Warning: Permanently added '10.128.1.49' (ED25519) to the list of known hosts. [*] Starting KCSAN race reproducer sched_setaffinity: Invalid argument sched_setaffinity: Invalid argument [+] Threads started, running for 10 seconds... sched_setaffinity: Invalid argument [ 49.248202][ T3666] ================================================================== [ 49.248236][ T3666] BUG: KCSAN: data-race in dentry_unlink_inode / step_into_slowpath [ 49.248280][ T3666] [ 49.248286][ T3666] write to 0xffff888106ece870 of 8 bytes by task 3663 on cpu 0: [ 49.248302][ T3666] dentry_unlink_inode+0x65/0x260 [ 49.248331][ T3666] d_delete+0x164/0x180 [ 49.248359][ T3666] d_delete_notify+0x32/0x100 [ 49.248376][ T3666] vfs_unlink+0x287/0x490 [ 49.248391][ T3666] filename_unlinkat+0x1dc/0x410 [ 49.248410][ T3666] __se_sys_unlink+0x2b/0xe0 [ 49.248434][ T3666] __x64_sys_unlink+0x1f/0x30 [ 49.248451][ T3666] x64_sys_call+0x18ee/0x2550 [ 49.248473][ T3666] do_syscall_64+0x112/0x360 [ 49.248496][ T3666] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.248518][ T3666] [ 49.248523][ T3666] read to 0xffff888106ece870 of 8 bytes by task 3666 on cpu 1: [ 49.248540][ T3666] step_into_slowpath+0x127/0x600 [ 49.248567][ T3666] path_lookupat+0x2eb/0x4c0 [ 49.248589][ T3666] filename_lookup+0x18f/0x390 [ 49.248615][ T3666] do_readlinkat+0x74/0x2f0 [ 49.248643][ T3666] __x64_sys_readlink+0x47/0x60 [ 49.248670][ T3666] x64_sys_call+0x1d41/0x2550 [ 49.248694][ T3666] do_syscall_64+0x112/0x360 [ 49.248714][ T3666] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.248733][ T3666] [ 49.248736][ T3666] value changed: 0xffff8881004d1948 -> 0x0000000000000000 [ 49.248746][ T3666] [ 49.248749][ T3666] Reported by Kernel Concurrency Sanitizer on: [ 49.248768][ T3666] CPU: 1 UID: 0 PID: 3666 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 49.248815][ T3666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 49.248828][ T3666] ================================================================== [ 49.329062][ T3665] ================================================================== [ 49.329093][ T3665] BUG: KCSAN: data-race in __d_instantiate / path_lookupat [ 49.329129][ T3665] [ 49.329134][ T3665] write to 0xffff8881059817b0 of 8 bytes by task 3663 on cpu 0: [ 49.329148][ T3665] __d_instantiate+0x1db/0x390 [ 49.329178][ T3665] d_instantiate_new+0x68/0xf0 [ 49.329207][ T3665] ext4_add_nondir+0x187/0x1b0 [ 49.329228][ T3665] ext4_symlink+0x58f/0x660 [ 49.329250][ T3665] vfs_symlink+0xfd/0x220 [ 49.329270][ T3665] filename_symlinkat+0xe8/0x2b0 [ 49.329292][ T3665] __se_sys_symlink+0x42/0x1b0 [ 49.329315][ T3665] __x64_sys_symlink+0x31/0x40 [ 49.329336][ T3665] x64_sys_call+0x211f/0x2550 [ 49.329364][ T3665] do_syscall_64+0x112/0x360 [ 49.329384][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.329407][ T3665] [ 49.329413][ T3665] read to 0xffff8881059817b0 of 8 bytes by task 3665 on cpu 1: [ 49.329430][ T3665] path_lookupat+0x1eb/0x4c0 [ 49.329456][ T3665] filename_lookup+0x18f/0x390 [ 49.329482][ T3665] do_readlinkat+0x74/0x2f0 [ 49.329506][ T3665] __x64_sys_readlink+0x47/0x60 [ 49.329529][ T3665] x64_sys_call+0x1d41/0x2550 [ 49.329556][ T3665] do_syscall_64+0x112/0x360 [ 49.329581][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.329599][ T3665] [ 49.329603][ T3665] value changed: 0x0000000000000000 -> 0xffff888106ee35b8 [ 49.329613][ T3665] [ 49.329616][ T3665] Reported by Kernel Concurrency Sanitizer on: [ 49.329626][ T3665] CPU: 1 UID: 0 PID: 3665 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 49.329649][ T3665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 49.329662][ T3665] ================================================================== [ 49.763924][ T3665] ================================================================== [ 49.763956][ T3665] BUG: KCSAN: data-race in dont_mount / lookup_fast [ 49.763984][ T3665] [ 49.763990][ T3665] read-write to 0xffff888106ec96c0 of 4 bytes by task 3663 on cpu 0: [ 49.764008][ T3665] dont_mount+0x2a/0x40 [ 49.764027][ T3665] vfs_unlink+0x202/0x490 [ 49.764047][ T3665] filename_unlinkat+0x1dc/0x410 [ 49.764068][ T3665] __se_sys_unlink+0x2b/0xe0 [ 49.764089][ T3665] __x64_sys_unlink+0x1f/0x30 [ 49.764106][ T3665] x64_sys_call+0x18ee/0x2550 [ 49.764134][ T3665] do_syscall_64+0x112/0x360 [ 49.764164][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.764183][ T3665] [ 49.764188][ T3665] read to 0xffff888106ec96c0 of 4 bytes by task 3665 on cpu 1: [ 49.764202][ T3665] lookup_fast+0xf1/0x320 [ 49.764229][ T3665] path_lookupat+0x120/0x4c0 [ 49.764252][ T3665] filename_lookup+0x18f/0x390 [ 49.764273][ T3665] do_readlinkat+0x74/0x2f0 [ 49.764300][ T3665] __x64_sys_readlink+0x47/0x60 [ 49.764327][ T3665] x64_sys_call+0x1d41/0x2550 [ 49.764354][ T3665] do_syscall_64+0x112/0x360 [ 49.764379][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.764402][ T3665] [ 49.764406][ T3665] value changed: 0x00340040 -> 0x00040040 [ 49.764418][ T3665] [ 49.764422][ T3665] Reported by Kernel Concurrency Sanitizer on: [ 49.764431][ T3665] CPU: 1 UID: 0 PID: 3665 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 49.764453][ T3665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 49.764464][ T3665] ================================================================== [ 50.339881][ T3667] ================================================================== [ 50.339919][ T3667] BUG: KCSAN: