Extracting prog: 1m6.071421583s
Minimizing prog: 8m48.787019079s
Simplifying prog options: 0s
Extracting C: 1m9.401394824s
Simplifying C: 5m22.905943433s


extracting reproducer from 30 programs
first checking the prog from the crash report
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program crashed: WARNING in bitmap_parse_user
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)

program did not crash
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
write$P9_RLOCK(0xffffffffffffffff, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program did not crash
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program did not crash
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program did not crash
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program did not crash
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, 0x0, &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program did not crash
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program did not crash
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program did not crash
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
program crashed: WARNING in bitmap_parse_user
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
program crashed: WARNING in bitmap_parse_user
testing compiled C program (duration=30s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
program crashed: WARNING in bitmap_parse_user
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
program crashed: WARNING in bitmap_parse_user
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
program crashed: WARNING in bitmap_parse_user
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
program crashed: WARNING in bitmap_parse_user
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
program crashed: WARNING in bitmap_parse_user
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
program crashed: WARNING in bitmap_parse_user
testing program (duration=30s, {Threaded:false Repeat:false 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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program crashed: WARNING in bitmap_parse_user
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false 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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program crashed: WARNING in bitmap_parse_user
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false 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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write$P9_RLOCK
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc_mnt\x00', 0x1ed)
mount(0x0, &(0x7f0000000240)='./proc_mnt\x00', &(0x7f0000000280)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc_mnt/irq/12/smp_affinity\x00', 0x1, 0x6)
write$P9_RLOCK(r0, &(0x7f0000000380)={0x8, 0x35, 0x3, 0x2}, 0xfffffce2)

program crashed: WARNING in bitmap_parse_user
validation run: crashed=true
reproducing took 19m37.140104858s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4498 at mm/page_alloc.c:5634 __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
Modules linked in:
CPU: 0 PID: 4498 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
pstate: 22400005 (nzCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
lr : __alloc_pages+0xac/0x544 mm/page_alloc.c:5628
sp : ffff8000221877c0
x29: ffff800022187880 x28: ffff8000163dd000 x27: 1ffff00002c7ba68
x26: ffff8000221877e0 x25: dfff800000000000 x24: ffff700004430efc
x23: 0000000000000002 x22: 0000000000000000 x21: 0000000000040cc0
x20: 0000000000000000 x19: 0000000000000013 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082dce18 x15: 0000000000000000
x14: 0000000000000005 x13: 1ffff00004430f00 x12: 0000000000000000
x11: 0000000000000000 x10: ffff700004430f05 x9 : 0000000000000001
x8 : ffff800018db3000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0x9c/0x1dc mm/slab_common.c:1077
 __do_kmalloc_node mm/slab_common.c:924 [inline]
 __kmalloc_node_track_caller+0x120/0x174 mm/slab_common.c:956
 memdup_user_nul+0x5c/0x228 mm/util.c:261
 bitmap_parse_user+0x34/0x88 lib/bitmap.c:464
 cpumask_parse_user include/linux/cpumask.h:725 [inline]
 write_irq_affinity+0x1a0/0x2f4 kernel/irq/proc.c:153
 irq_affinity_proc_write+0x38/0x4c kernel/irq/proc.c:182
 pde_write fs/proc/inode.c:340 [inline]
 proc_reg_write+0x184/0x2d4 fs/proc/inode.c:352
 vfs_write+0x2a8/0x7c8 fs/read_write.c:582
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
irq event stamp: 1914
hardirqs last  enabled at (1913): [<ffff80000805a8c8>] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline]
hardirqs last  enabled at (1913): [<ffff80000805a8c8>] el0_svc_common+0xa0/0x258 arch/arm64/kernel/syscall.c:105
hardirqs last disabled at (1914): [<ffff800011b9d7f8>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (1904): [<ffff800008031244>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (1902): [<ffff800008031210>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---

final repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4498 at mm/page_alloc.c:5634 __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
Modules linked in:
CPU: 0 PID: 4498 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
pstate: 22400005 (nzCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
lr : __alloc_pages+0xac/0x544 mm/page_alloc.c:5628
sp : ffff8000221877c0
x29: ffff800022187880 x28: ffff8000163dd000 x27: 1ffff00002c7ba68
x26: ffff8000221877e0 x25: dfff800000000000 x24: ffff700004430efc
x23: 0000000000000002 x22: 0000000000000000 x21: 0000000000040cc0
x20: 0000000000000000 x19: 0000000000000013 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082dce18 x15: 0000000000000000
x14: 0000000000000005 x13: 1ffff00004430f00 x12: 0000000000000000
x11: 0000000000000000 x10: ffff700004430f05 x9 : 0000000000000001
x8 : ffff800018db3000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0x9c/0x1dc mm/slab_common.c:1077
 __do_kmalloc_node mm/slab_common.c:924 [inline]
 __kmalloc_node_track_caller+0x120/0x174 mm/slab_common.c:956
 memdup_user_nul+0x5c/0x228 mm/util.c:261
 bitmap_parse_user+0x34/0x88 lib/bitmap.c:464
 cpumask_parse_user include/linux/cpumask.h:725 [inline]
 write_irq_affinity+0x1a0/0x2f4 kernel/irq/proc.c:153
 irq_affinity_proc_write+0x38/0x4c kernel/irq/proc.c:182
 pde_write fs/proc/inode.c:340 [inline]
 proc_reg_write+0x184/0x2d4 fs/proc/inode.c:352
 vfs_write+0x2a8/0x7c8 fs/read_write.c:582
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
irq event stamp: 1914
hardirqs last  enabled at (1913): [<ffff80000805a8c8>] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline]
hardirqs last  enabled at (1913): [<ffff80000805a8c8>] el0_svc_common+0xa0/0x258 arch/arm64/kernel/syscall.c:105
hardirqs last disabled at (1914): [<ffff800011b9d7f8>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (1904): [<ffff800008031244>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (1902): [<ffff800008031210>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---