./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1413278279 <...> Warning: Permanently added '10.128.0.33' (ED25519) to the list of known hosts. execve("./syz-executor1413278279", ["./syz-executor1413278279"], 0x7ffceb5f5ac0 /* 10 vars */) = 0 brk(NULL) = 0x5555821c2000 brk(0x5555821c2d00) = 0x5555821c2d00 arch_prctl(ARCH_SET_FS, 0x5555821c2380) = 0 set_tid_address(0x5555821c2650) = 5839 set_robust_list(0x5555821c2660, 24) = 0 rseq(0x5555821c2ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1413278279", 4096) = 28 getrandom("\x91\xdc\xfe\xb4\x0c\x98\x28\xaf", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555821c2d00 brk(0x5555821e3d00) = 0x5555821e3d00 brk(0x5555821e4000) = 0x5555821e4000 mprotect(0x7f59cdd13000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 executing program write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f59c5800000 write(3, "\x58\x46\x53\x42\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xbf\xdc\x47\xfc\x10\xd8\x4e\xed\xa5\x62\x11\xa8\x31\xb3\xf7\x91\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x24\x40\x00\x00\x00\x00\x00\x00\x24\x41\x00\x00\x00\x00\x00\x00\x24\x42\x00\x00\x00\x02\x00\x00\x20\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x12\x00"..., 16777216) = 16777216 munmap(0x7f59c5800000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file2", 0777) = 0 [ 112.078754][ T5839] loop0: detected capacity change from 0 to 32768 [ 112.147972][ T5839] XFS (loop0): DAX unsupported by block device. Turning off DAX. [ 112.157463][ T5839] XFS (loop0): Mounting V5 Filesystem bfdc47fc-10d8-4eed-a562-11a831b3f791 mount("/dev/loop0", "./file2", "xfs", MS_NODIRATIME|MS_RELATIME, "lazytime,dax=never,filestreams,uqnoenforce,dax=always,,nouuid") = 0 openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 chdir("./file2") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) mount(NULL, "./file0", "afs", 0, "dyn") = 0 chdir("./file0") = 0 [ 112.214488][ T5839] XFS (loop0): Ending clean mount [ 112.224783][ T5839] XFS (loop0): Quotacheck needed: Please wait. [ 112.249556][ T5839] XFS (loop0): Quotacheck: Done. chdir("./cgroup") = -1 EDESTADDRREQ (Destination address required) open(".", O_RDONLY) = 4 [ 112.302379][ T5839] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:321 [ 112.312671][ T5839] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5839, name: syz-executor141 [ 112.322747][ T5839] preempt_count: 0, expected: 0 [ 112.327769][ T5839] RCU nest depth: 1, expected: 0 [ 112.332804][ T5839] 4 locks held by syz-executor141/5839: [ 112.338445][ T5839] #0: ffff88802a22eb78 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x310 [ 112.347692][ T5839] #1: ffff8880223a8148 (&type->i_mutex_dir_key#6){.+.+}-{4:4}, at: iterate_dir+0x4a6/0x760 [ 112.357890][ T5839] #2: ffffffff8ed3dfa0 (rcu_read_lock){....