data-race in __d_instantiate / path_lookupat [ 50.339959][ T3667] [ 50.339965][ T3667] read-write to 0xffff88810598f000 of 4 bytes by task 3663 on cpu 0: [ 50.339982][ T3667] __d_instantiate+0x2a8/0x390 [ 50.340007][ T3667] d_instantiate_new+0x68/0xf0 [ 50.340032][ T3667] ext4_add_nondir+0x187/0x1b0 [ 50.340052][ T3667] ext4_symlink+0x58f/0x660 [ 50.340072][ T3667] vfs_symlink+0xfd/0x220 [ 50.340093][ T3667] filename_symlinkat+0xe8/0x2b0 [ 50.340122][ T3667] __se_sys_symlink+0x42/0x1b0 [ 50.340144][ T3667] __x64_sys_symlink+0x31/0x40 [ 50.340162][ T3667] x64_sys_call+0x211f/0x2550 [ 50.340185][ T3667] do_syscall_64+0x112/0x360 [ 50.340206][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.340225][ T3667] [ 50.340231][ T3667] read to 0xffff88810598f000 of 4 bytes by task 3667 on cpu 1: [ 50.340249][ T3667] path_lookupat+0x19b/0x4c0 [ 50.340275][ T3667] filename_lookup+0x18f/0x390 [ 50.340301][ T3667] do_readlinkat+0x74/0x2f0 [ 50.340326][ T3667] __x64_sys_readlink+0x47/0x60 [ 50.340365][ T3667] x64_sys_call+0x1d41/0x2550 [ 50.340393][ T3667] do_syscall_64+0x112/0x360 [ 50.340418][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.340440][ T3667] [ 50.340444][ T3667] value changed: 0x00040040 -> 0x00340040 [ 50.340453][ T3667] [ 50.340457][ T3667] Reported by Kernel Concurrency Sanitizer on: [ 50.340467][ T3667] CPU: 1 UID: 0 PID: 3667 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 50.340492][ T3667] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 50.340503][ T3667] ================================================================== [ 50.695312][ T3665] ================================================================== [ 50.695340][ T3665] BUG: KCSAN: data-race in dont_mount / step_into_slowpath [ 50.695372][ T3665] [ 50.695379][ T3665] read-write to 0xffff888106ecbf00 of 4 bytes by task 3663 on cpu 0: [ 50.695397][ T3665] dont_mount+0x2a/0x40 [ 50.695416][ T3665] vfs_unlink+0x202/0x490 [ 50.695436][ T3665] filename_unlinkat+0x1dc/0x410 [ 50.695453][ T3665] __se_sys_unlink+0x2b/0xe0 [ 50.695474][ T3665] __x64_sys_unlink+0x1f/0x30 [ 50.695495][ T3665] x64_sys_call+0x18ee/0x2550 [ 50.695523][ T3665] do_syscall_64+0x112/0x360 [ 50.695544][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.695566][ T3665] [ 50.695571][ T3665] read to 0xffff888106ecbf00 of 4 bytes by task 3665 on cpu 1: [ 50.695585][ T3665] step_into_slowpath+0xea/0x600 [ 50.695608][ T3665] path_lookupat+0x2eb/0x4c0 [ 50.695634][ T3665] filename_lookup+0x18f/0x390 [ 50.695667][ T3665] do_readlinkat+0x74/0x2f0 [ 50.695695][ T3665] __x64_sys_readlink+0x47/0x60 [ 50.695720][ T3665] x64_sys_call+0x1d41/0x2550 [ 50.695747][ T3665] do_syscall_64+0x112/0x360 [ 50.695772][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.695795][ T3665] [ 50.695800][ T3665] value changed: 0x00340040 -> 0x00040040 [ 50.695810][ T3665] [ 50.695814][ T3665] Reported by Kernel Concurrency Sanitizer on: [ 50.695823][ T3665] CPU: 1 UID: 0 PID: 3665 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 50.695845][ T3665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 50.695856][ T3665] ================================================================== [ 50.697981][ T3667] ================================================================== [ 50.698008][ T3667] BUG: KCSAN: data-race in d_lru_add / step_into_slowpath [ 50.698034][ T3667] [ 50.698039][ T3667] write to 0xffff88810598c0c0 of 4 bytes by task 3663 on cpu 0: [ 50.698053][ T3667] d_lru_add+0x45/0x100 [ 50.698067][ T3667] fast_dput+0x272/0x300 [ 50.698090][ T3667] dput+0x1f/0x50 [ 50.698108][ T3667] filename_symlinkat+0x11f/0x2b0 [ 50.698127][ T3667] __se_sys_symlink+0x42/0x1b0 [ 50.698149][ T3667] __x64_sys_symlink+0x31/0x40 [ 50.698171][ T3667] x64_sys_call+0x211f/0x2550 [ 50.698198][ T3667] do_syscall_64+0x112/0x360 [ 50.698221][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.698243][ T3667] [ 50.698249][ T3667] read to 0xffff88810598c0c0 of 4 bytes by task 3667 on cpu 1: [ 50.698266][ T3667] step_into_slowpath+0xea/0x600 [ 50.698294][ T3667] path_lookupat+0x2eb/0x4c0 [ 50.698317][ T3667] filename_lookup+0x18f/0x390 [ 50.698340][ T3667] do_readlinkat+0x74/0x2f0 [ 50.698364][ T3667] __x64_sys_readlink+0x47/0x60 [ 50.698390][ T3667] x64_sys_call+0x1d41/0x2550 [ 50.698417][ T3667] do_syscall_64+0x112/0x360 [ 50.698444][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.698462][ T3667] [ 50.698466][ T3667] value changed: 0x00300000 -> 0x00040040 [ 50.698477][ T3667] [ 50.698481][ T3667] Reported by Kernel Concurrency Sanitizer on: [ 50.698491][ T3667] CPU: 1 UID: 0 PID: 3667 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 50.698518][ T3667] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 50.698530][ T3667] ================================================================== [ 50.854934][ T29] kauditd_printk_skb: 11 callbacks suppressed [ 50.854955][ T29] audit: type=1400 audit(1791771701.702:183): avc: denied { write } for pid=3668 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 [ 50.941118][ T29] audit: type=1400 audit(1791771701.792:184): avc: denied { write } for pid=3679 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 [ 51.090419][ T3667] ================================================================== [ 51.090455][ T3667] BUG: KCSAN: data-race in dont_mount / path_lookupat [ 51.090480][ T3667] [ 51.090486][ T3667] read-write to 0xffff888106ecd540 of 4 