loop3: detected capacity change from 0 to 32768 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2942:16 index 1381 is out of range for type 's8[1365]' (aka 'signed char[1365]') CPU: 0 PID: 20984 Comm: syz-executor.3 Not tainted 6.1.36-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 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 dbFindLeaf+0x2b8/0x3e4 fs/jfs/jfs_dmap.c:2942 dbAllocDmapLev+0xc4/0x3b8 fs/jfs/jfs_dmap.c:1953 dbAllocCtl+0x104/0x840 fs/jfs/jfs_dmap.c:1809 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1350 dbAlloc+0x520/0xb68 fs/jfs/jfs_dmap.c:874 dtSplitUp fs/jfs/jfs_dtree.c:974 [inline] dtInsert+0xab0/0x54f4 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x6bc/0xa0c fs/jfs/namei.c:270 vfs_mkdir+0x334/0x4e4 fs/namei.c:4036 do_mkdirat+0x20c/0x610 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074 __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:581 ================================================================================ ================================================================== BUG: KASAN: slab-out-of-bounds in dbFindLeaf+0x24c/0x3e4 fs/jfs/jfs_dmap.c:2942 Read of size 1 at addr ffff0000ca5e35b6 by task syz-executor.3/20984 CPU: 0 PID: 20984 Comm: syz-executor.3 Not tainted 6.1.36-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 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 __asan_report_load1_noabort+0x2c/0x38 mm/kasan/report_generic.c:348 dbFindLeaf+0x24c/0x3e4 fs/jfs/jfs_dmap.c:2942 dbAllocDmapLev+0xc4/0x3b8 fs/jfs/jfs_dmap.c:1953 dbAllocCtl+0x104/0x840 fs/jfs/jfs_dmap.c:1809 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1350 dbAlloc+0x520/0xb68 fs/jfs/jfs_dmap.c:874 dtSplitUp fs/jfs/jfs_dtree.c:974 [inline] dtInsert+0xab0/0x54f4 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x6bc/0xa0c fs/jfs/namei.c:270 vfs_mkdir+0x334/0x4e4 fs/namei.c:4036 do_mkdirat+0x20c/0x610 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074 __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:581 Allocated by task 4276: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] kmalloc_trace+0x7c/0x94 mm/slab_common.c:1050 kmalloc include/linux/slab.h:553 [inline] kzalloc include/linux/slab.h:689 [inline] ref_tracker_alloc+0x130/0x3dc lib/ref_tracker.c:85 __netdev_tracker_alloc include/linux/netdevice.h:4008 [inline] netdev_hold include/linux/netdevice.h:4037 [inline] qdisc_alloc+0x5a8/0x7dc net/sched/sch_generic.c:974 qdisc_create_dflt+0x70/0x5b0 net/sched/sch_generic.c:996 attach_one_default_qdisc net/sched/sch_generic.c:1159 [inline] netdev_for_each_tx_queue include/linux/netdevice.h:2453 [inline] attach_default_qdiscs net/sched/sch_generic.c:1177 [inline] dev_activate+0x350/0x10bc net/sched/sch_generic.c:1236 __dev_open+0x3a8/0x4fc net/core/dev.c:1441 __dev_change_flags+0x1a8/0x5a0 net/core/dev.c:8550 dev_change_flags+0x80/0x154 net/core/dev.c:8621 do_setlink+0xc70/0x3328 net/core/rtnetlink.c:2788 __rtnl_newlink net/core/rtnetlink.c:3553 [inline] rtnl_newlink+0x13b8/0x1b04 net/core/rtnetlink.c:3600 rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6097 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2524 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6115 netlink_unicast_kernel net/netlink/af_netlink.c:1328 [inline] netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1354 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1902 sock_sendmsg_nosec net/socket.c:716 [inline] sock_sendmsg net/socket.c:736 [inline] __sys_sendto+0x3b4/0x504 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2125 __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:581 The buggy address belongs to the object at ffff0000ca5e3500 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 54 bytes to the right of 128-byte region [ffff0000ca5e3500, ffff0000ca5e3580) The buggy address belongs to the physical page: page:00000000051c6d1c refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000ca5e3000 pfn:0x10a5e3 flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000200 fffffc0003377608 fffffc0003c88a88 ffff0000c0002300 raw: ffff0000ca5e3000 