Extracting prog: 1m56.851516844s
Minimizing prog: 3m39.137004296s
Simplifying prog options: 0s
Extracting C: 51.383063294s
Simplifying C: 6m27.170529121s


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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-syz_mount_image$ext4-syz_mount_image$exfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000001c0)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x8413, &(0x7f0000000100)={[{@delalloc}, {}, {@nodioread_nolock}, {@acl}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1}}, {@noblock_validity}, {@usrjquota}, {@jqfmt_vfsv0}, {@inode_readahead_blks={'inode_readahead_blks', 0x3d, 0x1000}}, {@inlinecrypt}, {@sysvgroups}]}, 0x18, 0x569, &(0x7f0000000780)="$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")
syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000180)='./file0\x00', 0x2008002, &(0x7f00000000c0)={[{@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1000}}, {@nobh}, {@quota}]}, 0x1, 0x560, &(0x7f0000000440)="$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")
syz_mount_image$exfat(0x0, &(0x7f0000000200)='./bus\x00', 0xe1c00, 0x0, 0x0, 0x0, &(0x7f0000000000))

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-syz_mount_image$ext4-syz_mount_image$exfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000001c0)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x8413, &(0x7f0000000100)={[{@delalloc}, {}, {@nodioread_nolock}, {@acl}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1}}, {@noblock_validity}, {@usrjquota}, {@jqfmt_vfsv0}, {@inode_readahead_blks={'inode_readahead_blks', 0x3d, 0x1000}}, {@inlinecrypt}, {@sysvgroups}]}, 0x18, 0x569, &(0x7f0000000780)="$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")
syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000180)='./file0\x00', 0x2008002, &(0x7f00000000c0)={[{@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1000}}, {@nobh}, {@quota}]}, 0x1, 0x560, &(0x7f0000000440)="$eJzs3c9vI1cdAPDvTH42u212oQeogF2gsKDV2htvu6p6abmAUFWpouLEYRsSbxTWXi+xU5oQifRvAAkkTvAncEDigNQTB24ckTgAohyQCkSgDRIHoxlPEjdxWLN2bDb+fKTZ+fFm5vuevTPv+dmZF8DEuhoRuxExGxFvRcRisT0ppni1M2X7PdzbWdnf21lJot1+829Jnp5ti65jMheKc85HxNe+EvHN5GTc5tb2veVarbpRrJdb9Qfl5tb2jfX68lp1rXq/Urm9dPvmS7derAytrFfqP/vgy+uvff2Xv/jk+7/Z/eJ3s2xdLNK6yzFMnaLPHMbJTEfEa2cRbAymivnsmPPB40kj4iMR8Zn8+l+Mqfx/JwBwnrXbi9Fe7F4HAM67NO8DS9JSRKRp0Qgodfrwno2FtNZotq7fbWzeX+30lV2KmfTueq168/Lc776d7zyTZOtLeVqenq9Xjq3fiojLEfGDuafy9dJKo7Y6niYPAEy8C931f0T8cy5NS6W+Du3xrR4A8MSYH3cGAICRU/8DwORR/wPA5Omj/i++7N8987wAAKPh8z8ATB71PwBMHvU/AEyUN15/PZva+8Xzr1ff3tq813j7xmq1ea9U31wprTQ2HpTWGo21/Jk99Uedr9ZoPFh6ITbfKbeqzVa5ubV9p97YvN+6kz/X+051ZiSlAgD+m8tX3vttEhG7Lz+VT9E1loO6Gs63dIh7AU+WqUEO1kCAJ5rRvmBy9VWF542EX595XoDx6Pkw7/meix/2o/8hiN8Zwf+Vax/vv//fGM9wvujZh8n1eP3/rww9H8DoPXb//x+Gmw9g9Nrt5PiY/7OHSd3eGOWoxADAWRrgJ3zt7w2rEQKM1aMG8x7K9/8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABwzlyMiG9FkpbyscDT7N+0VIp4OiIuxUxyd71WvRkRz8SViJiZy9aXxp1pAGBA6V+SYvyva4vPXzyeOpv8ay6fR8R3fvzmD99ZbrU2lrLtfz/cPncwfFjl6LgBxhUEAPr3p352yuvvSjHv+iD/cG9n5WA6wzye8MGXDgcfXdnf28mnTsp0tNvtdsR83pZY+EcS08Ux8xHxXERMDSH+7rsR8bFe5U/yvpFLxcin3fGjiP30SOOnH4qf5mmdefbyfXQIeYFJ8152/3m11/WXxtV83vv6n8/vUIPL73/zEQf3vv2u+NNFpKke8bNr/mq/MV741VdPbGwvdtLejXhuulf85DB+ckr85/uM//tPfOr7r5yS1v5JxLXoHb87VrlVf1Bubm3fWK8vr1XXqvcrldtLt2++dOvFSjnvoy4f9FSf9NeXrz9zWt6y8i+cEr/zzl84Vv7Zw2M/12f5f/rvt77x6aPVuePxv/DZ3u//s/m89+uf1Ymf7zP+8sLPTx2+O4u/ekr5H/X+X+8z/vt/3l7tc1cAYASaW9v3lmu16sZAC9mn0GGc58RClsX+dj5oLg4W9I+RLxy9LEkkMexyZY2xfnaeOatX9cwXpg/bisM44VRnYaE45YiLkw6pFIMtxKVi4eGogo7nfgSMztFFP+6cAAAAAAAAAAAAAAAApxnF3zCNu4wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACcX/8JAAD//7a0vsc=")
syz_mount_image$exfat(0x0, &(0x7f0000000200)='./bus\x00', 0xe1c00, 0x0, 0x0, 0x0, &(0x7f0000000000))

