ode
[   40.904327][   T38] veth1_vlan: left promiscuous mode
[   40.904365][   T38] veth0_vlan: left promiscuous mode
[   41.016858][   T38] team0 (unregistering): Port device team_slave_1 removed
[   41.026140][   T38] team0 (unregistering): Port device team_slave_0 removed
[   41.049099][ T3021] 8021q: adding VLAN 0 to HW filter on device eth5
[   41.146434][ T3021] 8021q: adding VLAN 0 to HW filter on device eth6
[   41.247187][ T3021] 8021q: adding VLAN 0 to HW filter on device eth7
[   41.353148][ T3021] 8021q: adding VLAN 0 to HW filter on device eth8
Warning: Permanently added '10.128.0.194' (ED25519) to the list of known hosts.
[+] memfd_create successful.
[+] ftruncate backing successful.
[+] open /dev/loop-control successful.
[+] ioctl LOOP_CTL_GET_FREE successful, dev_nr=0.
[+] open loop device successful.
[+] ioctl LOOP_SET_FD successful.
[-] Failed to ioctl LOOP_SET_DIRECT_IO: Invalid argument
[+] open loop device O_DIRECT successful.
[+] mkdir ./ramfs_test successful.
[+] mount ramfs successful.
[+] open ramfs file successful.
[+] ftruncate ramfs file successful.
[+] mmap successful.
[   46.191315][   T29] kauditd_printk_skb: 11 callbacks suppressed
[   46.191334][   T29] audit: type=1400 audit(1791054193.512:183): avc:  denied  { read write } for  pid=3640 comm="syz-executor838" 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
[   46.191474][   T29] audit: type=1400 audit(1791054193.512:184): avc:  denied  { open } for  pid=3640 comm="syz-executor838" 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
[   46.191806][ T3640] loop0: detected capacity change from 0 to 2048
[   46.191843][   T29] audit: type=1400 audit(1791054193.512:185): avc:  denied  { ioctl } for  pid=3640 comm="syz-executor838" 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
[   46.212130][   T29] audit: type=1400 audit(1791054193.532:186): avc:  denied  { mount } for  pid=3640 comm="syz-executor838" name="/" dev="ramfs" ino=5071 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:ramfs_t tclass=filesystem permissive=1
[   46.328024][ T3643] ==================================================================
[   46.328064][ T3643] BUG: KCSAN: data-race in copy_folio_from_iter_atomic / copy_folio_from_iter_atomic
[   46.328111][ T3643] 
[   46.328119][ T3643] read to 0xffff88810d872000 of 4096 bytes by task 12 on cpu 0:
[   46.328138][ T3643]  copy_folio_from_iter_atomic+0x728/0x10a0
[   46.328171][ T3643]  generic_perform_write+0x2c4/0x490
[   46.328221][ T3643]  shmem_file_write_iter+0xc5/0xf0
[   46.328241][ T3643]  lo_rw_aio+0x6ab/0x760
[   46.328261][ T3643]  loop_process_work+0x569/0xad0
[   46.328286][ T3643]  loop_rootcg_workfn+0x22/0x30
[   46.328310][ T3643]  process_scheduled_works+0x56a/0xa50
[   46.328344][ T3643]  worker_thread+0x569/0x750
[   46.328378][ T3643]  kthread+0x223/0x270
[   46.328396][ T3643]  ret_from_fork+0x146/0x330
[   46.328421][ T3643]  ret_from_fork_asm+0x1a/0x30
[   46.328443][ T3643] 
[   46.328449][ T3643] write to 0xffff88810d872000 of 4096 bytes by task 3643 on cpu 1:
[   46.328469][ T3643]  copy_folio_from_iter_atomic+0x282/0x10a0
[   46.328509][ T3643]  generic_perform_write+0x2c4/0x490
[   46.328540][ T3643]  __generic_file_write_iter+0x9e/0x120
[   46.328573][ T3643]  generic_file_write_iter+0x77/0x1f0
[   46.328601][ T3643]  vfs_write+0x57f/0x9a0
[   46.328625][ T3643]  __x64_sys_pwrite64+0xfd/0x150
[   46.328651][ T3643]  x64_sys_call+0x23be/0x2550
[   46.328676][ T3643]  do_syscall_64+0x112/0x360
[   46.328702][ T3643]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   46.328723][ T3643] 
[   46.328728][ T3643] Reported by Kernel Concurrency Sanitizer on:
[   46.328741][ T3643] CPU: 1 UID: 0 PID: 3643 Comm: syz-executor838 Not tainted syzkaller #0 PREEMPT(lazy) 
[   46.328766][ T3643] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
[   46.328777][ T3643] ==================================================================
[+] Done.