Extracting prog: 3m16.54129258s
Minimizing prog: 16m38.240130772s
Simplifying prog options: 0s
Extracting C: 1m13.690034034s
Simplifying C: 10m7.584271932s


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:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
r2 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r2, 0x40081271, &(0x7f0000000000)=0x2000)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
r2 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r2, 0x40081271, &(0x7f0000000000)=0x2000)

program crashed: kernel BUG in __filemap_add_folio
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
ioctl$BLKBSZSET(0xffffffffffffffff, 0x40081271, &(0x7f0000000000)=0x2000)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
dup(r0)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r1, 0x40081271, &(0x7f0000000000)=0x2000)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, 0xffffffffffffffff, 0x2000)
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r0, 0x40081271, &(0x7f0000000000)=0x2000)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = dup(0xffffffffffffffff)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r0, 0x2000)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r1, 0x40081271, &(0x7f0000000000)=0x2000)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, 0x0, 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
r2 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r2, 0x40081271, &(0x7f0000000000)=0x2000)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
r2 = openat$nullb(0xffffffffffffff9c, 0x0, 0x169802, 0x0)
ioctl$BLKBSZSET(r2, 0x40081271, &(0x7f0000000000)=0x2000)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
r2 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r2, 0x40081271, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
program crashed: kernel BUG in __filemap_add_folio
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
program did not crash
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
program crashed: kernel BUG in __filemap_add_folio
testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
r2 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r2, 0x40081271, &(0x7f0000000000)=0x2000)

program crashed: kernel BUG in __filemap_add_folio
validation run: crashed=true
testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
r2 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r2, 0x40081271, &(0x7f0000000000)=0x2000)

program crashed: kernel BUG in __filemap_add_folio
validation run: crashed=true
testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-dup-mmap-openat$nullb-ioctl$BLKBSZSET
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0x4000000080602, 0x0)
r1 = dup(r0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb, 0x13, r1, 0x2000)
r2 = openat$nullb(0xffffffffffffff9c, &(0x7f0000001000), 0x169802, 0x0)
ioctl$BLKBSZSET(r2, 0x40081271, &(0x7f0000000000)=0x2000)

program crashed: kernel BUG in __filemap_add_folio
validation run: crashed=true
reproducing took 36m41.350268569s
repro crashed as (corrupted=false):
 __do_sys_exit_group kernel/exit.c:1123 [inline]
 __se_sys_exit_group kernel/exit.c:1121 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121
 __pfx_syscall_get_nr+0x0/0x10 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6158 Comm: syz.2.80 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__filemap_add_folio+0x118b/0x12d0 mm/filemap.c:858
Code: 98 c7 ff 4c 89 e7 48 c7 c6 c0 b1 94 8b e8 2d b1 2d ff 90 0f 0b e8 c5 98 c7 ff 4c 89 e7 48 c7 c6 a0 a8 94 8b e8 16 b1 2d ff 90 <0f> 0b e8 ae 98 c7 ff 4c 89 e7 48 c7 c6 c0 b1 94 8b e8 ff b0 2d ff
RSP: 0018:ffffc90003d6f5c0 EFLAGS: 00010246
RAX: c8997e35a498de00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa56ad RDI: 00000000ffffffff
RBP: ffffc90003d6f740 R08: ffffffff8fc3ce77 R09: 1ffffffff1f879ce
R10: dffffc0000000000 R11: fffffbfff1f879cf R12: ffffea0001d71740
R13: dffffc0000000000 R14: ffffea0001d71748 R15: 0000000000000001
FS:  0000555569c61500(0000) GS:ffff8881259e6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa371b156c0 CR3: 0000000072662000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0x26d/0x540 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:453 [inline]
 page_cache_ra_order+0x6a7/0xe50 mm/readahead.c:512
 do_sync_mmap_readahead+0x66a/0x870 mm/filemap.c:3400
 filemap_fault+0x6ac/0x1290 mm/filemap.c:3549
 __do_fault+0x138/0x390 mm/memory.c:5320
 do_shared_fault mm/memory.c:5819 [inline]
 do_fault mm/memory.c:5893 [inline]
 do_pte_missing+0x6ad/0x3330 mm/memory.c:4401
 handle_pte_fault mm/memory.c:6273 [inline]
 __handle_mm_fault mm/memory.c:6411 [inline]
 handle_mm_fault+0x1b26/0x32b0 mm/memory.c:6580
 do_user_addr_fault+0xa7c/0x1380 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7faaebd57398
Code: fc 89 37 c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5 fa 7f 4c 17 f0 c3 66 0f 1f 84 00 00 00 00 00 48 8b 4c 16 f8 48 8b 36 <48> 89 37 48 89 4c 17 f8 c3 c5 fe 6f 54 16 e0 c5 fe 6f 5c 16 c0 c5
RSP: 002b:00007ffd76bcca48 EFLAGS: 00010202
RAX: 0000200000001000 RBX: 0000000000000004 RCX: 0030626c6c756e2f
RDX: 000000000000000c RSI: 6c756e2f7665642f RDI: 0000200000001000
RBP: 0000000000000000 R08: 0000001b2f820000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007faaebfe5fac
R13: 00007faaebfe5fa0 R14: fffffffffffffffe R15: 0000000000000006
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x118b/0x12d0 mm/filemap.c:858
Code: 98 c7 ff 4c 89 e7 48 c7 c6 c0 b1 94 8b e8 2d b1 2d ff 90 0f 0b e8 c5 98 c7 ff 4c 89 e7 48 c7 c6 a0 a8 94 8b e8 16 b1 2d ff 90 <0f> 0b e8 ae 98 c7 ff 4c 89 e7 48 c7 c6 c0 b1 94 8b e8 ff b0 2d ff
RSP: 0018:ffffc90003d6f5c0 EFLAGS: 00010246
RAX: c8997e35a498de00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa56ad RDI: 00000000ffffffff
RBP: ffffc90003d6f740 R08: ffffffff8fc3ce77 R09: 1ffffffff1f879ce
R10: dffffc0000000000 R11: fffffbfff1f879cf R12: ffffea0001d71740
R13: dffffc0000000000 R14: ffffea0001d71748 R15: 0000000000000001
FS:  0000555569c61500(0000) GS:ffff8881259e6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0020c9000 CR3: 0000000072662000 CR4: 00000000003526f0