bytes by task 3663 on cpu 0: [ 51.090503][ T3667] dont_mount+0x2a/0x40 [ 51.090518][ T3667] vfs_unlink+0x202/0x490 [ 51.090534][ T3667] filename_unlinkat+0x1dc/0x410 [ 51.090550][ T3667] __se_sys_unlink+0x2b/0xe0 [ 51.090567][ T3667] __x64_sys_unlink+0x1f/0x30 [ 51.090585][ T3667] x64_sys_call+0x18ee/0x2550 [ 51.090612][ T3667] do_syscall_64+0x112/0x360 [ 51.090637][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.090655][ T3667] [ 51.090660][ T3667] read to 0xffff888106ecd540 of 4 bytes by task 3667 on cpu 1: [ 51.090674][ T3667] path_lookupat+0x19b/0x4c0 [ 51.090700][ T3667] filename_lookup+0x18f/0x390 [ 51.090723][ T3667] do_readlinkat+0x74/0x2f0 [ 51.090746][ T3667] __x64_sys_readlink+0x47/0x60 [ 51.090767][ T3667] x64_sys_call+0x1d41/0x2550 [ 51.090793][ T3667] do_syscall_64+0x112/0x360 [ 51.090819][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.090842][ T3667] [ 51.090846][ T3667] value changed: 0x00340040 -> 0x00040040 [ 51.090857][ T3667] [ 51.090860][ T3667] Reported by Kernel Concurrency Sanitizer on: [ 51.090869][ T3667] CPU: 1 UID: 0 PID: 3667 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 51.090892][ T3667] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 51.090903][ T3667] ================================================================== [ 51.280755][ T29] audit: type=1400 audit(1791771702.132:185): avc: denied { write } for pid=3682 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 [ 51.369342][ T29] audit: type=1400 audit(1791771702.212:186): avc: denied { write } for pid=3693 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 [ 51.446631][ T3666] ================================================================== [ 51.446666][ T3666] BUG: KCSAN: data-race in __d_instantiate / lookup_fast [ 51.446705][ T3666] [ 51.446711][ T3666] read-write to 0xffff888106ed06c0 of 4 bytes by task 3663 on cpu 0: [ 51.446729][ T3666] __d_instantiate+0x2a8/0x390 [ 51.446757][ T3666] d_instantiate_new+0x68/0xf0 [ 51.446785][ T3666] ext4_add_nondir+0x187/0x1b0 [ 51.446807][ T3666] ext4_symlink+0x58f/0x660 [ 51.446829][ T3666] vfs_symlink+0xfd/0x220 [ 51.446849][ T3666] filename_symlinkat+0xe8/0x2b0 [ 51.446871][ T3666] __se_sys_symlink+0x42/0x1b0 [ 51.446891][ T3666] __x64_sys_symlink+0x31/0x40 [ 51.446912][ T3666] x64_sys_call+0x211f/0x2550 [ 51.446939][ T3666] do_syscall_64+0x112/0x360 [ 51.446965][ T3666] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.446988][ T3666] [ 51.446994][ T3666] read to 0xffff888106ed06c0 of 4 bytes by task 3666 on cpu 1: [ 51.447012][ T3666] lookup_fast+0xf1/0x320 [ 51.447039][ T3666] path_lookupat+0x120/0x4c0 [ 51.447062][ T3666] filename_lookup+0x18f/0x390 [ 51.447083][ T3666] do_readlinkat+0x74/0x2f0 [ 51.447105][ T3666] __x64_sys_readlink+0x47/0x60 [ 51.447130][ T3666] x64_sys_call+0x1d41/0x2550 [ 51.447156][ T3666] do_syscall_64+0x112/0x360 [ 51.447176][ T3666] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 51.447195][ T3666] [ 51.447198][ T3666] value changed: 0x00040040 -> 0x00340040 [ 51.447208][ T3666] [ 51.447211][ T3666] Reported by Kernel Concurrency Sanitizer on: [ 51.447221][ T3666] CPU: 1 UID: 0 PID: 3666 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 51.447247][ T3666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 51.447260][ T3666] ================================================================== [ 51.712682][ T29] audit: type=1400 audit(1791771702.562:187): avc: denied { write } for pid=3696 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 [ 51.765738][ T29] audit: type=1400 audit(1791771702.612:188): avc: denied { write } for pid=3707 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 [ 51.994009][ T29] audit: type=1400 audit(1791771702.842:189): avc: denied { write } for pid=3710 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 [ 52.047802][ T29] audit: type=1400 audit(1791771702.892:190): avc: denied { write } for pid=3721 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 [ 52.223265][ T3667] ================================================================== [ 52.223292][ T3667] BUG: KCSAN: data-race in dont_mount / step_into_slowpath [ 52.223319][ T3667] [ 52.223324][ T3667] read-write to 0xffff88810598f000 of 4 bytes by task 3663 on cpu 0: [ 52.223343][ T3667] dont_mount+0x2a/0x40 [ 52.223362][ T3667] vfs_unlink+0x202/0x490 [ 52.223381][ T3667] filename_unlinkat+0x1dc/0x410 [ 52.223403][ T3667] __se_sys_unlink+0x2b/0xe0 [ 52.223423][ T3667] __x64_sys_unlink+0x1f/0x30 [ 52.223444][ T3667] x64_sys_call+0x18ee/0x2550 [ 52.223471][ T3667] do_syscall_64+0x112/0x360 [ 52.223497][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 52.223520][ T3667] [ 52.223525][ T3667] read to 0xffff88810598f000 of 4 bytes by task 3667 on cpu 1: [ 52.223539][ T3667] step_into_slowpath+0x133/0x600 [ 52.223565][ T3667] path_lookupat+0x2eb/0x4c0 [ 52.223591][ T3667] filename_lookup+0x18f/0x390 [ 52.223617][ T3667] do_readlinkat+0x74/0x2f0 [ 52.223645][ T3667] __x64_sys_readlink+0x47/0x60 [ 52.223672][ T3667] x64_sys_call+0x1d41/0x2550 [ 52.223698][ T3667] do_syscall_64+0x112/0x360 [ 52.223719][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 52.223737][ T3667] [ 52.223740][ T3667] value changed: 0x00340000 -> 0x00040040 [ 52.223750][ T3667] [ 52.223753][ T3667] Reported by Kernel Concurrency Sanitizer on: [ 52.223762][ T3667] CPU: 1 UID: 0 PID: 3667 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 