UDF-fs: warning (device loop5): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 2048 failed
UDF-fs: warning (device loop5): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 4096 failed
==================================================================
BUG: KASAN: use-after-free in tcp_orphan_retries net/ipv4/tcp_timer.c:127 [inline]
BUG: KASAN: use-after-free in tcp_probe_timer net/ipv4/tcp_timer.c:369 [inline]
BUG: KASAN: use-after-free in tcp_write_timer_handler+0xa4b/0xa60 net/ipv4/tcp_timer.c:597
Read of size 4 at addr ffff88809814d128 by task syz-fuzzer/8088

CPU: 1 PID: 8088 Comm: syz-fuzzer Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load4_noabort+0x88/0x90 mm/kasan/report.c:432
 tcp_orphan_retries net/ipv4/tcp_timer.c:127 [inline]
 tcp_probe_timer net/ipv4/tcp_timer.c:369 [inline]
 tcp_write_timer_handler+0xa4b/0xa60 net/ipv4/tcp_timer.c:597
 tcp_write_timer+0x103/0x1b0 net/ipv4/tcp_timer.c:613
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0033:0x420db5
Code: 0f b6 3b 49 89 cb 89 f1 41 89 fc d3 ef 49 83 fb 08 74 0a 0f ba e7 04 0f 83 c2 00 00 00 41 0f a3 cc 73 b5 4b 8d 3c 0b 48 8b 3f <48> 85 ff 74 a9 49 89 fc 4c 29 cf 48 39 d7 72 9e 48 89 5c 24 78 4c
RSP: 002b:000000c0000b1ea8 EFLAGS: 00000203 ORIG_RAX: ffffffffffffff13
RAX: 0000000000203001 RBX: 00007f547bacf50e RCX: 0000000000000003
RDX: 0000000000000030 RSI: 0000000000000003 RDI: 0000000000000000
RBP: 000000c0000b1f28 R08: 00007f547bb80fff R09: 000000c0069ca1b0
R10: 000000c00001fe98 R11: 0000000000000028 R12: 00000000000000f8
R13: 000000000000005a R14: 0000000000000059 R15: 0000000000000200

Allocated by task 4695:
 kmem_cache_alloc+0x122/0x370 mm/slab.c:3559
 getname_flags+0xce/0x590 fs/namei.c:140
 user_path_at_empty+0x2a/0x50 fs/namei.c:2609
 user_path_at include/linux/namei.h:57 [inline]
 vfs_statx+0x113/0x210 fs/stat.c:185
 vfs_lstat include/linux/fs.h:3137 [inline]
 __do_sys_newlstat fs/stat.c:350 [inline]
 __se_sys_newlstat+0x96/0x120 fs/stat.c:344
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 4695:
 __cache_free mm/slab.c:3503 [inline]
 kmem_cache_free+0x7f/0x260 mm/slab.c:3765
 putname+0xe1/0x120 fs/namei.c:261
 filename_lookup+0x3d0/0x5a0 fs/namei.c:2358
 user_path_at include/linux/namei.h:57 [inline]
 vfs_statx+0x113/0x210 fs/stat.c:185
 vfs_lstat include/linux/fs.h:3137 [inline]
 __do_sys_newlstat fs/stat.c:350 [inline]
 __se_sys_newlstat+0x96/0x120 fs/stat.c:344
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff88809814c2c0
 which belongs to the cache names_cache of size 4096
The buggy address is located 3688 bytes inside of
 4096-byte region [ffff88809814c2c0, ffff88809814d2c0)
The buggy address belongs to the page:
page:ffffea0002605300 count:1 mapcount:0 mapping:ffff88823b843380 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffffea0002aea188 ffffea0002605388 ffff88823b843380
raw: 0000000000000000 ffff88809814c2c0 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88809814d000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88809814d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88809814d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff88809814d180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88809814d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 8088 Comm: syz-fuzzer Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 add_chain_cache kernel/locking/lockdep.c:2259 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:2371 [inline]
 validate_chain kernel/locking/lockdep.c:2391 [inline]
 __lock_acquire.cold+0x420/0x57e kernel/locking/lockdep.c:3416
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 console_lock_spinning_enable kernel/printk/printk.c:1622 [inline]
 console_unlock+0x3d4/0x1110 kernel/printk/printk.c:2457
 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965
 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405
 printk+0xba/0xed kernel/printk/printk.c:2040
 kasan_start_report mm/kasan/report.c:171 [inline]
 kasan_report_error+0x39/0xa0 mm/kasan/report.c:346
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load4_noabort+0x88/0x90 mm/kasan/report.c:432
 tcp_orphan_retries net/ipv4/tcp_timer.c:127 [inline]
 tcp_probe_timer net/ipv4/tcp_timer.c:369 [inline]
 tcp_write_timer_handler+0xa4b/0xa60 net/ipv4/tcp_timer.c:597
 tcp_write_timer+0x103/0x1b0 net/ipv4/tcp_timer.c:613
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
 __run_timers kernel/time/timer.c:1696 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
 __do_softirq+0x265/0x980 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0033:0x420db5
Code: 0f b6 3b 49 89 cb 89 f1 41 89 fc d3 ef 49 83 fb 08 74 0a 0f ba e7 04 0f 83 c2 00 00 00 41 0f a3 cc 73 b5 4b 8d 3c 0b 48 8b 3f <48> 85 ff 74 a9 49 89 fc 4c 29 cf 48 39 d7 72 9e 48 89 5c 24 78 4c
RSP: 002b:000000c0000b1ea8 EFLAGS: 00000203 ORIG_RAX: ffffffffffffff13
RAX: 0000000000203001 RBX: 00007f547bacf50e RCX: 0000000000000003
RDX: 0000000000000030 RSI: 0000000000000003 RDI: 0000000000000000
RBP: 000000c0000b1f28 R08: 00007f547bb80fff R09: 000000c0069ca1b0
R10: 000000c00001fe98 R11: 0000000000000028 R12: 00000000000000f8
R13: 000000000000005a R14: 0000000000000059 R15: 0000000000000200