final repro crashed as (corrupted=false):
 __do_sys_exit_group kernel/exit.c:1123 [inline]
 __se_sys_exit_group kernel/exit.c:1121 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121
 __pfx_syscall_get_nr+0x0/0x10 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6158 Comm: syz.2.80 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__filemap_add_folio+0x118b/0x12d0 mm/filemap.c:858
Code: 98 c7 ff 4c 89 e7 48 c7 c6 c0 b1 94 8b e8 2d b1 2d ff 90 0f 0b e8 c5 98 c7 ff 4c 89 e7 48 c7 c6 a0 a8 94 8b e8 16 b1 2d ff 90 <0f> 0b e8 ae 98 c7 ff 4c 89 e7 48 c7 c6 c0 b1 94 8b e8 ff b0 2d ff
RSP: 0018:ffffc90003d6f5c0 EFLAGS: 00010246
RAX: c8997e35a498de00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa56ad RDI: 00000000ffffffff
RBP: ffffc90003d6f740 R08: ffffffff8fc3ce77 R09: 1ffffffff1f879ce
R10: dffffc0000000000 R11: fffffbfff1f879cf R12: ffffea0001d71740
R13: dffffc0000000000 R14: ffffea0001d71748 R15: 0000000000000001
FS:  0000555569c61500(0000) GS:ffff8881259e6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa371b156c0 CR3: 0000000072662000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0x26d/0x540 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:453 [inline]
 page_cache_ra_order+0x6a7/0xe50 mm/readahead.c:512
 do_sync_mmap_readahead+0x66a/0x870 mm/filemap.c:3400
 filemap_fault+0x6ac/0x1290 mm/filemap.c:3549
 __do_fault+0x138/0x390 mm/memory.c:5320
 do_shared_fault mm/memory.c:5819 [inline]
 do_fault mm/memory.c:5893 [inline]
 do_pte_missing+0x6ad/0x3330 mm/memory.c:4401
 handle_pte_fault mm/memory.c:6273 [inline]
 __handle_mm_fault mm/memory.c:6411 [inline]
 handle_mm_fault+0x1b26/0x32b0 mm/memory.c:6580
 do_user_addr_fault+0xa7c/0x1380 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7faaebd57398
Code: fc 89 37 c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5 fa 7f 4c 17 f0 c3 66 0f 1f 84 00 00 00 00 00 48 8b 4c 16 f8 48 8b 36 <48> 89 37 48 89 4c 17 f8 c3 c5 fe 6f 54 16 e0 c5 fe 6f 5c 16 c0 c5
RSP: 002b:00007ffd76bcca48 EFLAGS: 00010202
RAX: 0000200000001000 RBX: 0000000000000004 RCX: 0030626c6c756e2f
RDX: 000000000000000c RSI: 6c756e2f7665642f RDI: 0000200000001000
RBP: 0000000000000000 R08: 0000001b2f820000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007faaebfe5fac
R13: 00007faaebfe5fa0 R14: fffffffffffffffe R15: 0000000000000006
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x118b/0x12d0 mm/filemap.c:858
Code: 98 c7 ff 4c 89 e7 48 c7 c6 c0 b1 94 8b e8 2d b1 2d ff 90 0f 0b e8 c5 98 c7 ff 4c 89 e7 48 c7 c6 a0 a8 94 8b e8 16 b1 2d ff 90 <0f> 0b e8 ae 98 c7 ff 4c 89 e7 48 c7 c6 c0 b1 94 8b e8 ff b0 2d ff
RSP: 0018:ffffc90003d6f5c0 EFLAGS: 00010246
RAX: c8997e35a498de00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa56ad RDI: 00000000ffffffff
RBP: ffffc90003d6f740 R08: ffffffff8fc3ce77 R09: 1ffffffff1f879ce
R10: dffffc0000000000 R11: fffffbfff1f879cf R12: ffffea0001d71740
R13: dffffc0000000000 R14: ffffea0001d71748 R15: 0000000000000001
FS:  0000555569c61500(0000) GS:ffff8881259e6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0020c9000 CR3: 0000000072662000 CR4: 00000000003526f0