52.223789][ T3667] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 52.223800][ T3667] ================================================================== [ 52.318016][ T29] audit: type=1400 audit(1791771703.162:191): avc: denied { write } for pid=3724 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 [ 52.411841][ T29] audit: type=1400 audit(1791771703.252:192): avc: denied { write } for pid=3735 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 [ 53.075856][ T3664] ================================================================== [ 53.075894][ T3664] BUG: KCSAN: data-race in __d_instantiate / path_lookupat [ 53.075936][ T3664] [ 53.075942][ T3664] write to 0xffff8881059839f0 of 8 bytes by task 3663 on cpu 0: [ 53.075956][ T3664] __d_instantiate+0x1db/0x390 [ 53.075986][ T3664] d_instantiate_new+0x68/0xf0 [ 53.076024][ T3664] ext4_add_nondir+0x187/0x1b0 [ 53.076050][ T3664] ext4_symlink+0x58f/0x660 [ 53.076072][ T3664] vfs_symlink+0xfd/0x220 [ 53.076092][ T3664] filename_symlinkat+0xe8/0x2b0 [ 53.076115][ T3664] __se_sys_symlink+0x42/0x1b0 [ 53.076138][ T3664] __x64_sys_symlink+0x31/0x40 [ 53.076160][ T3664] x64_sys_call+0x211f/0x2550 [ 53.076187][ T3664] do_syscall_64+0x112/0x360 [ 53.076212][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 53.076231][ T3664] [ 53.076238][ T3664] read to 0xffff8881059839f0 of 8 bytes by task 3664 on cpu 1: [ 53.076255][ T3664] path_lookupat+0x1eb/0x4c0 [ 53.076282][ T3664] filename_lookup+0x18f/0x390 [ 53.076308][ T3664] do_readlinkat+0x74/0x2f0 [ 53.076332][ T3664] __x64_sys_readlink+0x47/0x60 [ 53.076358][ T3664] x64_sys_call+0x1d41/0x2550 [ 53.076386][ T3664] do_syscall_64+0x112/0x360 [ 53.076412][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 53.076435][ T3664] [ 53.076439][ T3664] value changed: 0x0000000000000000 -> 0xffff88811b8104f8 [ 53.076450][ T3664] [ 53.076453][ T3664] Reported by Kernel Concurrency Sanitizer on: [ 53.076463][ T3664] CPU: 1 UID: 0 PID: 3664 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 53.076491][ T3664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 53.076502][ T3664] ================================================================== [ 53.791689][ T3665] ================================================================== [ 53.791727][ T3665] BUG: KCSAN: data-race in __d_instantiate / path_lookupat [ 53.791768][ T3665] [ 53.791774][ T3665] read-write to 0xffff888105985000 of 4 bytes by task 3663 on cpu 0: [ 53.791798][ T3665] __d_instantiate+0x2a8/0x390 [ 53.791828][ T3665] d_instantiate_new+0x68/0xf0 [ 53.791858][ T3665] ext4_add_nondir+0x187/0x1b0 [ 53.791878][ T3665] ext4_symlink+0x58f/0x660 [ 53.791901][ T3665] vfs_symlink+0xfd/0x220 [ 53.791917][ T3665] filename_symlinkat+0xe8/0x2b0 [ 53.791935][ T3665] __se_sys_symlink+0x42/0x1b0 [ 53.791955][ T3665] __x64_sys_symlink+0x31/0x40 [ 53.791977][ T3665] x64_sys_call+0x211f/0x2550 [ 53.792005][ T3665] do_syscall_64+0x112/0x360 [ 53.792032][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 53.792054][ T3665] [ 53.792060][ T3665] read to 0xffff888105985000 of 4 bytes by task 3665 on cpu 1: [ 53.792077][ T3665] path_lookupat+0x19b/0x4c0 [ 53.792103][ T3665] filename_lookup+0x18f/0x390 [ 53.792130][ T3665] do_readlinkat+0x74/0x2f0 [ 53.792164][ T3665] __x64_sys_readlink+0x47/0x60 [ 53.792189][ T3665] x64_sys_call+0x1d41/0x2550 [ 53.792216][ T3665] do_syscall_64+0x112/0x360 [ 53.792237][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 53.792255][ T3665] [ 53.792259][ T3665] value changed: 0x00040040 -> 0x00340040 [ 53.792272][ T3665] [ 53.792276][ T3665] Reported by Kernel Concurrency Sanitizer on: [ 53.792287][ T3665] CPU: 1 UID: 0 PID: 3665 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 53.792315][ T3665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 53.792328][ T3665] ================================================================== [ 54.060193][ T3664] ================================================================== [ 54.060225][ T3664] BUG: KCSAN: data-race in dont_mount / lookup_fast [ 54.060254][ T3664] [ 54.060261][ T3664] read-write to 0xffff888105942900 of 4 bytes by task 3663 on cpu 0: [ 54.060279][ T3664] dont_mount+0x2a/0x40 [ 54.060298][ T3664] vfs_unlink+0x202/0x490 [ 54.060318][ T3664] filename_unlinkat+0x1dc/0x410 [ 54.060337][ T3664] __se_sys_unlink+0x2b/0xe0 [ 54.060353][ T3664] __x64_sys_unlink+0x1f/0x30 [ 54.060370][ T3664] x64_sys_call+0x18ee/0x2550 [ 54.060393][ T3664] do_syscall_64+0x112/0x360 [ 54.060418][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.060441][ T3664] [ 54.060447][ T3664] read to 0xffff888105942900 of 4 bytes by task 3664 on cpu 1: [ 54.060464][ T3664] lookup_fast+0xf1/0x320 [ 54.060488][ T3664] path_lookupat+0x120/0x4c0 [ 54.060509][ T3664] filename_lookup+0x18f/0x390 [ 54.060530][ T3664] do_readlinkat+0x74/0x2f0 [ 54.060558][ T3664] __x64_sys_readlink+0x47/0x60 [ 54.060585][ T3664] x64_sys_call+0x1d41/0x2550 [ 54.060612][ T3664] do_syscall_64+0x112/0x360 [ 54.060637][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.060665][ T3664] [ 54.060668][ T3664] value changed: 0x00340040 -> 0x00040040 [ 54.060678][ T3664] [ 54.060681][ T3664] Reported by Kernel Concurrency Sanitizer on: [ 54.060691][ T3664] CPU: 1 UID: 0 PID: 3664 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 54.060713][ T3664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 54.060726][ T3664] ================================================================== [ 54.249995][ T3666] ================================================================== [ 54.250027][ T3666] BUG: KCSAN: data-race in dont_mount / step_into_slowpath [ 54.250056][ T3666] [ 54.250063][ T3666] read-write to 0xffff888106ed99c0 of 4 bytes by task 3663 on cpu 0: [ 54.250078][ T3666] dont_mount+0x2a/0x40 [ 54.250093][ T3666] vfs_unlink+0x202/0x490 [ 54.250109][ T3666] filename_unlinkat+0x1dc/0x410 [ 54.250126][ T3666] __se_sys_unlink+0x2b/0xe0 [ 54.250143][ T3666] __x64_sys_unlink+0x1f/0x30 [ 54.250163][ T3666] x64_sys_call+0x18ee/0x2550 [ 54.250191][ T3666] do_syscall_64+0x112/0x360 [ 54.250217][ T3666] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.250238][ T3666] [ 54.250243][ T3666] read to 0xffff888106ed99c0 of 4 bytes by task 3666 on cpu 1: [ 54.250257][ T3666] step_into_slowpath+0xea/0x600 [ 54.250281][ T3666] path_lookupat+0x2eb/0x4c0 [ 54.250306][ T3666] filename_lookup+0x18f/0x390 [ 54.250339][ T3666] do_readlinkat+0x74/0x2f0 [ 54.250368][ T3666] __x64_sys_readlink+0x47/0x60 [ 54.250393][ T3666] x64_sys_call+0x1d41/0x2550 [ 54.250415][ T3666] do_syscall_64+0x112/0x360 [ 54.250436][ T3666] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.250458][ T3666] [ 54.250462][ T3666] value changed: 0x00340040 -> 0x00040040 [ 54.250474][ T3666] [ 54.250478][ T3666] Reported by Kernel Concurrency Sanitizer on: [ 54.250490][ T3666] CPU: 1 UID: 0 PID: 3666 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 54.250517][ T3666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 54.250531][ T3666] ================================================================== [ 54.762474][ T3664] ================================================================== [ 54.762507][ T3664] BUG: KCSAN: data-race in __d_instantiate / lookup_fast [ 54.762547][ T3664] [ 54.762554][ T3664] read-write to 0xffff888106f95240 of 4 bytes by task 3663 on cpu 0: [ 54.762571][ T3664] __d_instantiate+0x2a8/0x390 [ 54.762601][ T3664] d_instantiate_new+0x68/0xf0 [ 54.762626][ T3664] ext4_add_nondir+0x187/0x1b0 [ 54.762647][ T3664] ext4_symlink+0x58f/0x660 [ 54.762667][ T3664] vfs_symlink+0xfd/0x220 [ 54.762688][ T3664] filename_symlinkat+0xe8/0x2b0 [ 54.762709][ T3664] __se_sys_symlink+0x42/0x1b0 [ 54.762727][ T3664] __x64_sys_symlink+0x31/0x40 [ 54.762745][ T3664] x64_sys_call+0x211f/0x2550 [ 54.762768][ T3664] do_syscall_64+0x112/0x360 [ 54.762794][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.762815][ T3664] [ 54.762821][ T3664] read to 0xffff888106f95240 of 4 bytes by task 3664 on cpu 1: [ 54.762845][ T3664] lookup_fast+0xf1/0x320 [ 54.762873][ T3664] path_lookupat+0x120/0x4c0 [ 54.762898][ T3664] filename_lookup+0x18f/0x390 [ 54.762919][ T3664] do_readlinkat+0x74/0x2f0 [ 54.762943][ T3664] __x64_sys_readlink+0x47/0x60 [ 54.762969][ T3664] x64_sys_call+0x1d41/0x2550 [ 54.762996][ T3664] do_syscall_64+0x112/0x360 [ 54.763021][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.763044][ T3664] [ 54.763048][ T3664] value changed: 0x00000000 -> 0x00340000 [ 54.763059][ T3664] [ 54.763062][ T3664] Reported by Kernel Concurrency Sanitizer on: [ 54.763073][ T3664] CPU: 1 UID: 0 PID: 3664 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 54.763101][ T3664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 54.763114][ T3664] ================================================================== [ 55.059253][ T3667] ================================================================== [ 55.059292][ T3667] BUG: KCSAN: data-race in dentry_unlink_inode / step_into_slowpath [ 55.059334][ T3667] [ 55.059340][ T3667] write to 0xffff888105abe7b0 of 8 bytes by task 3663 on cpu 0: [ 55.059357][ T3667] dentry_unlink_inode+0x65/0x260 [ 55.059391][ T3667] d_delete+0x164/0x180 [ 55.059421][ T3667] d_delete_notify+0x32/0x100 [ 55.059441][ T3667] vfs_unlink+0x287/0x490 [ 55.059459][ T3667] filename_unlinkat+0x1dc/0x410 [ 55.059476][ T3667] __se_sys_unlink+0x2b/0xe0 [ 55.059492][ T3667] __x64_sys_unlink+0x1f/0x30 [ 55.059511][ T3667] x64_sys_call+0x18ee/0x2550 [ 55.059534][ T3667] do_syscall_64+0x112/0x360 [ 55.059558][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.059577][ T3667] [ 55.059583][ T3667] read to 0xffff888105abe7b0 of 8 bytes by task 3667 on cpu 1: [ 55.059600][ T3667] step_into_slowpath+0x127/0x600 [ 55.059628][ T3667] path_lookupat+0x2eb/0x4c0 [ 55.059654][ T3667] filename_lookup+0x18f/0x390 [ 55.059675][ T3667] do_readlinkat+0x74/0x2f0 [ 55.059698][ T3667] __x64_sys_readlink+0x47/0x60 [ 55.059723][ T3667] x64_sys_call+0x1d41/0x2550 [ 55.059750][ T3667] do_syscall_64+0x112/0x360 [ 55.059775][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.059795][ T3667] [ 55.059798][ T3667] value changed: 0xffff88811b8231a8 -> 0x0000000000000000 [ 55.059808][ T3667] [ 55.059811][ T3667] Reported by Kernel Concurrency Sanitizer on: [ 55.059821][ T3667] CPU: 1 UID: 0 PID: 3667 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 55.059843][ T3667] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 55.059866][ T3667] ================================================================== [ 55.472454][ T3664] ================================================================== [ 55.472485][ T3664] BUG: KCSAN: data-race in dont_mount / step_into_slowpath [ 55.472517][ T3664] [ 55.472524][ T3664] read-write to 0xffff888106ec96c0 of 4 bytes by task 3663 on cpu 0: [ 55.472542][ T3664] dont_mount+0x2a/0x40 [ 55.472558][ T3664] vfs_unlink+0x202/0x490 [ 55.472574][ T3664] filename_unlinkat+0x1dc/0x410 [ 55.472591][ T3664] __se_sys_unlink+0x2b/0xe0 [ 55.472608][ T3664] __x64_sys_unlink+0x1f/0x30 [ 55.472625][ T3664] x64_sys_call+0x18ee/0x2550 [ 55.472653][ T3664] do_syscall_64+0x112/0x360 [ 55.472680][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.472703][ T3664] [ 55.472709][ T3664] read to 0xffff888106ec96c0 of 4 bytes by task 3664 on cpu 1: [ 55.472726][ T3664] step_into_slowpath+0x133/0x600 [ 55.472755][ T3664] path_lookupat+0x2eb/0x4c0 [ 55.472776][ T3664] filename_lookup+0x18f/0x390 [ 55.472798][ T3664] do_readlinkat+0x74/0x2f0 [ 55.472820][ T3664] __x64_sys_readlink+0x47/0x60 [ 55.472846][ T3664] x64_sys_call+0x1d41/0x2550 [ 55.472873][ T3664] do_syscall_64+0x112/0x360 [ 55.472898][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.472920][ T3664] [ 55.472924][ T3664] value changed: 0x00340040 -> 0x00040040 [ 55.472935][ T3664] [ 55.472938][ T3664] Reported by Kernel Concurrency Sanitizer on: [ 55.472947][ T3664] CPU: 1 UID: 0 PID: 3664 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 55.472972][ T3664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 55.472985][ T3664] ================================================================== [ 55.675320][ T3665] ================================================================== [ 55.675349][ T3665] BUG: KCSAN: data-race in dont_mount / path_lookupat [ 55.675376][ T3665] [ 55.675382][ T3665] read-write to 0xffff888106ed06c0 of 4 bytes by task 3663 on cpu 0: [ 55.675400][ T3665] dont_mount+0x2a/0x40 [ 55.675419][ T3665] vfs_unlink+0x202/0x490 [ 55.675439][ T3665] filename_unlinkat+0x1dc/0x410 [ 55.675460][ T3665] __se_sys_unlink+0x2b/0xe0 [ 55.675478][ T3665] __x64_sys_unlink+0x1f/0x30 [ 55.675498][ T3665] x64_sys_call+0x18ee/0x2550 [ 55.675525][ T3665] do_syscall_64+0x112/0x360 [ 55.675551][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.675575][ T3665] [ 55.675581][ T3665] read to 0xffff888106ed06c0 of 4 bytes by task 3665 on cpu 1: [ 55.675596][ T3665] path_lookupat+0x19b/0x4c0 [ 55.675617][ T3665] filename_lookup+0x18f/0x390 [ 55.675643][ T3665] do_readlinkat+0x74/0x2f0 [ 55.675672][ T3665] __x64_sys_readlink+0x47/0x60 [ 55.675704][ T3665] x64_sys_call+0x1d41/0x2550 [ 55.675732][ T3665] do_syscall_64+0x112/0x360 [ 55.675753][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.675771][ T3665] [ 55.675774][ T3665] value changed: 0x00340040 -> 0x00040040 [ 55.675784][ T3665] [ 55.675787][ T3665] Reported by Kernel Concurrency Sanitizer on: [ 55.675799][ T3665] CPU: 1 UID: 0 PID: 3665 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 55.675825][ T3665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 55.675836][ T3665] ================================================================== [ 56.145983][ T3667] ================================================================== [ 56.146021][ T3667] BUG: KCSAN: data-race in d_delete / step_into_slowpath [ 56.146058][ T3667] [ 56.146063][ T3667] read-write to 0xffff888106ed9d80 of 4 bytes by task 3663 on cpu 0: [ 56.146078][ T3667] d_delete+0x15a/0x180 [ 56.146106][ T3667] d_delete_notify+0x32/0x100 [ 56.146133][ T3667] vfs_unlink+0x287/0x490 [ 56.146151][ T3667] filename_unlinkat+0x1dc/0x410 [ 56.146168][ T3667] __se_sys_unlink+0x2b/0xe0 [ 56.146184][ T3667] __x64_sys_unlink+0x1f/0x30 [ 56.146203][ T3667] x64_sys_call+0x18ee/0x2550 [ 56.146230][ T3667] do_syscall_64+0x112/0x360 [ 56.146256][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 56.146275][ T3667] [ 56.146279][ T3667] read to 0xffff888106ed9d80 of 4 bytes by task 3667 on cpu 1: [ 56.146293][ T3667] step_into_slowpath+0xea/0x600 [ 56.146321][ T3667] path_lookupat+0x2eb/0x4c0 [ 56.146346][ T3667] filename_lookup+0x18f/0x390 [ 56.146373][ T3667] do_readlinkat+0x74/0x2f0 [ 56.146401][ T3667] __x64_sys_readlink+0x47/0x60 [ 56.146428][ T3667] x64_sys_call+0x1d41/0x2550 [ 56.146450][ T3667] do_syscall_64+0x112/0x360 [ 56.146471][ T3667] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 56.146489][ T3667] [ 56.146493][ T3667] value changed: 0x00340140 -> 0x00040040 [ 56.146506][ T3667] [ 56.146510][ T3667] Reported by Kernel Concurrency Sanitizer on: [ 56.146522][ T3667] CPU: 1 UID: 0 PID: 3667 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 56.146547][ T3667] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 56.146560][ T3667] ================================================================== [ 56.425280][ T3664] ================================================================== [ 56.425316][ T3664] BUG: KCSAN: data-race in __d_instantiate / path_lookupat [ 56.425352][ T3664] [ 56.425357][ T3664] write to 0xffff888106f99870 of 8 bytes by task 3663 on cpu 0: [ 56.425372][ T3664] __d_instantiate+0x1db/0x390 [ 56.425401][ T3664] d_instantiate_new+0x68/0xf0 [ 56.425432][ T3664] ext4_add_nondir+0x187/0x1b0 [ 56.425456][ T3664] ext4_symlink+0x58f/0x660 [ 56.425477][ T3664] vfs_symlink+0xfd/0x220 [ 56.425499][ T3664] filename_symlinkat+0xe8/0x2b0 [ 56.425521][ T3664] __se_sys_symlink+0x42/0x1b0 [ 56.425543][ T3664] __x64_sys_symlink+0x31/0x40 [ 56.425568][ T3664] x64_sys_call+0x211f/0x2550 [ 56.425595][ T3664] do_syscall_64+0x112/0x360 [ 56.425617][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 56.425639][ T3664] [ 56.425645][ T3664] read to 0xffff888106f99870 of 8 bytes by task 3664 on