Extracting prog: 3m43.997549712s
Minimizing prog: 46.61µs
Simplifying prog options: 0s
Extracting C: 2m9.719335874s
Simplifying C: 11m30.574211327s
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$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f0000000140)='./file0\x00', 0x800718, &(0x7f00000003c0)={[{@delalloc}, {@journal_dev={'journal_dev', 0x3d, 0x40000ff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x60}}, {@nobh}, {@resgid}, {@resuid}, {@nombcache}, {@noblock_validity}, {@usrquota}, {@journal_ioprio={'journal_ioprio', 0x3d, 0x4}}]}, 0x2, 0x4a3, &(0x7f00000004c0)="$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")
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f0000000140)='./file0\x00', 0x800718, &(0x7f00000003c0)={[{@delalloc}, {@journal_dev={'journal_dev', 0x3d, 0x40000ff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x60}}, {@nobh}, {@resgid}, {@resuid}, {@nombcache}, {@noblock_validity}, {@usrquota}, {@journal_ioprio={'journal_ioprio', 0x3d, 0x4}}]}, 0x2, 0x4a3, &(0x7f00000004c0)="$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")
program crashed: WARNING in ext4_xattr_inode_update_ref
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
extracting C reproducer
testing compiled C program (duration=6m0s, {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$ext4
program crashed: WARNING in ext4_xattr_inode_update_ref
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: WARNING in ext4_xattr_inode_update_ref
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: WARNING in ext4_xattr_inode_update_ref
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: WARNING in ext4_xattr_inode_update_ref
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: WARNING in ext4_xattr_inode_update_ref
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: WARNING in ext4_xattr_inode_update_ref
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: WARNING in ext4_xattr_inode_update_ref
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
program crashed: WARNING in ext4_xattr_inode_update_ref
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false 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', &(0x7f0000000140)='./file0\x00', 0x800718, &(0x7f00000003c0)={[{@delalloc}, {@journal_dev={'journal_dev', 0x3d, 0x40000ff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x60}}, {@nobh}, {@resgid}, {@resuid}, {@nombcache}, {@noblock_validity}, {@usrquota}, {@journal_ioprio={'journal_ioprio', 0x3d, 0x4}}]}, 0x2, 0x4a3, &(0x7f00000004c0)="$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")
program crashed: WARNING in ext4_xattr_inode_update_ref
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f0000000140)='./file0\x00', 0x800718, &(0x7f00000003c0)={[{@delalloc}, {@journal_dev={'journal_dev', 0x3d, 0x40000ff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x60}}, {@nobh}, {@resgid}, {@resuid}, {@nombcache}, {@noblock_validity}, {@usrquota}, {@journal_ioprio={'journal_ioprio', 0x3d, 0x4}}]}, 0x2, 0x4a3, &(0x7f00000004c0)="$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")
program crashed: WARNING in ext4_xattr_inode_update_ref
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false 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', &(0x7f0000000140)='./file0\x00', 0x800718, &(0x7f00000003c0)={[{@delalloc}, {@journal_dev={'journal_dev', 0x3d, 0x40000ff}}, {@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x60}}, {@nobh}, {@resgid}, {@resuid}, {@nombcache}, {@noblock_validity}, {@usrquota}, {@journal_ioprio={'journal_ioprio', 0x3d, 0x4}}]}, 0x2, 0x4a3, &(0x7f00000004c0)="$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")
