------------[ cut here ]------------ kernel BUG at include/linux/scatterlist.h:187! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 10405 Comm: syz-executor.1 Not tainted 6.9.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express PC is at sg_set_buf include/linux/scatterlist.h:187 [inline] PC is at sg_init_one+0x9c/0xa8 lib/scatterlist.c:143 LR is at sg_init_table+0x2c/0x40 lib/scatterlist.c:128 pc : [<807e8518>] lr : [<807e690c>] psr: 80000113 sp : eab49ad0 ip : eab49b08 fp : eab49aec r10: 00000000 r9 : ffedc804 r8 : ff7fbf1c r7 : 00000258 r6 : eab49af0 r5 : 8410ac08 r4 : ffedc804 r3 : df000000 r2 : ffffffd8 r1 : 00000000 r0 : eab49af0 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 8ee10ec0 DAC: 00000000 Register r0 information: 2-page vmalloc region starting at 0xeab48000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r1 information: NULL pointer Register r2 information: non-paged memory Register r3 information: non-paged memory Register r4 information: non-paged memory Register r5 information: slab vmap_area start 8410ac08 pointer offset 0 size 40 Register r6 information: 2-page vmalloc region starting at 0xeab48000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r7 information: non-paged memory Register r8 information: 0-page vmalloc region starting at 0xff7d8000 allocated at pcpu_get_vm_areas+0x0/0x12c8 mm/vmalloc.c:3064 Register r9 information: non-paged memory Register r10 information: NULL pointer Register r11 information: 2-page vmalloc region starting at 0xeab48000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Register r12 information: 2-page vmalloc region starting at 0xeab48000 allocated at kernel_clone+0xac/0x3cc kernel/fork.c:2796 Process syz-executor.1 (pid: 10405, stack limit = 0xeab48000) Stack: (0xeab49ad0 to 0xeab4a000) 9ac0: ff7fbefc 8410ac08 dec34e00 83ebd3c0 9ae0: eab49b4c eab49af0 804c3dd4 807e8488 00000002 00000000 00000000 00000000 9b00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9b20: 0000004e 4461cbf6 8410ac08 0000004e dec34e00 8439a684 8439a680 8439a680 9b40: eab49b74 eab49b50 804c6a18 804c3d24 dec34e00 00000000 eab49be4 00000000 9b60: 83e66c00 84361d00 eab49bc4 eab49b78 804bbbf4 804c68c8 804bd118 802e2798 9b80: 8412bc00 00000000 00100cca 00000000 00000000 4461cbf6 8261c360 0000004e 9ba0: 00100cca 00000000 00000000 eab49be3 0000004f 00000000 eab49c3c eab49bc8 9bc0: 804bd614 804bbb58 eab49be3 00000000 8412bc00 dec34e00 0000004f 0000004f 9be0: 01b49c50 00000000 00000000 00000000 00000000 00000000 00000001 00000000 9c00: eab49c00 eab49c00 81875270 4461cbf6 00000406 00000001 00000000 0000004f 9c20: 846c06c0 00100cca 00000000 eab49d50 eab49cb4 eab49c40 804bd968 804bd45c 9c40: 00000000 4461cbf6 eab49cb8 eab49d50 00000000 00000000 eab49c8c