Warning: Permanently added '10.128.1.177' (ED25519) to the list of known hosts. [+] open successful. [+] unlink successful. [+] Threads created successfully. [ 51.076488][ T3639] ================================================================== [ 51.076524][ T3639] BUG: KCSAN: data-race in xas_clear_mark / xas_find_marked [ 51.076555][ T3639] [ 51.076563][ T3639] read-write to 0xffff88810b89e228 of 8 bytes by task 3641 on cpu 0: [ 51.076583][ T3639] xas_clear_mark+0x91/0x180 [ 51.076606][ T3639] __folio_start_writeback+0x23f/0x370 [ 51.076640][ T3639] ext4_bio_write_folio+0x5a2/0xa10 [ 51.076665][ T3639] mpage_process_page_bufs+0x484/0x5e0 [ 51.076715][ T3639] mpage_prepare_extent_to_map+0x83e/0xca0 [ 51.076760][ T3639] ext4_do_writepages+0x70f/0x2870 [ 51.076792][ T3639] ext4_writepages+0x191/0x300 [ 51.076826][ T3639] do_writepages+0x1b9/0x300 [ 51.076862][ T3639] filemap_flush_range+0x105/0x140 [ 51.076880][ T3639] sync_file_range+0x1c2/0x240 [ 51.076904][ T3639] __x64_sys_sync_file_range+0x7b/0xd0 [ 51.076939][ T3639] x64_sys_call+0xda6/0x2550 [ 51.076970][ T3639] do_syscall_64+0x112/0x360 [ 51.076991][ T3639] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.077016][ T3639] [ 51.077023][ T3639] read to 0xffff88810b89e228 of 8 bytes by task 3639 on cpu 1: [ 51.077044][ T3639] xas_find_marked+0x211/0x650 [ 51.077070][ T3639] filemap_get_folios_tag+0xf7/0x400 [ 51.077097][ T3639] mpage_prepare_extent_to_map+0x32a/0xca0 [ 51.077139][ T3639] ext4_do_writepages+0x70f/0x2870 [ 51.077172][ T3639] ext4_writepages+0x191/0x300 [ 51.077206][ T3639] do_writepages+0x1b9/0x300 [ 51.077242][ T3639] filemap_flush_range+0x105/0x140 [ 51.077267][ T3639] sync_file_range+0x1c2/0x240 [ 51.077292][ T3639] __x64_sys_sync_file_range+0x7b/0xd0 [ 51.077325][ T3639] x64_sys_call+0xda6/0x2550 [ 51.077359][ T3639] do_syscall_64+0x112/0x360 [ 51.077380][ T3639] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.077400][ T3639] [ 51.077405][ T3639] value changed: 0xfffffffff0000000 -> 0xfffffff800000000 [ 51.077417][ T3639] [ 51.077420][ T3639] Reported by Kernel Concurrency Sanitizer on: [ 51.077451][ T3639] CPU: 1 UID: 0 PID: 3639 Comm: syz-executor399 Not tainted syzkaller #0 PREEMPT(lazy) [ 51.077484][ T3639] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 51.077497][ T3639] ================================================================== [ 51.079037][ T3642] ================================================================== [ 51.079071][ T3642] BUG: KCSAN: data-race in __xa_clear_mark / xas_find_marked [ 51.079112][ T3642] [ 51.079118][ T3642] read-write to 0xffff888106faa908 of 8 bytes by interrupt on cpu 1: [ 51.079139][ T3642] __xa_clear_mark+0xf5/0x1e0 [ 51.079170][ T3642] __folio_end_writeback+0xe7/0x530 [ 51.079217][ T3642] folio_end_writeback_no_dropbehind+0x6d/0x200 [ 51.079251][ T3642] folio_end_writeback+0x1c/0x70 [ 51.079280][ T3642] ext4_finish_bio+0x454/0x770 [ 51.079308][ T3642] ext4_end_bio+0x281/0x3a0 [ 51.079334][ T3642] bio_endio+0x390/0x570 [ 51.079370][ T3642] blk_update_request+0x33a/0x710 [ 