program crashed: possible deadlock in ext4_writepages
validation run: crashed=true
reproducing took 22m31.652974516s
repro crashed as (corrupted=false):
loop0: detected capacity change from 0 to 512
EXT4-fs: Ignoring removed nobh option
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/6028 is trying to acquire lock:
ffff888039f10c58 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: percpu_down_read include/linux/percpu-rwsem.h:77 [inline]
ffff888039f10c58 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1813 [inline]
ffff888039f10c58 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x205/0x3b0 fs/ext4/inode.c:3018
but task is already holding lock:
ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:164 [inline]
ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6337 [inline]
ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: __ext4_mark_inode_dirty+0x3db/0x730 fs/ext4/inode.c:6418
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&ei->xattr_sem){++++}-{4:4}:
down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
ext4_write_lock_xattr fs/ext4/xattr.h:157 [inline]
ext4_xattr_set_handle+0x19c/0x14c0 fs/ext4/xattr.c:2372
ext4_initxattrs+0x9f/0x110 fs/ext4/xattr_security.c:44
security_inode_init_security+0x296/0x3d0 security/security.c:1344
__ext4_new_inode+0x332f/0x3d20 fs/ext4/ialloc.c:1324
ext4_create+0x233/0x470 fs/ext4/namei.c:2820
lookup_open fs/namei.c:4483 [inline]
open_last_lookups fs/namei.c:4583 [inline]
path_openat+0x13b4/0x38a0 fs/namei.c:4827
do_file_open+0x23e/0x4a0 fs/namei.c:4859
do_sys_openat2+0x113/0x200 fs/open.c:1366
do_sys_open fs/open.c:1372 [inline]
__do_sys_openat fs/open.c:1388 [inline]
__se_sys_openat fs/open.c:1383 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1383
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (jbd2_handle){++++}-{0:0}:
wait_transaction_locked+0x1c2/0x280 fs/jbd2/transaction.c:151
add_transaction_credits fs/jbd2/transaction.c:222 [inline]
start_this_handle+0x7dc/0x2290 fs/jbd2/transaction.c:403
jbd2__journal_start+0x2c0/0x5b0 fs/jbd2/transaction.c:501
__ext4_journal_start_sb+0x203/0x620 fs/ext4/ext4_jbd2.c:114
__ext4_journal_start fs/ext4/ext4_jbd2.h:242 [inline]
ext4_do_writepages+0xf97/0x46e0 fs/ext4/inode.c:2907
ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3019
do_writepages+0x32e/0x550 mm/page-writeback.c:2554
__writeback_single_inode+0x133/0x11a0 fs/fs-writeback.c:1750
writeback_sb_inodes+0x995/0x19d0 fs/fs-writeback.c:2042
__writeback_inodes_wb+0x111/0x240 fs/fs-writeback.c:2118
wb_writeback+0x46a/0xb70 fs/fs-writeback.c:2229
wb_check_old_data_flush fs/fs-writeback.c:2333 [inline]
wb_do_writeback fs/fs-writeback.c:2386 [inline]
wb_workfn+0xb52/0xf60 fs/fs-writeback.c:2414
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #0 (&sbi->s_writepages_rwsem){++++}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868
percpu_down_read_internal+0x48/0x1d0 include/linux/percpu-rwsem.h:53
percpu_down_read include/linux/percpu-rwsem.h:77 [inline]
ext4_writepages_down_read fs/ext4/ext4.h:1813 [inline]
ext4_writepages+0x205/0x3b0 fs/ext4/inode.c:3018
do_writepages+0x32e/0x550 mm/page-writeback.c:2554
__writeback_single_inode+0x133/0x11a0 fs/fs-writeback.c:1750
writeback_single_inode+0x488/0xd60 fs/fs-writeback.c:1869
