Extracting prog: 3m25.640266715s
Minimizing prog: 114.04µs
Simplifying prog options: 0s
Extracting C: 2m12.57833617s
Simplifying C: 8m47.216675278s
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_mount_image$ocfs2
detailed listing:
executing program 0:
syz_mount_image$ocfs2(&(0x7f0000004440), &(0x7f0000000240)='./file0\x00', 0x0, &(0x7f0000000280)=ANY=[@ANYBLOB="61636c2c6865617274626561743d6e6f6e652c6572726f72733d72656d6f756e742d726f2c636f686572656e63793d66756c6c2c636f686572656e63793d66756c6c2c6c6f63616c666c6f636b732c696e74722c6e6f61636c2c001967b9b8a6cdd636d75428f2c5e8054d01858eef552755576e749526b36860cf2511040d1ce5a743ffd83d29d1ba3a54a59d8c7aa249f08d3c8c6d04ac105d67934db6190d59f2323b55a5a4"], 0x1, 0x4458, 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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}}): syz_mount_image$ocfs2
detailed listing:
executing program 0:
syz_mount_image$ocfs2(&(0x7f0000004440), &(0x7f0000000240)='./file0\x00', 0x0, &(0x7f0000000280)=ANY=[@ANYBLOB="61636c2c6865617274626561743d6e6f6e652c6572726f72733d72656d6f756e742d726f2c636f686572656e63793d66756c6c2c636f686572656e63793d66756c6c2c6c6f63616c666c6f636b732c696e74722c6e6f61636c2c001967b9b8a6cdd636d75428f2c5e8054d01858eef552755576e749526b36860cf2511040d1ce5a743ffd83d29d1ba3a54a59d8c7aa249f08d3c8c6d04ac105d67934db6190d59f2323b55a5a4"], 0x1, 0x4458, 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program crashed: kernel BUG in ocfs2_write_block
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
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}}): syz_mount_image$ocfs2
program crashed: kernel BUG in ocfs2_write_block
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2
program crashed: kernel BUG in ocfs2_write_block
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}}): syz_mount_image$ocfs2
program crashed: kernel BUG in ocfs2_write_block
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2
program crashed: kernel BUG in ocfs2_write_block
testing compiled C program (duration=1m40s, {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:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2
program crashed: kernel BUG in ocfs2_write_block
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2
program crashed: kernel BUG in ocfs2_write_block
testing compiled C program (duration=1m40s, {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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2
program crashed: kernel BUG in ocfs2_write_block
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2
program crashed: kernel BUG in ocfs2_write_block
reproducing took 14m25.435409002s
repro crashed as (corrupted=false):
loop0: detected capacity change from 0 to 32768
ocfs2: Slot 0 on device (7,0) was already allocated to this node!
------------[ cut here ]------------
kernel BUG at fs/ocfs2/buffer_head_io.c:45!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 5829 Comm: syz-executor178 Not tainted 6.16.0-rc2-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ocfs2_write_block+0x5d2/0x640 fs/ocfs2/buffer_head_io.c:45
Code: 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 15 35 8b fe 49 8b 3f 4c 89 ee 48 8b 14 24 e8 16 7f 0f 00 eb 1f e8 9f e1 29 fe 90 <0f> 0b e8 97 e1 29 fe 90 0f 0b e8 8f e1 29 fe e9 ce fa ff ff e8 85
RSP: 0018:ffffc9000446ef60 EFLAGS: 00010293
RAX: ffffffff839679a1 RBX: 1ffff1100fbf2d08 RCX: ffff88802afdda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc9000446f030 R08: ffffffff8f9fe2f7 R09: 1ffffffff1f3fc5e
R10: dffffc0000000000 R11: fffffbfff1f3fc5f R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807df96828 R15: 0000000000000001
FS: 0000555561ef9380(0000) GS:ffff888125d85000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37b64a5000 CR3: 00000000732d0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ocfs2_update_disk_slot+0x6c6/0x9c0 fs/ocfs2/slot_map.c:197
ocfs2_find_slot+0x6bb/0xc30 fs/ocfs2/slot_map.c:482
ocfs2_mount_volume fs/ocfs2/super.c:1749 [inline]
ocfs2_fill_super+0x3ef4/0x63d0 fs/ocfs2/super.c:1083
get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1679
vfs_get_tree+0x92/0x2b0 fs/super.c:1802
do_new_mount+0x24a/0xa40 fs/namespace.c:3885
do_mount fs/namespace.c:4222 [inline]