51.079395][ T3642] scsi_end_request+0x4b/0x4c0 [ 51.079418][ T3642] scsi_io_completion+0x7f/0x1d0 [ 51.079478][ T3642] scsi_finish_command+0x1c7/0x1e0 [ 51.079512][ T3642] scsi_complete+0x155/0x4d0 [ 51.079548][ T3642] blk_done_softirq+0x77/0xb0 [ 51.079568][ T3642] handle_softirqs+0xcc/0x2a0 [ 51.079587][ T3642] __irq_exit_rcu+0x44/0xe0 [ 51.079606][ T3642] common_interrupt+0x83/0x90 [ 51.079628][ T3642] asm_common_interrupt+0x26/0x40 [ 51.079647][ T3642] pv_native_safe_halt+0xf/0x20 [ 51.079675][ T3642] default_idle+0x9/0x20 [ 51.079693][ T3642] default_idle_call+0x3b/0x60 [ 51.079710][ T3642] do_idle+0x183/0x2d0 [ 51.079729][ T3642] cpu_startup_entry+0x24/0x30 [ 51.079749][ T3642] start_secondary+0x95/0xa0 [ 51.079779][ T3642] common_startup_64+0x13e/0x157 [ 51.079802][ T3642] [ 51.079807][ T3642] read to 0xffff888106faa908 of 8 bytes by task 3642 on cpu 0: [ 51.079821][ T3642] xas_find_marked+0x211/0x650 [ 51.079842][ T3642] filemap_get_folios_tag+0xf7/0x400 [ 51.079864][ T3642] file_fdatawait_range+0x9c/0x170 [ 51.079882][ T3642] sync_file_range+0x14e/0x240 [ 51.079905][ T3642] __x64_sys_sync_file_range+0x7b/0xd0 [ 51.079929][ T3642] x64_sys_call+0xda6/0x2550 [ 51.079952][ T3642] do_syscall_64+0x112/0x360 [ 51.079970][ T3642] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.079989][ T3642] [ 51.079993][ T3642] value changed: 0xfffff80000000000 -> 0x0000000000000000 [ 51.080003][ T3642] [ 51.080007][ T3642] Reported by Kernel Concurrency Sanitizer on: [ 51.080017][ T3642] CPU: 0 UID: 0 PID: 3642 Comm: syz-executor399 Not tainted syzkaller #0 PREEMPT(lazy) [ 51.080042][ T3642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 51.080053][ T3642] ================================================================== [ 54.535992][ T3641] ================================================================== [ 54.536033][ T3641] BUG: KCSAN: data-race in xas_clear_mark / xas_find_marked [ 54.536072][ T3641] [ 54.536080][ T3641] read-write to 0xffff88810b88c6b8 of 8 bytes by task 3643 on cpu 1: [ 54.536100][ T3641] xas_clear_mark+0x91/0x180 [ 54.536121][ T3641] __folio_start_writeback+0x23f/0x370 [ 54.536164][ T3641] ext4_bio_write_folio+0x5a2/0xa10 [ 54.536189][ T3641] mpage_process_page_bufs+0x484/0x5e0 [ 54.536224][ T3641] mpage_prepare_extent_to_map+0x83e/0xca0 [ 54.536273][ T3641] ext4_do_writepages+0x70f/0x2870 [ 54.536307][ T3641] ext4_writepages+0x191/0x300 [ 54.536348][ T3641] do_writepages+0x1b9/0x300 [ 54.536377][ T3641] filemap_flush_range+0x105/0x140 [ 54.536396][ T3641] sync_file_range+0x1c2/0x240 [ 54.536426][ T3641] __x64_sys_sync_file_range+0x7b/0xd0 [ 54.536455][ T3641] x64_sys_call+0xda6/0x2550 [ 54.536480][ T3641] do_syscall_64+0x112/0x360 [ 54.536507][ T3641] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.536535][ T3641] [ 54.536542][ T3641] read to 0xffff88810b88c6b8 of 8 bytes by task 3641 on cpu 0: [ 54.536567][ T3641] xas_find_marked+0x211/0x650 [ 54.536593][ T3641] filemap_get_folios_tag+0xf7/0x400 [ 54.536616][ T3641] mpage_prepare_extent_to_map+0x32a/0xca0 [ 54.536651][ T3641] ext4_do_writepages+0x70f/0x2870 [ 54.536677][ T3641] ext4_writepages+0x191/0x300 [ 54.536714][ T3641] do_writepages+0x1b9/0x300 [ 54.536750][ T3641] filemap_flush_range+0x105/0x140 [ 54.536775][ T3641] sync_file_range+0x1c2/0x240 [ 54.536807][ T3641] __x64_sys_sync_file_range+0x7b/0xd0 [ 54.536837][ T3641] x64_sys_call+0xda6/0x2550 [ 54.536866][ T3641] do_syscall_64+0x112/0x360 [ 54.536891][ T3641] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.536918][ T3641] [ 54.536924][ T3641] value changed: 0xffffffff00000000 -> 0xffffffc000000000 [ 54.536939][ T3641] [ 54.536944][ T3641] Reported by Kernel Concurrency Sanitizer on: [ 54.536958][ T3641] CPU: 0 UID: 0 PID: 3641 Comm: syz-executor399 Not tainted syzkaller #0 PREEMPT(lazy) [ 54.536989][ T3641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 54.537003][ T3641] ================================================================== [ 54.900145][ T3642] ================================================================== [ 54.900184][ T3642] BUG: KCSAN: data-race in __xa_clear_mark / xas_find_marked [ 54.900232][ T3642] [ 54.900237][ T3642] read-write to 0xffff888106fcbd90 of 8 bytes by interrupt on cpu 1: [ 54.900258][ T3642] __xa_clear_mark+0xf5/0x1e0 [ 54.900287][ T3642] __folio_end_writeback+0xe7/0x530 [ 54.900324][ T3642] folio_end_writeback_no_dropbehind+0x6d/0x200 [ 54.900357][ T3642] folio_end_writeback+0x1c/0x70 [ 54.900383][ T3642] ext4_finish_bio+0x454/0x770 [ 54.900411][ T3642] ext4_end_bio+0x281/0x3a0 [ 54.900439][ T3642] bio_endio+0x390/0x570 [ 54.900472][ T3642] blk_update_request+0x33a/0x710 [ 54.900506][ T3642] scsi_end_request+0x4b/0x4c0 [ 54.900536][ T3642] scsi_io_completion+0x7f/0x1d0 [ 54.900566][ T3642] scsi_finish_command+0x1c7/0x1e0 [ 54.900601][ T3642] scsi_complete+0x155/0x4d0 [ 54.900638][ T3642] blk_done_softirq+0x77/0xb0 [ 54.900666][ T3642] handle_softirqs+0xcc/0x2a0 [ 54.900689][ T3642] __irq_exit_rcu+0x44/0xe0 [ 54.900711][ T3642] common_interrupt+0x83/0x90 [ 54.900741][ T3642] asm_common_interrupt+0x26/0x40 [ 54.900768][ T3642] rwsem_spin_on_owner+0xa8/0x110 [ 54.900791][ T3642] rwsem_down_write_slowpath+0xea/0xab0 [ 54.900813][ T3642] down_write+0xad/0xc0 [ 54.900830][ T3642] ext4_buffered_write_iter+0x5e/0x480 [ 54.900863][ T3642] ext4_file_write_iter+0x36e/0x1020 [ 54.900895][ T3642] vfs_write+0x57f/0x9a0 [ 54.900936][ T3642] __x64_sys_pwrite64+0xfd/0x150 [ 54.900976][ T3642] x64_sys_call+0x23be/0x2550 [ 54.901005][ T3642] do_syscall_64+0x112/0x360 [ 54.901031][ T3642] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.901057][ T3642] [ 54.901065][ T3642] read to 0xffff888106fcbd90 of 8 bytes by task 3642 on cpu 0: [ 54.901084][ T3642] xas_find_marked+0x211/0x650 [ 54.901107][ T3642] filemap_get_folios_tag+0xf7/0x400 [ 54.901137][ T3642] file_fdatawait_range+0x9c/0x170 [ 54.901162][ T3642] sync_file_range+0x14e/0x240 [ 54.901192][ T3642] __x64_sys_sync_file_range+0x7b/0xd0 [ 54.901242][ T3642] x64_sys_call+0xda6/0x2550 [ 54.901271][ T3642] do_syscall_64+0x112/0x360 [ 54.901295][ T3642] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.901322][ T3642] [ 54.901327][ T3642] value changed: 0xffffffffe0000000 -> 0xfffffff000000000 [ 54.901343][ T3642] [ 54.901347][ T3642] Reported by Kernel Concurrency Sanitizer on: [ 54.901358][ T3642] CPU: 0 UID: 0 PID: 3642 Comm: syz-executor399 Not tainted syzkaller #0 PREEMPT(lazy) [ 54.901383][ T3642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 54.901399][ T3642] ================================================================== [ 55.204155][ T29] kauditd_printk_skb: 6 callbacks suppressed [ 55.204198][ T29] audit: type=1400 audit(1790662115.754:184): avc: denied { write } for pid=3650 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 [ 55.311425][ T29] audit: type=1400 audit(1790662115.854:185): avc: denied { write } for pid=3661 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 [ 55.618166][ T29] audit: type=1400 audit(1790662116.164:186): avc: denied { write } for pid=3664 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 [ 55.719991][ T29] audit: type=1400 audit(1790662116.264:187): avc: denied { write } for pid=3675 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 [ 56.109054][ T29] audit: type=1400 audit(1790662116.654:188): avc: denied { write } for pid=3678 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 [ 56.206150][ T29] audit: type=1400 audit(1790662116.754:189): avc: denied { write } for pid=3689 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 [ 56.501937][ T29] audit: type=1400 audit(1790662117.044:190): avc: denied { write } for pid=3692 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 [ 56.591347][ T29] audit: type=1400 audit(1790662117.134:191): avc: denied { write } for pid=3703 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 [ 56.912878][ T29] audit: type=1400 audit(1790662117.464:192): avc: denied { write } for pid=3706 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 [ 57.009373][ T29] audit: type=1400 audit(1790662117.554:193): avc: denied { write } for pid=3717 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 [ 58.267411][ T3638] ================================================================== [ 58.267468][ T3638] BUG: KCSAN: data-race in xas_find_marked / xas_set_mark [ 58.267506][ T3638] [ 58.267513][ T3638] read-write to 0xffff88810590f900 of 8 bytes by task 3643 on cpu 1: [ 58.267530][ T3638] xas_set_mark+0x82/0x140 [ 58.267553][ T3638] __folio_start_writeback+0x16b/0x370 [ 58.267596][ T3638] ext4_bio_write_folio+0x5a2/0xa10 [ 58.267627][ T3638] mpage_process_page_bufs+0x484/0x5e0 [ 58.267665][ T3638] mpage_prepare_extent_to_map+0x83e/0xca0 [ 58.267703][ T3638] ext4_do_writepages+0x70f/0x2870 [ 58.267733][ T3638] ext4_writepages+0x191/0x300 [ 58.267764][ T3638] do_writepages+0x1b9/0x300 [ 58.267795][ T3638] filemap_flush_range+0x105/0x140 [ 58.267820][ T3638] sync_file_range+0x1c2/0x240 [ 58.267850][ T3638] __x64_sys_sync_file_range+0x7b/0xd0 [ 58.267884][ T3638] x64_sys_call+0xda6/0x2550 [ 58.267912][ T3638] do_syscall_64+0x112/0x360 [ 58.267937][ T3638] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.267964][ T3638] [ 58.267971][ T3638] read to 0xffff88810590f900 of 8 bytes by task 3638 on cpu 0: [ 58.267992][ T3638] xas_find_marked+0x211/0x650 [ 58.268022][ T3638] filemap_get_folios_tag+0xf7/0x400 [ 58.268055][ T3638] file_fdatawait_range+0x9c/0x170 [ 58.268082][ T3638] sync_file_range+0x14e/0x240 [ 58.268115][ T3638] __x64_sys_sync_file_range+0x7b/0xd0 [ 58.268150][ T3638] x64_sys_call+0xda6/0x2550 [ 58.268183][ T3638] do_syscall_64+0x112/0x360 [ 58.268203][ T3638] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.268225][ T3638] [ 58.268231][ T3638] value changed: 0x0000000000000000 -> 0x0000000000000001 [ 58.268245][ T3638] [ 58.268250][ T3638] Reported by Kernel Concurrency Sanitizer on: [ 58.268264][ T3638] CPU: 0 UID: 0 PID: 3638 Comm: syz-executor399 Not tainted syzkaller #0 PREEMPT(lazy) [ 58.268295][ T3638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 58.268308][ T3638] ================================================================== [ 58.797022][ T3639] ================================================================== [ 58.797061][ T3639] BUG: KCSAN: data-race in xas_clear_mark / xas_find_marked [ 58.797100][ T3639] [ 58.797108][ T3639] read-write to 0xffff88810b89e228 of 8 bytes by task 3641 on cpu 0: [ 58.797130][ T3639] xas_clear_mark+0x91/0x180 [ 58.797153][ T3639] __folio_start_writeback+0x23f/0x370 [ 58.797186][ T3639] ext4_bio_write_folio+0x5a2/0xa10 [ 58.797215][ T3639] mpage_process_page_bufs+0x484/0x5e0 [ 58.797259][ T3639] mpage_prepare_extent_to_map+0x83e/0xca0 [ 58.797304][ T3639] ext4_do_writepages+0x70f/0x2870 [ 58.797330][ T3639] ext4_writepages+0x191/0x300 [ 58.797369][ T3639] do_writepages+0x1b9/0x300 [ 58.797404][ T3639] filemap_flush_range+0x105/0x140 [ 58.797423][ T3639] sync_file_range+0x1c2/0x240 [ 58.797453][ T3639] __x64_sys_sync_file_range+0x7b/0xd0 [ 58.797488][ T3639] x64_sys_call+0xda6/0x2550 [ 58.797521][ T3639] do_syscall_64+0x112/0x360 [ 58.797548][ T3639] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.797575][ T3639] [ 58.797583][ T3639] read to 0xffff88810b89e228 of 8 bytes by task 3639 on cpu 1: [ 58.797605][ T3639] xas_find_marked+0x211/0x650 [ 58.797633][ T3639] filemap_get_folios_tag+0xf7/0x400 [ 58.797657][ T3639] mpage_prepare_extent_to_map+0x32a/0xca0 [ 58.797689][ T3639] ext4_do_writepages+0x70f/0x2870 [ 58.797726][ T3639] ext4_writepages+0x191/0x300 [ 58.797768][ T3639] do_writepages+0x1b9/0x300 [ 58.797807][ T3639] filemap_flush_range+0x105/0x140 [ 58.797829][ T3639] sync_file_range+0x1c2/0x240 [ 58.797853][ T3639] __x64_sys_sync_file_range+0x7b/0xd0 [ 58.797888][ T3639] x64_sys_call+0xda6/0x2550 [ 58.797922][ T3639] do_syscall_64+0x112/0x360 [ 58.797949][ T3639] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.797976][ T3639] [ 58.797980][ T3639] value changed: 0xffffffffff000000 -> 0xfffffffffc000000 [ 58.797996][ T3639] [ 58.798002][ T3639] Reported by Kernel Concurrency Sanitizer on: [ 58.798016][ T3639] CPU: 1 UID: 0 PID: 3639 Comm: syz-executor399 Not tainted syzkaller #0 PREEMPT(lazy) [ 58.798044][ T3639] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 58.798057][ T3639] ================================================================== [ 59.360566][ T3638] ================================================================== [ 59.360613][ T3638] BUG: KCSAN: data-race in __xa_clear_mark / xas_find_marked [ 59.360662][ T3638] [ 59.360668][ T3638] read-write to 0xffff88810b88a908 of 8 bytes by interrupt on cpu 1: [ 59.360690][ T3638] __xa_clear_mark+0xf5/0x1e0 [ 59.360725][ T3638] __folio_end_writeback+0xe7/0x530 [ 59.360770][ T3638] folio_end_writeback_no_dropbehind+0x6d/0x200 [ 59.360805][ T3638] folio_end_writeback+0x1c/0x70 [ 59.360835][ T3638] ext4_finish_bio+0x454/0x770 [ 59.360870][ T3638] ext4_end_bio+0x281/0x3a0 [ 59.360902][ T3638] bio_endio+0x390/0x570 [ 59.360948][ T3638] blk_update_request+0x33a/0x710 [ 59.360982][ T3638] scsi_end_request+0x4b/0x4c0 [ 59.361015][ T3638] scsi_io_completion+0x7f/0x1d0 [ 59.361051][ T3638] scsi_finish_command+0x1c7/0x1e0 [ 59.361083][ T3638] scsi_complete+0x155/0x4d0 [ 59.361124][ T3638] blk_done_softirq+0x77/0xb0 [ 59.361158][ T3638] handle_softirqs+0xcc/0x2a0 [ 59.361189][ T3638] __irq_exit_rcu+0x44/0xe0 [ 59.361220][ T3638] common_interrupt+0x83/0x90 [ 59.361247][ T3638] asm_common_interrupt+0x26/0x40 [ 59.361272][ T3638] __kcsan_check_access+0x19d/0x1d0 [ 59.361294][ T3638] __folio_start_writeback+0x309/0x370 [ 59.361330][ T3638] ext4_bio_write_folio+0x5a2/0xa10 [ 59.361359][ T3638] mpage_process_page_bufs+0x484/0x5e0 [ 59.361406][ T3638] mpage_prepare_extent_to_map+0x83e/0xca0 [ 59.361457][ T3638] ext4_do_writepages+0x70f/0x2870 [ 59.361496][ T3638] ext4_writepages+0x191/0x300 [ 59.361532][ T3638] do_writepages+0x1b9/0x300 [ 59.361566][ T3638] filemap_flush_range+0x105/0x140 [ 59.361595][ T3638] sync_file_range+0x1c2/0x240 [ 59.361633][ T3638] __x64_sys_sync_file_range+0x7b/0xd0 [ 59.361665][ T3638] x64_sys_call+0xda6/0x2550 [ 59.361697][ T3638] do_syscall_64+0x112/0x360 [ 59.361723][ T3638] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 59.361748][ T3638] [ 59.361756][ T3638] read to 0xffff88810b88a908 of 8 bytes by task 3638 on cpu 0: [ 59.361791][ T3638] xas_find_marked+0x211/0x650 [ 59.361819][ T3638] filemap_get_folios_tag+0xf7/0x400 [ 59.361855][ T3638] file_fdatawait_range+0x9c/0x170 [ 59.361884][ T3638] sync_file_range+0x14e/0x240 [ 59.361919][ T3638] __x64_sys_sync_file_range+0x7b/0xd0 [ 59.361959][ T3638] x64_sys_call+0xda6/0x2550 [ 59.361997][ T3638] do_syscall_64+0x112/0x360 [ 59.362027][ T3638] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 59.362059][ T3638] [ 59.362065][ T3638] value changed: 0x0000ffffffffff80 -> 0x0000fffffffffc00 [ 59.362083][ T3638] [ 59.362087][ T3638] Reported by Kernel Concurrency Sanitizer on: [ 59.362100][ T3638] CPU: 0 UID: 0 PID: 3638 Comm: syz-executor399 Not tainted syzkaller #0 PREEMPT(lazy) [ 59.362131][ T3638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 59.362150][ T3638] ================================================================== [+] Threads joined successfully. [+] close successful. [+] Reproducer finished.