write_inode_now+0x1c2/0x290 fs/fs-writeback.c:2954
iput_final fs/inode.c:1956 [inline]
iput+0x8c1/0xe80 fs/inode.c:2015
ext4_xattr_block_set+0x1fd4/0x2ad0 fs/ext4/xattr.c:2204
ext4_xattr_move_to_block fs/ext4/xattr.c:2669 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2744 [inline]
ext4_expand_extra_isize_ea+0x12cf/0x1ea0 fs/ext4/xattr.c:2832
__ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6297
ext4_try_to_expand_extra_isize fs/ext4/inode.c:6340 [inline]
__ext4_mark_inode_dirty+0x45c/0x730 fs/ext4/inode.c:6418
ext4_evict_inode+0x7a1/0xeb0 fs/ext4/inode.c:255
evict+0x61e/0xb10 fs/inode.c:846
ext4_orphan_cleanup+0xc38/0x1470 fs/ext4/orphan.c:472
__ext4_fill_super fs/ext4/super.c:5668 [inline]
ext4_fill_super+0x5a0b/0x6320 fs/ext4/super.c:5791
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3763 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3839
do_mount fs/namespace.c:4172 [inline]
__do_sys_mount fs/namespace.c:4361 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4338
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
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.0.17/6028:
#0: ffff88803e8720d0 (&type->s_umount_key#29/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xac0 fs/super.c:345
#1: ffff88803e872770 (sb_internal){.+.+}-{0:0}, at: percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline]
#1: ffff88803e872770 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs/super.h:19 [inline]
#1: ffff88803e872770 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs/super.h:177 [inline]
#1: ffff88803e872770 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x274/0xeb0 fs/ext4/inode.c:216
#2: ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:164 [inline]
#2: ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6337 [inline]
#2: ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: __ext4_mark_inode_dirty+0x3db/0x730 fs/ext4/inode.c:6418
stack backtrace:
CPU: 0 UID: 0 PID: 6028 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043
check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868
percpu_down_read_internal+0x48/0x1d0 include/linux/percpu-rwsem.h:53
percpu_down_read include/linux/percpu-rwsem.h:77 [inline]
ext4_writepages_down_read fs/ext4/ext4.h:1813 [inline]
ext4_writepages+0x205/0x3b0 fs/ext4/inode.c:3018
do_writepages+0x32e/0x550 mm/page-writeback.c:2554
__writeback_single_inode+0x133/0x11a0 fs/fs-writeback.c:1750
writeback_single_inode+0x488/0xd60 fs/fs-writeback.c:1869
write_inode_now+0x1c2/0x290 fs/fs-writeback.c:2954
iput_final fs/inode.c:1956 [inline]
iput+0x8c1/0xe80 fs/inode.c:2015
ext4_xattr_block_set+0x1fd4/0x2ad0 fs/ext4/xattr.c:2204
ext4_xattr_move_to_block fs/ext4/xattr.c:2669 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2744 [inline]
ext4_expand_extra_isize_ea+0x12cf/0x1ea0 fs/ext4/xattr.c:2832
__ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6297
ext4_try_to_expand_extra_isize fs/ext4/inode.c:6340 [inline]
__ext4_mark_inode_dirty+0x45c/0x730 fs/ext4/inode.c:6418
ext4_evict_inode+0x7a1/0xeb0 fs/ext4/inode.c:255
evict+0x61e/0xb10 fs/inode.c:846
ext4_orphan_cleanup+0xc38/0x1470 fs/ext4/orphan.c:472
__ext4_fill_super fs/ext4/super.c:5668 [inline]
ext4_fill_super+0x5a0b/0x6320 fs/ext4/super.c:5791
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3763 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3839
do_mount fs/namespace.c:4172 [inline]
