[ 44.049372][ T29] kauditd_printk_skb: 4 callbacks suppressed [ 44.049387][ T29] audit: type=1400 audit(1790972348.114:178): avc: denied { write } for pid=3566 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 [ 44.089017][ T29] audit: type=1400 audit(1790972348.154:179): avc: denied { write } for pid=3577 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 [ 44.119203][ T3021] 8021q: adding VLAN 0 to HW filter on device eth6 [ 44.217501][ T29] audit: type=1400 audit(1790972348.284:180): avc: denied { write } for pid=3580 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 [ 44.252476][ T29] audit: type=1400 audit(1790972348.314:181): avc: denied { write } for pid=3591 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 [ 44.288673][ T3021] 8021q: adding VLAN 0 to HW filter on device eth7 [ 44.398186][ T29] audit: type=1400 audit(1790972348.464:182): avc: denied { write } for pid=3594 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 [ 44.434280][ T29] audit: type=1400 audit(1790972348.504:183): avc: denied { write } for pid=3605 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 [ 44.458039][ T3021] 8021q: adding VLAN 0 to HW filter on device eth8 Warning: Permanently added '10.128.1.149' (ED25519) to the list of known hosts. [*] Starting reproducer... [+] cgroup v1 setup successful. [+] Threads started. Waiting for 5 seconds... [ 50.775414][ T3640] ================================================================== [ 50.775457][ T3640] BUG: KCSAN: data-race in shmem_fallocate / shmem_writeout [ 50.775495][ T3640] [ 50.775501][ T3640] write to 0xffffc90000f53e20 of 8 bytes by task 3643 on cpu 0: [ 50.775519][ T3640] shmem_fallocate+0x72e/0x8d0 [ 50.775541][ T3640] vfs_fallocate+0x3ac/0x400 [ 50.775574][ T3640] __x64_sys_fallocate+0x7a/0xd0 [ 50.775608][ T3640] x64_sys_call+0x1e1d/0x2550 [ 50.775636][ T3640] do_syscall_64+0x112/0x360 [ 50.775659][ T3640] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.775683][ T3640] [ 50.775688][ T3640] read to 0xffffc90000f53e20 of 8 bytes by task 3640 on cpu 1: [ 50.775705][ T3640] shmem_writeout+0x2b6/0x8f0 [ 50.775735][ T3640] shrink_folio_list+0x1a81/0x26f0 [ 50.775768][ T3640] evict_folios+0x1c6e/0x2830 [ 50.775792][ T3640] try_to_shrink_lruvec+0x8fd/0xb30 [ 50.775819][ T3640] shrink_lruvec+0x252/0x1d40 [ 50.775856][ T3640] shrink_node+0x67c/0x2000 [ 50.775879][ T3640] do_try_to_free_pages+0x408/0xca0 [ 50.775912][ T3640] try_to_free_mem_cgroup_pages+0x201/0x420 [ 50.775949][ T3640] mem_cgroup_force_empty_write+0x77/0x100 [ 50.775980][ T3640] cgroup_file_write+0x197/0x350 [ 50.776014][ T3640] kernfs_fop_write_iter+0x1d2/0x2e0 [ 50.776042][ T3640] vfs_write+0x57f/0x9a0 [ 50.776072][ T3640] ksys_write+0xdc/0x1a0 [ 50.776102][ T3640] __x64_sys_write+0x40/0x50 [ 50.776132][ T3640] x64_sys_call+0x154e/0x2550 [ 50.776156][ T3640] do_syscall_64+0x112/0x360 [ 50.776176][ T3640] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.776198][ T3640] [ 50.776202][ T3640] value changed: 0x0000000000001263 -> 0x0000000000001264 [ 50.776214][ T3640] [ 50.776218][ T3640] Reported by Kernel Concurrency Sanitizer on: [ 50.776244][ T3640] CPU: 1 UID: 0 PID: 3640 Comm: syz-executor144 Not tainted syzkaller #0 PREEMPT(lazy) [ 50.776271][ T3640] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 50.776286][ T3640] ================================================================== [ 51.955351][ T3637] ================================================================== [ 