Extracting prog: 28.488269483s
Minimizing prog: 3m42.551912852s
Simplifying prog options: 0s
Extracting C: 22.775163844s
Simplifying C: 9m51.467418383s


extracting reproducer from 24 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs: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}}): unshare-mmap-bpf$PROG_LOAD-syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
unshare(0x62040200)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0)
bpf$PROG_LOAD(0x5, 0x0, 0x0)
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0) (fail_nth: 24)

program crashed: kernel BUG in __sock_release
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=33.076641058s, {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}}): unshare-mmap-bpf$PROG_LOAD
detailed listing:
executing program 0:
unshare(0x62040200)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0)
bpf$PROG_LOAD(0x5, 0x0, 0x0)

program did not crash
testing program (duration=33.076641058s, {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}}): unshare-mmap-syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
unshare(0x62040200)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x3, 0x8031, 0xffffffffffffffff, 0x0)
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0) (fail_nth: 24)

program crashed: kernel BUG in __sock_release
testing program (duration=33.076641058s, {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}}): unshare-syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
unshare(0x62040200)
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0) (fail_nth: 24)

program crashed: kernel BUG in __sock_release
testing program (duration=33.076641058s, {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}}): syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0) (fail_nth: 24)

program crashed: kernel BUG in __sock_release
testing program (duration=33.076641058s, {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}}): syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=33.076641058s, {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}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
simplifying C reproducer
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program did not crash
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program did not crash
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing compiled C program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap
program crashed: kernel BUG in __sock_release
testing program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true 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}}): syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0) (fail_nth: 24)

program crashed: kernel BUG in __sock_release
validation run: crashed=true
testing program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true 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}}): syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0) (fail_nth: 24)

program crashed: kernel BUG in __sock_release
validation run: crashed=true
testing program (duration=33.076641058s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true 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}}): syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0) (fail_nth: 24)

program crashed: kernel BUG in __sock_release
validation run: crashed=true
reproducing took 16m52.889721206s
repro crashed as (corrupted=false):
VFS_BUG_ON_INODE(inode_state_read_once(inode) & I_CLEAR) encountered for inode ffff888043dc6840
fs sockfs mode 140777 opflags 0x8 flags 0x0 state 0x300 count 0
------------[ cut here ]------------
kernel BUG at fs/inode.c:1971!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 6094 Comm: syz.0.20 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:iput.part.0+0xb3b/0x1190 fs/inode.c:1971
Code: 4b 68 ff ff 90 0f 0b e8 03 57 7c ff 90 0f 0b 90 e9 d3 f8 ff ff e8 f5 56 7c ff 48 c7 c6 20 62 a0 8b 48 89 df e8 26 68 ff ff 90 <0f> 0b e8 de 56 7c ff 48 c7 c6 80 62 a0 8b 48 89 df e8 0f 68 ff ff
RSP: 0018:ffffc90003fffdc8 EFLAGS: 00010296
RAX: 000000000000009f RBX: ffff888043dc6840 RCX: ffffffff819bac59
RDX: 0000000000000000 RSI: ffffffff819c2756 RDI: 0000000000000005
RBP: 0000000000000200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 00000000ffffffff R12: 0000000000000000
R13: ffffffff9085ca54 R14: ffff888043dc6910 R15: dffffc0000000000
FS:  000055556fe06500(0000) GS:ffff8880d6aa3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003f26000 CR3: 000000004d4bc000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 iput+0x35/0x40 fs/inode.c:1966
 __sock_release+0x20b/0x270 net/socket.c:665
 sock_release net/socket.c:681 [inline]
 sock_map_fd net/socket.c:510 [inline]
 __sys_socket+0x23a/0x2d0 net/socket.c:1747
 __do_sys_socket net/socket.c:1752 [inline]
 __se_sys_socket net/socket.c:1750 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1750
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe74538f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffcaacc798 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fe74538f7c9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000001f
RBP: 00007fffcaacc850 R08: 0000000000000000 R09: 00007fffcaacca00
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fe7455e5fa0 R14: 00007fe7455e5fa0 R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:iput.part.0+0xb3b/0x1190 fs/inode.c:1971
Code: 4b 68 ff ff 90 0f 0b e8 03 57 7c ff 90 0f 0b 90 e9 d3 f8 ff ff e8 f5 56 7c ff 48 c7 c6 20 62 a0 8b 48 89 df e8 26 68 ff ff 90 <0f> 0b e8 de 56 7c ff 48 c7 c6 80 62 a0 8b 48 89 df e8 0f 68 ff ff
RSP: 0018:ffffc90003fffdc8 EFLAGS: 00010296
RAX: 000000000000009f RBX: ffff888043dc6840 RCX: ffffffff819bac59
RDX: 0000000000000000 RSI: ffffffff819c2756 RDI: 0000000000000005
RBP: 0000000000000200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 00000000ffffffff R12: 0000000000000000
R13: ffffffff9085ca54 R14: ffff888043dc6910 R15: dffffc0000000000
FS:  000055556fe06500(0000) GS:ffff8880d6aa3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003f26000 CR3: 000000004d4bc000 CR4: 0000000000352ef0

