Extracting prog: 3m25.416952896s
Minimizing prog: 15m18.318368371s
Simplifying prog options: 0s
Extracting C: 35.453816905s
Simplifying C: 10m17.725550352s


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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r1, 0x40081271, &(0x7f0000000980)=0x4000)

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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r1, 0x40081271, &(0x7f0000000980)=0x4000)

program crashed: kernel BUG in __filemap_add_folio
single: successfully extracted reproducer
found reproducer with 4 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$nullb-mmap-openat$nullb
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 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$nullb-mmap-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
ioctl$FS_IOC_SETFLAGS(0xffffffffffffffff, 0x40081271, &(0x7f0000000980)=0x4000)

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$nullb-openat$nullb-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000)

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}}): mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, 0xffffffffffffffff, 0x0)
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000)

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$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, 0x0, 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r1, 0x40081271, &(0x7f0000000980)=0x4000)

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$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
r1 = openat$nullb(0xffffffffffffff9c, 0x0, 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r1, 0x40081271, &(0x7f0000000980)=0x4000)

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$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r1, 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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
program crashed: kernel BUG in __filemap_add_folio
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
program did not crash
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r1, 0x40081271, &(0x7f0000000980)=0x4000)

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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r1, 0x40081271, &(0x7f0000000980)=0x4000)

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$nullb-mmap-openat$nullb-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000000), 0xa4242, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3000007, 0x38011, r0, 0x0)
r1 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x121003, 0x0)
ioctl$FS_IOC_SETFLAGS(r1, 0x40081271, &(0x7f0000000980)=0x4000)

program crashed: kernel BUG in __filemap_add_folio
validation run: crashed=true
reproducing took 34m56.390389933s
repro crashed as (corrupted=false):
 getname_flags+0xb8/0x540 fs/namei.c:146
 getname include/linux/fs.h:2498 [inline]
 __do_sys_symlinkat fs/namei.c:5562 [inline]
 __se_sys_symlinkat fs/namei.c:5559 [inline]
 __x64_sys_symlinkat+0x7a/0xb0 fs/namei.c:5559
 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: 1 UID: 0 PID: 6073 Comm: syz.0.40 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: 99 c7 ff 4c 89 e7 48 c7 c6 00 b1 94 8b e8 7d ab 2d ff 90 0f 0b e8 05 99 c7 ff 4c 89 e7 48 c7 c6 e0 a7 94 8b e8 66 ab 2d ff 90 <0f> 0b e8 ee 98 c7 ff 4c 89 e7 48 c7 c6 00 b1 94 8b e8 4f ab 2d ff
RSP: 0018:ffffc900037675c0 EFLAGS: 00010246
RAX: 7e5cdec020820500 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa54ce RDI: 00000000ffffffff
RBP: ffffc90003767740 R08: ffffffff8fc3cc77 R09: 1ffffffff1f8798e
R10: dffffc0000000000 R11: fffffbfff1f8798f R12: ffffea0001dcb0c0
R13: dffffc0000000000 R14: ffffea0001dcb0c8 R15: 0000000000000002
FS:  00005555819db500(0000) GS:ffff888125ae6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd84e08cc8 CR3: 0000000026c76000 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: 0033:0x7f950ab57398
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:00007ffc024636d8 EFLAGS: 00010202
RAX: 0000200000000080 RBX: 0000000000000004 RCX: 0030626c6c756e2f
RDX: 000000000000000c RSI: 6c756e2f7665642f RDI: 0000200000000080
RBP: 0000000000000000 R08: 0000001b2f720000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007f950ade5fac
R13: 00007f950ade5fa0 R14: fffffffffffffffe R15: 0000000000000006
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x118b/0x12d0 mm/filemap.c:858
Code: 99 c7 ff 4c 89 e7 48 c7 c6 00 b1 94 8b e8 7d ab 2d ff 90 0f 0b e8 05 99 c7 ff 4c 89 e7 48 c7 c6 e0 a7 94 8b e8 66 ab 2d ff 90 <0f> 0b e8 ee 98 c7 ff 4c 89 e7 48 c7 c6 00 b1 94 8b e8 4f ab 2d ff
RSP: 0018:ffffc900037675c0 EFLAGS: 00010246
RAX: 7e5cdec020820500 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa54ce RDI: 00000000ffffffff
RBP: ffffc90003767740 R08: ffffffff8fc3cc77 R09: 1ffffffff1f8798e
R10: dffffc0000000000 R11: fffffbfff1f8798f R12: ffffea0001dcb0c0
R13: dffffc0000000000 R14: ffffea0001dcb0c8 R15: 0000000000000002
FS:  00005555819db500(0000) GS:ffff8881259e6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0043e0000 CR3: 0000000026c76000 CR4: 00000000003526f0

