loop1: detected capacity change from 0 to 32768 ================================================================================ 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: 1 PID: 11724 Comm: syz-executor.1 Not tainted 5.15.139-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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+0x108/0x15c lib/ubsan.c:282 diAlloc+0x11cc/0x14a4 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:3392 [inline] open_last_lookups fs/namei.c:3462 [inline] path_openat+0xec0/0x26f0 fs/namei.c:3669 do_filp_open+0x1a8/0x3b4 fs/namei.c:3699 do_sys_openat2+0x128/0x3d8 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1238 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ================================================================================ ================================================================== BUG: KASAN: wild-memory-access in instrument_atomic_read include/linux/instrumented.h:71 [inline] BUG: KASAN: wild-memory-access in atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] BUG: KASAN: wild-memory-access in diAlloc+0x2a8/0x14a4 fs/jfs/jfs_imap.c:1360 Read of size 4 at addr fffeffffef3964e0 by task syz-executor.1/11724 CPU: 1 PID: 11724 Comm: syz-executor.1 Not tainted 5.15.139-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 __kasan_report mm/kasan/report.c:438 [inline] kasan_report+0x168/0x1e4 mm/kasan/report.c:451 kasan_check_range+0x274/0x2b4 mm/kasan/generic.c:189 __kasan_check_read+0x44/0x54 mm/kasan/shadow.c:31 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] diAlloc+0x2a8/0x14a4 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:3392 [inline] open_last_lookups fs/namei.c:3462 [inline] path_openat+0xec0/0x26f0 fs/namei.c:3669 do_filp_open+0x1a8/0x3b4 fs/namei.c:3699 do_sys_openat2+0x128/0x3d8 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1238 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ================================================================== Unable to handle kernel paging request at virtual address ffff5ffffde72c9c 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=00000001b4946000 [ffff5ffffde72c9c] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 11724 Comm: syz-executor.1 Tainted: G B 5.15.139-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 : atomic_read include/linux/atomic/atomic-instrumented.h:28 [inline] pc : diAlloc+0x2ac/0x14a4 fs/jfs/jfs_imap.c:1360 lr : instrument_atomic_read include/linux/instrumented.h:71 [inline] lr : atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] lr : diAlloc+0x2a8/0x14a4 fs/jfs/jfs_imap.c:1360 sp : ffff8000261e7390 x29: ffff8000261e73e0 x28: 1fffe0001bddd653 x27: ffff0000deeea930 x26: dfff800000000000 x25: 00000002cba00000 x24: fffeffffef3964e0 x23: ffff0000deeeb270 x22: ffff0000deeeb298 x21: 0000000000000000 x20: ffff0000d5f10000 x19: ffff0000deeebbb0 x18: 1fffe000368fe78e x17: 1fffe000368fe78e x16: ffff8000119725c4 x15: ffff8000149bed00 x14: ffff0001b47f3c80 x13: ffffffffffffffff x12: 0000000000040000 x11: 0000000000020fe9 x10: ffff800021139000 x9 : 0000000000000000 x8 : 1fffdffffde72c9c x7 : 0000000000000000 x6 : ffff800008269c1c x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80000819b844 x2 : 0000000000000001 x1 : 0000000000000002 x0 : 0000000000000000 Call trace: atomic_read include/linux/atomic/atomic-instrumented.h:28 [inline] diAlloc+0x2ac/0x14a4 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:3392 [inline] open_last_lookups fs/namei.c:3462 [inline] path_openat+0xec0/0x26f0 fs/namei.c:3669 do_filp_open+0x1a8/0x3b4 fs/namei.c:3699 do_sys_openat2+0x128/0x3d8 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1238 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: 91138118 aa1803e0 97c0d315 d343ff08 (38fa6908) ---[ end trace 03aa9a11f50e1e7f ]--- ---------------- Code disassembly (best guess): 0: 91138118 add x24, x8, #0x4e0 4: aa1803e0 mov x0, x24 8: 97c0d315 bl 0xffffffffff034c5c c: d343ff08 lsr x8, x24, #3 * 10: 38fa6908 ldrsb w8, [x8, x26] <-- trapping instruction