================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:1360:19 index -878706688 is out of range for type 'atomic_t[128]' CPU: 0 PID: 15812 Comm: syz-executor.3 Not tainted 6.1.63-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282 diAlloc+0x11f8/0x1530 fs/jfs/jfs_imap.c:1360 ialloc+0x84/0x7c0 fs/jfs/jfs_inode.c:56 jfs_create+0x190/0xa1c fs/jfs/namei.c:92 lookup_open fs/namei.c:3414 [inline] open_last_lookups fs/namei.c:3482 [inline] path_openat+0xeac/0x2548 fs/namei.c:3712 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 ================================================================================ ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline] BUG: KASAN: use-after-free in atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] BUG: KASAN: use-after-free in diAlloc+0x2a8/0x1530 fs/jfs/jfs_imap.c:1360 Read of size 4 at addr ffff000051dd04e0 by task syz-executor.3/15812 CPU: 0 PID: 15812 Comm: syz-executor.3 Not tainted 6.1.63-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189 __kasan_check_read+0x2c/0x3c mm/kasan/shadow.c:31 instrument_atomic_read include/linux/instrumented.h:72 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] diAlloc+0x2a8/0x1530 fs/jfs/jfs_imap.c:1360 ialloc+0x84/0x7c0 fs/jfs/jfs_inode.c:56 jfs_create+0x190/0xa1c fs/jfs/namei.c:92 lookup_open fs/namei.c:3414 [inline] open_last_lookups fs/namei.c:3482 [inline] path_openat+0xeac/0x2548 fs/namei.c:3712 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the physical page: page:00000000ac036436 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x91dd0 flags: 0x1ffc00000000000(node=0|zone=0|lastcpupid=0x7ff) raw: 01ffc00000000000 fffffc0001477408 fffffc0001477408 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000051dd0380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff000051dd0400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff000051dd0480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff000051dd0500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff000051dd0580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:1379:2 index -878706688 is out of range for type 'struct mutex[128]' CPU: 0 PID: 15812 Comm: syz-executor.3 Tainted: G B 6.1.63-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282 diAlloc+0x1298/0x1530 fs/jfs/jfs_imap.c:1379 ialloc+0x84/0x7c0 fs/jfs/jfs_inode.c:56 jfs_create+0x190/0xa1c fs/jfs/namei.c:92 lookup_open fs/namei.c:3414 [inline] open_last_lookups fs/namei.c:3482 [inline] path_openat+0xeac/0x2548 fs/namei.c:3712 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 ================================================================================ Unable to handle kernel paging request at virtual address ffff5ffc6c7a0123 KASAN: maybe wild-memory-access in range [0xfffeffe363d00918-0xfffeffe363d0091f] Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004 CM = 0, WnR = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001b19ba000 [ffff5ffc6c7a0123] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 15812 Comm: syz-executor.3 Tainted: G B 6.1.63-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __mutex_lock_common+0xf4/0x21a0 kernel/locking/mutex.c:582 lr : __mutex_lock_common+0xcc/0x21a0 kernel/locking/mutex.c:580 sp : ffff80002cce71c0 x29: ffff80002cce7340 x28: dfff800000000000 x27: 1ffff00003309cfc x26: ffff80001984e000 x25: ffff70000599ce54 x24: 0000000000000000 x23: 0000000000000000 x22: ffff800009984f88 x21: 0000000000000000 x20: 0000000000000000 x19: fffeffe363d008b8 x18: 1fffe000368ac376 x17: ffff80001581d000 x16: ffff80001213e244 x15: ffff0001b4561bbc x14: ffff0001b4561bb8 x13: 1fffe000368ac376 x12: 0000000000000005 x11: 1ffff0000599ce58 x10: 0000000000000003 x9 : 0000000000000003 x8 : 1fffdffc6c7a0123 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020 x2 : 0000000000000000 x1 : 0000000000000244 x0 : fffeffe363d00918 Call trace: __mutex_lock_common+0xf4/0x21a0 kernel/locking/mutex.c:582 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 diAlloc+0x644/0x1530 fs/jfs/jfs_imap.c:1379 ialloc+0x84/0x7c0 fs/jfs/jfs_inode.c:56 jfs_create+0x190/0xa1c fs/jfs/namei.c:92 lookup_open fs/namei.c:3414 [inline] open_last_lookups fs/namei.c:3482 [inline] path_openat+0xeac/0x2548 fs/namei.c:3712 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: b947e348 35000128 91018260 d343fc08 (387c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: b947e348 ldr w8, [x26, #2016] 4: 35000128 cbnz w8, 0x28 8: 91018260 add x0, x19, #0x60 c: d343fc08 lsr x8, x0, #3 * 10: 387c6908 ldrb w8, [x8, x28] <-- trapping instruction