Warning: Permanently added '10.128.1.94' (ED25519) to the list of known hosts.
[*] Setting up reproducer...
[+] open img successful.
[+] ftruncate img successful.
[+] open dummy successful.
[+] ftruncate dummy successful.
[+] open /dev/loop-control successful.
[+] LOOP_CTL_GET_FREE successful, loop_num=0.
[+] open /dev/loop0 successful.
[   46.664933][   T29] kauditd_printk_skb: 11 callbacks suppressed
[   46.664953][   T29] audit: type=1400 audit(1790533664.636:183): avc:  denied  { read write } for  pid=3647 comm="syz-executor223" name="loop-control" dev="devtmpfs" ino=99 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1
[+] LOOP_SET_FD successful.
[*] Starting race threads...
[+] Threads started successfully.
[   46.665080][   T29] audit: type=1400 audit(1790533664.636:184): avc:  denied  { open } for  pid=3647 comm="syz-executor223" path="/dev/loop-control" dev="devtmpfs" ino=99 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1
[   46.665106][   T29] audit: type=1400 audit(1790533664.636:185): avc:  denied  { ioctl } for  pid=3647 comm="syz-executor223" path="/dev/loop-control" dev="devtmpfs" ino=99 ioctlcmd=0x4c82 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1
[   46.748470][ T3647] loop0: detected capacity change from 0 to 2048
[   49.652003][   T29] audit: type=1400 audit(1790533667.626:186): avc:  denied  { write } for  pid=3653 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   49.702618][   T29] audit: type=1400 audit(1790533667.676:187): avc:  denied  { write } for  pid=3664 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   50.189590][   T29] audit: type=1400 audit(1790533668.166:188): avc:  denied  { write } for  pid=3667 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   50.230877][   T29] audit: type=1400 audit(1790533668.206:189): avc:  denied  { write } for  pid=3678 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   50.738152][   T29] audit: type=1400 audit(1790533668.716:190): avc:  denied  { write } for  pid=3681 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   50.758604][   T29] audit: type=1400 audit(1790533668.726:191): avc:  denied  { write } for  pid=3692 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[   51.250543][ T3649] ==================================================================
[   51.250578][ T3649] BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping
[   51.250607][ T3649] 
[   51.250613][ T3649] write to 0xffffea000435cbd8 of 8 bytes by task 3648 on cpu 0:
[   51.250628][ T3649]  delete_from_page_cache_batch+0x310/0x720
[   51.250647][ T3649]  truncate_inode_pages_range+0x1f3/0x7d0
[   51.250675][ T3649]  truncate_inode_pages+0x24/0x30
[   51.250701][ T3649]  set_blocksize+0x1ed/0x270
[   51.250728][ T3649]  blkdev_bszset+0x121/0x160
[   51.250756][ T3649]  blkdev_ioctl+0x189/0x460
[   51.250784][ T3649]  __se_sys_ioctl+0xce/0x140
[   51.250811][ T3649]  __x64_sys_ioctl+0x43/0x50
[   51.250837][ T3649]  x64_sys_call+0x239d/0x2550
[   51.250860][ T3649]  do_syscall_64+0x112/0x360
[   51.250879][ T3649]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   51.250898][ T3649] 
[   51.250903][ T3649] read to 0xffffea000435cbd8 of 8 bytes by task 3649 on cpu 1:
[   51.250917][ T3649]  folio_mapping+0xa1/0xe0
[   51.250938][ T3649]  lru_add+0x80/0x420
[   51.250959][ T3649]  folio_batch_move_lru+0x2d6/0x3d0
[   51.250982][ T3649]  lru_add_drain_cpu+0x65/0x2a0
[   51.251004][ T3649]  lru_add_drain+0x26/0x70
[   51.251025][ T3649]  generic_fadvise+0x3e5/0x450
[   51.251047][ T3649]  __x64_sys_fadvise64+0xcb/0x110
[   51.251069][ T3649]  x64_sys_call+0x2392/0x2550
[   51.251091][ T3649]  do_syscall_64+0x112/0x360
[   51.251109][ T3649]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   51.251128][ T3649] 
[   51.251132][ T3649] value changed: 0xffff888100631128 -> 0x0000000000000000
[   51.251143][ T3649] 
[   51.251146][ T3649] Reported by Kernel Concurrency Sanitizer on:
[   51.251163][ T3649] CPU: 1 UID: 0 PID: 3649 Comm: syz-executor223 Not tainted syzkaller #0 PREEMPT(lazy) 
[   51.251186][ T3649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   51.251198][ T3649] ==================================================================
[*] Stopping race threads...
[+] Threads stopped successfully.
[+] LOOP_CLR_FD successful.
[+] Cleanup successful.