Extracting prog: 2m32.181096642s
Minimizing prog: 10m46.086784534s
Simplifying prog options: 0s
Extracting C: 38.271763605s
Simplifying C: 10m54.279383078s


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$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program crashed: general protection fault in h5_recv
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=46.028743995s, {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$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)

program did not crash
testing program (duration=46.028743995s, {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$ptmx-ioctl$TIOCSETD-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program did not crash
testing program (duration=46.028743995s, {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$ptmx-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program did not crash
testing program (duration=46.028743995s, {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}}): ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
ioctl$TIOCSETD(0xffffffffffffffff, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(0xffffffffffffffff, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(0xffffffffffffffff, 0x5412, &(0x7f0000000040)=0x33)

program did not crash
testing program (duration=46.028743995s, {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$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x2)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program did not crash
testing program (duration=46.028743995s, {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$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, 0x0, 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program did not crash
testing program (duration=46.028743995s, {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$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program did not crash
testing program (duration=46.028743995s, {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$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(r0, 0x5412, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=46.028743995s, {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$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program crashed: general protection fault in h5_recv
simplifying C reproducer
testing compiled C program (duration=46.028743995s, {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$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program did not crash
testing compiled C program (duration=46.028743995s, {Threaded:true 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}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program did not crash
testing compiled C program (duration=46.028743995s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program crashed: general protection fault in h5_recv
testing compiled C program (duration=46.028743995s, {Threaded:true 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}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program crashed: general protection fault in h5_recv
testing compiled C program (duration=46.028743995s, {Threaded:true 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:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program crashed: general protection fault in h5_recv
testing compiled C program (duration=46.028743995s, {Threaded:true 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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program crashed: general protection fault in h5_recv
testing compiled C program (duration=46.028743995s, {Threaded:true 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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program crashed: general protection fault in h5_recv
testing compiled C program (duration=46.028743995s, {Threaded:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
program crashed: general protection fault in h5_recv
testing program (duration=46.028743995s, {Threaded:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program crashed: general protection fault in h5_recv
validation run: crashed=true
testing program (duration=46.028743995s, {Threaded:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program crashed: general protection fault in h5_recv
validation run: crashed=true
testing program (duration=46.028743995s, {Threaded:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-ioctl$TIOCSTI
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000001c0), 0x240, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x2) (async)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000040)=0x33)

program crashed: general protection fault in h5_recv
validation run: crashed=true
reproducing took 30m26.101566977s
repro crashed as (corrupted=false):
general protection fault, probably for non-canonical address 0xdffffc000000005f: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000002f8-0x00000000000002ff]
CPU: 0 PID: 5964 Comm: syz.0.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:h5_recv+0x147/0x8c0 drivers/bluetooth/hci_h5.c:572
Code: 18 48 c1 ea 03 48 89 54 24 28 48 89 d8 48 c1 e8 03 48 89 44 24 50 44 89 64 24 14 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 30 <80> 3c 01 00 74 08 4c 89 ef e8 7b d7 57 fa 4d 8b 65 00 31 ff 4c 89
RSP: 0018:ffffc90003207c60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000002e8 RCX: 000000000000005f
RDX: 000000000000005e RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003207d80 R08: ffff888060213c1f R09: 1ffff1100c042783
R10: dffffc0000000000 R11: ffffed100c042784 R12: 0000000000000001
R13: 00000000000002f8 R14: ffff888060213c10 R15: ffffc90003207e20
FS:  00007f9a8ea076c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9a8ea06f98 CR3: 00000000761d0000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 hci_uart_tty_receive+0x188/0x210 drivers/bluetooth/hci_ldisc.c:624
 tiocsti+0x23e/0x2c0 drivers/tty/tty_io.c:2291
 tty_ioctl+0x62e/0xdd0 drivers/tty/tty_io.c:2693
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9a8db8f749
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:00007f9a8ea07038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9a8dde6090 RCX: 00007f9a8db8f749
RDX: 0000200000000040 RSI: 0000000000005412 RDI: 0000000000000003
RBP: 00007f9a8dc13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9a8dde6128 R14: 00007f9a8dde6090 R15: 00007ffccba69c08
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:h5_recv+0x147/0x8c0 drivers/bluetooth/hci_h5.c:572
Code: 18 48 c1 ea 03 48 89 54 24 28 48 89 d8 48 c1 e8 03 48 89 44 24 50 44 89 64 24 14 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 30 <80> 3c 01 00 74 08 4c 89 ef e8 7b d7 57 fa 4d 8b 65 00 31 ff 4c 89
RSP: 0018:ffffc90003207c60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000002e8 RCX: 000000000000005f
RDX: 000000000000005e RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003207d80 R08: ffff888060213c1f R09: 1ffff1100c042783
R10: dffffc0000000000 R11: ffffed100c042784 R12: 0000000000000001
R13: 00000000000002f8 R14: ffff888060213c10 R15: ffffc90003207e20
FS:  00007f9a8ea076c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008405000 CR3: 00000000761d0000 CR4: 00000000003506f0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	48 89 54 24 28       	mov    %rdx,0x28(%rsp)
   9:	48 89 d8             	mov    %rbx,%rax
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	48 89 44 24 50       	mov    %rax,0x50(%rsp)
  15:	44 89 64 24 14       	mov    %r12d,0x14(%rsp)
  1a:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  21:	fc ff df
  24:	48 8b 4c 24 30       	mov    0x30(%rsp),%rcx
* 29:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1) <-- trapping instruction
  2d:	74 08                	je     0x37
  2f:	4c 89 ef             	mov    %r13,%rdi
  32:	e8 7b d7 57 fa       	call   0xfa57d7b2
  37:	4d 8b 65 00          	mov    0x0(%r13),%r12
  3b:	31 ff                	xor    %edi,%edi
  3d:	4c                   	rex.WR
  3e:	89                   	.byte 0x89

