Extracting prog: 4m14.350897065s
Minimizing prog: 35m38.751425759s
Simplifying prog options: 18m59.093764646s
Extracting C: 5m10.550808584s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-inotify_init1-fcntl$setown-fcntl$getownex-syz_open_procfs-pwritev2
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f0000000000)='proc\x00', 0x0, 0x0)
r1 = inotify_init1(0x0)
fcntl$setown(r1, 0x8, 0xffffffffffffffff)
fcntl$getownex(r1, 0x10, &(0x7f0000000140)={0x0, <r2=>0x0})
r3 = syz_open_procfs(r2, &(0x7f0000000600)='fd/4\x00')
pwritev2(r3, &(0x7f0000000040)=[{&(0x7f0000000180)="ce1fd88ec91f", 0x6}], 0x1, 0x4, 0x1, 0x4)

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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-inotify_init1-fcntl$setown-fcntl$getownex-syz_open_procfs-pwritev2
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f0000000000)='proc\x00', 0x0, 0x0)
r1 = inotify_init1(0x0)
fcntl$setown(r1, 0x8, 0xffffffffffffffff)
fcntl$getownex(r1, 0x10, &(0x7f0000000140)={0x0, <r2=>0x0})
r3 = syz_open_procfs(r2, &(0x7f0000000600)='fd/4\x00')
pwritev2(r3, &(0x7f0000000040)=[{&(0x7f0000000180)="ce1fd88ec91f", 0x6}], 0x1, 0x4, 0x1, 0x4)

program crashed: kernel BUG in may_open
single: successfully extracted reproducer
found reproducer with 8 syscalls
minimizing guilty program
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-inotify_init1-fcntl$setown-fcntl$getownex-syz_open_procfs
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f0000000000)='proc\x00', 0x0, 0x0)
r1 = inotify_init1(0x0)
fcntl$setown(r1, 0x8, 0xffffffffffffffff)
fcntl$getownex(r1, 0x10, &(0x7f0000000140)={0x0, <r2=>0x0})
syz_open_procfs(r2, &(0x7f0000000600)='fd/4\x00')

program crashed: kernel BUG in may_open
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-inotify_init1-fcntl$setown-fcntl$getownex
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f0000000000)='proc\x00', 0x0, 0x0)
r1 = inotify_init1(0x0)
fcntl$setown(r1, 0x8, 0xffffffffffffffff)
fcntl$getownex(r1, 0x10, &(0x7f0000000140))

program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-inotify_init1-fcntl$setown-syz_open_procfs
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f0000000000)='proc\x00', 0x0, 0x0)
r1 = inotify_init1(0x0)
fcntl$setown(r1, 0x8, 0xffffffffffffffff)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program crashed: kernel BUG in may_open
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-inotify_init1-syz_open_procfs
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f0000000000)='proc\x00', 0x0, 0x0)
inotify_init1(0x0)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program crashed: kernel BUG in may_open
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-mount-syz_open_procfs
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
mount(0x0, &(0x7f0000000080)='.\x00', &(0x7f0000000000)='proc\x00', 0x0, 0x0)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-fchdir-inotify_init1-syz_open_procfs
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
fchdir(r0)
inotify_init1(0x0)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program crashed: kernel BUG in may_open
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-inotify_init1-syz_open_procfs
detailed listing:
executing program 0:
syz_open_procfs(0x0, &(0x7f00000000c0)='task\x00')
inotify_init1(0x0)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program crashed: kernel BUG in may_open
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): inotify_init1-syz_open_procfs
detailed listing:
executing program 0:
inotify_init1(0x0)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program did not crash
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-inotify_init1-syz_open_procfs
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
inotify_init1(0x0)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program crashed: kernel BUG in may_open
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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-inotify_init1-syz_open_procfs
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
inotify_init1(0x0)
syz_open_procfs(0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C 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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-inotify_init1-syz_open_procfs
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-inotify_init1-syz_open_procfs
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
inotify_init1(0x0)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program did not crash
testing program (duration=6m0s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-inotify_init1-syz_open_procfs
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
inotify_init1(0x0)
syz_open_procfs(0x0, &(0x7f0000000600)='fd/4\x00')