__do_sys_mount fs/namespace.c:4361 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4338
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f02108ada0a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe8f4ec078 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe8f4ec100 RCX: 00007f02108ada0a
RDX: 0000200000000180 RSI: 0000200000000140 RDI: 00007ffe8f4ec0c0
RBP: 0000200000000180 R08: 00007ffe8f4ec100 R09: 0000000000800718
R10: 0000000000800718 R11: 0000000000000246 R12: 0000200000000140
R13: 00007ffe8f4ec0c0 R14: 00000000000004a3 R15: 00002000000003c0
------------[ cut here ]------------
EA inode 11 i_nlink=1026
WARNING: fs/ext4/xattr.c:1059 at ext4_xattr_inode_update_ref+0x4c9/0x5a0 fs/ext4/xattr.c:1057, CPU#0: syz.0.17/6028
Modules linked in:
CPU: 0 UID: 0 PID: 6028 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:ext4_xattr_inode_update_ref+0x511/0x5a0 fs/ext4/xattr.c:1057
Code: 74 08 4c 89 ef e8 0f 54 9b ff 4d 8b 6d 00 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 06 84 c0 75 77 41 8b 17 4c 89 e7 4c 89 ee <67> 48 0f b9 3a 4c 8b 6c 24 28 e9 59 fe ff ff e8 bb f1 92 08 44 89
RSP: 0018:ffffc90003b2f100 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: dffffc0000000000
RDX: 0000000000000402 RSI: 000000000000000b RDI: ffffffff8f7074f0
RBP: ffffc90003b2f200 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10089c8228 R12: ffffffff8f7074f0
R13: 000000000000000b R14: 1ffff110089c81ec R15: ffff888044e40f60
FS: 00005555605a4500(0000) GS:ffff888126340000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ef4944000 CR3: 000000003f346000 CR4: 00000000003526f0
Call Trace:
ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1082 [inline]
ext4_xattr_set_entry+0xabb/0x1e20 fs/ext4/xattr.c:1724
ext4_xattr_ibody_set+0x254/0x6a0 fs/ext4/xattr.c:2273
ext4_xattr_move_to_block fs/ext4/xattr.c:2676 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2744 [inline]
ext4_expand_extra_isize_ea+0x13a2/0x1ea0 fs/ext4/xattr.c:2832
__ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6297
ext4_try_to_expand_extra_isize fs/ext4/inode.c:6340 [inline]
__ext4_mark_inode_dirty+0x45c/0x730 fs/ext4/inode.c:6418
ext4_evict_inode+0x7a1/0xeb0 fs/ext4/inode.c:255
evict+0x61e/0xb10 fs/inode.c:846
ext4_orphan_cleanup+0xc38/0x1470 fs/ext4/orphan.c:472
__ext4_fill_super fs/ext4/super.c:5668 [inline]
ext4_fill_super+0x5a0b/0x6320 fs/ext4/super.c:5791
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3763 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3839
do_mount fs/namespace.c:4172 [inline]
__do_sys_mount fs/namespace.c:4361 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4338
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f02108ada0a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe8f4ec078 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe8f4ec100 RCX: 00007f02108ada0a
RDX: 0000200000000180 RSI: 0000200000000140 RDI: 00007ffe8f4ec0c0
RBP: 0000200000000180 R08: 00007ffe8f4ec100 R09: 0000000000800718
R10: 0000000000800718 R11: 0000000000000246 R12: 0000200000000140
R13: 00007ffe8f4ec0c0 R14: 00000000000004a3 R15: 00002000000003c0
----------------
Code disassembly (best guess):
0: 74 08 je 0xa
2: 4c 89 ef mov %r13,%rdi
5: e8 0f 54 9b ff call 0xff9b5419
a: 4d 8b 6d 00 mov 0x0(%r13),%r13
e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
15: fc ff df
18: 41 0f b6 04 06 movzbl (%r14,%rax,1),%eax
1d: 84 c0 test %al,%al
1f: 75 77 jne 0x98
21: 41 8b 17 mov (%r15),%edx
24: 4c 89 e7 mov %r12,%rdi
27: 4c 89 ee mov %r13,%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 4c 8b 6c 24 28 mov 0x28(%rsp),%r13
