Hello, syzbot found the following issue on: HEAD commit: 807b8f0e24e6 Merge branch 'libbpf: btf typed data dumping .. git tree: bpf-next console output: https://syzkaller.appspot.com/x/log.txt?x=17ccd0d4300000 kernel config: https://syzkaller.appspot.com/x/.config?x=da140227e4f25b17 dashboard link: https://syzkaller.appspot.com/bug?extid=f5087f6afc6f49d80566 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f5087f6afc6f49d80566@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: sleeping function called from invalid context at mm/page_alloc.c:5167 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 8437, name: syz-fuzzer INFO: lockdep is turned off. irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [<ffffffff8143fb5d>] copy_process+0x1dcd/0x7510 kernel/fork.c:2061 softirqs last enabled at (0): [<ffffffff8143fb9e>] copy_process+0x1e0e/0x7510 kernel/fork.c:2065 softirqs last disabled at (0): [<0000000000000000>] 0x0 CPU: 1 PID: 8437 Comm: syz-fuzzer Tainted: G W 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 ___might_sleep.cold+0x1f1/0x237 kernel/sched/core.c:9154 prepare_alloc_pages+0x3da/0x580 mm/page_alloc.c:5167 __alloc_pages+0x12f/0x500 mm/page_alloc.c:5363 alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2244 stack_depot_save+0x39d/0x4e0 lib/stackdepot.c:303 save_stack+0x15e/0x1e0 mm/page_owner.c:120 __set_page_owner+0x50/0x290 mm/page_owner.c:181 prep_new_page mm/page_alloc.c:2433 [inline] __alloc_pages_bulk+0x8b9/0x1870 mm/page_alloc.c:5301 alloc_pages_bulk_array_node include/linux/gfp.h:557 [inline] vm_area_alloc_pages mm/vmalloc.c:2793 [inline] __vmalloc_area_node mm/vmalloc.c:2863 [inline] __vmalloc_node_range+0x39d/0x960 mm/vmalloc.c:2966 __vmalloc_node mm/vmalloc.c:3015 [inline] vzalloc+0x67/0x80 mm/vmalloc.c:3085 n_tty_open+0x16/0x170 drivers/tty/n_tty.c:1848 tty_ldisc_open+0x9b/0x110 drivers/tty/tty_ldisc.c:449 tty_ldisc_setup+0x90/0x100 drivers/tty/tty_ldisc.c:776 tty_init_dev.part.0+0x1f4/0x610 drivers/tty/tty_io.c:1453 tty_init_dev+0x5b/0x80 drivers/tty/tty_io.c:1419 ptmx_open drivers/tty/pty.c:834 [inline] ptmx_open+0x112/0x360 drivers/tty/pty.c:800 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4c8/0x11d0 fs/open.c:826 do_open fs/namei.c:3374 [inline] path_openat+0x1c23/0x27f0 fs/namei.c:3507 do_filp_open+0x1aa/0x400 fs/namei.c:3534 do_sys_openat2+0x16d/0x420 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_openat fs/open.c:1236 [inline] __se_sys_openat fs/open.c:1231 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1231 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4af20a Code: e8 3b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 4c 8b 54 24 28 4c 8b 44 24 30 4c 8b 4c 24 38 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 40 ff ff ff ff 48 c7 44 24 48 RSP: 002b:000000c0002ff3f8 EFLAGS: 00000216 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af20a RDX: 0000000000000000 RSI: 000000c0001a98d0 RDI: ffffffffffffff9c RBP: 000000c0002ff470 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 000000000000018e R13: 000000000000018d R14: 0000000000000200 R15: 000000c0002aa000 can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