program did not crash
program did not crash
reproducing took 1h4m2.74690811s
repro crashed as (corrupted=false):
VFS_BUG_ON_INODE(1) encountered for inode ffff0000c1468000
------------[ cut here ]------------
kernel BUG at fs/namei.c:3467!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 6752 Comm: syz.2.15911 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : may_open+0x3c0/0x3c4 fs/namei.c:3467
lr : may_open+0x3c0/0x3c4 fs/namei.c:3467
sp : ffff80009edc77b0
x29: ffff80009edc77b0 x28: 1fffe0001bca0a00 x27: ffff80008f6578e0
x26: 0000000000280000 x25: dfff800000000000 x24: 00000000000fffff
x23: ffff80009edc7aa0 x22: 0000000000000006 x21: ffff0000c1468000
x20: 0000000000020002 x19: ffff80008f6578e0 x18: 0000000000000000
x17: ffff0001fea8b870 x16: ffff80008adbe9e4 x15: 0000000000000001
x14: 1ffff00013db8e5c x13: 0000000000000000 x12: 0000000000000000
x11: ffff700013db8e5d x10: 0000000000ff0100 x9 : b6d2becbabefd600
x8 : b6d2becbabefd600 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009edc7118 x4 : ffff80008f415ba0 x3 : ffff800082fbf044
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000003a
Call trace:
 may_open+0x3c0/0x3c4 fs/namei.c:3467 (P)
 do_open fs/namei.c:3878 [inline]
 path_openat+0x22f4/0x2c40 fs/namei.c:4039
 do_filp_open+0x18c/0x36c fs/namei.c:4066
 do_sys_openat2+0x11c/0x1b4 fs/open.c:1429
 do_sys_open fs/open.c:1444 [inline]
 __do_sys_openat fs/open.c:1460 [inline]
 __se_sys_openat fs/open.c:1455 [inline]
 __arm64_sys_openat+0x120/0x158 fs/open.c:1455
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: f0051061 91100021 aa1503e0 97cf135e (d4210000) 
---[ end trace 0000000000000000 ]---

final repro crashed as (corrupted=false):
VFS_BUG_ON_INODE(1) encountered for inode ffff0000c1468000
------------[ cut here ]------------
kernel BUG at fs/namei.c:3467!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 6752 Comm: syz.2.15911 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : may_open+0x3c0/0x3c4 fs/namei.c:3467
lr : may_open+0x3c0/0x3c4 fs/namei.c:3467
sp : ffff80009edc77b0
x29: ffff80009edc77b0 x28: 1fffe0001bca0a00 x27: ffff80008f6578e0
x26: 0000000000280000 x25: dfff800000000000 x24: 00000000000fffff
x23: ffff80009edc7aa0 x22: 0000000000000006 x21: ffff0000c1468000
x20: 0000000000020002 x19: ffff80008f6578e0 x18: 0000000000000000
x17: ffff0001fea8b870 x16: ffff80008adbe9e4 x15: 0000000000000001
x14: 1ffff00013db8e5c x13: 0000000000000000 x12: 0000000000000000
x11: ffff700013db8e5d x10: 0000000000ff0100 x9 : b6d2becbabefd600
x8 : b6d2becbabefd600 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009edc7118 x4 : ffff80008f415ba0 x3 : ffff800082fbf044
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000003a
Call trace:
 may_open+0x3c0/0x3c4 fs/namei.c:3467 (P)
 do_open fs/namei.c:3878 [inline]
 path_openat+0x22f4/0x2c40 fs/namei.c:4039
 do_filp_open+0x18c/0x36c fs/namei.c:4066
 do_sys_openat2+0x11c/0x1b4 fs/open.c:1429
 do_sys_open fs/open.c:1444 [inline]
 __do_sys_openat fs/open.c:1460 [inline]
 __se_sys_openat fs/open.c:1455 [inline]
 __arm64_sys_openat+0x120/0x158 fs/open.c:1455
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: f0051061 91100021 aa1503e0 97cf135e (d4210000) 
---[ end trace 0000000000000000 ]---