Extracting prog: 1m27.945309854s
Minimizing prog: 4m37.706215296s
Simplifying prog options: 0s
Extracting C: 1m6.853698741s
Simplifying C: 4m40.388039277s


1 programs, 3 VMs, timeouts [15s 6m0s]
extracting reproducer from 1 programs
single: executing 1 programs separately with timeout 15s
testing program (duration=15s, {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}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
detailed listing:
executing program 0:
r0 = openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r0, 0x4c80, 0xb0275faa5ab88745)
r1 = openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r1, 0x4c81, 0xb0275faa5ab88745)

program crashed: WARNING in del_gendisk
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=22.5s, {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}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl
detailed listing:
executing program 0:
r0 = openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r0, 0x4c80, 0xb0275faa5ab88745)
openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)

program did not crash
testing program (duration=22.5s, {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}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-ioctl$BTRFS_IOC_BALANCE_CTL
detailed listing:
executing program 0:
r0 = openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r0, 0x4c80, 0xb0275faa5ab88745)
ioctl$BTRFS_IOC_BALANCE_CTL(0xffffffffffffffff, 0x4c81, 0xb0275faa5ab88745)

program did not crash
testing program (duration=22.5s, {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}}): openat$loop_ctrl-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
detailed listing:
executing program 0:
openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
r0 = openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r0, 0x4c81, 0xb0275faa5ab88745)

program did not crash
testing program (duration=22.5s, {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}}): ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
detailed listing:
executing program 0:
ioctl$BTRFS_IOC_BALANCE_CTL(0xffffffffffffffff, 0x4c80, 0xb0275faa5ab88745)
r0 = openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r0, 0x4c81, 0xb0275faa5ab88745)

program did not crash
testing program (duration=22.5s, {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}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
detailed listing:
executing program 0:
r0 = openat$loop_ctrl(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r0, 0x4c80, 0xb0275faa5ab88745)
r1 = openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r1, 0x4c81, 0xb0275faa5ab88745)

program did not crash
testing program (duration=22.5s, {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}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
detailed listing:
executing program 0:
r0 = openat$loop_ctrl(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r0, 0x4c80, 0xb0275faa5ab88745)
r1 = openat$loop_ctrl(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(r1, 0x4c81, 0xb0275faa5ab88745)

program did not crash
extracting C reproducer
testing compiled C program (duration=22.5s, {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}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
program crashed: WARNING in del_gendisk
simplifying C reproducer
testing compiled C program (duration=22.5s, {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}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
program crashed: WARNING in del_gendisk
testing compiled C program (duration=22.5s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
program crashed: WARNING in del_gendisk
testing compiled C program (duration=22.5s, {Threaded:false Repeat:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
program crashed: WARNING in del_gendisk
testing compiled C program (duration=22.5s, {Threaded:false Repeat:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
program crashed: WARNING in del_gendisk
testing compiled C program (duration=22.5s, {Threaded:false Repeat:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
program crashed: WARNING in del_gendisk
testing compiled C program (duration=22.5s, {Threaded:false Repeat:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
program crashed: WARNING in del_gendisk
testing compiled C program (duration=22.5s, {Threaded:false Repeat:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL-openat$loop_ctrl-ioctl$BTRFS_IOC_BALANCE_CTL
program crashed: WARNING in del_gendisk
reproducing took 11m52.893281298s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3965 at block/genhd.c:592 del_gendisk+0x698/0x72c block/genhd.c:592
Modules linked in:
CPU: 1 PID: 3965 Comm: syz-executor660 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : del_gendisk+0x698/0x72c block/genhd.c:592
lr : del_gendisk+0x698/0x72c block/genhd.c:592
sp : ffff80001c547bc0
x29: ffff80001c547be0 x28: ffff0000da4b9b40 x27: 1fffe0001b1b662a
x26: 1fffe0001917db10 x25: 1ffff000038a8f88 x24: ffff0000c8bed880
x23: 0000000000000000 x22: ffff0000c8bed8a0 x21: ffff0000c8bed800
x20: ffff0000cd2e1c70 x19: 0000000000000240 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082e9eec x15: 0000000000004c82
x14: 1ffff0000292a06a x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000da4b9b40
x8 : ffff80000a849e0c x7 : ffff80000c048b20 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800011a61788
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 del_gendisk+0x698/0x72c block/genhd.c:592
 loop_remove drivers/block/loop.c:2452 [inline]
 loop_control_remove drivers/block/loop.c:2509 [inline]
 loop_control_ioctl+0x4a8/0x62c drivers/block/loop.c:2547
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 13636
hardirqs last  enabled at (13635): [<ffff8000088cedfc>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231
hardirqs last disabled at (13636): [<ffff800011997b20>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (13248): [<ffff800008021c64>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (13248): [<ffff800008021c64>] __do_softirq+0xb5c/0xdb0 kernel/softirq.c:587
softirqs last disabled at (13237): [<ffff8000081b6568>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (13237): [<ffff8000081b6568>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (13237): [<ffff8000081b6568>] __irq_exit_rcu+0x264/0x4d4 kernel/softirq.c:637
---[ end trace b1a8b957eccbc118 ]---

final repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3965 at block/genhd.c:592 del_gendisk+0x698/0x72c block/genhd.c:592
Modules linked in:
CPU: 1 PID: 3965 Comm: syz-executor660 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : del_gendisk+0x698/0x72c block/genhd.c:592
lr : del_gendisk+0x698/0x72c block/genhd.c:592
sp : ffff80001c547bc0
x29: ffff80001c547be0 x28: ffff0000da4b9b40 x27: 1fffe0001b1b662a
x26: 1fffe0001917db10 x25: 1ffff000038a8f88 x24: ffff0000c8bed880
x23: 0000000000000000 x22: ffff0000c8bed8a0 x21: ffff0000c8bed800
x20: ffff0000cd2e1c70 x19: 0000000000000240 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082e9eec x15: 0000000000004c82
x14: 1ffff0000292a06a x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000da4b9b40
x8 : ffff80000a849e0c x7 : ffff80000c048b20 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800011a61788
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 del_gendisk+0x698/0x72c block/genhd.c:592
 loop_remove drivers/block/loop.c:2452 [inline]
 loop_control_remove drivers/block/loop.c:2509 [inline]
 loop_control_ioctl+0x4a8/0x62c drivers/block/loop.c:2547
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 13636
hardirqs last  enabled at (13635): [<ffff8000088cedfc>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231
hardirqs last disabled at (13636): [<ffff800011997b20>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (13248): [<ffff800008021c64>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (13248): [<ffff800008021c64>] __do_softirq+0xb5c/0xdb0 kernel/softirq.c:587
softirqs last disabled at (13237): [<ffff8000081b6568>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (13237): [<ffff8000081b6568>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (13237): [<ffff8000081b6568>] __irq_exit_rcu+0x264/0x4d4 kernel/softirq.c:637
---[ end trace b1a8b957eccbc118 ]---