Extracting prog: 3m50.132030238s
Minimizing prog: 50m6.770806885s
Simplifying prog options: 0s
Extracting C: 42.151130755s
Simplifying C: 10m52.977469701s


1 programs, timeouts [30s 6m0s]
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:6 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$minix-openat$cgroup_ro-openat-mount
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$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")
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='blkio.bfq.io_queued_recursive\x00', 0x275a, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./bus\x00', 0x42, 0x0)
mount(&(0x7f0000000380)=@loop={'/dev/loop', 0x0}, &(0x7f0000000340)='./bus\x00', 0x0, 0x1000, 0x0)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-openat-mount
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$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")
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='blkio.bfq.io_queued_recursive\x00', 0x275a, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./bus\x00', 0x42, 0x0)
mount(&(0x7f0000000380)=@loop={'/dev/loop', 0x0}, &(0x7f0000000340)='./bus\x00', 0x0, 0x1000, 0x0)

program crashed: WARNING in drop_nlink
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-openat
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$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")
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='blkio.bfq.io_queued_recursive\x00', 0x275a, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./bus\x00', 0x42, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-mount
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$eJzs271u2lAUwPFj7GKgX7S0HapKRerQLsVAW6Ru7aNQcBGqaaKQBcRA8gJ5hrxfGKIsmULk648oBoNCAIP8/w3Y3HM/zgWudIRkAZBav6QsmmiScd98yBXPSlrSKQHYkql/vZkCSB/92ruWk04EwJZNfouq/S8uRy3Rs2FdENy58XEQz5gz9cPkROS94ce1nOSj9cW5yOdgvFaIDr9yWwph/GkknFXzf/kUrP9MnssLeSlFeSWvpeSv3w7Hv3to+TO7IQAAUkCTyrJ4TIcn6jUvf7uOXVU9I/58V73ceC12/qyK1xfG9Y/x+ZlqfKV14LQX7gPArMzK59+jh+d/PmPJ+QeQnP5g+K/pOPbRDtzk7uczNUU2uKi5C1ve3xtToi3GWmbOx4ZOZV7I/dGsc18j/2Bs9jMcR1vcajrJ79TwVtf9NPhfDEgB67h3aPUHw6/dXrNjd+z/9Wr1Z+PHt1qjbqnK3lpc3wPYX3dlQNKZAAAAAAAAAAAAAACAVb2Rt0mnAAAAAGBLlj4YJIbX8REPGCW9RwAAds5tAAAA//8YBw3V")
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='blkio.bfq.io_queued_recursive\x00', 0x275a, 0x0)
mount(&(0x7f0000000380)=@loop={'/dev/loop', 0x0}, &(0x7f0000000340)='./bus\x00', 0x0, 0x1000, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat-mount
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./bus\x00', 0x42, 0x0)
mount(&(0x7f0000000380)=@loop={'/dev/loop', 0x0}, &(0x7f0000000340)='./bus\x00', 0x0, 0x1000, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$cgroup_ro-openat-mount
detailed listing:
executing program 0:
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='blkio.bfq.io_queued_recursive\x00', 0x275a, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./bus\x00', 0x42, 0x0)
mount(&(0x7f0000000380)=@loop={'/dev/loop', 0x0}, &(0x7f0000000340)='./bus\x00', 0x0, 0x1000, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-openat-mount
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$eJzs271u2lAUwPFj7GKgX7S0HapKRerQLsVAW6Ru7aNQcBGqaaKQBcRA8gJ5hrxfGKIsmULk648oBoNCAIP8/w3Y3HM/zgWudIRkAZBav6QsmmiScd98yBXPSlrSKQHYkql/vZkCSB/92ruWk04EwJZNfouq/S8uRy3Rs2FdENy58XEQz5gz9cPkROS94ce1nOSj9cW5yOdgvFaIDr9yWwph/GkknFXzf/kUrP9MnssLeSlFeSWvpeSv3w7Hv3to+TO7IQAAUkCTyrJ4TIcn6jUvf7uOXVU9I/58V73ceC12/qyK1xfG9Y/x+ZlqfKV14LQX7gPArMzK59+jh+d/PmPJ+QeQnP5g+K/pOPbRDtzk7uczNUU2uKi5C1ve3xtToi3GWmbOx4ZOZV7I/dGsc18j/2Bs9jMcR1vcajrJ79TwVtf9NPhfDEgB67h3aPUHw6/dXrNjd+z/9Wr1Z+PHt1qjbqnK3lpc3wPYX3dlQNKZAAAAAAAAAAAAAACAVb2Rt0mnAAAAAGBLlj4YJIbX8REPGCW9RwAAds5tAAAA//8YBw3V")
openat$cgroup_ro(0xffffffffffffff9c, 0x0, 0x275a, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./bus\x00', 0x42, 0x0)
mount(&(0x7f0000000380)=@loop={'/dev/loop', 0x0}, &(0x7f0000000340)='./bus\x00', 0x0, 0x1000, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-openat-mount
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$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")
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='blkio.bfq.io_queued_recursive\x00', 0x275a, 0x0)
openat(0xffffffffffffff9c, 0x0, 0x42, 0x0)
mount(&(0x7f0000000380)=@loop={'/dev/loop', 0x0}, &(0x7f0000000340)='./bus\x00', 0x0, 0x1000, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-openat-mount
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$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")
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='blkio.bfq.io_queued_recursive\x00', 0x275a, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./bus\x00', 0x42, 0x0)
mount(0x0, &(0x7f0000000340)='./bus\x00', 0x0, 0x1000, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-openat-mount
detailed listing:
executing program 0:
syz_mount_image$minix(&(0x7f0000000040), &(0x7f0000000140)='./file1\x00', 0x42, &(0x7f0000000540)=ANY=[], 0xd, 0x1a4, &(0x7f0000000640)="$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")
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000000)='blkio.bfq.io_queued_recursive\x00', 0x275a, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./bus\x00', 0x42, 0x0)
mount(&(0x7f0000000380)=@loop={'/dev/loop', 0x0}, 0x0, 0x0, 0x1000, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-openat-mount
program crashed: WARNING in drop_nlink
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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$minix-openat$cgroup_ro-openat-mount
program crashed: WARNING in drop_nlink
testing compiled C program (duration=6m0s, {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$minix-openat$cgroup_ro-openat-mount
program crashed: WARNING in drop_nlink
testing compiled C program (duration=6m0s, {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$minix-openat$cgroup_ro-openat-mount
program crashed: WARNING in drop_nlink
testing compiled C program (duration=6m0s, {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$minix-openat$cgroup_ro-openat-mount
program crashed: WARNING in drop_nlink
testing compiled C program (duration=6m0s, {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$minix-openat$cgroup_ro-openat-mount
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {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:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$minix-openat$cgroup_ro-openat-mount
program crashed: WARNING in drop_nlink
testing compiled C program (duration=6m0s, {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:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$minix-openat$cgroup_ro-openat-mount
program crashed: WARNING in drop_nlink
reproducing took 1h5m32.031466606s
repro crashed as (corrupted=false):
minix_free_block (loop0:21): bit already cleared
minix_free_block (loop0:19): bit already cleared
minix_free_block (loop0:22): bit already cleared
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5096 at fs/inode.c:334 drop_nlink+0xc4/0x110 fs/inode.c:334
Modules linked in:
CPU: 0 UID: 0 PID: 5096 Comm: syz-executor363 Not tainted 6.11.0-syzkaller-08833-gde5cb0dcb74c #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:drop_nlink+0xc4/0x110 fs/inode.c:334
Code: bb 70 07 00 00 be 08 00 00 00 e8 a7 15 e6 ff 3e 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 ed 5e 7c ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
RSP: 0018:ffffc90002e2fc30 EFLAGS: 00010293
RAX: ffffffff82185ac3 RBX: 1ffff11000122163 RCX: ffff888000124880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff82185a43 R09: 1ffffd40000fe7d6
R10: dffffc0000000000 R11: fffff940000fe7d7 R12: ffff888000910b18
R13: 0000000066f1a2ae R14: ffff888000910ad0 R15: dffffc0000000000
FS:  0000555570ce9380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd19ef2e28 CR3: 000000001e388000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_dec_link_count include/linux/fs.h:2509 [inline]
 minix_unlink+0x25b/0x320 fs/minix/namei.c:157
 vfs_unlink+0x365/0x650 fs/namei.c:4469
 do_unlinkat+0x4ae/0x830 fs/namei.c:4533
 __do_sys_unlink fs/namei.c:4581 [inline]
 __se_sys_unlink fs/namei.c:4579 [inline]
 __x64_sys_unlink+0x47/0x50 fs/namei.c:4579
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff5c3f6cb97
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 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:00007fffcb0c1a68 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff5c3f6cb97
RDX: 00007fffcb0c1a90 RSI: 00007fffcb0c1b20 RDI: 00007fffcb0c1b20
RBP: 00007fffcb0c1b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007fffcb0c2c10
R13: 0000555570cf2700 R14: 0000000000000001 R15: 431bde82d7b634db
 </TASK>