34: e9 59 fe ff ff jmp 0xfffffe92
39: e8 bb f1 92 08 call 0x892f1f9
3e: 44 rex.R
3f: 89 .byte 0x89
final repro crashed as (corrupted=false):
loop0: detected capacity change from 0 to 512
EXT4-fs: Ignoring removed nobh option
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/6028 is trying to acquire lock:
ffff888039f10c58 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: percpu_down_read include/linux/percpu-rwsem.h:77 [inline]
ffff888039f10c58 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1813 [inline]
ffff888039f10c58 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x205/0x3b0 fs/ext4/inode.c:3018
but task is already holding lock:
ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:164 [inline]
ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6337 [inline]
ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: __ext4_mark_inode_dirty+0x3db/0x730 fs/ext4/inode.c:6418
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&ei->xattr_sem){++++}-{4:4}:
down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
ext4_write_lock_xattr fs/ext4/xattr.h:157 [inline]
ext4_xattr_set_handle+0x19c/0x14c0 fs/ext4/xattr.c:2372
ext4_initxattrs+0x9f/0x110 fs/ext4/xattr_security.c:44
security_inode_init_security+0x296/0x3d0 security/security.c:1344
__ext4_new_inode+0x332f/0x3d20 fs/ext4/ialloc.c:1324
ext4_create+0x233/0x470 fs/ext4/namei.c:2820
lookup_open fs/namei.c:4483 [inline]
open_last_lookups fs/namei.c:4583 [inline]
path_openat+0x13b4/0x38a0 fs/namei.c:4827
do_file_open+0x23e/0x4a0 fs/namei.c:4859
do_sys_openat2+0x113/0x200 fs/open.c:1366
do_sys_open fs/open.c:1372 [inline]
__do_sys_openat fs/open.c:1388 [inline]
__se_sys_openat fs/open.c:1383 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1383
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (jbd2_handle){++++}-{0:0}:
wait_transaction_locked+0x1c2/0x280 fs/jbd2/transaction.c:151
add_transaction_credits fs/jbd2/transaction.c:222 [inline]
start_this_handle+0x7dc/0x2290 fs/jbd2/transaction.c:403
jbd2__journal_start+0x2c0/0x5b0 fs/jbd2/transaction.c:501
__ext4_journal_start_sb+0x203/0x620 fs/ext4/ext4_jbd2.c:114
__ext4_journal_start fs/ext4/ext4_jbd2.h:242 [inline]
ext4_do_writepages+0xf97/0x46e0 fs/ext4/inode.c:2907
ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3019
do_writepages+0x32e/0x550 mm/page-writeback.c:2554
__writeback_single_inode+0x133/0x11a0 fs/fs-writeback.c:1750
writeback_sb_inodes+0x995/0x19d0 fs/fs-writeback.c:2042
__writeback_inodes_wb+0x111/0x240 fs/fs-writeback.c:2118
wb_writeback+0x46a/0xb70 fs/fs-writeback.c:2229
wb_check_old_data_flush fs/fs-writeback.c:2333 [inline]
wb_do_writeback fs/fs-writeback.c:2386 [inline]
wb_workfn+0xb52/0xf60 fs/fs-writeback.c:2414
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #0 (&sbi->s_writepages_rwsem){++++}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868
percpu_down_read_internal+0x48/0x1d0 include/linux/percpu-rwsem.h:53
percpu_down_read include/linux/percpu-rwsem.h:77 [inline]
ext4_writepages_down_read fs/ext4/ext4.h:1813 [inline]
ext4_writepages+0x205/0x3b0 fs/ext4/inode.c:3018
do_writepages+0x32e/0x550 mm/page-writeback.c:2554
__writeback_single_inode+0x133/0x11a0 fs/fs-writeback.c:1750
writeback_single_inode+0x488/0xd60 fs/fs-writeback.c:1869
write_inode_now+0x1c2/0x290 fs/fs-writeback.c:2954
iput_final fs/inode.c:1956 [inline]
iput+0x8c1/0xe80 fs/inode.c:2015
ext4_xattr_block_set+0x1fd4/0x2ad0 fs/ext4/xattr.c:2204
