Extracting prog: 1m37.162164912s Minimizing prog: 2m51.482595512s Simplifying prog options: 3m59.69332679s Extracting C: 13.606691258s Simplifying C: 0s extracting reproducer from 30 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: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}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-syz_mount_image$ext4 detailed listing: executing program 0: r0 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xb, &(0x7f0000000180)=ANY=[@ANYBLOB="18000000000000000000000000000000180100002020702500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000000000000b703000000000000850000007000000095"], &(0x7f0000000040)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x2, '\x00', 0x0, @fallback, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000180)={&(0x7f0000000140)='kmem_cache_free\x00', r0}, 0x10) syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file1\x00', 0x800700, &(0x7f00000007c0)={[{@nodioread_nolock}, {@errors_remount}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5a}}, {@nouid32}, {@resgid}, {@acl}, {@init_itable_val={'init_itable', 0x3d, 0x3}}]}, 0x1, 0x46f, &(0x7f0000000bc0)="$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") program crashed: possible deadlock in ext4_writepages single: successfully extracted reproducer found reproducer with 3 syscalls minimizing guilty program testing program (duration=46.493048293s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xb, &(0x7f0000000180)=ANY=[@ANYBLOB="18000000000000000000000000000000180100002020702500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000000000000b703000000000000850000007000000095"], &(0x7f0000000040)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x2, '\x00', 0x0, @fallback, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000180)={&(0x7f0000000140)='kmem_cache_free\x00', r0}, 0x10) program did not crash testing program (duration=46.493048293s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-syz_mount_image$ext4 detailed listing: executing program 0: bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xb, &(0x7f0000000180)=ANY=[@ANYBLOB="18000000000000000000000000000000180100002020702500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000000000000b703000000000000850000007000000095"], &(0x7f0000000040)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x2, '\x00', 0x0, @fallback, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x9}, 0x94) syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file1\x00', 0x800700, &(0x7f00000007c0)={[{@nodioread_nolock}, {@errors_remount}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5a}}, {@nouid32}, {@resgid}, {@acl}, {@init_itable_val={'init_itable', 0x3d, 0x3}}]}, 0x1, 0x46f, &(0x7f0000000bc0)="$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") program crashed: possible deadlock in ext4_writepages testing program (duration=46.493048293s, {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$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file1\x00', 0x800700, &(0x7f00000007c0)={[{@nodioread_nolock}, {@errors_remount}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5a}}, {@nouid32}, {@resgid}, {@acl}, {@init_itable_val={'init_itable', 0x3d, 0x3}}]}, 0x1, 0x46f, &(0x7f0000000bc0)="$eJzs281rHOUfAPDvTF7a/vqS/Gp9aa0aLUJQTJq0ag9eFAWRioIe6jEm2xK6baSJYmuxqYgnQQp6Fo+if4E3EUQ9CV49eZJC0V7aeorM7Ey62WYTazaZ2P18YLPPM/PszvebeXv2eXYD6FpD2Z8kYkdE/BoRA43q0gZDjafrV89P3rh6fjKJhYXX/kjydteunp8sm5av215UhtOI9MOk2MhSs2fPnZyo12tnivro3Km3RmfPnnvinVMTJ2onaqfHjxw5fGjs6afGn+xInlle1/a9P7N/74tvXHp58tilN3/8Oot3R7G+OY9OGcoS/3Mh17ru0U5vrGI7m8pJb4WBcFt6IiLbXX35+T8QPXFz5w3ECx9UGhywrrJ705b2q+cXgDtYElVHAFSjvNFnn3/LxwZ1PTaFK882PgBleV8vHo01vZEWbfpaPt920lBEHJv/6/PsEes0DgEA0Ozjyc+O9kfEeze+einrewwsrknjnvz5t/zvrmIOZTAi/h8RuyPirojYExF3R+Rt742I+9YYz639n/TyGt9yRVn/75libmtp/6/s/cVgT1HbmefflxyfrtcOFv+T4ejbktXHVtjGt8//8km7dc39v+yRbb/sCxZxXO5tGaCbmpibyDulHXDlYsS+3uXyTxZnApKI2BsR+27vrXeVhenHvtzfrtHq+a+gA/NMC19k6c1n+c9HS/6lpHl+cvqW+cnRrVGvHRwtj4pb/fTzR6+22/6a8u+AK7XGc9P+b20ymDTP1852dvv/8vhP+5PX83nm/mLZuxNzc2fGIvqTo3l9yfLxm68t62X77PgfPrD8+b+7eE2W//0RkR3ED0TEgxHxUBH7wxHxSEQcWCHHH55bPf9IK9r/FyOmlr3+LR7/Lfv/9gs9J7//pt32/9n+P5yXhosl+fVvFcuFk10uWgNcy/8OAAAA/ivS/DvwSTqyWE7TkZHGd/j3xP/S+szs3OPHZ94+PdX4rvxg9KXlSNdAMR5an67XxpL54h0b46PjxVhxOV56qBg3/rRnW14fmZypT1WcO3S77W3O/8zvPVVHB6yzbcsuHe/f8ECACrTOo6dLqxdeCRcDuFP5vTZ0r1XO/3Sj4gA2nvs/dK/lzv8LLXVzAXBncv+H7uX8hy6Vfld1BECF3P+hK63ld/3rWNi6OcKoprBZd0peiCgL6aaIR2GdClVfmQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADrj7wAAAP//KFzmgQ==") program