__do_sys_mount fs/namespace.c:4433 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4410
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f386b557e2a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe106b6d58 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe106b6d70 RCX: 00007f386b557e2a
RDX: 0000200000004440 RSI: 0000200000000240 RDI: 00007ffe106b6d70
RBP: 0000200000000240 R08: 00007ffe106b6db0 R09: 0000000000004452
R10: 0000000000000000 R11: 0000000000000282 R12: 0000200000004440
R13: 00007ffe106b6db0 R14: 0000000000000003 R15: 0000000000000000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_write_block+0x5d2/0x640 fs/ocfs2/buffer_head_io.c:45
Code: 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 15 35 8b fe 49 8b 3f 4c 89 ee 48 8b 14 24 e8 16 7f 0f 00 eb 1f e8 9f e1 29 fe 90 <0f> 0b e8 97 e1 29 fe 90 0f 0b e8 8f e1 29 fe e9 ce fa ff ff e8 85
RSP: 0018:ffffc9000446ef60 EFLAGS: 00010293
RAX: ffffffff839679a1 RBX: 1ffff1100fbf2d08 RCX: ffff88802afdda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc9000446f030 R08: ffffffff8f9fe2f7 R09: 1ffffffff1f3fc5e
R10: dffffc0000000000 R11: fffffbfff1f3fc5f R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807df96828 R15: 0000000000000001
FS: 0000555561ef9380(0000) GS:ffff888125c85000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005585222a53f8 CR3: 00000000732d0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
final repro crashed as (corrupted=false):
loop0: detected capacity change from 0 to 32768
ocfs2: Slot 0 on device (7,0) was already allocated to this node!
------------[ cut here ]------------
kernel BUG at fs/ocfs2/buffer_head_io.c:45!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 5829 Comm: syz-executor178 Not tainted 6.16.0-rc2-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ocfs2_write_block+0x5d2/0x640 fs/ocfs2/buffer_head_io.c:45
Code: 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 15 35 8b fe 49 8b 3f 4c 89 ee 48 8b 14 24 e8 16 7f 0f 00 eb 1f e8 9f e1 29 fe 90 <0f> 0b e8 97 e1 29 fe 90 0f 0b e8 8f e1 29 fe e9 ce fa ff ff e8 85
RSP: 0018:ffffc9000446ef60 EFLAGS: 00010293
RAX: ffffffff839679a1 RBX: 1ffff1100fbf2d08 RCX: ffff88802afdda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc9000446f030 R08: ffffffff8f9fe2f7 R09: 1ffffffff1f3fc5e
R10: dffffc0000000000 R11: fffffbfff1f3fc5f R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807df96828 R15: 0000000000000001
FS: 0000555561ef9380(0000) GS:ffff888125d85000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37b64a5000 CR3: 00000000732d0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ocfs2_update_disk_slot+0x6c6/0x9c0 fs/ocfs2/slot_map.c:197
ocfs2_find_slot+0x6bb/0xc30 fs/ocfs2/slot_map.c:482
ocfs2_mount_volume fs/ocfs2/super.c:1749 [inline]
ocfs2_fill_super+0x3ef4/0x63d0 fs/ocfs2/super.c:1083
get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1679
vfs_get_tree+0x92/0x2b0 fs/super.c:1802
do_new_mount+0x24a/0xa40 fs/namespace.c:3885
do_mount fs/namespace.c:4222 [inline]
__do_sys_mount fs/namespace.c:4433 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4410
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f386b557e2a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe106b6d58 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe106b6d70 RCX: 00007f386b557e2a
RDX: 0000200000004440 RSI: 0000200000000240 RDI: 00007ffe106b6d70
RBP: 0000200000000240 R08: 00007ffe106b6db0 R09: 0000000000004452
R10: 0000000000000000 R11: 0000000000000282 R12: 0000200000004440
R13: 00007ffe106b6db0 R14: 0000000000000003 R15: 0000000000000000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_write_block+0x5d2/0x640 fs/ocfs2/buffer_head_io.c:45
Code: 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 15 35 8b fe 49 8b 3f 4c 89 ee 48 8b 14 24 e8 16 7f 0f 00 eb 1f e8 9f e1 29 fe 90 <0f> 0b e8 97 e1 29 fe 90 0f 0b e8 8f e1 29 fe e9 ce fa ff ff e8 85
RSP: 0018:ffffc9000446ef60 EFLAGS: 00010293
RAX: ffffffff839679a1 RBX: 1ffff1100fbf2d08 RCX: ffff88802afdda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc9000446f030 R08: ffffffff8f9fe2f7 R09: 1ffffffff1f3fc5e
R10: dffffc0000000000 R11: fffffbfff1f3fc5f R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807df96828 R15: 0000000000000001
FS: 0000555561ef9380(0000) GS:ffff888125c85000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005585222a53f8 CR3: 00000000732d0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400