Extracting prog: 2m25.960396915s Minimizing prog: 75.85µs Simplifying prog options: 0s Extracting C: 2m36.767067126s Simplifying C: 7m59.051316374s 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000280), &(0x7f0000000100)='./file0\x00', 0x1210080, &(0x7f0000000400)={[{@uid}, {@creator={'creator', 0x3d, "888aaae6"}}, {@umask={'umask', 0x3d, 0x4}}, {@dir_umask={'dir_umask', 0x3d, 0x3edbe866}}, {@iocharset={'iocharset', 0x3d, 'iso8859-2'}}, {}, {@gid={'gid', 0x3d, 0xee01}}]}, 0x4, 0x33c, &(0x7f0000000680)="$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") program crashed: BUG: unable to handle kernel paging request in hfs_find_init single: successfully extracted reproducer found reproducer with 1 syscalls minimizing guilty program extracting C reproducer testing compiled C program (duration=1m15.832900509s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs program crashed: BUG: unable to handle kernel paging request in hfs_find_init simplifying C reproducer testing compiled C program (duration=1m15.832900509s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs program crashed: BUG: unable to handle kernel paging request in hfs_find_init testing compiled C program (duration=1m15.832900509s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs program crashed: BUG: unable to handle kernel paging request in hfs_find_init testing compiled C program (duration=1m15.832900509s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs program crashed: BUG: unable to handle kernel paging request in hfs_find_init testing compiled C program (duration=1m15.832900509s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs program crashed: BUG: unable to handle kernel paging request in hfs_find_init testing compiled C program (duration=1m15.832900509s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs program crashed: BUG: unable to handle kernel paging request in hfs_find_init testing compiled C program (duration=1m15.832900509s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs program crashed: BUG: unable to handle kernel paging request in hfs_find_init testing compiled C program (duration=1m15.832900509s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs program crashed: BUG: unable to handle kernel paging request in hfs_find_init testing program (duration=1m15.832900509s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000280), &(0x7f0000000100)='./file0\x00', 0x1210080, &(0x7f0000000400)={[{@uid}, {@creator={'creator', 0x3d, "888aaae6"}}, {@umask={'umask', 0x3d, 0x4}}, {@dir_umask={'dir_umask', 0x3d, 0x3edbe866}}, {@iocharset={'iocharset', 0x3d, 'iso8859-2'}}, {}, {@gid={'gid', 0x3d, 0xee01}}]}, 0x4, 0x33c, &(0x7f0000000680)="$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") program crashed: BUG: unable to handle kernel paging request in hfs_find_init validation run: crashed=true testing program (duration=1m15.832900509s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000280), &(0x7f0000000100)='./file0\x00', 0x1210080, &(0x7f0000000400)={[{@uid}, {@creator={'creator', 0x3d, "888aaae6"}}, {@umask={'umask', 0x3d, 0x4}}, {@dir_umask={'dir_umask', 0x3d, 0x3edbe866}}, {@iocharset={'iocharset', 0x3d, 'iso8859-2'}}, {}, {@gid={'gid', 0x3d, 0xee01}}]}, 0x4, 0x33c, &(0x7f0000000680)="$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") program crashed: BUG: unable to handle kernel paging request in hfs_find_init validation run: crashed=true testing program (duration=1m15.832900509s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000280), &(0x7f0000000100)='./file0\x00', 0x1210080, &(0x7f0000000400)={[{@uid}, {@creator={'creator', 0x3d, "888aaae6"}}, {@umask={'umask', 0x3d, 0x4}}, {@dir_umask={'dir_umask', 0x3d, 0x3edbe866}}, {@iocharset={'iocharset', 0x3d, 'iso8859-2'}}, {}, {@gid={'gid', 0x3d, 0xee01}}]}, 0x4, 0x33c, &(0x7f0000000680)="$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") program crashed: BUG: unable to handle kernel paging request in hfs_find_init validation run: crashed=true reproducing took 16m22.403375328s repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 64 Unable to handle kernel paging request at virtual address dfff800000000008 KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000008] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4496 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfs_find_init+0x70/0x1cc fs/hfs/bfind.c:21 lr : hfs_find_init+0x30/0x1cc