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=1m6.427122906s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000001c0)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x8413, &(0x7f0000000100)={[{@delalloc}, {}, {@nodioread_nolock}, {@acl}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1}}, {@noblock_validity}, {@usrjquota}, {@jqfmt_vfsv0}, {@inode_readahead_blks={'inode_readahead_blks', 0x3d, 0x1000}}, {@inlinecrypt}, {@sysvgroups}]}, 0x18, 0x569, &(0x7f0000000780)="$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")
syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000180)='./file0\x00', 0x2008002, &(0x7f00000000c0)={[{@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1000}}, {@nobh}, {@quota}]}, 0x1, 0x560, &(0x7f0000000440)="$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")

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing program (duration=1m6.427122906s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f00000001c0)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x8413, &(0x7f0000000100)={[{@delalloc}, {}, {@nodioread_nolock}, {@acl}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1}}, {@noblock_validity}, {@usrjquota}, {@jqfmt_vfsv0}, {@inode_readahead_blks={'inode_readahead_blks', 0x3d, 0x1000}}, {@inlinecrypt}, {@sysvgroups}]}, 0x18, 0x569, &(0x7f0000000780)="$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")

program did not crash
testing program (duration=1m6.427122906s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000180)='./file0\x00', 0x2008002, &(0x7f00000000c0)={[{@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1000}}, {@nobh}, {@quota}]}, 0x1, 0x560, &(0x7f0000000440)="$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")

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
extracting C reproducer
testing compiled C program (duration=1m6.427122906s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
simplifying C reproducer
testing compiled C program (duration=1m6.427122906s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program did not crash
testing compiled C program (duration=1m6.427122906s, {Threaded:true 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program did not crash
testing compiled C program (duration=1m6.427122906s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing compiled C program (duration=1m6.427122906s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): syz_mount_image$ext4
program did not crash
testing compiled C program (duration=1m6.427122906s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing compiled C program (duration=1m6.427122906s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
testing program (duration=1m6.427122906s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000180)='./file0\x00', 0x2008002, &(0x7f00000000c0)={[{@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1000}}, {@nobh}, {@quota}]}, 0x1, 0x560, &(0x7f0000000440)="$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")

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
validation run: crashed=true
testing program (duration=1m6.427122906s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000180)='./file0\x00', 0x2008002, &(0x7f00000000c0)={[{@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1000}}, {@nobh}, {@quota}]}, 0x1, 0x560, &(0x7f0000000440)="$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")

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
validation run: crashed=true
testing program (duration=1m6.427122906s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000180)='./file0\x00', 0x2008002, &(0x7f00000000c0)={[{@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x1000}}, {@nobh}, {@quota}]}, 0x1, 0x560, &(0x7f0000000440)="$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")

program crashed: KASAN: null-ptr-deref Write in do_page_cache_ra
validation run: crashed=true
reproducing took 16m15.663226422s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_write include/linux/instrumented.h:87 [inline]
BUG: KASAN: null-ptr-deref in set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
BUG: KASAN: null-ptr-deref in do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Write of size 8 at addr 0000000000000000 by task udevd/444

