Extracting prog: 2m16.961357754s
Minimizing prog: 4m32.937150283s
Simplifying prog options: 0s
Extracting C: 44.452621583s
Simplifying C: 8m18.148307708s


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$hfs-open
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000040), &(0x7f0000000100)='./file1\x00', 0x30008c8, &(0x7f0000000340)=ANY=[@ANYBLOB="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"], 0x51, 0x2c3, &(0x7f0000000680)="$eJzs3U9rE08cx/HPbNI2v19L3dqK4LG2oBfRehEvEcmD8CRqE6EYKmrFP6cqnkT07t2n4FMQvCg+AT158gHUg6zM7OT/7CYtTda07xc0bHZndr6T/TPzXSgrAMfW9dr3D5d/2j8jlVSSXl+VIkkVqSzplE5XHm/vbO00G3Vp7VPWjkquhv0zSmuagTKb241QVVvP1fBi+62she51GI8kSa79KDoIFM5d/QGRNOevTre9MvHI8r04QJ1/rQ9FMHva01MtFh0HAKBYfvyP/Di/4OfvUSStdw+ZR2Xs3Cs6gLFLcrd2jf8uy0qMPe4n3KZOvudSOLs9amWJo7Q80/d9VumZ1TPB7GolzMUS/Xd3q9m4sHm/WY/0UlWvq9iK+6ynp27LkGhXA7lpjhH6bqTdwOp514cZ24eNNP4nknriXz5giwdmPpuv5qaJ9V719vyvnBh7mNyRivuOVBr/xew9ul7GtpT8baNarUY9RZZcI2d8C96QXlbCGYlaZ9SSeh8QxMPidLVO9tVKe3dpSK3lYK2N1reMWis9tWxv2mdzdnvjZt6aG2ZVv/RRta75f2TjW1fuldm5asx6OhS4Xzztz2y4ubLbZzwwcgxeLu1fcS4r9N/59zTswxvd0RUtPnr2/F6p2Ww8tAu3AwsPFtprZl5JwTIFL2i3s2ZOiTNQuDUoTTKw84e6Q3v/GFrYXmWBTbbnRR+mI7RQ+zLZE6mIhWJvT5iM3lsEjiE77zJp/tfJV8rpZM9+xMF5+ogPAvweEzvHbmdwnbpJOiOX9P++Mrj57AxuMOcayBldznX2nLQ2eouxj3PKxBnrTU3fdIvn/wAAAAAAAAAAAAAAAAAAANNmEv9OUHQfAQAAAAAAAAAAAAAAAAAAAACYdu33/6r1/l/lvf+3o/9VLIfw/t8/fp/xu23x/l9g/P4GAAD//xQmfXs=")
open(&(0x7f0000000200)='./bus\x00', 0x14d27e, 0x0)

program crashed: WARNING in hfs_bnode_create
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=1m5.986023862s, {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$hfs
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000040), &(0x7f0000000100)='./file1\x00', 0x30008c8, &(0x7f0000000340)=ANY=[@ANYBLOB="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"], 0x51, 0x2c3, &(0x7f0000000680)="$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")

program did not crash
testing program (duration=1m5.986023862s, {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}}): open
detailed listing:
executing program 0:
open(&(0x7f0000000200)='./bus\x00', 0x14d27e, 0x0)