fs/hfs/bfind.c:16 sp : ffff800020f67150 x29: ffff800020f67150 x28: 0000000000000004 x27: dfff800000000000 x26: ffff7000041ece40 x25: ffff0000d10c3028 x24: 0000000000000008 x23: 0000000000000040 x22: dfff800000000000 x21: ffff800020f67238 x20: ffff800020f67220 x19: 0000000000000000 x18: 1fffe00033e6df7e x17: ffff80001539d000 x16: ffff800011b9ccb8 x15: 000000000004ffff x14: 0000000000000007 x13: 1ffff000041ece44 x12: 0000000000000000 x11: ff00800008fb4e7c x10: 0000000000000000 x9 : ffff800008fb4e7c x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff80001869c870 x4 : 0000000000000000 x3 : 0000000000000030 x2 : 0000000000000008 x1 : ffff800020f67220 x0 : 0000000000000000 Call trace: hfs_find_init+0x70/0x1cc fs/hfs/bfind.c:21 hfs_ext_read_extent fs/hfs/extent.c:200 [inline] hfs_get_block+0x3f0/0xa14 fs/hfs/extent.c:366 block_read_full_folio+0x2e8/0x980 fs/buffer.c:2271 hfs_read_folio+0x28/0x38 fs/hfs/inode.c:39 filemap_read_folio+0x134/0x384 mm/filemap.c:2490 do_read_cache_folio+0x24c/0x534 mm/filemap.c:3659 do_read_cache_page mm/filemap.c:3701 [inline] read_cache_page+0x6c/0x184 mm/filemap.c:3710 read_mapping_page include/linux/pagemap.h:793 [inline] hfs_btree_open+0x408/0x1140 fs/hfs/btree.c:78 hfs_mdb_get+0xef8/0x1a68 fs/hfs/mdb.c:199 hfs_fill_super+0xc3c/0x11a0 fs/hfs/super.c:406 mount_bdev+0x264/0x35c fs/super.c:1443 hfs_mount+0x44/0x58 fs/hfs/super.c:458 legacy_get_tree+0xd8/0x174 fs/fs_context.c:632 vfs_get_tree+0x90/0x278 fs/super.c:1573 do_new_mount+0x228/0x804 fs/namespace.c:3078 path_mount+0x5ac/0xe6c fs/namespace.c:3408 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x4a0/0x5a0 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 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: 97e50004 91010277 f90002bf d343fef8 (38f66b08) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97e50004 bl 0xffffffffff940010 4: 91010277 add x23, x19, #0x40 8: f90002bf str xzr, [x21] c: d343fef8 lsr x24, x23, #3 * 10: 38f66b08 ldrsb w8, [x24, x22] <-- trapping instruction final repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 64 Unable to handle kernel paging request at virtual address dfff800000000008 KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000008] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4496 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfs_find_init+0x70/0x1cc fs/hfs/bfind.c:21 lr : hfs_find_init+0x30/0x1cc fs/hfs/bfind.c:16 sp : ffff800020f67150 x29: ffff800020f67150 x28: 0000000000000004 x27: dfff800000000000 x26: ffff7000041ece40 x25: ffff0000d10c3028 x24: 0000000000000008 x23: 0000000000000040 x22: dfff800000000000 x21: ffff800020f67238 x20: ffff800020f67220 x19: 0000000000000000 x18: 1fffe00033e6df7e x17: ffff80001539d000 x16: ffff800011b9ccb8 x15: 000000000004ffff x14: 0000000000000007 x13: 1ffff000041ece44 x12: 0000000000000000 x11: ff00800008fb4e7c x10: 0000000000000000 x9 : ffff800008fb4e7c x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff80001869c870 x4 : 0000000000000000 x3 : 0000000000000030 x2 : 0000000000000008 x1 : ffff800020f67220 x0 : 0000000000000000 Call trace: hfs_find_init+0x70/0x1cc fs/hfs/bfind.c:21 hfs_ext_read_extent fs/hfs/extent.c:200 [inline] hfs_get_block+0x3f0/0xa14 fs/hfs/extent.c:366 block_read_full_folio+0x2e8/0x980 fs/buffer.c:2271 hfs_read_folio+0x28/0x38 fs/hfs/inode.c:39 filemap_read_folio+0x134/0x384 mm/filemap.c:2490 do_read_cache_folio+0x24c/0x534 mm/filemap.c:3659 do_read_cache_page mm/filemap.c:3701 [inline] read_cache_page+0x6c/0x184 mm/filemap.c:3710 read_mapping_page include/linux/pagemap.h:793 [inline] hfs_btree_open+0x408/0x1140 fs/hfs/btree.c:78 hfs_mdb_get+0xef8/0x1a68 fs/hfs/mdb.c:199 hfs_fill_super+0xc3c/0x11a0 fs/hfs/super.c:406 mount_bdev+0x264/0x35c fs/super.c:1443 hfs_mount+0x44/0x58 fs/hfs/super.c:458 legacy_get_tree+0xd8/0x174 fs/fs_context.c:632 vfs_get_tree+0x90/0x278 fs/super.c:1573 do_new_mount+0x228/0x804 fs/namespace.c:3078 path_mount+0x5ac/0xe6c fs/namespace.c:3408 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x4a0/0x5a0 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 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: 97e50004 91010277 f90002bf d343fef8 (38f66b08) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97e50004 bl 0xffffffffff940010 4: 91010277 add x23, x19, #0x40 8: f90002bf str xzr, [x21] c: d343fef8 lsr x24, x23, #3 * 10: 38f66b08 ldrsb w8, [x24, x22] <-- trapping instruction