final repro crashed as (corrupted=false):
general protection fault, probably for non-canonical address 0xdffffc000000005f: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000002f8-0x00000000000002ff]
CPU: 0 PID: 5964 Comm: syz.0.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:h5_recv+0x147/0x8c0 drivers/bluetooth/hci_h5.c:572
Code: 18 48 c1 ea 03 48 89 54 24 28 48 89 d8 48 c1 e8 03 48 89 44 24 50 44 89 64 24 14 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 30 <80> 3c 01 00 74 08 4c 89 ef e8 7b d7 57 fa 4d 8b 65 00 31 ff 4c 89
RSP: 0018:ffffc90003207c60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000002e8 RCX: 000000000000005f
RDX: 000000000000005e RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003207d80 R08: ffff888060213c1f R09: 1ffff1100c042783
R10: dffffc0000000000 R11: ffffed100c042784 R12: 0000000000000001
R13: 00000000000002f8 R14: ffff888060213c10 R15: ffffc90003207e20
FS:  00007f9a8ea076c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9a8ea06f98 CR3: 00000000761d0000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 hci_uart_tty_receive+0x188/0x210 drivers/bluetooth/hci_ldisc.c:624
 tiocsti+0x23e/0x2c0 drivers/tty/tty_io.c:2291
 tty_ioctl+0x62e/0xdd0 drivers/tty/tty_io.c:2693
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9a8db8f749
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:00007f9a8ea07038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9a8dde6090 RCX: 00007f9a8db8f749
RDX: 0000200000000040 RSI: 0000000000005412 RDI: 0000000000000003
RBP: 00007f9a8dc13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9a8dde6128 R14: 00007f9a8dde6090 R15: 00007ffccba69c08
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:h5_recv+0x147/0x8c0 drivers/bluetooth/hci_h5.c:572
Code: 18 48 c1 ea 03 48 89 54 24 28 48 89 d8 48 c1 e8 03 48 89 44 24 50 44 89 64 24 14 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 30 <80> 3c 01 00 74 08 4c 89 ef e8 7b d7 57 fa 4d 8b 65 00 31 ff 4c 89
RSP: 0018:ffffc90003207c60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000002e8 RCX: 000000000000005f
RDX: 000000000000005e RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003207d80 R08: ffff888060213c1f R09: 1ffff1100c042783
R10: dffffc0000000000 R11: ffffed100c042784 R12: 0000000000000001
R13: 00000000000002f8 R14: ffff888060213c10 R15: ffffc90003207e20
FS:  00007f9a8ea076c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008405000 CR3: 00000000761d0000 CR4: 00000000003506f0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	48 89 54 24 28       	mov    %rdx,0x28(%rsp)
   9:	48 89 d8             	mov    %rbx,%rax
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	48 89 44 24 50       	mov    %rax,0x50(%rsp)
  15:	44 89 64 24 14       	mov    %r12d,0x14(%rsp)
  1a:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  21:	fc ff df
  24:	48 8b 4c 24 30       	mov    0x30(%rsp),%rcx
* 29:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1) <-- trapping instruction
  2d:	74 08                	je     0x37
  2f:	4c 89 ef             	mov    %r13,%rdi
  32:	e8 7b d7 57 fa       	call   0xfa57d7b2
  37:	4d 8b 65 00          	mov    0x0(%r13),%r12
  3b:	31 ff                	xor    %edi,%edi
  3d:	4c                   	rex.WR
  3e:	89                   	.byte 0x89