Extracting prog: 1m18.534973773s Minimizing prog: 9m46.719490801s Simplifying prog options: 7m49.625932976s Extracting C: 2m6.049210856s Simplifying C: 0s extracting reproducer from 45 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-bpf$ENABLE_STATS-syz_mount_image$ext4 detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x1, '\x00', 0x0, 0x2}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f00000015c0)='ext4_free_inode\x00', r0}, 0x18) bpf$ENABLE_STATS(0x20, 0x0, 0x0) syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$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") program crashed: possible deadlock in ext4_writepages single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program testing program (duration=52.675640607s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-bpf$ENABLE_STATS detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x1, '\x00', 0x0, 0x2}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f00000015c0)='ext4_free_inode\x00', r0}, 0x18) bpf$ENABLE_STATS(0x20, 0x0, 0x0) program did not crash testing program (duration=52.675640607s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-syz_mount_image$ext4 detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x1, '\x00', 0x0, 0x2}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f00000015c0)='ext4_free_inode\x00', r0}, 0x18) syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$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") program crashed: possible deadlock in ext4_writepages testing program (duration=52.675640607s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-syz_mount_image$ext4 detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x1, '\x00', 0x0, 0x2}, 0x94) syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$eJzs281rHOUfAPDvTF7a/vqS/Gp9aa0aLUJQTJq0ag9eFAWRioIe6jEm2xK6baSJ0tZiUxFPghT0LB5F/wJvIoh6Erx68iSFor209RSZ2Zl0s81LazaZmP18YLLPMzO78/1m5pl59nmSADrWQPYjidgREb9FRF+junCHgcbLjWsXxm9euzCexNzcG38m+X7Xr10YL3ct37e9qAymEelHSXGQhabPnT85Vq/XzhT14ZlT7wxPnzv/1Hunxk7UTtROjx45cvjQyLPPjD7dljyzvK7v+2Bq/96X37r86vixy2//9E0W745ie3Me7TKQJf7XXK512+PtPljFdjaVk+4KA+GudEVEdrp68vbfF11x6+T1xUsfVhocsKayZ9OWpTfPzgGbWBJVRwBUo3zQZ99/y2Wduh4bwtXnG1+AsrxvFEtjS3ekxT49Ld9v22kgIo7N/v1FtsQajUMAADT7ZPzzo70R8f7Nr1/J+h5981vSuC9//T3/uauYQ+mPiP9HxO6IuCci9kTEvRH5vvdHxAOrjOf2/k96ZZUfuays//dcMbe1sP9X9v6iv6uo7czz70mOT9ZrB4vfyWD0bMnqI8sc47sXf/10qW3N/b9syY5f9gWLOK50twzQTYzNjOWd0ja4eiliX/di+SfzMwFJROyNiH1399G7ysLkE1/tX2qnlfNfRhvmmea+zNKbzfKfjZb8S0nz/OTkbfOTw1ujXjs4XF4Vt/v5l49fX+r4q8q/Da7WGq9N579paz472p80z9dOt/f4//L6T3uTN/N55t5i3dmxmZkzIxG9ydG8vmD96K33lvWzWaMeaVz/gwcWb/+7i/dk+T8YEdlF/FBEPBwRjxSxPxoRj0XEgWVy/PGFlfOPtKLzfyliYtH73/z133L+777QdfKHb5c6/p2d/8N5abBYk9//VrBYONntojXA1fzuAAAA4L8izUd5knRovpymQ0ONv+HfE/9L61PTM08en3r39ERjNKg/etJypKuvGA+tT9ZrI8ls8YmN8dHRYqy4HC89VIwbf9a1La8PjU/VJyrOHTrd9iXaf+aPrqqjA9bYtkXXjvaueyBABVrn0dOF1YuvhZsBbFb+Xxs61wrtP12vOID15/kPnWux9n+xpW4uADYnz3/oXNo/dKj0+6ojACrk+Q8daTX/17+Gha0bI4xqChv1pOSFiLKQboh4NmFhW0Tcwc49axtG1XcmAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACA9vgnAAD//7Ai4qc=") program crashed: possible deadlock in ext4_writepages testing program (duration=52.675640607s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$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") program crashed: possible deadlock in ext4_writepages extracting C reproducer testing compiled C program (duration=52.675640607s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$ext4 program crashed: WARNING in ext4_xattr_inode_update_ref a never seen crash title: WARNING in ext4_xattr_inode_update_ref, ignore simplifying guilty program options testing program (duration=52.675640607s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$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") program