Extracting prog: 3m57.852124321s
Minimizing prog: 9m18.4056758s
Simplifying prog options: 0s
Extracting C: 30.158167646s
Simplifying C: 8m28.481663553s


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}}): mknodat$null-mount
detailed listing:
executing program 0:
mknodat$null(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0, 0x103)
mount(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000002140)='efivarfs\x00', 0xb00, 0x0)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs: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}}): mknodat$null-mount
detailed listing:
executing program 0:
mknodat$null(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0, 0x103)
mount(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000002140)='efivarfs\x00', 0xb00, 0x0)

program crashed: BUG: corrupted list in efivar_entry_remove
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=1m40s, {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}}): mknodat$null
detailed listing:
executing program 0:
mknodat$null(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0, 0x103)

program did not crash
testing program (duration=1m40s, {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}}): mount
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000002140)='efivarfs\x00', 0xb00, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): mknodat$null-mount
detailed listing:
executing program 0:
mknodat$null(0xffffffffffffff9c, 0x0, 0x0, 0x103)
mount(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000002140)='efivarfs\x00', 0xb00, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): mknodat$null-mount
detailed listing:
executing program 0:
mknodat$null(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0, 0x103)
mount(0x0, 0x0, &(0x7f0000002140)='efivarfs\x00', 0xb00, 0x0)

program did not crash
testing program (duration=1m40s, {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}}): mknodat$null-mount
detailed listing:
executing program 0:
mknodat$null(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0, 0x103)
mount(0x0, &(0x7f0000000040)='./file0\x00', 0x0, 0xb00, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {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}}): mknodat$null-mount
program crashed: BUG: corrupted list in efivar_entry_remove
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknodat$null-mount
program crashed: BUG: corrupted list in efivar_entry_remove
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknodat$null-mount
program did not crash
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknodat$null-mount
program crashed: BUG: corrupted list in efivar_entry_remove
testing compiled C program (duration=1m40s, {Threaded:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknodat$null-mount
program crashed: BUG: corrupted list in efivar_entry_remove
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknodat$null-mount
program crashed: BUG: corrupted list in efivar_entry_remove
testing compiled C program (duration=1m40s, {Threaded:false 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:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknodat$null-mount
program crashed: BUG: corrupted list in efivar_entry_remove
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknodat$null-mount
program crashed: BUG: corrupted list in efivar_entry_remove
reproducing took 22m14.89764518s
repro crashed as (corrupted=false):
list_del corruption. prev->next should be ffff0000d86d6828, but was ffff800016216e60. (prev=ffff800016216e60)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4299 Comm: syz-executor237 Not tainted 6.1.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59
lr : __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59
sp : ffff800021147890
x29: ffff800021147890 x28: 1ffff00002b4faa9 x27: dfff800000000000
x26: 0000000000000002 x25: 0000000000000002 x24: ffff0000d86d4828
x23: dfff800000000000 x22: dfff800000000000 x21: ffff800016216e60
x20: ffff0000d86d4828 x19: ffff0000d86d6828 x18: 1fffe0003679c376
x17: ffff800015a7d000 x16: ffff800012325074 x15: ffff0001b3ce1bbc
x14: 1ffff00002b500b2 x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : 61343651e53ef400
x8 : 61343651e53ef400 x7 : ffff800008277348 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000ab33a2c
x2 : ffff0001b3ce1cd0 x1 : 0000000100000000 x0 : 000000000000006d
Call trace:
 __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59
 __list_del_entry include/linux/list.h:134 [inline]
 list_del include/linux/list.h:148 [inline]
 efivar_entry_remove+0x38/0x110 fs/efivarfs/vars.c:493
 efivarfs_destroy+0x20/0x3c fs/efivarfs/super.c:184
 efivar_entry_iter+0x94/0xdc fs/efivarfs/vars.c:720
 efivarfs_kill_sb+0x58/0x70 fs/efivarfs/super.c:258
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 910b8000 aa1303e1 aa1503e3 95de0097 (d4210000) 
---[ end trace 0000000000000000 ]---

final repro crashed as (corrupted=false):
list_del corruption. prev->next should be ffff0000d86d6828, but was ffff800016216e60. (prev=ffff800016216e60)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4299 Comm: syz-executor237 Not tainted 6.1.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59
lr : __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59
sp : ffff800021147890
x29: ffff800021147890 x28: 1ffff00002b4faa9 x27: dfff800000000000
x26: 0000000000000002 x25: 0000000000000002 x24: ffff0000d86d4828
x23: dfff800000000000 x22: dfff800000000000 x21: ffff800016216e60
x20: ffff0000d86d4828 x19: ffff0000d86d6828 x18: 1fffe0003679c376
x17: ffff800015a7d000 x16: ffff800012325074 x15: ffff0001b3ce1bbc
x14: 1ffff00002b500b2 x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : 61343651e53ef400
x8 : 61343651e53ef400 x7 : ffff800008277348 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000ab33a2c
x2 : ffff0001b3ce1cd0 x1 : 0000000100000000 x0 : 000000000000006d
Call trace:
 __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59
 __list_del_entry include/linux/list.h:134 [inline]
 list_del include/linux/list.h:148 [inline]
 efivar_entry_remove+0x38/0x110 fs/efivarfs/vars.c:493
 efivarfs_destroy+0x20/0x3c fs/efivarfs/super.c:184
 efivar_entry_iter+0x94/0xdc fs/efivarfs/vars.c:720
 efivarfs_kill_sb+0x58/0x70 fs/efivarfs/super.c:258
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 910b8000 aa1303e1 aa1503e3 95de0097 (d4210000) 
---[ end trace 0000000000000000 ]---