000000000010000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000ca5e3480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000ca5e3500: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000ca5e3580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000ca5e3600: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc ffff0000ca5e3680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:1965:6 index 1431655765 is out of range for type 's8[341]' (aka 'signed char[341]') CPU: 0 PID: 20984 Comm: syz-executor.3 Tainted: G B 6.1.36-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 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 dbAllocDmapLev+0x374/0x3b8 fs/jfs/jfs_dmap.c:1965 dbAllocCtl+0x104/0x840 fs/jfs/jfs_dmap.c:1809 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1350 dbAlloc+0x520/0xb68 fs/jfs/jfs_dmap.c:874 dtSplitUp fs/jfs/jfs_dtree.c:974 [inline] dtInsert+0xab0/0x54f4 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x6bc/0xa0c fs/jfs/namei.c:270 vfs_mkdir+0x334/0x4e4 fs/namei.c:4036 do_mkdirat+0x20c/0x610 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074 __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:581 ================================================================================ ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:1966:23 index 1431655680 is out of range for type '__le32[256]' (aka 'unsigned int[256]') CPU: 0 PID: 20984 Comm: syz-executor.3 Tainted: G B 6.1.36-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 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 dbAllocDmapLev+0x38c/0x3b8 fs/jfs/jfs_dmap.c:1966 dbAllocCtl+0x104/0x840 fs/jfs/jfs_dmap.c:1809 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1350 dbAlloc+0x520/0xb68 fs/jfs/jfs_dmap.c:874 dtSplitUp fs/jfs/jfs_dtree.c:974 [inline] dtInsert+0xab0/0x54f4 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x6bc/0xa0c fs/jfs/namei.c:270 vfs_mkdir+0x334/0x4e4 fs/namei.c:4036 do_mkdirat+0x20c/0x610 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074 __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:581 ================================================================================ Unable to handle kernel paging request at virtual address ffff600043f66f80 KASAN: maybe wild-memory-access in range [0xffff00021fb37c00-0xffff00021fb37c07] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005 CM = 0, WnR = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001b1f53000 [ffff600043f66f80] pgd=000000023c8e3003, p4d=000000023c8e3003, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 20984 Comm: syz-executor.3 Tainted: G B 6.1.36-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dbAllocDmapLev+0x194/0x3b8 fs/jfs/jfs_dmap.c:1966 lr : dbAllocDmapLev+0x38c/0x3b8 fs/jfs/jfs_dmap.c:1966 sp : ffff800023637060 x29: ffff8000236370f0 x28: 1ffff000046c6e10 x27: dfff800000000000 x26: 0000000000000001 x25: ffff00021fb37c00 x24: ffffffffaaaaa000 x23: 0000000000000000 x22: ffff0000db220000 x21: ffff0000ca5e2000 x20: 0000000000000000 x19: 0000000000000001 x18: 1fffe000368b5f76 x17: ffff8000155bd000 x16: ffff80001210ac24 x15: ffff0001b45afbbc x14: ffff0001b45afbb8 x13: 1fffe000368b5f76 x12: 0000000000040000 x11: 000000000003ffff x10: ffff80002614d000 x9 : ffff8000081adec8 x8 : 1fffe00043f66f80 x7 : 1fffe000368b5f77 x6 : ffff80000827cdcc x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000081ade90 x2 : 0000000000000001 x1 : 0000000000000004 x0 : 00000000ffffffff Call trace: dbAllocDmapLev+0x194/0x3b8 fs/jfs/jfs_dmap.c:1966 dbAllocCtl+0x104/0x840 fs/jfs/jfs_dmap.c:1809 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1350 dbAlloc+0x520/0xb68 fs/jfs/jfs_dmap.c:874 dtSplitUp fs/jfs/jfs_dtree.c:974 [inline] dtInsert+0xab0/0x54f4 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x6bc/0xa0c fs/jfs/namei.c:270 vfs_mkdir+0x334/0x4e4 fs/namei.c:4036 do_mkdirat+0x20c/0x610 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074 __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:581 Code: 8b190aa8 2a1303fa 91200119 d343ff28 (38fb6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 8b190aa8 add x8, x21, x25, lsl #2 4: 2a1303fa mov w26, w19 8: 91200119 add x25, x8, #0x800 c: d343ff28 lsr x8, x25, #3 * 10: 38fb6908 ldrsb w8, [x8, x27] <-- trapping instruction