final repro crashed as (corrupted=false):
minix_free_block (loop0:21): bit already cleared
minix_free_block (loop0:19): bit already cleared
minix_free_block (loop0:22): bit already cleared
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5096 at fs/inode.c:334 drop_nlink+0xc4/0x110 fs/inode.c:334
Modules linked in:
CPU: 0 UID: 0 PID: 5096 Comm: syz-executor363 Not tainted 6.11.0-syzkaller-08833-gde5cb0dcb74c #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:drop_nlink+0xc4/0x110 fs/inode.c:334
Code: bb 70 07 00 00 be 08 00 00 00 e8 a7 15 e6 ff 3e 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 ed 5e 7c ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
RSP: 0018:ffffc90002e2fc30 EFLAGS: 00010293
RAX: ffffffff82185ac3 RBX: 1ffff11000122163 RCX: ffff888000124880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff82185a43 R09: 1ffffd40000fe7d6
R10: dffffc0000000000 R11: fffff940000fe7d7 R12: ffff888000910b18
R13: 0000000066f1a2ae R14: ffff888000910ad0 R15: dffffc0000000000
FS:  0000555570ce9380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd19ef2e28 CR3: 000000001e388000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_dec_link_count include/linux/fs.h:2509 [inline]
 minix_unlink+0x25b/0x320 fs/minix/namei.c:157
 vfs_unlink+0x365/0x650 fs/namei.c:4469
 do_unlinkat+0x4ae/0x830 fs/namei.c:4533
 __do_sys_unlink fs/namei.c:4581 [inline]
 __se_sys_unlink fs/namei.c:4579 [inline]
 __x64_sys_unlink+0x47/0x50 fs/namei.c:4579
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff5c3f6cb97
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 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:00007fffcb0c1a68 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff5c3f6cb97
RDX: 00007fffcb0c1a90 RSI: 00007fffcb0c1b20 RDI: 00007fffcb0c1b20
RBP: 00007fffcb0c1b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007fffcb0c2c10
R13: 0000555570cf2700 R14: 0000000000000001 R15: 431bde82d7b634db
 </TASK>