CPU: 0 PID: 444 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_report+0x3d/0x60 mm/kasan/report.c:423
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_write include/linux/instrumented.h:87 [inline]
 set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
 do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
 force_page_cache_ra mm/readahead.c:360 [inline]
 page_cache_sync_ra+0x32b/0x3d0 mm/readahead.c:751
 page_cache_sync_readahead include/linux/pagemap.h:1259 [inline]
 filemap_get_pages mm/filemap.c:2706 [inline]
 filemap_read+0x6b6/0x23c0 mm/filemap.c:2801
 blkdev_read_iter+0x439/0x580 block/fops.c:668
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x46e/0x930 fs/read_write.c:470
 ksys_read+0x14a/0x260 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7c058a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc4aa6f820 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f7c05f8b880 RCX: 00007f7c058a7407
RDX: 0000000000000200 RSI: 00007f7c05f83000 RDI: 0000000000000009
RBP: 0000562cc6f28790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000020000 R14: 0000562cc6f29b48 R15: 00007f7c0605039c
 </TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000003
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 444 Comm: udevd Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:arch_set_bit include/linux/instrumented.h:87 [inline]
RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
RIP: 0010:do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Code: fd ff 48 3d 01 f0 ff ff 72 10 e8 7c 1e d2 ff 49 83 ee 01 73 78 e9 87 00 00 00 49 89 c4 48 89 c7 be 08 00 00 00 e8 d1 ba 17 00 <f0> 41 80 4c 24 03 10 4c 89 e7 48 83 c7 34 be 04 00 00 00 e8 b9 ba
RSP: 0018:ffffc90000b27878 EFLAGS: 00010246
RAX: ffff888119a5bc00 RBX: 0000000000000020 RCX: ffff888119a5bcc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000b278c8 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc
R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: 0000000000000000
R13: 000000000000001f R14: 0000000000000000 R15: ffff88810b70d850
FS:  00007f7c05f8b880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 000000012c4f9000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 force_page_cache_ra mm/readahead.c:360 [inline]
 page_cache_sync_ra+0x32b/0x3d0 mm/readahead.c:751
 page_cache_sync_readahead include/linux/pagemap.h:1259 [inline]
 filemap_get_pages mm/filemap.c:2706 [inline]
 filemap_read+0x6b6/0x23c0 mm/filemap.c:2801
 blkdev_read_iter+0x439/0x580 block/fops.c:668
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x46e/0x930 fs/read_write.c:470
 ksys_read+0x14a/0x260 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7c058a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc4aa6f820 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f7c05f8b880 RCX: 00007f7c058a7407
RDX: 0000000000000200 RSI: 00007f7c05f83000 RDI: 0000000000000009
RBP: 0000562cc6f28790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000020000 R14: 0000562cc6f29b48 R15: 00007f7c0605039c
 </TASK>
Modules linked in:
CR2: 0000000000000003
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_set_bit include/linux/instrumented.h:87 [inline]
RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
RIP: 0010:do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Code: fd ff 48 3d 01 f0 ff ff 72 10 e8 7c 1e d2 ff 49 83 ee 01 73 78 e9 87 00 00 00 49 89 c4 48 89 c7 be 08 00 00 00 e8 d1 ba 17 00 <f0> 41 80 4c 24 03 10 4c 89 e7 48 83 c7 34 be 04 00 00 00 e8 b9 ba
RSP: 0018:ffffc90000b27878 EFLAGS: 00010246
RAX: ffff888119a5bc00 RBX: 0000000000000020 RCX: ffff888119a5bcc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000b278c8 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc
R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: 0000000000000000
R13: 000000000000001f R14: 0000000000000000 R15: ffff88810b70d850
FS:  00007f7c05f8b880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 000000012c4f9000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	72 10                	jb     0x18
   8:	e8 7c 1e d2 ff       	call   0xffd21e89
   d:	49 83 ee 01          	sub    $0x1,%r14
  11:	73 78                	jae    0x8b
  13:	e9 87 00 00 00       	jmp    0x9f
  18:	49 89 c4             	mov    %rax,%r12
  1b:	48 89 c7             	mov    %rax,%rdi
  1e:	be 08 00 00 00       	mov    $0x8,%esi
  23:	e8 d1 ba 17 00       	call   0x17baf9
* 28:	f0 41 80 4c 24 03 10 	lock orb $0x10,0x3(%r12) <-- trapping instruction
  2f:	4c 89 e7             	mov    %r12,%rdi
  32:	48 83 c7 34          	add    $0x34,%rdi
  36:	be 04 00 00 00       	mov    $0x4,%esi
  3b:	e8                   	.byte 0xe8
  3c:	b9                   	.byte 0xb9
  3d:	ba                   	.byte 0xba

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_write include/linux/instrumented.h:87 [inline]
BUG: KASAN: null-ptr-deref in set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
BUG: KASAN: null-ptr-deref in do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Write of size 8 at addr 0000000000000000 by task udevd/444