final repro crashed as (corrupted=false):
 getname_flags+0xb8/0x540 fs/namei.c:146
 getname include/linux/fs.h:2498 [inline]
 __do_sys_symlinkat fs/namei.c:5562 [inline]
 __se_sys_symlinkat fs/namei.c:5559 [inline]
 __x64_sys_symlinkat+0x7a/0xb0 fs/namei.c:5559
 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: 1 UID: 0 PID: 6073 Comm: syz.0.40 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: 99 c7 ff 4c 89 e7 48 c7 c6 00 b1 94 8b e8 7d ab 2d ff 90 0f 0b e8 05 99 c7 ff 4c 89 e7 48 c7 c6 e0 a7 94 8b e8 66 ab 2d ff 90 <0f> 0b e8 ee 98 c7 ff 4c 89 e7 48 c7 c6 00 b1 94 8b e8 4f ab 2d ff
RSP: 0018:ffffc900037675c0 EFLAGS: 00010246
RAX: 7e5cdec020820500 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa54ce RDI: 00000000ffffffff
RBP: ffffc90003767740 R08: ffffffff8fc3cc77 R09: 1ffffffff1f8798e
R10: dffffc0000000000 R11: fffffbfff1f8798f R12: ffffea0001dcb0c0
R13: dffffc0000000000 R14: ffffea0001dcb0c8 R15: 0000000000000002
FS:  00005555819db500(0000) GS:ffff888125ae6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd84e08cc8 CR3: 0000000026c76000 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: 0033:0x7f950ab57398
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:00007ffc024636d8 EFLAGS: 00010202
RAX: 0000200000000080 RBX: 0000000000000004 RCX: 0030626c6c756e2f
RDX: 000000000000000c RSI: 6c756e2f7665642f RDI: 0000200000000080
RBP: 0000000000000000 R08: 0000001b2f720000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007f950ade5fac
R13: 00007f950ade5fa0 R14: fffffffffffffffe R15: 0000000000000006
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x118b/0x12d0 mm/filemap.c:858
Code: 99 c7 ff 4c 89 e7 48 c7 c6 00 b1 94 8b e8 7d ab 2d ff 90 0f 0b e8 05 99 c7 ff 4c 89 e7 48 c7 c6 e0 a7 94 8b e8 66 ab 2d ff 90 <0f> 0b e8 ee 98 c7 ff 4c 89 e7 48 c7 c6 00 b1 94 8b e8 4f ab 2d ff
RSP: 0018:ffffc900037675c0 EFLAGS: 00010246
RAX: 7e5cdec020820500 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa54ce RDI: 00000000ffffffff
RBP: ffffc90003767740 R08: ffffffff8fc3cc77 R09: 1ffffffff1f8798e
R10: dffffc0000000000 R11: fffffbfff1f8798f R12: ffffea0001dcb0c0
R13: dffffc0000000000 R14: ffffea0001dcb0c8 R15: 0000000000000002
FS:  00005555819db500(0000) GS:ffff8881259e6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0043e0000 CR3: 0000000026c76000 CR4: 00000000003526f0