eab49c68 9c60: 8042e9b0 8042e804 eab49d50 8260cac8 846c06c0 76b4b000 84361d00 00000000 9c80: eab49cb4 4461cbf6 804bcde8 eab49d50 00000000 0000004f 846c06c0 84361d00 9ca0: 00000000 00000000 eab49d14 eab49cb8 8047f368 804bd90c 8049445c 80479d1c 9cc0: eab49d84 83e66c00 00000000 00000000 76b4b000 8408a100 eab49d14 eab49ce8 9ce0: 84361d00 804943e4 93ee5003 00000214 83e66c00 76b4b000 846c06c0 76b4b000 9d00: 8408a100 00000000 eab49dc4 eab49d18 80480c4c 8047f174 8408a140 ffffffff 9d20: eab49d88 76b4bae8 81c66394 8423930c 8408a140 76b2c000 76b4bfff 8423930c 9d40: 00000000 ffffffff eab49d50 eab49e48 846c06c0 00000cc0 00076b4b 76b4b000 9d60: 76b4b000 00000a14 8f431da8 8ee10ec8 00004f80 00000000 00000000 00000000 9d80: 00000000 de0c6848 00000000 00000000 eab49dc4 4461cbf6 80480308 eab49e48 9da0: 76b4bae8 00000214 00000207 76b4b000 8408a100 00000007 eab49e0c eab49dc8 9dc0: 80215d94 80480880 8029d41c 8029686c 00000007 83e66c00 00000000 83e66c00 9de0: 062ef2f7 8261d0e0 00000207 76b4bae8 eab49e48 80215c4c 83e66c00 003d0f00 9e00: eab49e44 eab49e10 802161dc 80215c58 81897018 81898398 01fb4dec 01ffffff 9e20: eab49e7c 81848bcc 00000113 ffffffff eab49e7c 00000000 eab49f44 eab49e48 9e40: 80200ae4 802161b0 eab49ed0 76b4bae8 ffffffe8 00000000 83e66c00 eab49ee0 9e60: eab49fb0 76b4bae0 00000000 83e66c00 003d0f00 eab49f44 00000018 eab49e94 9e80: 80426ddc 81848bcc 00000113 ffffffff 8089c028 eab49ee0 eab49fb0 00000000 9ea0: 83e66c00 eab49ed0 00000008 00000000 83e66c00 80426ddc 8189a8e8 8027cb3c 9ec0: 00000000 8408a100 00016910 00000000 00000000 00000000 00000000 dddd0280 9ee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9f00: 8027caf4 83e66c00 eab49fb0 00000000 83e66c00 4461cbf6 83e66c00 83e66c00 9f20: eab49fb0 00000000 83e66c00 00000000 83e66c00 003d0f00 eab49fac eab49f48 9f40: 8020bc18 80426c54 80307668 802fd80c 00000000 81a04f98 eab49fa4 eab49f68 9f60: 803097bc 80307618 00000001 00000000 1dcd6500 00000000 80255e5c 4461cbf6 9f80: 83e66c00 4461cbf6 00016910 20000010 ffffffff 83e66c00 00000000 83e66c00 9fa0: 00000000 eab49fb0 80200088 8020bb2c ffffffff 00000004 000001b0 00000000 9fc0: 00000000 00000000 00000000 00000000 7e86a32e 7e86a32f 003d0f00 76b4b0fc 9fe0: 200009d0 200009d0 00016910 00016910 20000010 ffffffff 00000000 00000000 Call trace: [<807e847c>] (sg_init_one) from [<804c3dd4>] (zswap_decompress+0xbc/0x208 mm/zswap.c:1089) r7:83ebd3c0 r6:dec34e00 r5:8410ac08 r4:ff7fbefc [<804c3d18>] (zswap_decompress) from [<804c6a18>] (zswap_load+0x15c/0x198 mm/zswap.c:1637) r9:8439a680 r8:8439a680 r7:8439a684 r6:dec34e00 r5:0000004e r4:8410ac08 [<804c68bc>] (zswap_load) from [<804bbbf4>] (swap_read_folio+0xa8/0x498 mm/page_io.c:518) r9:84361d00 r8:83e66c00 r7:00000000 r6:eab49be4 r5:00000000 r4:dec34e00 [<804bbb4c>] (swap_read_folio) from [<804bd614>] (swap_cluster_readahead+0x1c4/0x34c mm/swap_state.c:684) r10:00000000 r9:0000004f r8:eab49be3 r7:00000000 r6:00000000 r5:00100cca r4:0000004e [<804bd450>] (swap_cluster_readahead) from [<804bd968>] (swapin_readahead+0x68/0x4a8 mm/swap_state.c:904) r10:eab49d50 r9:00000000 r8:00100cca r7:846c06c0 r6:0000004f r5:00000000 r4:00000001 [<804bd900>] (swapin_readahead) from [<8047f368>] (do_swap_page+0x200/0xcc4 mm/memory.c:4046) r10:00000000 r9:00000000 r8:84361d00 r7:846c06c0 r6:0000004f r5:00000000 r4:eab49d50 [<8047f168>] (do_swap_page) from [<80480c4c>] (handle_pte_fault mm/memory.c:5301 [inline]) [<8047f168>] (do_swap_page) from [<80480c4c>] (__handle_mm_fault mm/memory.c:5439 [inline]) [<8047f168>] (do_swap_page) from [<80480c4c>] (handle_mm_fault+0x3d8/0x12b8 mm/memory.c:5604) r10:00000000 r9:8408a100 r8:76b4b000 r7:846c06c0 r6:76b4b000 r5:83e66c00 r4:00000214 [<80480874>] (handle_mm_fault) from [<80215d94>] (do_page_fault+0x148/0x3a8 arch/arm/mm/fault.c:333) r10:00000007 r9:8408a100 r8:76b4b000 r7:00000207 r6:00000214 r5:76b4bae8 r4:eab49e48 [<80215c4c>] (do_page_fault) from [<802161dc>] (do_DataAbort+0x38/0xa8 arch/arm/mm/fault.c:565) r10:003d0f00 r9:83e66c00 r8:80215c4c r7:eab49e48 r6:76b4bae8 r5:00000207 r4:8261d0e0 [<802161a4>] (do_DataAbort) from [<80200ae4>] (__dabt_svc+0x44/0x60 arch/arm/kernel/entry-armv.S:212) Exception stack(0xeab49e48 to 0xeab49e90) 9e40: eab49ed0 76b4bae8 ffffffe8 00000000 83e66c00 eab49ee0 9e60: eab49fb0 76b4bae0 00000000 83e66c00 003d0f00 eab49f44 00000018 eab49e94 9e80: 80426ddc 81848bcc 00000113 ffffffff r8:00000000 r7:eab49e7c r6:ffffffff r5:00000113 r4:81848bcc [<80426c48>] (__rseq_handle_notify_resume) from [<8020bc18>] (rseq_handle_notify_resume include/linux/rseq.h:38 [inline]) [<80426c48>] (__rseq_handle_notify_resume) from [<8020bc18>] (resume_user_mode_work include/linux/resume_user_mode.h:62 [inline]) [<80426c48>] (__rseq_handle_notify_resume) from [<8020bc18>] (do_work_pending+0xf8/0x4c0 arch/arm/kernel/signal.c:631) r10:003d0f00 r9:83e66c00 r8:00000000 r7:83e66c00 r6:00000000 r5:eab49fb0 r4:83e66c00 [<8020bb20>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x24) Exception stack(0xeab49fb0 to 0xeab49ff8) 9fa0: ffffffff 00000004 000001b0 00000000 9fc0: 00000000 00000000 00000000 00000000 7e86a32e 7e86a32f 003d0f00 76b4b0fc 9fe0: 200009d0 200009d0 00016910 00016910 20000010 ffffffff r9:83e66c00 r8:00000000 r7:83e66c00 r6:ffffffff r5:20000010 r4:00016910 Code: 1a000004 e1822003 e8860094 e89da8f0 (e7f001f2) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 1a000004 bne 0x18 4: e1822003 orr r2, r2, r3 8: e8860094 stm r6, {r2, r4, r7} c: e89da8f0 ldm sp, {r4, r5, r6, r7, fp, sp, pc} * 10: e7f001f2 udf #18 <-- trapping instruction