crashed: possible deadlock in ext4_writepages extracting C reproducer testing compiled C program (duration=52.675640607s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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$ext4 program crashed: WARNING in ext4_xattr_inode_update_ref a never seen crash title: WARNING in ext4_xattr_inode_update_ref, ignore testing program (duration=52.675640607s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$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") program crashed: possible deadlock in ext4_writepages extracting C reproducer testing compiled C program (duration=52.675640607s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 program crashed: WARNING in ext4_xattr_inode_update_ref a never seen crash title: WARNING in ext4_xattr_inode_update_ref, ignore testing program (duration=52.675640607s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$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") program crashed: possible deadlock in ext4_writepages validation run: crashed=true testing program (duration=52.675640607s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$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") program crashed: possible deadlock in ext4_writepages validation run: crashed=true testing program (duration=52.675640607s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file0\x00', 0x1800700, &(0x7f00000004c0)={[{@nodioread_nolock}, {@journal_dev={'journal_dev', 0x3d, 0xff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5c}}, {@min_batch_time={'min_batch_time', 0x3d, 0x5}}, {@resgid}, {@barrier}, {@nombcache}]}, 0x0, 0x47c, &(0x7f0000001040)="$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") program crashed: possible deadlock in ext4_writepages validation run: crashed=true reproducing took 27m22.35303715s repro crashed as (corrupted=false): syz.0.17[5934]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set loop0: detected capacity change from 0 to 512 ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.17/5934 is trying to acquire lock: ffff888023c3ebd8 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1767 [inline] ffff888023c3ebd8 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x170/0x2f0 fs/ext4/inode.c:2806 but task is already holding lock: ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6007 [inline] ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x3dc/0x6e0 fs/ext4/inode.c:6088 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ei->xattr_sem){++++}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ext4_setattr+0x86b/0x1c90 fs/ext4/inode.c:5490 notify_change+0xb0d/0xe10 fs/attr.c:499 chown_common+0x3f9/0x5a0 fs/open.c:783 do_fchownat+0x168/0x270 fs/open.c:814 __do_sys_chown fs/open.c:834 [inline] __se_sys_chown fs/open.c:832 [inline] __x64_sys_chown+0x82/0x90 fs/open.c:832 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1e9d/0x20c0 fs/jbd2/transaction.c:448 jbd2__journal_start+0x2bb/0x5b0 fs/jbd2/transaction.c:505 __ext4_journal_start_sb+0x203/0x570 fs/ext4/ext4_jbd2.c:112 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline] ext4_do_writepages+0xf92/0x38d0 fs/ext4/inode.c:2701 ext4_writepages+0x1a8/0x2f0 fs/ext4/inode.c:2807 do_writepages+0x3a2/0x600 mm/page-writeback.c:2575 filemap_fdatawrite_wbc+0x122/0x180 mm/filemap.c:390 __filemap_fdatawrite_range mm/filemap.c:423 [inline] file_write_and_wait_range+0x171/0x240 mm/filemap.c:781 ext4_sync_file+0x281/0xc10 fs/ext4/fsync.c:158 vfs_fsync_range fs/sync.c:188 [inline] vfs_fsync fs/sync.c:202 [inline] do_fsync fs/sync.c:212 [inline] __do_sys_fsync fs/sync.c:220 [inline] __se_sys_fsync fs/sync.c:218 [inline] __x64_sys_fsync+0x195/0x1d0 fs/sync.c:218 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&sbi->s_writepages_rwsem){++++}-{0:0}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 percpu_down_read+0x44/0x1a0 include/linux/percpu-rwsem.h:51 ext4_writepages_down_read fs/ext4/ext4.h:1767 [inline] ext4_writepages+0x170/0x2f0 fs/ext4/inode.c:2806 do_writepages+0x3a2/0x600 mm/page-writeback.c:2575 __writeback_single_inode+0x153/0xee0 fs/fs-writeback.c:1635 writeback_single_inode+0x211/0x720 fs/fs-writeback.c:1756 write_inode_now+0x161/0x1e0 fs/fs-writeback.c:2802 iput_final fs/inode.c:1807 [inline] iput+0x5b2/0x920 fs/inode.c:1846 ext4_xattr_block_set+0x273a/0x32a0 fs/ext4/xattr.c:2211 ext4_xattr_move_to_block fs/ext4/xattr.c:2679 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2754 [inline] ext4_expand_extra_isize_ea+0x10ea/0x19e0 fs/ext4/xattr.c:2846 __ext4_expand_extra_isize+0x306/0x400 fs/ext4/inode.c:5967 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6010 [inline] __ext4_mark_inode_dirty+0x45d/0x6e0 fs/ext4/inode.c:6088 ext4_evict_inode+0x7ed/0xea0 fs/ext4/inode.c:252 evict+0x486/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd4/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5601 [inline] ext4_fill_super+0x5de4/0x66c0 fs/ext4/super.c:5724 get_tree_bdev+0x3e4/0x510 fs/super.c:1591 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &sbi->s_writepages_rwsem --> jbd2_handle --> &ei->xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->xattr_sem); lock(jbd2_handle); lock(&ei->xattr_sem); rlock(&sbi->s_writepages_rwsem); *** DEADLOCK *** 3 locks held by syz.0.17/5934: #0: ffff888023c3c0e0 (&type->s_umount_key#31){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff888023c3c0e0 (&type->s_umount_key#31){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888023c3c0e0 (&type->s_umount_key#31){++++}-{3:3}, at: get_tree_bdev+0x344/0x510 fs/super.c:1589 #1: ffff888023c3c608 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1633 [inline] #1: ffff888023c3c608 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1755 [inline] #1: ffff888023c3c608 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x2b9/0xea0 fs/ext4/inode.c:213 #2: ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #2: ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6007 [inline] #2: ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x3dc/0x6e0 fs/ext4/inode.c:6088 stack backtrace: CPU: 0 PID: 5934 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 check_noncircular+0x2bd/0x3c0 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 percpu_down_read+0x44/0x1a0 include/linux/percpu-rwsem.h:51 ext4_writepages_down_read fs/ext4/ext4.h:1767 [inline] ext4_writepages+0x170/0x2f0 fs/ext4/inode.c:2806 do_writepages+0x3a2/0x600 mm/page-writeback.c:2575 __writeback_single_inode+0x153/0xee0 fs/fs-writeback.c:1635 writeback_single_inode+0x211/0x720 fs/fs-writeback.c:1756 write_inode_now+0x161/0x1e0 fs/fs-writeback.c:2802 iput_final fs/inode.c:1807 [inline] iput+0x5b2/0x920 fs/inode.c:1846 ext4_xattr_block_set+0x273a/0x32a0 fs/ext4/xattr.c:2211 ext4_xattr_move_to_block fs/ext4/xattr.c:2679 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2754 [inline] ext4_expand_extra_isize_ea+0x10ea/0x19e0 fs/ext4/xattr.c:2846 __ext4_expand_extra_isize+0x306/0x400 fs/ext4/inode.c:5967 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6010 [inline] __ext4_mark_inode_dirty+0x45d/0x6e0 fs/ext4/inode.c:6088 ext4_evict_inode+0x7ed/0xea0 fs/ext4/inode.c:252 evict+0x486/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd4/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5601 [inline] ext4_fill_super+0x5de4/0x66c0 fs/ext4/super.c:5724 get_tree_bdev+0x3e4/0x510 