ext4_xattr_move_to_block fs/ext4/xattr.c:2669 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2744 [inline]
ext4_expand_extra_isize_ea+0x12cf/0x1ea0 fs/ext4/xattr.c:2832
__ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6297
ext4_try_to_expand_extra_isize fs/ext4/inode.c:6340 [inline]
__ext4_mark_inode_dirty+0x45c/0x730 fs/ext4/inode.c:6418
ext4_evict_inode+0x7a1/0xeb0 fs/ext4/inode.c:255
evict+0x61e/0xb10 fs/inode.c:846
ext4_orphan_cleanup+0xc38/0x1470 fs/ext4/orphan.c:472
__ext4_fill_super fs/ext4/super.c:5668 [inline]
ext4_fill_super+0x5a0b/0x6320 fs/ext4/super.c:5791
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3763 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3839
do_mount fs/namespace.c:4172 [inline]
__do_sys_mount fs/namespace.c:4361 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4338
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
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.0.17/6028:
#0: ffff88803e8720d0 (&type->s_umount_key#29/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xac0 fs/super.c:345
#1: ffff88803e872770 (sb_internal){.+.+}-{0:0}, at: percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline]
#1: ffff88803e872770 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs/super.h:19 [inline]
#1: ffff88803e872770 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs/super.h:177 [inline]
#1: ffff88803e872770 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x274/0xeb0 fs/ext4/inode.c:216
#2: ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:164 [inline]
#2: ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:6337 [inline]
#2: ffff888058603038 (&ei->xattr_sem){++++}-{4:4}, at: __ext4_mark_inode_dirty+0x3db/0x730 fs/ext4/inode.c:6418
stack backtrace:
CPU: 0 UID: 0 PID: 6028 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043
check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868
percpu_down_read_internal+0x48/0x1d0 include/linux/percpu-rwsem.h:53
percpu_down_read include/linux/percpu-rwsem.h:77 [inline]
ext4_writepages_down_read fs/ext4/ext4.h:1813 [inline]
ext4_writepages+0x205/0x3b0 fs/ext4/inode.c:3018
do_writepages+0x32e/0x550 mm/page-writeback.c:2554
__writeback_single_inode+0x133/0x11a0 fs/fs-writeback.c:1750
writeback_single_inode+0x488/0xd60 fs/fs-writeback.c:1869
write_inode_now+0x1c2/0x290 fs/fs-writeback.c:2954
iput_final fs/inode.c:1956 [inline]
iput+0x8c1/0xe80 fs/inode.c:2015
ext4_xattr_block_set+0x1fd4/0x2ad0 fs/ext4/xattr.c:2204
ext4_xattr_move_to_block fs/ext4/xattr.c:2669 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2744 [inline]
ext4_expand_extra_isize_ea+0x12cf/0x1ea0 fs/ext4/xattr.c:2832
__ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6297
ext4_try_to_expand_extra_isize fs/ext4/inode.c:6340 [inline]
__ext4_mark_inode_dirty+0x45c/0x730 fs/ext4/inode.c:6418
ext4_evict_inode+0x7a1/0xeb0 fs/ext4/inode.c:255
evict+0x61e/0xb10 fs/inode.c:846
ext4_orphan_cleanup+0xc38/0x1470 fs/ext4/orphan.c:472
__ext4_fill_super fs/ext4/super.c:5668 [inline]
ext4_fill_super+0x5a0b/0x6320 fs/ext4/super.c:5791
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3763 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3839
do_mount fs/namespace.c:4172 [inline]
__do_sys_mount fs/namespace.c:4361 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4338
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f02108ada0a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe8f4ec078 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe8f4ec100 RCX: 00007f02108ada0a