cpu 1: [ 56.425663][ T3664] path_lookupat+0x1eb/0x4c0 [ 56.425689][ T3664] filename_lookup+0x18f/0x390 [ 56.425711][ T3664] do_readlinkat+0x74/0x2f0 [ 56.425739][ T3664] __x64_sys_readlink+0x47/0x60 [ 56.425765][ T3664] x64_sys_call+0x1d41/0x2550 [ 56.425792][ T3664] do_syscall_64+0x112/0x360 [ 56.425816][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 56.425838][ T3664] [ 56.425843][ T3664] value changed: 0x0000000000000000 -> 0xffff88811b8135b8 [ 56.425855][ T3664] [ 56.425860][ T3664] Reported by Kernel Concurrency Sanitizer on: [ 56.425871][ T3664] CPU: 1 UID: 0 PID: 3664 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 56.425899][ T3664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 56.425912][ T3664] ================================================================== [ 56.928242][ T3666] ================================================================== [ 56.928282][ T3666] BUG: KCSAN: data-race in __d_instantiate / path_lookupat [ 56.928337][ T3666] [ 56.928343][ T3666] read-write to 0xffff888105940540 of 4 bytes by task 3663 on cpu 0: [ 56.928359][ T3666] __d_instantiate+0x2a8/0x390 [ 56.928384][ T3666] d_instantiate_new+0x68/0xf0 [ 56.928408][ T3666] ext4_add_nondir+0x187/0x1b0 [ 56.928435][ T3666] ext4_symlink+0x58f/0x660 [ 56.928517][ T3666] vfs_symlink+0xfd/0x220 [ 56.928534][ T3666] filename_symlinkat+0xe8/0x2b0 [ 56.928553][ T3666] __se_sys_symlink+0x42/0x1b0 [ 56.928571][ T3666] __x64_sys_symlink+0x31/0x40 [ 56.928590][ T3666] x64_sys_call+0x211f/0x2550 [ 56.928616][ T3666] do_syscall_64+0x112/0x360 [ 56.928753][ T3666] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 56.928780][ T3666] [ 56.928785][ T3666] read to 0xffff888105940540 of 4 bytes by task 3666 on cpu 1: [ 56.928800][ T3666] path_lookupat+0x19b/0x4c0 [ 56.928823][ T3666] filename_lookup+0x18f/0x390 [ 56.928849][ T3666] do_readlinkat+0x74/0x2f0 [ 56.928880][ T3666] __x64_sys_readlink+0x47/0x60 [ 56.928907][ T3666] x64_sys_call+0x1d41/0x2550 [ 56.928941][ T3666] do_syscall_64+0x112/0x360 [ 56.928966][ T3666] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 56.928986][ T3666] [ 56.928991][ T3666] value changed: 0x00040040 -> 0x00340040 [ 56.929004][ T3666] [ 56.929009][ T3666] Reported by Kernel Concurrency Sanitizer on: [ 56.929021][ T3666] CPU: 1 UID: 0 PID: 3666 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 56.929052][ T3666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 56.929066][ T3666] ================================================================== [ 57.251704][ T3665] ================================================================== [ 57.251742][ T3665] BUG: KCSAN: data-race in d_delete / path_lookupat [ 57.251784][ T3665] [ 57.251789][ T3665] read-write to 0xffff888105abe780 of 4 bytes by task 3663 on cpu 0: [ 57.251808][ T3665] d_delete+0x15a/0x180 [ 57.251838][ T3665] d_delete_notify+0x32/0x100 [ 57.251859][ T3665] vfs_unlink+0x287/0x490 [ 57.251878][ T3665] filename_unlinkat+0x1dc/0x410 [ 57.251899][ T3665] __se_sys_unlink+0x2b/0xe0 [ 57.251916][ T3665] __x64_sys_unlink+0x1f/0x30 [ 57.251933][ T3665] x64_sys_call+0x18ee/0x2550 [ 57.251961][ T3665] do_syscall_64+0x112/0x360 [ 57.251983][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 57.252002][ T3665] [ 57.252006][ T3665] read to 0xffff888105abe780 of 4 bytes by task 3665 on cpu 1: [ 57.252020][ T3665] path_lookupat+0x19b/0x4c0 [ 57.252042][ T3665] filename_lookup+0x18f/0x390 [ 57.252069][ T3665] do_readlinkat+0x74/0x2f0 [ 57.252097][ T3665] __x64_sys_readlink+0x47/0x60 [ 57.252122][ T3665] x64_sys_call+0x1d41/0x2550 [ 57.252149][ T3665] do_syscall_64+0x112/0x360 [ 57.252171][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 57.252194][ T3665] [ 57.252198][ T3665] value changed: 0x00340140 -> 0x00040040 [ 57.252211][ T3665] [ 57.252215][ T3665] Reported by Kernel Concurrency Sanitizer on: [ 57.252227][ T3665] CPU: 1 UID: 0 PID: 3665 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 57.252253][ T3665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 57.252264][ T3665] ================================================================== [ 57.497813][ T3664] ================================================================== [ 57.497845][ T3664] BUG: KCSAN: data-race in dont_mount / lookup_fast [ 57.497872][ T3664] [ 57.497877][ T3664] read-write to 0xffff8881059883c0 of 4 bytes by task 3663 on cpu 0: [ 57.497895][ T3664] dont_mount+0x2a/0x40 [ 57.497914][ T3664] vfs_unlink+0x202/0x490 [ 57.497933][ T3664] filename_unlinkat+0x1dc/0x410 [ 57.497954][ T3664] __se_sys_unlink+0x2b/0xe0 [ 57.497971][ T3664] __x64_sys_unlink+0x1f/0x30 [ 57.497991][ T3664] x64_sys_call+0x18ee/0x2550 [ 57.498014][ T3664] do_syscall_64+0x112/0x360 [ 57.498036][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 57.498055][ T3664] [ 57.498061][ T3664] read to 0xffff8881059883c0 of 4 bytes by task 3664 on cpu 1: [ 57.498079][ T3664] lookup_fast+0xf1/0x320 [ 57.498106][ T3664] path_lookupat+0x120/0x4c0 [ 57.498130][ T3664] filename_lookup+0x18f/0x390 [ 57.498154][ T3664] do_readlinkat+0x74/0x2f0 [ 57.498182][ T3664] __x64_sys_readlink+0x47/0x60 [ 57.498208][ T3664] x64_sys_call+0x1d41/0x2550 [ 57.498235][ T3664] do_syscall_64+0x112/0x360 [ 57.498260][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 57.498284][ T3664] [ 57.498289][ T3664] value changed: 0x00340040 -> 0x00040040 [ 57.498301][ T3664] [ 57.498305][ T3664] Reported by Kernel