aa6a114f.
RSP: 002b:00007ffdf8d0caa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f57aa6a1179
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f57aa71c350 R08: ffffffffffffffb8 R09: 00007ffdf8d0cb2c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f57aa71c350
R13: 0000000000000000 R14: 00007f57aa71cda0 R15: 00007f57aa671bb0
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 48 3b             	add    %cl,0x3b(%rax)
   3:	4c 24 40             	rex.WR and $0x40,%al
   6:	75 0f                	jne    0x17
   8:	48 8d 65 d8          	lea    -0x28(%rbp),%rsp
   c:	5b                   	pop    %rbx
   d:	41 5c                	pop    %r12
   f:	41 5d                	pop    %r13
  11:	41 5e                	pop    %r14
  13:	41 5f                	pop    %r15
  15:	5d                   	pop    %rbp
  16:	c3                   	ret
  17:	e8 3e 7e 6c 08       	call   0x86c7e5a
  1c:	e8 f9 13 ae ff       	call   0xffae141a
  21:	0f 0b                	ud2
  23:	cc                   	int3
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	cc                   	int3
  29:	cc                   	int3
* 2a:	41 57                	push   %r15 <-- trapping instruction
  2c:	41 56                	push   %r14
  2e:	41 54                	push   %r12
  30:	53                   	push   %rbx
  31:	49 89 fe             	mov    %rdi,%r14
  34:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  3b:	fc ff df
  3e:	e8                   	.byte 0xe8
  3f:	d7                   	xlat   %ds:(%rbx)