CPU: 0 PID: 444 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_report+0x3d/0x60 mm/kasan/report.c:423
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_write include/linux/instrumented.h:87 [inline]
 set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
 do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
 force_page_cache_ra mm/readahead.c:360 [inline]
 page_cache_sync_ra+0x32b/0x3d0 mm/readahead.c:751
 page_cache_sync_readahead include/linux/pagemap.h:1259 [inline]
 filemap_get_pages mm/filemap.c:2706 [inline]
 filemap_read+0x6b6/0x23c0 mm/filemap.c:2801
 blkdev_read_iter+0x439/0x580 block/fops.c:668
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x46e/0x930 fs/read_write.c:470
 ksys_read+0x14a/0x260 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7c058a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc4aa6f820 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f7c05f8b880 RCX: 00007f7c058a7407
RDX: 0000000000000200 RSI: 00007f7c05f83000 RDI: 0000000000000009
RBP: 0000562cc6f28790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000020000 R14: 0000562cc6f29b48 R15: 00007f7c0605039c
 </TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000003
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 444 Comm: udevd Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:arch_set_bit include/linux/instrumented.h:87 [inline]
RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
RIP: 0010:do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Code: fd ff 48 3d 01 f0 ff ff 72 10 e8 7c 1e d2 ff 49 83 ee 01 73 78 e9 87 00 00 00 49 89 c4 48 89 c7 be 08 00 00 00 e8 d1 ba 17 00 <f0> 41 80 4c 24 03 10 4c 89 e7 48 83 c7 34 be 04 00 00 00 e8 b9 ba
RSP: 0018:ffffc90000b27878 EFLAGS: 00010246
RAX: ffff888119a5bc00 RBX: 0000000000000020 RCX: ffff888119a5bcc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000b278c8 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc
R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: 0000000000000000
R13: 000000000000001f R14: 0000000000000000 R15: ffff88810b70d850
FS:  00007f7c05f8b880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 000000012c4f9000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 force_page_cache_ra mm/readahead.c:360 [inline]
 page_cache_sync_ra+0x32b/0x3d0 mm/readahead.c:751
 page_cache_sync_readahead include/linux/pagemap.h:1259 [inline]
 filemap_get_pages mm/filemap.c:2706 [inline]
 filemap_read+0x6b6/0x23c0 mm/filemap.c:2801
 blkdev_read_iter+0x439/0x580 block/fops.c:668
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x46e/0x930 fs/read_write.c:470
 ksys_read+0x14a/0x260 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7c058a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc4aa6f820 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f7c05f8b880 RCX: 00007f7c058a7407
RDX: 0000000000000200 RSI: 00007f7c05f83000 RDI: 0000000000000009
RBP: 0000562cc6f28790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000020000 R14: 0000562cc6f29b48 R15: 00007f7c0605039c
 </TASK>
Modules linked in:
CR2: 0000000000000003
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_set_bit include/linux/instrumented.h:87 [inline]
RIP: 0010:set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
RIP: 0010:do_page_cache_ra+0x18f/0x230 mm/readahead.c:324
Code: fd ff 48 3d 01 f0 ff ff 72 10 e8 7c 1e d2 ff 49 83 ee 01 73 78 e9 87 00 00 00 49 89 c4 48 89 c7 be 08 00 00 00 e8 d1 ba 17 00 <f0> 41 80 4c 24 03 10 4c 89 e7 48 83 c7 34 be 04 00 00 00 e8 b9 ba
RSP: 0018:ffffc90000b27878 EFLAGS: 00010246
RAX: ffff888119a5bc00 RBX: 0000000000000020 RCX: ffff888119a5bcc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000b278c8 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc
R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: 0000000000000000
R13: 000000000000001f R14: 0000000000000000 R15: ffff88810b70d850
FS:  00007f7c05f8b880(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 000000012c4f9000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	72 10                	jb     0x18
   8:	e8 7c 1e d2 ff       	call   0xffd21e89
   d:	49 83 ee 01          	sub    $0x1,%r14
  11:	73 78                	jae    0x8b
  13:	e9 87 00 00 00       	jmp    0x9f
  18:	49 89 c4             	mov    %rax,%r12
  1b:	48 89 c7             	mov    %rax,%rdi
  1e:	be 08 00 00 00       	mov    $0x8,%esi
  23:	e8 d1 ba 17 00       	call   0x17baf9
* 28:	f0 41 80 4c 24 03 10 	lock orb $0x10,0x3(%r12) <-- trapping instruction
  2f:	4c 89 e7             	mov    %r12,%rdi
  32:	48 83 c7 34          	add    $0x34,%rdi
  36:	be 04 00 00 00       	mov    $0x4,%esi
  3b:	e8                   	.byte 0xe8
  3c:	b9                   	.byte 0xb9
  3d:	ba                   	.byte 0xba