crashed: possible deadlock in ext4_writepages extracting C reproducer testing compiled C program (duration=46.493048293s, {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$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=46.493048293s, {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$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file1\x00', 0x800700, &(0x7f00000007c0)={[{@nodioread_nolock}, {@errors_remount}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5a}}, {@nouid32}, {@resgid}, {@acl}, {@init_itable_val={'init_itable', 0x3d, 0x3}}]}, 0x1, 0x46f, &(0x7f0000000bc0)="$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") program crashed: possible deadlock in ext4_writepages extracting C reproducer testing compiled C program (duration=46.493048293s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$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=46.493048293s, {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)='./file1\x00', 0x800700, &(0x7f00000007c0)={[{@nodioread_nolock}, {@errors_remount}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5a}}, {@nouid32}, {@resgid}, {@acl}, {@init_itable_val={'init_itable', 0x3d, 0x3}}]}, 0x1, 0x46f, &(0x7f0000000bc0)="$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") program crashed: possible deadlock in ext4_writepages extracting C reproducer testing compiled C program (duration=46.493048293s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$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=46.493048293s, {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)='./file1\x00', 0x800700, &(0x7f00000007c0)={[{@nodioread_nolock}, {@errors_remount}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5a}}, {@nouid32}, {@resgid}, {@acl}, {@init_itable_val={'init_itable', 0x3d, 0x3}}]}, 0x1, 0x46f, &(0x7f0000000bc0)="$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") program crashed: possible deadlock in ext4_writepages validation run: crashed=true testing program (duration=46.493048293s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000001c0)='./file1\x00', 0x800700, &(0x7f00000007c0)={[{@nodioread_nolock}, {@errors_remount}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5a}}, {@nouid32}, {@resgid}, {@acl}, {@init_itable_val={'init_itable', 0x3d, 0x3}}]}, 0x1, 0x46f, &(0x7f0000000bc0)="$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") program crashed: possible deadlock in ext4_writepages validation run: crashed=true testing program (duration=46.493048293s, {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)='./file1\x00', 0x800700, &(0x7f00000007c0)={[{@nodioread_nolock}, {@errors_remount}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x5a}}, {@nouid32}, {@resgid}, {@acl}, {@init_itable_val={'init_itable', 0x3d, 0x3}}]}, 0x1, 0x46f, &(0x7f0000000bc0)="$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") program crashed: possible deadlock in ext4_writepages validation run: crashed=true reproducing took 13m37.050068544s repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 512 ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.17/4464 is trying to acquire lock: ffff0000d031eb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x188/0x284c fs/ext4/inode.c:2715 but task is already holding lock: ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6020 [inline] ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x37c/0x790 fs/ext4/inode.c:6101 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ei->xattr_sem){++++}-{3:3}: down_read+0x64/0x304 kernel/locking/rwsem.c:1520 ext4_setattr+0x7c4/0x150c fs/ext4/inode.c:5515 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 do_fchownat+0x158/0x268 fs/open.c:767 __do_sys_fchownat fs/open.c:782 [inline] __se_sys_fchownat fs/open.c:779 [inline] __arm64_sys_fchownat+0xb8/0xd4 fs/open.c:779 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 -> #1 (jbd2_handle){++++}-{0:0}: start_this_handle+0xfe0/0x122c fs/jbd2/transaction.c:463 jbd2__journal_start+0x288/0x51c fs/jbd2/transaction.c:520 __ext4_journal_start_sb+0x2fc/0x674 fs/ext4/ext4_jbd2.c:105 