RDX: 0000200000000180 RSI: 0000200000000140 RDI: 00007ffe8f4ec0c0
RBP: 0000200000000180 R08: 00007ffe8f4ec100 R09: 0000000000800718
R10: 0000000000800718 R11: 0000000000000246 R12: 0000200000000140
R13: 00007ffe8f4ec0c0 R14: 00000000000004a3 R15: 00002000000003c0
------------[ cut here ]------------
EA inode 11 i_nlink=1026
WARNING: fs/ext4/xattr.c:1059 at ext4_xattr_inode_update_ref+0x4c9/0x5a0 fs/ext4/xattr.c:1057, CPU#0: syz.0.17/6028
Modules linked in:
CPU: 0 UID: 0 PID: 6028 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:ext4_xattr_inode_update_ref+0x511/0x5a0 fs/ext4/xattr.c:1057
Code: 74 08 4c 89 ef e8 0f 54 9b ff 4d 8b 6d 00 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 06 84 c0 75 77 41 8b 17 4c 89 e7 4c 89 ee <67> 48 0f b9 3a 4c 8b 6c 24 28 e9 59 fe ff ff e8 bb f1 92 08 44 89
RSP: 0018:ffffc90003b2f100 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: dffffc0000000000
RDX: 0000000000000402 RSI: 000000000000000b RDI: ffffffff8f7074f0
RBP: ffffc90003b2f200 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10089c8228 R12: ffffffff8f7074f0
R13: 000000000000000b R14: 1ffff110089c81ec R15: ffff888044e40f60
FS: 00005555605a4500(0000) GS:ffff888126340000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ef4944000 CR3: 000000003f346000 CR4: 00000000003526f0
Call Trace:
ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1082 [inline]
ext4_xattr_set_entry+0xabb/0x1e20 fs/ext4/xattr.c:1724
ext4_xattr_ibody_set+0x254/0x6a0 fs/ext4/xattr.c:2273
ext4_xattr_move_to_block fs/ext4/xattr.c:2676 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2744 [inline]
ext4_expand_extra_isize_ea+0x13a2/0x1ea0 fs/ext4/xattr.c:2832
__ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6297
ext4_try_to_expand_extra_isize fs/ext4/inode.c:6340 [inline]
__ext4_mark_inode_dirty+0x45c/0x730 fs/ext4/inode.c:6418
ext4_evict_inode+0x7a1/0xeb0 fs/ext4/inode.c:255
evict+0x61e/0xb10 fs/inode.c:846
ext4_orphan_cleanup+0xc38/0x1470 fs/ext4/orphan.c:472
__ext4_fill_super fs/ext4/super.c:5668 [inline]
ext4_fill_super+0x5a0b/0x6320 fs/ext4/super.c:5791
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3763 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3839
do_mount fs/namespace.c:4172 [inline]
__do_sys_mount fs/namespace.c:4361 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4338
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f02108ada0a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe8f4ec078 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe8f4ec100 RCX: 00007f02108ada0a
RDX: 0000200000000180 RSI: 0000200000000140 RDI: 00007ffe8f4ec0c0
RBP: 0000200000000180 R08: 00007ffe8f4ec100 R09: 0000000000800718
R10: 0000000000800718 R11: 0000000000000246 R12: 0000200000000140
R13: 00007ffe8f4ec0c0 R14: 00000000000004a3 R15: 00002000000003c0
----------------
Code disassembly (best guess):
0: 74 08 je 0xa
2: 4c 89 ef mov %r13,%rdi
5: e8 0f 54 9b ff call 0xff9b5419
a: 4d 8b 6d 00 mov 0x0(%r13),%r13
e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
15: fc ff df
18: 41 0f b6 04 06 movzbl (%r14,%rax,1),%eax
1d: 84 c0 test %al,%al
1f: 75 77 jne 0x98
21: 41 8b 17 mov (%r15),%edx
24: 4c 89 e7 mov %r12,%rdi
27: 4c 89 ee mov %r13,%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 4c 8b 6c 24 28 mov 0x28(%rsp),%r13
34: e9 59 fe ff ff jmp 0xfffffe92
39: e8 bb f1 92 08 call 0x892f1f9
3e: 44 rex.R
3f: 89 .byte 0x89