51.955387][ T3637] BUG: KCSAN: data-race in shmem_fallocate / shmem_writeout [ 51.955428][ T3637] [ 51.955436][ T3637] read-write to 0xffffc90000f83e30 of 8 bytes by task 3640 on cpu 1: [ 51.955457][ T3637] shmem_writeout+0x2eb/0x8f0 [ 51.955484][ T3637] shrink_folio_list+0x1a81/0x26f0 [ 51.955514][ T3637] evict_folios+0x1c6e/0x2830 [ 51.955537][ T3637] try_to_shrink_lruvec+0x8fd/0xb30 [ 51.955571][ T3637] shrink_lruvec+0x252/0x1d40 [ 51.955608][ T3637] shrink_node+0x67c/0x2000 [ 51.955639][ T3637] do_try_to_free_pages+0x408/0xca0 [ 51.955682][ T3637] try_to_free_mem_cgroup_pages+0x201/0x420 [ 51.955724][ T3637] mem_cgroup_force_empty_write+0x77/0x100 [ 51.955756][ T3637] cgroup_file_write+0x197/0x350 [ 51.955798][ T3637] kernfs_fop_write_iter+0x1d2/0x2e0 [ 51.955834][ T3637] vfs_write+0x57f/0x9a0 [ 51.955863][ T3637] ksys_write+0xdc/0x1a0 [ 51.955898][ T3637] __x64_sys_write+0x40/0x50 [ 51.955937][ T3637] x64_sys_call+0x154e/0x2550 [ 51.955972][ T3637] do_syscall_64+0x112/0x360 [ 51.955995][ T3637] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.956016][ T3637] [ 51.956023][ T3637] read to 0xffffc90000f83e30 of 8 bytes by task 3637 on cpu 0: [ 51.956047][ T3637] shmem_fallocate+0x5cb/0x8d0 [ 51.956073][ T3637] vfs_fallocate+0x3ac/0x400 [ 51.956113][ T3637] __x64_sys_fallocate+0x7a/0xd0 [ 51.956152][ T3637] x64_sys_call+0x1e1d/0x2550 [ 51.956175][ T3637] do_syscall_64+0x112/0x360 [ 51.956194][ T3637] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.956221][ T3637] [ 51.956226][ T3637] value changed: 0x0000000000000a83 -> 0x0000000000000a85 [ 51.956241][ T3637] [ 51.956246][ T3637] Reported by Kernel Concurrency Sanitizer on: [ 51.956260][ T3637] CPU: 0 UID: 0 PID: 3637 Comm: syz-executor144 Not tainted syzkaller #0 PREEMPT(lazy) [ 51.956302][ T3637] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 51.956314][ T3637] ================================================================== [ 54.363516][ T29] audit: type=1400 audit(1790972358.424:184): avc: denied { write } for pid=3647 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 [ 54.459844][ T29] audit: type=1400 audit(1790972358.524:185): avc: denied { write } for pid=3658 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 [ 54.721839][ T29] audit: type=1400 audit(1790972358.784:186): avc: denied { write } for pid=3661 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 [ 54.792477][ T29] audit: type=1400 audit(1790972358.854:187): avc: denied { write } for pid=3672 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 [ 54.932570][ T29] audit: type=1400 audit(1790972358.994:188): avc: denied { write } for pid=3675 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 [ 54.977158][ T29] audit: type=1400 audit(1790972359.044:189): avc: denied { write } for pid=3686 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 [ 55.353612][ T29] audit: type=1400 audit(1790972359.414:190): avc: denied { write } for pid=3689 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 [ 55.447005][ T29] audit: type=1400 audit(1790972359.514:191): avc: denied { write } for pid=3700 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 [ 55.733769][ T29] audit: type=1400 audit(1790972359.794:192): avc: denied { write } for pid=3703 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 [ 55.828008][ T29] audit: type=1400 audit(1790972359.894:193): avc: denied { write } for pid=3714 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 [+] Reproducer finished.