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline] ext4_writepages+0xa28/0x284c fs/ext4/inode.c:2838 do_writepages+0x2c0/0x4fc mm/page-writeback.c:2491 __writeback_single_inode+0x164/0x157c fs/fs-writeback.c:1622 writeback_sb_inodes+0x824/0x1404 fs/fs-writeback.c:1913 __writeback_inodes_wb+0x110/0x394 fs/fs-writeback.c:1984 wb_writeback+0x414/0xfb0 fs/fs-writeback.c:2089 wb_check_background_flush fs/fs-writeback.c:2155 [inline] wb_do_writeback fs/fs-writeback.c:2243 [inline] wb_workfn+0xac0/0xd98 fs/fs-writeback.c:2270 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 -> #0 (&sbi->s_writepages_rwsem){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x293c/0x6544 kernel/locking/lockdep.c:5049 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662 percpu_down_read+0x70/0x2a8 include/linux/percpu-rwsem.h:51 ext4_writepages+0x188/0x284c fs/ext4/inode.c:2715 do_writepages+0x2c0/0x4fc mm/page-writeback.c:2491 __writeback_single_inode+0x164/0x157c fs/fs-writeback.c:1622 writeback_single_inode+0x1c0/0x720 fs/fs-writeback.c:1743 write_inode_now+0x144/0x1b0 fs/fs-writeback.c:2780 iput_final fs/inode.c:1821 [inline] iput+0x5cc/0x7f4 fs/inode.c:1860 ext4_xattr_block_set+0x17a4/0x2810 fs/ext4/xattr.c:2158 ext4_xattr_move_to_block fs/ext4/xattr.c:2626 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2701 [inline] ext4_expand_extra_isize_ea+0xcb8/0x15cc fs/ext4/xattr.c:2793 __ext4_expand_extra_isize+0x298/0x358 fs/ext4/inode.c:5980 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6023 [inline] __ext4_mark_inode_dirty+0x3e4/0x790 fs/ext4/inode.c:6101 ext4_evict_inode+0xb58/0x1270 fs/ext4/inode.c:279 evict+0x3c8/0x810 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x764/0x7f4 fs/inode.c:1860 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:356 ext4_orphan_cleanup+0x908/0x104c fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x6440/0x68a8 fs/ext4/super.c:5661 get_tree_bdev+0x358/0x544 fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5691 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5b4/0xe78 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+0x49c/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 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); lock(&sbi->s_writepages_rwsem); *** DEADLOCK *** 3 locks held by syz.0.17/4464: #0: ffff0000d031c0e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1a4/0x804 fs/super.c:228 #1: ffff0000d031c650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #1: ffff0000d031c650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #1: ffff0000d031c650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x3dc/0x1270 fs/ext4/inode.c:240 #2: ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #2: ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6020 [inline] #2: ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x37c/0x790 fs/ext4/inode.c:6101 stack backtrace: CPU: 1 PID: 4464 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2048 check_noncircular+0x240/0x2d4 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x293c/0x6544 kernel/locking/lockdep.c:5049 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662 percpu_down_read+0x70/0x2a8 include/linux/percpu-rwsem.h:51 ext4_writepages+0x188/0x284c fs/ext4/inode.c:2715 do_writepages+0x2c0/0x4fc mm/page-writeback.c:2491 __writeback_single_inode+0x164/0x157c fs/fs-writeback.c:1622 writeback_single_inode+0x1c0/0x720 fs/fs-writeback.c:1743 write_inode_now+0x144/0x1b0 fs/fs-writeback.c:2780 iput_final fs/inode.c:1821 [inline] iput+0x5cc/0x7f4 fs/inode.c:1860 ext4_xattr_block_set+0x17a4/0x2810 fs/ext4/xattr.c:2158 ext4_xattr_move_to_block fs/ext4/xattr.c:2626 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2701 [inline] ext4_expand_extra_isize_ea+0xcb8/0x15cc fs/ext4/xattr.c:2793 __ext4_expand_extra_isize+0x298/0x358 fs/ext4/inode.c:5980 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6023 [inline] __ext4_mark_inode_dirty+0x3e4/0x790 fs/ext4/inode.c:6101 ext4_evict_inode+0xb58/0x1270 fs/ext4/inode.c:279 evict+0x3c8/0x810 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x764/0x7f4 fs/inode.c:1860 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:356 ext4_orphan_cleanup+0x908/0x104c fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x6440/0x68a8 fs/ext4/super.c:5661 get_tree_bdev+0x358/0x544 fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5691 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5b4/0xe78 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+0x49c/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 ------------[ cut here ]------------ EA inode 11 i_nlink=2 WARNING: CPU: 1 PID: 4464 at fs/ext4/xattr.c:1022 ext4_xattr_inode_update_ref+0x42c/0x470 fs/ext4/xattr.c:1020 Modules linked in: CPU: 1 PID: 4464 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : ext4_xattr_inode_update_ref+0x42c/0x470 fs/ext4/xattr.c:1020 lr : ext4_xattr_inode_update_ref+0x42c/0x470 fs/ext4/xattr.c:1020 sp : ffff800021326e00 x29: ffff800021326ea0 x28: 0000000000000000 x27: dfff800000000000 x26: 1fffe0001cb38095 x25: ffff700004264dc4 x24: 0000000000000000 x23: ffff800017a8a000 x22: ffff0000e59c02f0 x21: 0000000000000002 x20: 0000000000000001 x19: ffff0000e59c02b0 x18: ffff800011abbcc0 x17: 0000000000000000 x16: ffff800008042d90 x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 x11: ff00800008191ca8 x10: 0000000000000000 x9 : 69612470b85c7600 x8 : 69612470b85c7600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021326898 x4 : ffff8000151a4920 x3 : ffff800008311fcc x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: ext4_xattr_inode_update_ref+0x42c/0x470 fs/ext4/xattr.c:1020 ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1045 [inline] ext4_xattr_set_entry+0x918/0x15ac fs/ext4/xattr.c:1683 ext4_xattr_ibody_set+0x204/0x600 fs/ext4/xattr.c:2230 ext4_xattr_move_to_block fs/ext4/xattr.c:2633 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2701 [inline] ext4_expand_extra_isize_ea+0xd00/0x15cc fs/ext4/xattr.c:2793 __ext4_expand_extra_isize+0x298/0x358 fs/ext4/inode.c:5980 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6023 [inline] __ext4_mark_inode_dirty+0x3e4/0x790 fs/ext4/inode.c:6101 ext4_evict_inode+0xb58/0x1270 fs/ext4/inode.c:279 evict+0x3c8/0x810 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x764/0x7f4 fs/inode.c:1860 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:356 ext4_orphan_cleanup+0x908/0x104c fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x6440/0x68a8 fs/ext4/super.c:5661 get_tree_bdev+0x358/0x544 fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5691 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5b4/0xe78 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+0x49c/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 irq event stamp: 4413 hardirqs last enabled at (4413): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (4413): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (4412): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (4412): [] _raw_spin_lock_irqsave+0xa4/0xb4 kernel/locking/spinlock.c:162 softirqs last enabled at (3522): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (3522): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (3465): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- EXT4-fs error (device loop0): ext4_xattr_inode_iget:404: inode #18: comm syz.0.17: iget: bad extra_isize 90 (inode size 256) EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs error (device loop0): ext4_xattr_inode_iget:409: comm syz.0.17: error while reading EA inode 18 err=-117 EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs error (device loop0): ext4_xattr_inode_iget:404: inode #18: comm syz.0.17: iget: bad extra_isize 90 (inode size 256) EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs error (device loop0): ext4_xattr_inode_iget:409: comm syz.0.17: error while reading EA inode 18 err=-117 EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs (loop0): 1 orphan inode deleted EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. final repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 512 ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.17/4464 is trying to acquire lock: ffff0000d031eb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x188/0x284c fs/ext4/inode.c:2715 but task is already holding lock: ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6020 [inline] ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x37c/0x790 fs/ext4/inode.c:6101 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ei->xattr_sem){++++}-{3:3}: down_read+0x64/0x304 kernel/locking/rwsem.c:1520 ext4_setattr+0x7c4/0x150c