Concurrency Sanitizer on: [ 57.498317][ T3664] CPU: 1 UID: 0 PID: 3664 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 57.498340][ T3664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 57.498351][ T3664] ================================================================== [ 57.809237][ T3665] ================================================================== [ 57.809270][ T3665] BUG: KCSAN: data-race in __d_instantiate / lookup_fast [ 57.809313][ T3665] [ 57.809320][ T3665] read-write to 0xffff88810598c540 of 4 bytes by task 3663 on cpu 0: [ 57.809338][ T3665] __d_instantiate+0x2a8/0x390 [ 57.809365][ T3665] d_instantiate_new+0x68/0xf0 [ 57.809390][ T3665] ext4_add_nondir+0x187/0x1b0 [ 57.809411][ T3665] ext4_symlink+0x58f/0x660 [ 57.809431][ T3665] vfs_symlink+0xfd/0x220 [ 57.809452][ T3665] filename_symlinkat+0xe8/0x2b0 [ 57.809474][ T3665] __se_sys_symlink+0x42/0x1b0 [ 57.809496][ T3665] __x64_sys_symlink+0x31/0x40 [ 57.809519][ T3665] x64_sys_call+0x211f/0x2550 [ 57.809554][ T3665] do_syscall_64+0x112/0x360 [ 57.809576][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 57.809595][ T3665] [ 57.809601][ T3665] read to 0xffff88810598c540 of 4 bytes by task 3665 on cpu 1: [ 57.809619][ T3665] lookup_fast+0xf1/0x320 [ 57.809647][ T3665] path_lookupat+0x120/0x4c0 [ 57.809673][ T3665] filename_lookup+0x18f/0x390 [ 57.809699][ T3665] do_readlinkat+0x74/0x2f0 [ 57.809726][ T3665] __x64_sys_readlink+0x47/0x60 [ 57.809751][ T3665] x64_sys_call+0x1d41/0x2550 [ 57.809777][ T3665] do_syscall_64+0x112/0x360 [ 57.809803][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 57.809826][ T3665] [ 57.809831][ T3665] value changed: 0x00040040 -> 0x00340040 [ 57.809843][ T3665] [ 57.809847][ T3665] Reported by Kernel Concurrency Sanitizer on: [ 57.809858][ T3665] CPU: 1 UID: 0 PID: 3665 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 57.809881][ T3665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 57.809892][ T3665] ================================================================== [ 58.605811][ T3665] ================================================================== [ 58.605852][ T3665] BUG: KCSAN: data-race in dentry_unlink_inode / step_into_slowpath [ 58.605892][ T3665] [ 58.605897][ T3665] write to 0xffff888106f9f1b0 of 8 bytes by task 3663 on cpu 0: [ 58.605911][ T3665] dentry_unlink_inode+0x65/0x260 [ 58.605938][ T3665] d_delete+0x164/0x180 [ 58.605967][ T3665] d_delete_notify+0x32/0x100 [ 58.605987][ T3665] vfs_unlink+0x287/0x490 [ 58.606004][ T3665] filename_unlinkat+0x1dc/0x410 [ 58.606021][ T3665] __se_sys_unlink+0x2b/0xe0 [ 58.606038][ T3665] __x64_sys_unlink+0x1f/0x30 [ 58.606054][ T3665] x64_sys_call+0x18ee/0x2550 [ 58.606082][ T3665] do_syscall_64+0x112/0x360 [ 58.606108][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.606131][ T3665] [ 58.606137][ T3665] read to 0xffff888106f9f1b0 of 8 bytes by task 3665 on cpu 1: [ 58.606154][ T3665] step_into_slowpath+0x127/0x600 [ 58.606180][ T3665] path_lookupat+0x2eb/0x4c0 [ 58.606206][ T3665] filename_lookup+0x18f/0x390 [ 58.606232][ T3665] do_readlinkat+0x74/0x2f0 [ 58.606256][ T3665] __x64_sys_readlink+0x47/0x60 [ 58.606277][ T3665] x64_sys_call+0x1d41/0x2550 [ 58.606299][ T3665] do_syscall_64+0x112/0x360 [ 58.606324][ T3665] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.606343][ T3665] [ 58.606346][ T3665] value changed: 0xffff88811b830908 -> 0x0000000000000000 [ 58.606356][ T3665] [ 58.606360][ T3665] Reported by Kernel Concurrency Sanitizer on: [ 58.606370][ T3665] CPU: 1 UID: 0 PID: 3665 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 58.606398][ T3665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 58.606410][ T3665] ================================================================== [ 58.900941][ T3664] ================================================================== [ 58.900972][ T3664] BUG: KCSAN: data-race in dont_mount / step_into_slowpath [ 58.901005][ T3664] [ 58.901011][ T3664] read-write to 0xffff888106ed0a80 of 4 bytes by task 3663 on cpu 0: [ 58.901027][ T3664] dont_mount+0x2a/0x40 [ 58.901042][ T3664] vfs_unlink+0x202/0x490 [ 58.901058][ T3664] filename_unlinkat+0x1dc/0x410 [ 58.901075][ T3664] __se_sys_unlink+0x2b/0xe0 [ 58.901090][ T3664] __x64_sys_unlink+0x1f/0x30 [ 58.901106][ T3664] x64_sys_call+0x18ee/0x2550 [ 58.901136][ T3664] do_syscall_64+0x112/0x360 [ 58.901162][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.901181][ T3664] [ 58.901186][ T3664] read to 0xffff888106ed0a80 of 4 bytes by task 3664 on cpu 1: [ 58.901200][ T3664] step_into_slowpath+0xea/0x600 [ 58.901226][ T3664] path_lookupat+0x2eb/0x4c0 [ 58.901250][ T3664] filename_lookup+0x18f/0x390 [ 58.901270][ T3664] do_readlinkat+0x74/0x2f0 [ 58.901293][ T3664] __x64_sys_readlink+0x47/0x60 [ 58.901317][ T3664] x64_sys_call+0x1d41/0x2550 [ 58.901344][ T3664] do_syscall_64+0x112/0x360 [ 58.901368][ T3664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.901390][ T3664] [ 58.901393][ T3664] value changed: 0x00340040 -> 0x00040040 [ 58.901403][ T3664] [ 58.901406][ T3664] Reported by Kernel Concurrency Sanitizer on: [ 58.901418][ T3664] CPU: 1 UID: 0 PID: 3664 Comm: syz-executor100 Not tainted syzkaller #0 PREEMPT(lazy) [ 58.901445][ T3664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 58.901458][ T3664] ================================================================== [*] Stopping threads... [+] Reproducer finished.