final repro crashed as (corrupted=false):
VFS_BUG_ON_INODE(inode_state_read_once(inode) & I_CLEAR) encountered for inode ffff888043dc6840
fs sockfs mode 140777 opflags 0x8 flags 0x0 state 0x300 count 0
------------[ cut here ]------------
kernel BUG at fs/inode.c:1971!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 6094 Comm: syz.0.20 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:iput.part.0+0xb3b/0x1190 fs/inode.c:1971
Code: 4b 68 ff ff 90 0f 0b e8 03 57 7c ff 90 0f 0b 90 e9 d3 f8 ff ff e8 f5 56 7c ff 48 c7 c6 20 62 a0 8b 48 89 df e8 26 68 ff ff 90 <0f> 0b e8 de 56 7c ff 48 c7 c6 80 62 a0 8b 48 89 df e8 0f 68 ff ff
RSP: 0018:ffffc90003fffdc8 EFLAGS: 00010296
RAX: 000000000000009f RBX: ffff888043dc6840 RCX: ffffffff819bac59
RDX: 0000000000000000 RSI: ffffffff819c2756 RDI: 0000000000000005
RBP: 0000000000000200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 00000000ffffffff R12: 0000000000000000
R13: ffffffff9085ca54 R14: ffff888043dc6910 R15: dffffc0000000000
FS:  000055556fe06500(0000) GS:ffff8880d6aa3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003f26000 CR3: 000000004d4bc000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 iput+0x35/0x40 fs/inode.c:1966
 __sock_release+0x20b/0x270 net/socket.c:665
 sock_release net/socket.c:681 [inline]
 sock_map_fd net/socket.c:510 [inline]
 __sys_socket+0x23a/0x2d0 net/socket.c:1747
 __do_sys_socket net/socket.c:1752 [inline]
 __se_sys_socket net/socket.c:1750 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1750
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe74538f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffcaacc798 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fe74538f7c9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000001f
RBP: 00007fffcaacc850 R08: 0000000000000000 R09: 00007fffcaacca00
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fe7455e5fa0 R14: 00007fe7455e5fa0 R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:iput.part.0+0xb3b/0x1190 fs/inode.c:1971
Code: 4b 68 ff ff 90 0f 0b e8 03 57 7c ff 90 0f 0b 90 e9 d3 f8 ff ff e8 f5 56 7c ff 48 c7 c6 20 62 a0 8b 48 89 df e8 26 68 ff ff 90 <0f> 0b e8 de 56 7c ff 48 c7 c6 80 62 a0 8b 48 89 df e8 0f 68 ff ff
RSP: 0018:ffffc90003fffdc8 EFLAGS: 00010296
RAX: 000000000000009f RBX: ffff888043dc6840 RCX: ffffffff819bac59
RDX: 0000000000000000 RSI: ffffffff819c2756 RDI: 0000000000000005
RBP: 0000000000000200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 00000000ffffffff R12: 0000000000000000
R13: ffffffff9085ca54 R14: ffff888043dc6910 R15: dffffc0000000000
FS:  000055556fe06500(0000) GS:ffff8880d6aa3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003f26000 CR3: 000000004d4bc000 CR4: 0000000000352ef0