}-{1:3}, at: afs_dynroot_readdir+0x466/0xbe0 [ 112.367847][ T5839] #3: ffff8880259b15e0 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x32/0x2f0 [ 112.377909][ T5839] CPU: 1 UID: 0 PID: 5839 Comm: syz-executor141 Not tainted 6.15.0-rc1-syzkaller-00325-g7cdabafc0012 #0 PREEMPT(full) [ 112.377934][ T5839] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 112.377950][ T5839] Call Trace: [ 112.377957][ T5839] [ 112.377965][ T5839] dump_stack_lvl+0x241/0x360 [ 112.378003][ T5839] ? __pfx_dump_stack_lvl+0x10/0x10 [ 112.378050][ T5839] __might_resched+0x558/0x6c0 [ 112.378079][ T5839] ? down_read_trylock+0xd5/0x3c0 [ 112.378107][ T5839] ? __pfx___might_resched+0x10/0x10 [ 112.378144][ T5839] ? __alloc_frozen_pages_noprof+0x162/0x5b0 [ 112.378178][ T5839] prepare_alloc_pages+0x1eb/0x610 [ 112.378225][ T5839] __alloc_frozen_pages_noprof+0x162/0x5b0 [ 112.378259][ T5839] ? __pfx___alloc_frozen_pages_noprof+0x10/0x10 [ 112.378312][ T5839] alloc_pages_mpol+0x339/0x690 [ 112.378341][ T5839] ? __pfx_alloc_pages_mpol+0x10/0x10 [ 112.378374][ T5839] vma_alloc_folio_noprof+0x12d/0x260 [ 112.378400][ T5839] ? __pfx_vma_alloc_folio_noprof+0x10/0x10 [ 112.378433][ T5839] folio_prealloc+0x2e/0x170 [ 112.378461][ T5839] handle_pte_fault+0x2e45/0x61c0 [ 112.378502][ T5839] ? do_raw_spin_lock+0x151/0x370 [ 112.378539][ T5839] ? __pfx_handle_pte_fault+0x10/0x10 [ 112.378565][ T5839] ? rcu_is_watching+0x15/0xb0 [ 112.378602][ T5839] ? rcu_is_watching+0x15/0xb0 [ 112.378626][ T5839] ? __count_memcg_events+0x1e1/0x3d0 [ 112.378677][ T5839] ? mtree_range_walk+0x700/0x8e0 [ 112.378723][ T5839] handle_mm_fault+0x1030/0x1aa0 [ 112.378774][ T5839] ? __pfx_handle_mm_fault+0x10/0x10 [ 112.378821][ T5839] ? lock_mm_and_find_vma+0x9c/0x2f0 [ 112.378846][ T5839] exc_page_fault+0x2bb/0x920 [ 112.378882][ T5839] asm_exc_page_fault+0x26/0x30 [ 112.378909][ T5839] RIP: 0010:filldir+0x2c4/0x6a0 [ 112.378941][ T5839] Code: 87 55 02 00 00 0f 01 cb 0f ae e8 48 8b 44 24 30 49 89 46 08 48 8b 4c 24 10 48 8b 44 24 60 48 89 01 48 8b 44 24 18 8b 6c 24 3c <66> 89 41 10 48 98 40 88 6c 01 ff 48 89 44 24 30 4d 63 f5 42 c6 44 [ 112.378958][ T5839] RSP: 0018:ffffc9000412fbe0 EFLAGS: 00050283 [ 112.378976][ T5839] RAX: 0000000000000020 RBX: 0000200000002010 RCX: 0000200000001ff0 [ 112.378990][ T5839] RDX: 0000000000000000 RSI: 0000200000001fd8 RDI: 0000200000002010 [ 112.379004][ T5839] RBP: 0000000000000004 R08: ffffffff82429e7d R09: 1ffff1100482e780 [ 112.379018][ T5839] R10: dffffc0000000000 R11: ffffed100482e781 R12: ffff88801e288121 [ 112.379032][ T5839] R13: 0000000000000006 R14: 0000200000001fd8 R15: 00007ffffffff000 [ 112.379055][ T5839] ? filldir+0x28d/0x6a0 [ 112.379113][ T5839] afs_dynroot_readdir+0x814/0xbe0 [ 112.379147][ T5839] ? __pfx___mutex_lock+0x10/0x10 [ 112.379173][ T5839] ? afs_dynroot_readdir+0x466/0xbe0 [ 112.379217][ T5839] ? __pfx_afs_dynroot_readdir+0x10/0x10 [ 112.379263][ T5839] iterate_dir+0x5a9/0x760 [ 112.379302][ T5839] __se_sys_getdents+0x1ff/0x4e0 [ 112.379345][ T5839] ? __pfx___se_sys_getdents+0x10/0x10 [ 112.379375][ T5839] ? __pfx_filldir+0x10/0x10 [ 112.379426][ T5839] do_syscall_64+0xf3/0x230 [ 112.379453][ T5839] ? clear_bhb_loop+0x45/0xa0 [ 112.379479][ T5839] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 112.379499][ T5839] RIP: 0033:0x7f59cdc977b9 [ 112.379524][ T5839] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 getdents(4, 0x200000001fc0 /* 4 entries */, 184) = 112 exit_group(0) = ? +++ exited with 0 +++ [ 112.379540]