fs/ext4/inode.c:5515 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 do_fchownat+0x158/0x268 fs/open.c:767 __do_sys_fchownat fs/open.c:782 [inline] __se_sys_fchownat fs/open.c:779 [inline] __arm64_sys_fchownat+0xb8/0xd4 fs/open.c:779 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 -> #1 (jbd2_handle){++++}-{0:0}: start_this_handle+0xfe0/0x122c fs/jbd2/transaction.c:463 jbd2__journal_start+0x288/0x51c fs/jbd2/transaction.c:520 __ext4_journal_start_sb+0x2fc/0x674 fs/ext4/ext4_jbd2.c:105 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline] ext4_writepages+0xa28/0x284c fs/ext4/inode.c:2838 do_writepages+0x2c0/0x4fc mm/page-writeback.c:2491 __writeback_single_inode+0x164/0x157c fs/fs-writeback.c:1622 writeback_sb_inodes+0x824/0x1404 fs/fs-writeback.c:1913 __writeback_inodes_wb+0x110/0x394 fs/fs-writeback.c:1984 wb_writeback+0x414/0xfb0 fs/fs-writeback.c:2089 wb_check_background_flush fs/fs-writeback.c:2155 [inline] wb_do_writeback fs/fs-writeback.c:2243 [inline] wb_workfn+0xac0/0xd98 fs/fs-writeback.c:2270 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 -> #0 (&sbi->s_writepages_rwsem){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x293c/0x6544 kernel/locking/lockdep.c:5049 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662 percpu_down_read+0x70/0x2a8 include/linux/percpu-rwsem.h:51 ext4_writepages+0x188/0x284c fs/ext4/inode.c:2715 do_writepages+0x2c0/0x4fc mm/page-writeback.c:2491 __writeback_single_inode+0x164/0x157c fs/fs-writeback.c:1622 writeback_single_inode+0x1c0/0x720 fs/fs-writeback.c:1743 write_inode_now+0x144/0x1b0 fs/fs-writeback.c:2780 iput_final fs/inode.c:1821 [inline] iput+0x5cc/0x7f4 fs/inode.c:1860 ext4_xattr_block_set+0x17a4/0x2810 fs/ext4/xattr.c:2158 ext4_xattr_move_to_block fs/ext4/xattr.c:2626 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2701 [inline] ext4_expand_extra_isize_ea+0xcb8/0x15cc fs/ext4/xattr.c:2793 __ext4_expand_extra_isize+0x298/0x358 fs/ext4/inode.c:5980 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6023 [inline] __ext4_mark_inode_dirty+0x3e4/0x790 fs/ext4/inode.c:6101 ext4_evict_inode+0xb58/0x1270 fs/ext4/inode.c:279 evict+0x3c8/0x810 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x764/0x7f4 fs/inode.c:1860 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:356 ext4_orphan_cleanup+0x908/0x104c fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x6440/0x68a8 fs/ext4/super.c:5661 get_tree_bdev+0x358/0x544 fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5691 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5b4/0xe78 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+0x49c/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 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); lock(&sbi->s_writepages_rwsem); *** DEADLOCK *** 3 locks held by syz.0.17/4464: #0: ffff0000d031c0e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1a4/0x804 fs/super.c:228 #1: ffff0000d031c650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1891 [inline] #1: ffff0000d031c650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:2013 [inline] #1: ffff0000d031c650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x3dc/0x1270 fs/ext4/inode.c:240 #2: ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #2: ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6020 [inline] #2: ffff0000e5985b10 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x37c/0x790 fs/ext4/inode.c:6101 stack backtrace: CPU: 1 PID: 4464 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2048 check_noncircular+0x240/0x2d4 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x293c/0x6544 kernel/locking/lockdep.c:5049 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662 percpu_down_read+0x70/0x2a8 include/linux/percpu-rwsem.h:51 ext4_writepages+0x188/0x284c fs/ext4/inode.c:2715 do_writepages+0x2c0/0x4fc mm/page-writeback.c:2491 __writeback_single_inode+0x164/0x157c fs/fs-writeback.c:1622 writeback_single_inode+0x1c0/0x720 fs/fs-writeback.c:1743 write_inode_now+0x144/0x1b0 fs/fs-writeback.c:2780 iput_final fs/inode.c:1821 [inline] iput+0x5cc/0x7f4 fs/inode.c:1860 ext4_xattr_block_set+0x17a4/0x2810 fs/ext4/xattr.c:2158 ext4_xattr_move_to_block fs/ext4/xattr.c:2626 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2701 [inline] ext4_expand_extra_isize_ea+0xcb8/0x15cc