fs/super.c:1591 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0a2af90eea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffce424448 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fffce4244d0 RCX: 00007f0a2af90eea RDX: 0000200000000180 RSI: 00002000000001c0 RDI: 00007fffce424490 RBP: 0000200000000180 R08: 00007fffce4244d0 R09: 0000000001800700 R10: 0000000001800700 R11: 0000000000000246 R12: 00002000000001c0 R13: 00007fffce424490 R14: 000000000000047c R15: 00002000000004c0 ------------[ cut here ]------------ EA inode 11 i_nlink=2 WARNING: CPU: 0 PID: 5934 at fs/ext4/xattr.c:1075 ext4_xattr_inode_update_ref+0x4fb/0x550 fs/ext4/xattr.c:1073 Modules linked in: CPU: 0 PID: 5934 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:ext4_xattr_inode_update_ref+0x4fb/0x550 fs/ext4/xattr.c:1073 Code: 8d 7e 50 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 06 2c 9a ff 49 8b 37 48 c7 c7 a0 c6 be 8a 89 da e8 35 3a 0d ff <0f> 0b 4c 8b 74 24 08 4c 8b 7c 24 10 e9 b9 fe ff ff e8 7f a3 24 08 RSP: 0018:ffffc900033771c0 EFLAGS: 00010246 RAX: fc7645e26ad30800 RBX: 0000000000000002 RCX: ffff8880288b1e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffc900033772b8 R08: ffff8880b8e28c13 R09: 1ffff110171c5182 R10: dffffc0000000000 R11: ffffed10171c5183 R12: dffffc0000000000 R13: ffff888072b540a8 R14: ffff888072b53eb0 R15: ffff888072b53f00 FS: 0000555567b04500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a502211050 CR3: 000000007726e000 CR4: 00000000003506f0 Call Trace: ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1098 [inline] ext4_xattr_set_entry+0xcda/0x1e90 fs/ext4/xattr.c:1736 ext4_xattr_ibody_set+0x254/0x6a0 fs/ext4/xattr.c:2283 ext4_xattr_move_to_block fs/ext4/xattr.c:2686 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2754 [inline] ext4_expand_extra_isize_ea+0x113a/0x19e0 fs/ext4/xattr.c:2846 __ext4_expand_extra_isize+0x306/0x400 fs/ext4/inode.c:5967 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6010 [inline] __ext4_mark_inode_dirty+0x45d/0x6e0 fs/ext4/inode.c:6088 ext4_evict_inode+0x7ed/0xea0 fs/ext4/inode.c:252 evict+0x486/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd4/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5601 [inline] ext4_fill_super+0x5de4/0x66c0 fs/ext4/super.c:5724 get_tree_bdev+0x3e4/0x510 fs/super.c:1591 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0a2af90eea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffce424448 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fffce4244d0 RCX: 00007f0a2af90eea RDX: 0000200000000180 RSI: 00002000000001c0 RDI: 00007fffce424490 RBP: 0000200000000180 R08: 00007fffce4244d0 R09: 0000000001800700 R10: 0000000001800700 R11: 0000000000000246 R12: 00002000000001c0 R13: 00007fffce424490 R14: 000000000000047c R15: 00002000000004c0 final repro crashed as (corrupted=false): syz.0.17[5934]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set loop0: detected capacity change from 0 to 512 ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.17/5934 is trying to acquire lock: ffff888023c3ebd8 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1767 [inline] ffff888023c3ebd8 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x170/0x2f0 fs/ext4/inode.c:2806 but task is already holding lock: ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6007 [inline] ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x3dc/0x6e0 fs/ext4/inode.c:6088 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ei->xattr_sem){++++}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ext4_setattr+0x86b/0x1c90 fs/ext4/inode.c:5490 notify_change+0xb0d/0xe10 fs/attr.c:499 chown_common+0x3f9/0x5a0 fs/open.c:783 do_fchownat+0x168/0x270 fs/open.c:814 __do_sys_chown