program did not crash
testing program (duration=1m5.986023862s, {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$hfs-open
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000040), &(0x7f0000000100)='./file1\x00', 0x30008c8, &(0x7f0000000340)=ANY=[@ANYBLOB="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"], 0x51, 0x2c3, &(0x7f0000000680)="$eJzs3U9rE08cx/HPbNI2v19L3dqK4LG2oBfRehEvEcmD8CRqE6EYKmrFP6cqnkT07t2n4FMQvCg+AT158gHUg6zM7OT/7CYtTda07xc0bHZndr6T/TPzXSgrAMfW9dr3D5d/2j8jlVSSXl+VIkkVqSzplE5XHm/vbO00G3Vp7VPWjkquhv0zSmuagTKb241QVVvP1fBi+62she51GI8kSa79KDoIFM5d/QGRNOevTre9MvHI8r04QJ1/rQ9FMHva01MtFh0HAKBYfvyP/Di/4OfvUSStdw+ZR2Xs3Cs6gLFLcrd2jf8uy0qMPe4n3KZOvudSOLs9amWJo7Q80/d9VumZ1TPB7GolzMUS/Xd3q9m4sHm/WY/0UlWvq9iK+6ynp27LkGhXA7lpjhH6bqTdwOp514cZ24eNNP4nknriXz5giwdmPpuv5qaJ9V719vyvnBh7mNyRivuOVBr/xew9ul7GtpT8baNarUY9RZZcI2d8C96QXlbCGYlaZ9SSeh8QxMPidLVO9tVKe3dpSK3lYK2N1reMWis9tWxv2mdzdnvjZt6aG2ZVv/RRta75f2TjW1fuldm5asx6OhS4Xzztz2y4ubLbZzwwcgxeLu1fcS4r9N/59zTswxvd0RUtPnr2/F6p2Ww8tAu3AwsPFtprZl5JwTIFL2i3s2ZOiTNQuDUoTTKw84e6Q3v/GFrYXmWBTbbnRR+mI7RQ+zLZE6mIhWJvT5iM3lsEjiE77zJp/tfJV8rpZM9+xMF5+ogPAvweEzvHbmdwnbpJOiOX9P++Mrj57AxuMOcayBldznX2nLQ2eouxj3PKxBnrTU3fdIvn/wAAAAAAAAAAAAAAAAAAANNmEv9OUHQfAQAAAAAAAAAAAAAAAAAAAACYdu33/6r1/l/lvf+3o/9VLIfw/t8/fp/xu23x/l9g/P4GAAD//xQmfXs=")
open(0x0, 0x14d27e, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m5.986023862s, {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$hfs-open
program crashed: WARNING in hfs_bnode_create
simplifying C reproducer
testing compiled C program (duration=1m5.986023862s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-open
program crashed: WARNING in hfs_bnode_create
testing compiled C program (duration=1m5.986023862s, {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$hfs-open
program crashed: WARNING in hfs_bnode_create
testing compiled C program (duration=1m5.986023862s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-open
program crashed: WARNING in hfs_bnode_create
testing compiled C program (duration=1m5.986023862s, {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$hfs-open
program crashed: WARNING in hfs_bnode_create
testing compiled C program (duration=1m5.986023862s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-open
program crashed: WARNING in hfs_bnode_create
testing compiled C program (duration=1m5.986023862s, {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$hfs-open
program crashed: WARNING in hfs_bnode_create
testing compiled C program (duration=1m5.986023862s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-open
program crashed: WARNING in hfs_bnode_create
reproducing took 15m52.499454908s
repro crashed as (corrupted=false):
hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1027 at fs/hfs/bnode.c:422 hfs_bnode_create+0x3b6/0x440 fs/hfs/bnode.c:422
Modules linked in:
CPU: 1 UID: 0 PID: 1027 Comm: kworker/u8:5 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:hfs_bnode_create+0x3b6/0x440 fs/hfs/bnode.c:422
Code: 44 89 e6 e8 bc 06 39 09 e9 78 fd ff ff e8 d2 56 0e ff 4c 89 ff e8 5a bf 45 09 48 c7 c7 80 4b 22 8c 44 89 e6 e8 9b 06 39 09 90 <0f> 0b 90 eb af 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 83 fc ff ff 48
RSP: 0000:ffffc90003d06cb8 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88802700da00 RCX: d5e5a2caafb97c00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8174dddc R09: 1ffff920007a0d34
R10: dffffc0000000000 R11: fffff520007a0d35 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880245d2000 R15: ffff8880245d20e0
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4e1cf5dd38 CR3: 000000000e738000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5a6/0x650 fs/hfs/btree.c:291
 hfs_btree_inc_height+0x11e/0xd20 fs/hfs/brec.c:471
 hfs_brec_insert+0x15b/0xbd0 fs/hfs/brec.c:77
 __hfs_ext_write_extent+0x2f2/0x4f0 fs/hfs/extent.c:124
 hfs_ext_write_extent+0x154/0x1d0 fs/hfs/extent.c:144
 hfs_write_inode+0xbc/0xec0 fs/hfs/inode.c:429
 write_inode fs/fs-writeback.c:1525 [inline]
 __writeback_single_inode+0x711/0x10d0 fs/fs-writeback.c:1745
 writeback_sb_inodes+0x80c/0x1370 fs/fs-writeback.c:1976
 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2047
 wb_writeback+0x427/0xbc0 fs/fs-writeback.c:2158
 wb_check_background_flush fs/fs-writeback.c:2228 [inline]
 wb_do_writeback fs/fs-writeback.c:2316 [inline]
 wb_workfn+0xc58/0x1090 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

final repro crashed as (corrupted=false):
hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1027 at fs/hfs/bnode.c:422 hfs_bnode_create+0x3b6/0x440 fs/hfs/bnode.c:422
Modules linked in:
CPU: 1 UID: 0 PID: 1027 Comm: kworker/u8:5 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:hfs_bnode_create+0x3b6/0x440 fs/hfs/bnode.c:422
Code: 44 89 e6 e8 bc 06 39 09 e9 78 fd ff ff e8 d2 56 0e ff 4c 89 ff e8 5a bf 45 09 48 c7 c7 80 4b 22 8c 44 89 e6 e8 9b 06 39 09 90 <0f> 0b 90 eb af 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 83 fc ff ff 48
RSP: 0000:ffffc90003d06cb8 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88802700da00 RCX: d5e5a2caafb97c00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8174dddc R09: 1ffff920007a0d34
R10: dffffc0000000000 R11: fffff520007a0d35 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880245d2000 R15: ffff8880245d20e0
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4e1cf5dd38 CR3: 000000000e738000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5a6/0x650 fs/hfs/btree.c:291
 hfs_btree_inc_height+0x11e/0xd20 fs/hfs/brec.c:471
 hfs_brec_insert+0x15b/0xbd0 fs/hfs/brec.c:77
 __hfs_ext_write_extent+0x2f2/0x4f0 fs/hfs/extent.c:124
 hfs_ext_write_extent+0x154/0x1d0 fs/hfs/extent.c:144
 hfs_write_inode+0xbc/0xec0 fs/hfs/inode.c:429
 write_inode fs/fs-writeback.c:1525 [inline]
 __writeback_single_inode+0x711/0x10d0 fs/fs-writeback.c:1745
 writeback_sb_inodes+0x80c/0x1370 fs/fs-writeback.c:1976
 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2047
 wb_writeback+0x427/0xbc0 fs/fs-writeback.c:2158
 wb_check_background_flush fs/fs-writeback.c:2228 [inline]
 wb_do_writeback fs/fs-writeback.c:2316 [inline]
 wb_workfn+0xc58/0x1090 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>