fs/ext4/xattr.c:2793 __ext4_expand_extra_isize+0x298/0x358 fs/ext4/inode.c:5980 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6023 [inline] __ext4_mark_inode_dirty+0x3e4/0x790 fs/ext4/inode.c:6101 ext4_evict_inode+0xb58/0x1270 fs/ext4/inode.c:279 evict+0x3c8/0x810 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x764/0x7f4 fs/inode.c:1860 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:356 ext4_orphan_cleanup+0x908/0x104c fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x6440/0x68a8 fs/ext4/super.c:5661 get_tree_bdev+0x358/0x544 fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5691 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5b4/0xe78 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+0x49c/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 ------------[ cut here ]------------ EA inode 11 i_nlink=2 WARNING: CPU: 1 PID: 4464 at fs/ext4/xattr.c:1022 ext4_xattr_inode_update_ref+0x42c/0x470 fs/ext4/xattr.c:1020 Modules linked in: CPU: 1 PID: 4464 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : ext4_xattr_inode_update_ref+0x42c/0x470 fs/ext4/xattr.c:1020 lr : ext4_xattr_inode_update_ref+0x42c/0x470 fs/ext4/xattr.c:1020 sp : ffff800021326e00 x29: ffff800021326ea0 x28: 0000000000000000 x27: dfff800000000000 x26: 1fffe0001cb38095 x25: ffff700004264dc4 x24: 0000000000000000 x23: ffff800017a8a000 x22: ffff0000e59c02f0 x21: 0000000000000002 x20: 0000000000000001 x19: ffff0000e59c02b0 x18: ffff800011abbcc0 x17: 0000000000000000 x16: ffff800008042d90 x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 x11: ff00800008191ca8 x10: 0000000000000000 x9 : 69612470b85c7600 x8 : 69612470b85c7600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021326898 x4 : ffff8000151a4920 x3 : ffff800008311fcc x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: ext4_xattr_inode_update_ref+0x42c/0x470 fs/ext4/xattr.c:1020 ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1045 [inline] ext4_xattr_set_entry+0x918/0x15ac fs/ext4/xattr.c:1683 ext4_xattr_ibody_set+0x204/0x600 fs/ext4/xattr.c:2230 ext4_xattr_move_to_block fs/ext4/xattr.c:2633 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2701 [inline] ext4_expand_extra_isize_ea+0xd00/0x15cc fs/ext4/xattr.c:2793 __ext4_expand_extra_isize+0x298/0x358 fs/ext4/inode.c:5980 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6023 [inline] __ext4_mark_inode_dirty+0x3e4/0x790 fs/ext4/inode.c:6101 ext4_evict_inode+0xb58/0x1270 fs/ext4/inode.c:279 evict+0x3c8/0x810 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x764/0x7f4 fs/inode.c:1860 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:356 ext4_orphan_cleanup+0x908/0x104c fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5530 [inline] ext4_fill_super+0x6440/0x68a8 fs/ext4/super.c:5661 get_tree_bdev+0x358/0x544 fs/super.c:1366 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5691 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5b4/0xe78 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+0x49c/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 irq event stamp: 4413 hardirqs last enabled at (4413): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (4413): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (4412): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (4412): [] _raw_spin_lock_irqsave+0xa4/0xb4 kernel/locking/spinlock.c:162 softirqs last enabled at (3522): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (3522): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (3465): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- EXT4-fs error (device loop0): ext4_xattr_inode_iget:404: inode #18: comm syz.0.17: iget: bad extra_isize 90 (inode size 256) EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs error (device loop0): ext4_xattr_inode_iget:409: comm syz.0.17: error while reading EA inode 18 err=-117 EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs error (device loop0): ext4_xattr_inode_iget:404: inode #18: comm syz.0.17: iget: bad extra_isize 90 (inode size 256) EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs error (device loop0): ext4_xattr_inode_iget:409: comm syz.0.17: error while reading EA inode 18 err=-117 EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs (loop0): 1 orphan inode deleted EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none.