fs/open.c:834 [inline] __se_sys_chown fs/open.c:832 [inline] __x64_sys_chown+0x82/0x90 fs/open.c:832 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1e9d/0x20c0 fs/jbd2/transaction.c:448 jbd2__journal_start+0x2bb/0x5b0 fs/jbd2/transaction.c:505 __ext4_journal_start_sb+0x203/0x570 fs/ext4/ext4_jbd2.c:112 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline] ext4_do_writepages+0xf92/0x38d0 fs/ext4/inode.c:2701 ext4_writepages+0x1a8/0x2f0 fs/ext4/inode.c:2807 do_writepages+0x3a2/0x600 mm/page-writeback.c:2575 filemap_fdatawrite_wbc+0x122/0x180 mm/filemap.c:390 __filemap_fdatawrite_range mm/filemap.c:423 [inline] file_write_and_wait_range+0x171/0x240 mm/filemap.c:781 ext4_sync_file+0x281/0xc10 fs/ext4/fsync.c:158 vfs_fsync_range fs/sync.c:188 [inline] vfs_fsync fs/sync.c:202 [inline] do_fsync fs/sync.c:212 [inline] __do_sys_fsync fs/sync.c:220 [inline] __se_sys_fsync fs/sync.c:218 [inline] __x64_sys_fsync+0x195/0x1d0 fs/sync.c:218 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&sbi->s_writepages_rwsem){++++}-{0:0}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 percpu_down_read+0x44/0x1a0 include/linux/percpu-rwsem.h:51 ext4_writepages_down_read fs/ext4/ext4.h:1767 [inline] ext4_writepages+0x170/0x2f0 fs/ext4/inode.c:2806 do_writepages+0x3a2/0x600 mm/page-writeback.c:2575 __writeback_single_inode+0x153/0xee0 fs/fs-writeback.c:1635 writeback_single_inode+0x211/0x720 fs/fs-writeback.c:1756 write_inode_now+0x161/0x1e0 fs/fs-writeback.c:2802 iput_final fs/inode.c:1807 [inline] iput+0x5b2/0x920 fs/inode.c:1846 ext4_xattr_block_set+0x273a/0x32a0 fs/ext4/xattr.c:2211 ext4_xattr_move_to_block fs/ext4/xattr.c:2679 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2754 [inline] ext4_expand_extra_isize_ea+0x10ea/0x19e0 fs/ext4/xattr.c:2846 __ext4_expand_extra_isize+0x306/0x400 fs/ext4/inode.c:5967 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6010 [inline] __ext4_mark_inode_dirty+0x45d/0x6e0 fs/ext4/inode.c:6088 ext4_evict_inode+0x7ed/0xea0 fs/ext4/inode.c:252 evict+0x486/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd4/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5601 [inline] ext4_fill_super+0x5de4/0x66c0 fs/ext4/super.c:5724 get_tree_bdev+0x3e4/0x510 fs/super.c:1591 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &sbi->s_writepages_rwsem --> jbd2_handle --> &ei->xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->xattr_sem); lock(jbd2_handle); lock(&ei->xattr_sem); rlock(&sbi->s_writepages_rwsem); *** DEADLOCK *** 3 locks held by syz.0.17/5934: #0: ffff888023c3c0e0 (&type->s_umount_key#31){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff888023c3c0e0 (&type->s_umount_key#31){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888023c3c0e0 (&type->s_umount_key#31){++++}-{3:3}, at: get_tree_bdev+0x344/0x510 fs/super.c:1589 #1: ffff888023c3c608 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1633 [inline] #1: ffff888023c3c608 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1755 [inline] #1: ffff888023c3c608 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x2b9/0xea0 fs/ext4/inode.c:213 #2: ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #2: ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6007 [inline] #2: ffff888072b51ec8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x3dc/0x6e0 fs/ext4/inode.c:6088 stack backtrace: CPU: 0 PID: 5934 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 check_noncircular+0x2bd/0x3c0 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 percpu_down_read+0x44/0x1a0 include/linux/percpu-rwsem.h:51 ext4_writepages_down_read fs/ext4/ext4.h:1767 [inline] ext4_writepages+0x170/0x2f0 fs/ext4/inode.c:2806 do_writepages+0x3a2/0x600 mm/page-writeback.c:2575 __writeback_single_inode+0x153/0xee0 fs/fs-writeback.c:1635 writeback_single_inode+0x211/0x720 fs/fs-writeback.c:1756 write_inode_now+0x161/0x1e0 fs/fs-writeback.c:2802 iput_final fs/inode.c:1807 [inline] iput+0x5b2/0x920 fs/inode.c:1846 ext4_xattr_block_set+0x273a/0x32a0 fs/ext4/xattr.c:2211 ext4_xattr_move_to_block fs/ext4/xattr.c:2679 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2754 [inline] ext4_expand_extra_isize_ea+0x10ea/0x19e0 fs/ext4/xattr.c:2846 __ext4_expand_extra_isize+0x306/0x400 fs/ext4/inode.c:5967 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6010 [inline] __ext4_mark_inode_dirty+0x45d/0x6e0 fs/ext4/inode.c:6088 ext4_evict_inode+0x7ed/0xea0 fs/ext4/inode.c:252 evict+0x486/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd4/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5601 [inline] ext4_fill_super+0x5de4/0x66c0 fs/ext4/super.c:5724 get_tree_bdev+0x3e4/0x510 fs/super.c:1591 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0a2af90eea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffce424448 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fffce4244d0 RCX: 00007f0a2af90eea RDX: 0000200000000180 RSI: 00002000000001c0 RDI: 00007fffce424490 RBP: 0000200000000180 R08: 00007fffce4244d0 R09: 0000000001800700 R10: 0000000001800700 R11: 0000000000000246 R12: 00002000000001c0 R13: 00007fffce424490 R14: 000000000000047c R15: 00002000000004c0 ------------[ cut here ]------------ EA inode 11 i_nlink=2 WARNING: CPU: 0 PID: 5934 at fs/ext4/xattr.c:1075 ext4_xattr_inode_update_ref+0x4fb/0x550 fs/ext4/xattr.c:1073 Modules linked in: CPU: 0 PID: 5934 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:ext4_xattr_inode_update_ref+0x4fb/0x550 fs/ext4/xattr.c:1073 Code: 8d 7e 50 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 06 2c 9a ff 49 8b 37 48 c7 c7 a0 c6 be 8a 89 da e8 35 3a 0d ff <0f> 0b 4c 8b 74 24 08 4c 8b 7c 24 10 e9 b9 fe ff ff e8 7f a3 24 08 RSP: 0018:ffffc900033771c0 EFLAGS: 00010246 RAX: fc7645e26ad30800 RBX: 0000000000000002 RCX: ffff8880288b1e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffc900033772b8 R08: ffff8880b8e28c13 R09: 1ffff110171c5182 R10: dffffc0000000000 R11: ffffed10171c5183 R12: dffffc0000000000 R13: ffff888072b540a8 R14: ffff888072b53eb0 R15: ffff888072b53f00 FS: 0000555567b04500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a502211050 CR3: 000000007726e000 CR4: 00000000003506f0 Call Trace: ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1098 [inline] ext4_xattr_set_entry+0xcda/0x1e90 fs/ext4/xattr.c:1736 ext4_xattr_ibody_set+0x254/0x6a0 fs/ext4/xattr.c:2283 ext4_xattr_move_to_block fs/ext4/xattr.c:2686 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2754 [inline] ext4_expand_extra_isize_ea+0x113a/0x19e0 fs/ext4/xattr.c:2846 __ext4_expand_extra_isize+0x306/0x400 fs/ext4/inode.c:5967 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6010 [inline] __ext4_mark_inode_dirty+0x45d/0x6e0 fs/ext4/inode.c:6088 ext4_evict_inode+0x7ed/0xea0 fs/ext4/inode.c:252 evict+0x486/0x870 fs/inode.c:705 ext4_orphan_cleanup+0xbd4/0x1400 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5601 [inline] ext4_fill_super+0x5de4/0x66c0 fs/ext4/super.c:5724 get_tree_bdev+0x3e4/0x510 fs/super.c:1591 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0a2af90eea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffce424448 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fffce4244d0 RCX: 00007f0a2af90eea RDX: 0000200000000180 RSI: 00002000000001c0 RDI: 00007fffce424490 RBP: 0000200000000180 R08: 00007fffce4244d0 R09: 0000000001800700 R10: 0000000001800700 R11: 0000000000000246 R12: 00002000000001c0 R13: 00007fffce424490 R14: 000000000000047c R15: 00002000000004c0